Measurement Exercise

Today we had a request from Meghan Byrne, a 6th grade science teacher in the San Francisco Unified School District. She was doing a lesson with her students on size and scale and she was interested in using the following picture from this blog of the elephant seal measuring device – and letting students determine its length.

 

 

 

So I thought that would be a good exercise to include here for school students. Ecoguardian Mara has provided the following photos of the boat ramp rail so you can now calculate the length of the small elephant seal. 

Be sure to calculate the length of the Elephant seal in both centimeters and in inches.  Then you can also convert it to Metres and Feet . 

Mara sent another picture of a larger male, the brackets on the rail can just be made out so calculate his size.

 

Pearson College Student Field Trips to Race Rocks

This file is an index to the Student Field trips to Race Rocks after 2010. Most of the Events posted here are in links to the blog created by Laura Verhegge to document some of the field trips taken by her Marine Science classes

For other tagged occurrences of Pearson College students being involved at Race Rocks  documented here  use this link:  


 

 

EVENTS 2018:
Four Trips to Race Rocks in Three Days-Laura Verhegge Oct 2018

 

 

 Northern Elephant Seals at Race Rocks.. The First Year Field Exam, 2017

there were 11 northern elephant seals (Mirounga angustirostris) that provided both entertainment and answers to the students writing the exam.

 

Field exam at Race Rocks 2016

On Monday 9 May, 26 Marine Science students travelled to Race Rocks on Hyaku or the Discovery Shuttle (chartered from Ocean River Sports since ‘Second Nature’ is still in the shop) to write their first year field exam.

 

Sea lions, seals and orcas, oh my!

First year marine scientists had a wonderful experience at Race Rocks on Friday September, 2016
Also: Orcas! The trip that never made it to Race Rocks

 

What a day for mammals!. September 30, 2015– 

Later in the day, a first year class was welcomed ashore at Great Race Island by the usual suspects, California sea lions, Stellar sea lions and a Northern elephant seal

Race Rocks visits with Year 41 students

Three great afternoons at Race Rocks with the three blocks of first year Marine Science students – Tuesday, Wednesday and Friday. We observed and photographed many sea lions, both California (Zalophus californianus) and Stellar or Northern sea lions (Eumetopias jubatus).

 

Field May 19 2014 – A block

Better late than never, right?  On 16 May 2014, the other class of first year marine scientists (A block) wrote their field exam at Race Rocks.  Here are a few photos of their experience.

 

 

Field Exam 2014 – D block

It was a stunningly beautiful Thursday morning when eight D block marine scientists travelled to Race Rocks to complete their field exam.

 

 

Tidal pools and abiotic factors at Race Rocks

 

 

 

Baby is growing up fast.February 2014
One class of Marine Science students had the chance to visit a newborn Northern Elephant Seal pup when it was just a few days old, during our first week back in class, in January.

 

Pearson College Marine Science Blog by Laura Verhegge.  Race Rocks exploration – 11 April 2013

 

 

Field exam May  2012

It was sunny and warm with a just gentle breeze yesterday when first year marine scientists went to Race Rocks to complete their last challenge of the year – the field exam!

CAS week

  • 8 students and Laura, their instructor were here for the week.
  • They carried out several interesting studies, including counting the sea lions 5 times/day, watching animal groupings according to the wind direction and intensity, keeping track of the tagged and branded sea lions to watch their movement.
  • I was grateful for their help when I drove Laas to Pearson College in the whaler. The winch is much easier to use with several hands!

 

I’m Back

I am back on Race Rocks, this is my third year but I’m only staying for 3 months this time. I am very happy to be back and look forward to a beautiful and productive autumn.

Today I plan to take a good look around the island and see if any of the sea lions have any injuries and just do a good once over.

I’ve spent the last 5 months with the whale watching community and here are some things I have learned. The whale watchers care about these animals as much as I do and our goal is education. We enjoy sharing this beautiful ocean and our knowledge of these animals with other people. The observations I’ve made during this summer are that many commercial boats do keep a respectful distance. The whale watching boats actually help me out as an ecoguardian. There are plenty of areas in the reserve that are out of my sight and if they see an injured animal they notify me and tell me where it is so I can monitor it and let marine mammal rescue know. If someone is doing activity within the reserve that shouldn’t be like fishing or snorkeling in a dangerous area they let that boat know that they can’t do that. I have a very difficult time trying to get a hold of pleasure crafts because they are always on different radio channels so this really helps me when others look out for the safety of the reserve and others within the reserve.

This island is a special place for many people and so much goes into protecting this ecological reserve and I just wanted to acknowledge a group of people who have helped in many ways to protect Race Rocks.

 

Decade Comparisons:Sea Surface Temperature at Race Rocks-

Link to Race Rocks Mean Monthly Sea Temperature 1921-present,

Monthly temperature averages in degrees Celsius for Race Rocks
1921 1922 1923 1924 1925 1926 1927 1928 1929 1930 Average Month
Jan 6.4 7.1 7.1 6.6 7.8 7.6 6.9 7.1 6.5 7.0 Jan
Feb 7.1 6.1 6.4 7.3 6.9 8 7.4 7.3 6.3 6.6 6.9 Feb
Mar 7.3 6.6 6.7 7.7 7.3 8.6 7.8 7.8 7.1 7.1 7.4 Mar
Apr 7.7 7.5 7.6 7.9 8 9.2 8 8.6 7.8 8.2 8.1 Apr
May 8.5 8.3 8.6 9 9.2 10.1 8.8 9.7 9 9.3 9.1 May
June 9.5 9.5 9.3 9.8 10.1 10.7 9.8 10.2 9.8 10 9.9 June
Jul 10.3 10.5 10.3 10.5 11.1 11.1 10.5 10.8 10.8 10.6 10.7 Jul
Aug 10.5 10.3 10.5 10.3 10.8 10.9 10.9 10.9 10.8 10.8 10.7 Aug
Sept 10.3 10.2 10.6 10.2 10.2 10.5 10.3 10.3 10.7 10.6 10.4 Sept
Oct 9.8 9.3 9.6 9.2 9.2 9.8 9.7 9.2 9.8 9.4 9.5 Oct
Nov 9.1 8.4 8.7 8.8 8.3 9.1 8.6 8.6 8.8 8.6 8.7 Nov
Dec 8.2 7.1 7.9 7.3 8.2 8.5 7.6 7.9 7.8 8 7.9 Dec
8.8 Decade
average
Average
1995 1996 1997 1998 1999 2000 2001 2002 2003 2004
Jan 8.2 8.2 7.7 8.7 8 7.5 7.9 8.1 8.8 7.8 8.1 Jan
Feb 8.6 7.8 7.9 9.2 7.8 7.7 7.7 7.9 8.5 7.9 8.1 Feb
Mar 8.8 8.4 8.1 9.7 8.1 8.1 8.1 7.7 8.7 8.3 8.4 Feb
Apr 9.2 9.2 9 9.9 8.9 9.1 8.7 8.7 9.2 9.1 9.1 Apr
May 10.2 10 10.3 10.4 9.5 10 9.7 9.4 9.9 10.4 10.0 May
June 11.2 10.4 10.9 11.4 10.4 11.1 10.6 10.5 10.9 11 10.8 June
Jul 11.8 11.5 11.7 11.7 11.1 11.3 11.3 11.2 11.3 11.8 11.5 Jul
Aug 11.5 11.5 12.2 12.3 11.5 11.7 11.4 11.7 11.4 11.9 11.7 Aug
Sept 11.3 10.5 11.6 12.1 11.9 11.4 11.4 11.3 11.4 11.2 11.4 Sept
Oct 10.2 9.9 11.3 10.7 10.1 10.3 10.2 10 10.9 10.6 10.4 Oct
Nov 9.4 8.7 9.9 9.8 9 9 9.2 9 9 9.4 9.2 Nov
Dec 8.9 7.6 9.3 9 8.5 8 8.3 8.8 8.5 8.6 8.6 Dec
9.8 Decade
Average
This analysis has been done by Garry Fletcher using the monthly averages of the daily temperatures.
See this file for the complete set of monthly data1921 to present
The following is a comparison between 1951-1960 and 2001-2010

Jan Feb Mar Apr May Jun Jul Aug Sept Oct Nov Dec
1951 7.5 6.9 6.7 8.1 9.2 10.2 10.4 11.1 10.9 9.5 8.5 7.7
1952 6.9 7.1 7.6 8.2 9 9.6 10.4 10.5 10.2 9.8 8.6 7.9
1953 7.8 7.9 7.6 8.1 9.3 9.8 10.6 11 10.6 9.9 9.3 8.5
1954 7.1 7.3 7.5 7.9 8.7 9.3 9.9 10 10 9.4 9.1 8.4
1955 7.5 7.1 6.7 7.5 8.4 9.3 9.8 10.2 10 8.9 7.5 6.6
1956 6.7 6.4 6.3 7.6 8.7 9.6 10.2 10.4 10.1 9.2 8.1 7.1
1957 6.3 6.2 7.2 8.1 9.3 10 10.3 10.5 10.5 9.8 8.8 8.3
1958 8 8.3 8.6 9.3 10.3 10.7 11.5 11.5 11 9.9 8.7 8.1
1959 7.6 7.4 7.9 9.1 9.7 10.4 11.3 11 10.4 9.7 8.3 7.8
1960 7.1 7.5 7.5 8.6 9.6 10.3 11.4 10.8 10.1 9.5 8.6 7.9
Mean 7.25 7.21 7.36 8.25 9.22 9.92 10.58 10.7 10.38 9.56 8.55 7.83

2001 7.9 7.7 8.1 8.7 9.7 10.6 11.3 11.4 11.4 10.2 9.2 8.3
2002 8.1 7.9 7.7 8.7 9.4 10.5 11.2 11.7 11.3 10 9 8.8
2003 8.8 8.5 8.7 9.2 9.9 10.9 11.3 11.4 11.4 10.9 9 8.5
2004 7.8 7.9 8.3 9.1 10.4 11 11.8 11.9 11.2 10.6 9.4 8.6
2005 7.7 8 8.8 9.4 10.7 11.2 11.6 12.1 11.5 10.4 9.5 8.3
2006 8.61 8.49 8.41 8.75 10.08 10.86 11.66 12.09 11.49 10.55 9.29 8.5
2007 7.8 7.9 7.9 9 10 10.2 11.2 11.6 11 10 9 8
2008 7.46 7.33 7.68 8.06 9.36 9.77 10.84 11.3 11.16 10.14 9.39 7.87
2009 7.29 7.2 7.5 8.4 9.54 10.4 11.4 11.74 11.8 10.5 9 7
2010 8.11 8.68 9.12 8.96 9.54 10.36 11.16 11.93 11.08 10.37 8.98 8.5
Mean 7.95 7.96 8.22 8.82 9.862 10.58 11.34 11.71 11.33 10.36 9.17 8.24

Monthly Means
2001-2010 1951-1960
Jan 7.96 7.25
Feb 7.96 7.21
Mar 8.22 7.36
Apr 8.83 8.25
May 9.86 9.22
June 10.58 9.92
july 11.34 10.58
Aug 11.71 10.7
Sept 11.33 10.38
Oct 10.36 9.56
Nov 9.17 8.55
Dec 8.24 7.83

See also https://www.env.gov.bc.ca/soe/indicators/climate-change/sea-surface-temperature.html

Archive of Seawater Temperature Data 1921 to present

Note, The blanks for the years 1940-41 are due to the Second World War. Apparently during that time, data was not collected by a lightkeeper.Original data was sent by the Lightkeepers and now by the Marine Protected Area Guardian of Race Rocks to the Institute of Ocean Sciences where it is compiled and displayed at
http://www.pac.dfo-mpo.gc.ca/science/oceans/data-donnees/lighthouses-phares/index-eng.htm
Decade analysis by G. Fletcher.. NOTE probable evidence of climate change
Race Rocks Light Station: 48.2996 123.5318

 

Year Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
1921  — 7.13 7.39 7.75 8.53 9.57 10.31 10.53 10.35 9.88 9.21 8.25
1922 6.4 6.1 6.6 7.5 8.3 9.5 10.5 10.3 10.2 9.3 8.4 7.1
1923 7.1 6.4 6.7 7.6 8.6 9.3 10.3 10.5 10.6 9.6 8.7 7.9
1924 7.1 7.3 7.7 7.9 9 9.8 10.5 10.3 10.2 9.2 8.8 7.3
1925 6.6 6.9 7.3 8 9.2 10.1 11.1 10.8 10.2 9.2 8.3 8.2
1926 7.8 8 8.6 9.2 10.1 10.7 11.1 10.9 10.5 9.8 9.1 8.5
1927 7.6 7.4 7.8 8 8.8 9.8 10.5 10.9 10.3 9.7 8.6 7.6
1928 6.9 7.3 7.8 8.6 9.7 10.2 10.8 10.9 10.3 9.2 8.6 7.9
1929 7.1 6.3 7.1 7.8 9 9.8 10.8 10.8 10.7 9.8 8.8 7.8
1930 6.5 6.6 7.1 8.2 9.3 10 10.6 10.8 10.6 9.4 8.6 8
1931 7.8 7.8 8.2 8.8 9.9 10.6 11.5 11.1 10.7 9.6 8.6 7.7
1932 7.1 6.8 7.3 8.2 9.3 10.4 10.8 10.9 10.7 9.6 8.9 7.7
1933 7.1 6.7 7.1 8 9.1 10.2 10.5 11.5 10.1 9.6 8.6 7.7
1934 7.8 7.9 8.3 9.2 10 10.8 10.9 11.6 10.7 9.7 9.2 8.4
1935 7.2 7.2 7.5 7.8 9.2 10.1 10.5 10.5 10.7 9.7 8.2 8.1
1936 7.9 6.7 7 7.8 9.3 10.4 11.3 11.3 10.5 10.1 8.6 7.9
1937 6.6 6.4 7.7 8.7 9.9 10.9 11.7 11.5 10.9 9.9 8.5 8.1
1938 7.4 7.2 8.1 9.4 10.6 12.3 12.7 11.9 11 9.9 8.6 7.5
1939 7.4 6.6 7.1 8.6 10.3 11.4 12.2 11.1 11.4 9.7  –< 8.5
1940 7.98 8.28 9.06 10.09 11.49 11.69
1941 10.87 10.54 11.29 11-05 10.66 9.97 9.07 8.60
1942 7.9 7.9 7.8 8.5 9.6 9.8 10.5 11 10.3 9.5 8.4 7.9
1943 6.8 6.7 7.1 8.2 8.8 10 10.3 10.6 10.3 9.6 9 8.1
1944 7.7 7.5 7.3 8 9.2 10.5 11 10.9 10.5 9.6 9.2 8.1
1945 7.8 7.7 7.6 8 8.8 9.8 10.1 10.5 10 9.5 8.1 8.1
1946 7.7 7.3 7.7 8.1 9.4 10.2 10.7 10.8 10.3 9.4 8.1 7.7
1947 7.1 7 7.7 8.4 9.5 10.4 10.6 10.9 10.5 9.9 9.1 7.9
1948 7.5 6.9 7.2 7.9 9 10.2 10.8 10.7 10.4 9.5 8.2 7
1949 6.1 6.1 6.9 8.3 9.4 10.1 10.3 10.2 10.5 9.5 8.7 7.8
1950 6.2 5.8 6.6 7.7 8.7 9.4 10.1 10.4 10.3 9.3 8.5 8
1951 7.5 6.9 6.7 8.1 9.2 10.2 10.4 11.1 10.9 9.5 8.5 7.7
1952 6.9 7.1 7.6 8.2 9 9.6 10.4 10.5 10.2 9.8 8.6 7.9
1953 7.8 7.9 7.6 8.1 9.3 9.8 10.6 11 10.6 9.9 9.3 8.5
1954 7.1 7.3 7.5 7.9 8.7 9.3 9.9 10 10 9.4 9.1 8.4
1955 7.5 7.1 6.7 7.5 8.4 9.3 9.8 10.2 10 8.9 7.5 6.6
1956 6.7 6.4 6.3 7.6 8.7 9.6 10.2 10.4 10.1 9.2 8.1 7.1
1957 6.3 6.2 7.2 8.1 9.3 10 10.3 10.5 10.5 9.8 8.8 8.3
1958 8 8.3 8.6 9.3 10.3 10.7 11.5 11.5 11 9.9 8.7 8.1
1959 7.6 7.4 7.9 9.1 9.7 10.4 11.3 11 10.4 9.7 8.3 7.8
1960 7.1 7.5 7.5 8.6 9.6 10.3 11.4 10.8 10.1 9.5 8.6 7.9
1961 7.9 8.2 8.4 8.8 9.4 10.3 10.9 11.3 10.6 9.4 8.2 7.5
1962 7.2 7.3 7.3 8.4 9.3 10 10.4 10.5 10.5 10 9.3 8.7
1963 7.5 7.5 7.8 8.5 9.6 10.2 10.5 10.8 10.6 10.3 9.9 8.7
1964 8.2 7.9 7.7 8.2 8.8 9.6 10.3 10.5 10 9.4 8.3 7.4
1965 6.9 7.1 7.2 8 8.8 9.8 10 10.2 10.3 9.7 9.2 8.5
1966 7.7 7.6 7.7 8.5 9 9.1 99.9 10.7 10.1 9.5 8.7 8.6
1967 7.9 7.7 7.6 8.1 8.9 9.6 10.3 10.5 10.5 9.7 9.1 8
1968 7.3 7.3 8 8.3 8.7 9.5 10.2 10.2 10.4 9.3 8.8 7.8
1969 6.5 6.3 7.2 8.1 9.1 10.2 10.4 10.5 9.8 9.2 8.7 8.1
1970 7.5 7.7 7.9 8 8.7 9.6 10.2 10.2 10 9 8.3 7.5
1971 7 6.9 6.7 7.5 8.5 9.1 10 10.6 10.4 9.3 8.3 7.3
1972 6.4 6.2 6.9 7.6 8.8 9.5 10.5 10.6 10.2 9.1 8.4 7.3
1973 7 7.2 7.9 8.4 8.6 9.2 10.1 10.3 10 9.2 8.2 8
1974 7.2 7.2 7.3 8.1 8.5 9.7 10 10.9 10.6 9.7 8.6 8.2
1975 7.3 6.8 7.2 7.7 8.7 9.4 10.2 10.4 10.4 9.6 9.2 7.8
1976 7.2 7 7 7.8 8.7 9.3 10.1 10.1 10 9.4 8.6 8.1
1977 7.6 7.9 8 8.3 8.8 9.7 9.9 10.8 10.3 9.2 8.6 7.9
1978 7.6 7.9 8.3 8.9 9.4 10.3 10.4 10.9 10.5 9.8 8.2 7.3
1979 6.5 6.9 7.5 8.3 9.5 10 10.8 10.7 10.5 9.8 9 8.6
1980 7.7 7.6 7.9 8.6 9.5 9.5 10.6 10.9 10.5 9.9 9.2 8.6
1981 8.3 8.3 8.8 9.2 9.4 9.9 10.3 10.5 10.2 9.7 9.3 8.5
1982 7.2 7.5 8 8.8 9.9 10.7 11.4 11.8 11.4 10.3 8.8 8.3
1983 8.6 8.6 9.3 10 10.6 11.3 11.7 12.4 11.4 10.3 9.5 7.7
1984 7.5 7.8 8.4 9 9.7 10.3 11.4 11.6 10.6 9.7 8.5 6.9
1985 6.8 6.8 7.2 8.2 9.6 10.6 11.5 11.6 10.8 9.6 6.8 6.4
1986 7 6.6 8 8.4 9.4 11 10.9 11.8 10.8 9.8 8.4 7.8
1987 7.6 7.9 8.3 8.9 9.8 10.6 11.1 11.5 11.1 10 9 8.2
1988 7.4 7.5 7.5 8.6 9.6 10.4 11 11.4 10.6 9.6 8.7 7.9
1989 7 5.8 6.8 8.2 9.5 10.7 11.3 11.2 11 9.9 8.9 8.2
1990 8.1 7.7 8.2 9 9.9 10.8 11.8 12.1 12.1 10.7 9.9 8.2
1991 7.1 7.7 7.9 8.4 9.7 9.7 10.8 11 11.2 10.1 8.9 8.3
1992 7.9 8.1 9.5 9.5 10.2 10.7 11.1 11.4 11 10 9.1 7.8
1993 6.7 6.7 7.6 8.6 9.7 10.8 11 11.2 11 10.1 8.5 7.9
1994 8 7.4 8.6 9.3 10.1 10.6 11.6 11.5 11.3 10.7 9.3 8.4
1995 8.2 8.6 8.8 9.2 10.2 11.2 11.8 11.5 11.3 10.2 9.4 8.9
1996 8.2 7.8 8.4 9.2 10 10.4 11.5 11.5 10.5 9.9 8.7 7.6
1997 7.7 7.9 8.1 9 10.3 10.9 11.7 12.2 11.6 11.3 9.9 9.3
1998 8.7 9.2 9.7 9.9 10.4 11.4 11.7 12.3 12.1 10.7 9.8 9
1999 8 7.8 8.1 8.9 9.5 10.4 11.1 11.5 11.9 10.1 9 8.5
2000 7.5 7.7 8.1 9.1 10 11.1 11.3 11.7 11.4 10.3 9 8
2001 7.9 7.7 8.1 8.7 9.7 10.6 11.3 11.4 11.4 10.2 9.2 8.3
2002 8.1 7.9 7.7 8.7 9.4 10.5 11,2 11.7 11.3 10.0 9.0 8.8
2003 8.8 8.5 8.7 9.2 9.9 10.9 11.3 11.4 11.4 10.9 9.0 8.5
2004 7.8 7.9 8.3 9.1 10.4 11.0 11.8 11.9 11.2 10.6 9.4 8.6
2005 7.7 8.0 8.8 9.4 10.7 11.2 11.6 12.1 11.5 10.4 9.5 8.3
2006 8.61 8.49 8.41 8.75 10.08 10.86 11.66 12.09 11.49 10.55 9.29 8.5
2007 7.8 7.9 7.9 9.0 10.0 10.2 11.2 11.6 11.0 10.0 9.0 8.0
2008 7.46 7.33 7.68 8.06 9.36 9.77 10.84 11.30 11.16 10.14 9.39 7.87
2009 7.29 7.20 7.5 8.4 9.54 10.4 11.4 11.74 11.8 10.5 9.0 7.0
2010 8.11 8.68 9.12 8.96 9.54 10.36 11.16 11.93 11.08 10.37 8.98 8.5
2011 7.77 7.49 7.77 8.53 9.32 10.35 10.76 11.38 11.17 10.14< 8.66< 8.01
2012 7.29 7.35 7.63 8.73 9.82 9.76 10.37 10.98 10.92 9.66< 8.85 8.32
2013 7.64 7.44 7.48 8.27 9.05 9.72 10.96 10.76 10.65 10,10 8.69 7.68
2014 7.63 7.25 7.90 8.80 9.72 10.30 10.79 11.36 11.20 10.72 10.14 9.03
2015 8.75 9.00 8.96 9.40 9.88 11.17 11.97 12.23 11.30 10.55 9.61 9.01
2016 8.45 8.77 9.05 9.71 10.21 11.16 11.90 12.52 11.27 10.40 10.42 8.63
2018 8.06 7.71 8.00 8.81 10.31 10.63 11.40 11.50 11.11 `0.27 9,54 8.72
2019 8.45 8.96 10.05 10.87 10.98 11.26 10.85
2020
2021
2022
Year/span> Jan Feb Mar Apr/span> May Jun/span> Jul/span> Aug/span> Sep Oct Nov Dec

The 13 Moons of the Wsanec

THE 13 MOONS of the WSANEC (Saanich people)- Now a JASON PROJECT Curriculum Lesson:Teacher Instructions
To order books contact :
Saanich Indian School Board,
7449 W.Saanich Road,
P.O. Box 368, Brentwood Bay, B.C.
V0S 1A0
Telephone 250-652-2313

Note – accurate spelling of the names is available in the calendar,(top left below) These images have been scanned with permission from the booklet ” The Saanich Year” Author Earle Claxton, Author/Illustrator: John Elliott. Published by the Saanich School Board #63 1993 ISBN 1-55036-366-2

NINENE-Moon of the Child (Jan.)

NINENE – MOON OF THE CHILD (Mid December to Mid January)

The face of the young man represents youth, a new beginning, the rebirth of the animal world, and the new edible shoots. This is the Saanich New Year. The moon’s yellow hair is the returning light to the world.

CONNECTIONS AND BACKGROUND INFORMATION

The Winter Solstice (December 20/21) is the point at which the sun is farthest from the Equator, thus it is the darkest day of the year, and at this “turning point” the days will become longer. As with the Summer Solstice, the shortest day of the year holds great importance in many cultures.

WEATHER

This is the time that the Northern Hemisphere starts to move closer to the Sun once again. All things begin to warm up; everything in nature is being reborn. Although it is cold and there are Winter rains, there are some good days and this is the first sign that a new year has begun.

ECONOMIC ACTIVITIES

Some of the twine that had been made from nettles was now woven for reef net fishing. Each family group had a responsibility to produce a certain amount of net or the fishery and these parts would later be assembled. Because there was no hunting or fishing going on, people relied mainly on the fish and game that had been stored for the Winter. For those who would risk the rough seas, there was halibut fishing as the fish returned to their spawning grounds. This was also the season when fawns were born, so the new moon signaled the time to stop deer hunting.

CULTURAL ACTIVITIES

The instruction of the children through telling of tales helped to pass the long Winter nights. The longhouse ceremonial dances continued.

THINGS TO THINK ABOUT

Why do so many cultures celebrate New Year’s at this time of year?
What are New Year’s celebrations like in other cultures?
Are other culture’s New Year’s celebrations in and around the winter solstice?
If you were to develop your own New Year’s celebration, how would you organize it?

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WEXWS-Moon of the Frog (Mid Feb. to Mid March)

WEXES – MOON OF THE FROG (Mid February to Mid March)

The frog on the face of the moon represents DOLUANW – the Keeper of the Sacred Season. It is time to gather foods and medicine. The Saanich People place cedar boughs in the water close to the shore, so that the herring will lay roe on them.

CONNECTIONS AND BACKGROUND INFORMATION

February derives its name from the Latin word ‘februarius’ which means to purify. The Saanich People, like the Romans, designated this month to sacredness and purification.  March derives its name from Mars, the Roman god of War. The Anglo Saxons called it the ‘Hlyd Monath – the loud and stormy month’.

For the Saanich Peoples, this moon in particular was significant because the frog acts as a witness and a messenger to them. The frog announced the Sacred Season of Plenty. Because the frog was honoured as the Keeper of the Sacred Season, it was often presented on totem poles and in artwork to show that an important event had occurred.

During this moon, the wonder of nature repeats an amazing process: Mother Earth warms up and the hibernating frog wakes from its winter sleep, announcing the coming of spring.

WEATHER

As the Northern Hemisphere moves closer to the Sun, the more the Earth warms. Rains diminish and more sunshine is evident.

ECONOMIC ACTIVITIES

This moon was especially welcomed because it signalled that the ocean had become safer to travel on and it was time to put the canoes back into the water. Herring and herring roe, a source of food, were collected by placing cedar branches along the shore for the herring to lay their eggs upon. Herring was also dried into a delicacy called QELEJ and stored for future use. The earliest runs of herring were into Fulford Harbour on Saltspring Island.

CULTURAL ACTIVITIES

The appearance of the frog was a sign to end the activities of Winter ceremonial dances and move outdoors to prepare for the season when the Salmon people would return.

THINGS TO THINK ABOUT

  • Who or what do you honour in your life?
  • What signals does nature give us to start or end things?
  • In what ways do you and your family prepare for spring?

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PEKSISEN-The Moon of the Opening hands the blossoming out Moon (Mid-March to Mid April)

PEXSISEN – THE MOON OF OPENING HANDS THE BLOSSOMING OUT MOON (Mid March to Mid April)

All the plants and trees are opening up their hands again and the moon meets their welcome. All of nature is blooming. At this time the Brant Geese are dried. The Earth renews its strength.

CONNECTIONS AND BACKGROUND INFORMATION

April derives it name from the Latin word “Aprilis”, the Roman goddess Aphrodite and the Greek word “to open”. It should be noted that most countries in the Northern Hemisphere celebrate the arrival of Spring. At this time of year, the trees open their leaves in welcome, just as the Saanich People open their hands to show thanks.

WEATHER

There is less rain than previous months and it is warmer. This helps dry out the land and enables the drying and preservation of food.

ECONOMIC ACTIVITIES

During this time, the Saanich Peoples hunted and dried XELXELJ (Brant Geese) for future use. Float nets were placed where the XELXELJ would feed along the tide line to capture the geese. Clams, Oysters and mussels were at their best that this time of year, too.

Cedar trees were fallen at this time of year to make boats, among other things. The warmer weather also caused the tree sap to run up the trees, making it easier to strip the bark. The fallen trees were then left to cure and the bark was saved for weaving into mats and clothing.

Before the Saanich People started to raise sheep, they would use goat and dog hair for spinning yarn and knitting. Their primary wool source was a breed of dog that was small, white and woolly. The warmer weather caused the dogs to shed and their hair would be gathered for carding and later, knitting.

THINGS TO THINK ABOUT

  • What animal hair or wool is used in other countries? (e.g. Llamas)
  • What activities happen in Western culture’s Gregorian calendar that are similar to those in the First Nations?

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SXANEL- The Bullhead Moon (April-May)

SXÁNEL – BULLHEAD MOON (April – May)

This moon represents the visibility of SXÁNEL or what westerners call Orion’s Belt. The moon’s hair represents a strong wind that comes at this time and the swallows that arrive with the wind.

CONNECTIONS AND BACKGROUND INFORMATION

In this moon, the PIOTEL (a group of three starts in Orion’s belt called the Duck Hunters) appears on the horizon. During the SXÁNEL there are strong winds, the bullhead (a type of sculpin) appear on the shore and the swallows arrive.

WEATHER

This is the season where good weather is the norm. However, these days can bring sudden thunder and lightning storms.

ECONOMIC ACTIVITIES

People spent more time on and around the water. During the moon the Elder women knew how to take their baskets to the beach and gather bullheads from under the rocks. The women would pole sticks under the rocks and big bullheads would say “SKA”, which is their name. The bullhead was deemed a great delicacy.

This was also a great time for harvesting seaweed LEKES).

The halibut fishery ended because the halibut spawned during this moon. The grouse hatched and the larger/older grouse could easily be snared in the woods.

THINGS TO THINK ABOUT

  • What are activities that you start participating in now that spring has arrived? Compare these to First Nations’ activities.
  • What do you look forward to during this season?
  • What is a delicacy or a delectable? What foods do you consider to be delicacies or delectable?
  • What do you eat that comes from the sea?

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PENAWEN-Moon of the Camas Harvest (May)

PENAWEN – MOON OF THE CAMAS HARVEST (May)

This moon is the moon of the camas harvest. It is time to dig KLO,EL (camas). The earth is warming. The camas bulb illustration is shown on the cheek of the moon and in the palm of his hand. The blue plant with the bulb underneath the ground is the whole camas plant.

CONNECTIONS AND BACKGROUND INFORMATION

May derives its name from Majores, the Roman goddess of Spring. This is also the ‘month of Mary’ for those of the Roman Catholic Faith. During the PEN’AWEN moon the Saanich Peoples travelled to family locations to harvest camas bulbs (KLO,EL), which were the source of starch in their diet. This was a cherished time for the people of Saanich – it marked the time when they could begin travelling through their territory again.

WEATHER

Days are evenings are warm and rain is less frequent.

ECONOMIC ACTIVITIES

Saanich families had traditional territorial grounds (land and water), which were used at various times of the year. Most families left their Winter villages for Spring camps. Visits to the camas plots served two purposes: (1) to harvest the blue camas bulb; and (2) to gather the fresh gull eggs found in the camas fields. White camas is poisonous and was not harvested.

In this season both XIWE (purple sea urchins) and SQITI (green sea urchins) were collected and eaten as well.

THINGS TO THINK ABOUT

  • Since this is a time of travel, what would you take with you on a camping trip?
  • What cultures and animals still migrate seasonally? Compare and contrast modern migration due to job loss, over-crowded population centres and health problems.
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CENTEKI- The Sockeye moon (May-June)

CENTEKI – THE SOCKEYE MOON (June)

This moon is the same colour as the pale grey sockeye salmon. The sockeye returns during this moon. The Salish art design represents the tide running swiftly through the reef net which is tied to the two canoes (SXELSCET).

CONNECTIONS AND BACKGROUND INFORMATION

There are two western legends to how this moon was named. First, is that it derives its name from the Roman goddess of woman and marriage (Juno) and second, that the name is derived from Juniores, the name for the lower branch of the Roman senate and/or connected with the Roman consulate, Junius Brutus. It is interesting to note that June is in mnay cultures, the wedding month, and there are festivals of flowers around the world.

The Saanich Peoples history says that the people were once very poor. However, the Salmon people took pity on them and saved them by showing them how to fish and honour the salmon. At the beginning of the CENTEKI moon, a special salmon ceremony was performed before the net anchors were dropped at the ancestors hereditary family locations. The special ceremony started when the medicine man (SNAEM) paddled to the furthest point east and called on ancient relatives (the salmon) to let themselves be caught to feed the WSANEC people. His songs and prayers mentioned all of the family reef net locations that the salmon would pass through. Fishing continued throughout the four salmon months.

WEATHER

Warm summer breezes and dry weather were most evident during the CENTEKI season. The WEWELES (Swansen’s Thrush) – the ripener of the summer berries, arrived. His song put colour into the berries. The DILEK (wild strawberries) and ELI,LE (salmon berries) began to ripen.

ECONOMIC ACTIVITIES

Trading catches from the salmon runs began. As the Saanich Peoples were the first to catch salmon in the Straits because other tribes were waiting for river runs, they were able to catch a higher quality of bright salmon, thus giving them a full month of trading advantage.

CULTURAL ACTIVITIES

The Saanich People paid homage to the salmon with a very special song and ceremony to honour the salmon and show respect to its new generation. After the first sockeye salmon (known as the S,HIWEK leader) was caught, all fishing would cease and the ceremony of prayer and feast would begin. As part of the salmon ceremony, children would walk with a limp to show humbleness and to look pitiful in the eyes of the honoured salmon. They would also carry the hook nose salmon as one would carry a baby. Only the children would eat this salmon. Later, the adults could then feast on the Sockeye.

THINGS TO THINK ABOUT

  • Japan also honours its children with a special day. Why would cultures honour children?
  • What other age group is honoured during the Saanich moons?
  • Can you create your own ceremony to celebrate something in your life?

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CENHENEN-Humpback salmon return to earth (June-July)

CENHENEN – HUMPBACK SALMON RETURN TO EARTH (July)

The Humpback salmon return to the earth during this moon. The illustration is half salmon and half human. The darts show the tidal waters that are used to catch salmon. The child carrying the salmon represents the first salmon ceremony in honour of the salmon. Saanich People humble themselves to the salmon.

CONNECTIONS AND BACKGROUND INFORMATION

July derives its name from Julius Caesar, who was born during this month. This month is important in Spain (bull fights) and Japan (animal festivals). Actual jousting and other medieval-type activities take place for three days during the Japanese Horse festival.

This moon marks the arrival of the Humpback salmon.

WEATHER

This was the dry weather season, drier than the interior of Canada. Although it was a good season for drying Salmon (SDÁL), the grass and forest was parched and everyone guarded against starting grass and bush fires.

ECONOMIC ACTIVITIES

This was the season for Humpback salmon fishing. Fishing caused First Nations peoples to extend catchment areas to areas as far away as Tsawassen and Point Roberts where they maintained shore camps.

CULTURAL ACTIVITIES

The success of the salmon fishery caused those most fortunate to celebrate and share their success with others. This season was especially marked by large family, village and neighbouring village gatherings, including gatherings where traditional sports were held. This was a time to reaffirm family ties and history and hold other gatherings. These included STÁNEK (memorial potlatches), namings (giving of a name ceremonies), weddings and societal ceremonies (e.g. blessings).

Potlaches enabled the more fortunate to share and distribute goods with those less fortunate than themselves. To become wealthy was honourable and to share one’s wealth with one’s neighbours was a traditional expression of Saanich values.

THINGS TO THINK ABOUT

  • What sports events are held by first Nations People are similar or different to those found in other communities and countries?
  • What does being wealthy mean to you?
  • In what ways can an individual, community or country be wealthy?
  • Does wealth always have a connection with careers and money?
  • What is the difference between work and play?
  • Can they be synonomous?
  • What are the values of your family? How are values, beliefs and achievements celebrated?

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CENTAWEN- The Coho Salmon return to earth (August)

CENTÁWEN – THE COHO SALMON RETURN TO EARTH (August)

The Coho Salmon returns to the Earth. The illustration shows the face of the Coho and the human together. The face of the Coho/human is to remind the Saanich Peoples that the salmon were human at one time. The swift running tide picture illustrates where the salmon travel. The camp is the home away from permanent home for the Saanich Peoples.

CONNECTIONS AND BACKGROUND INFORMATION

August derives its name from the Roman Emperor Augustus Caesar. In most northern countries this is the time for summer holidays, fairs, fetes and festivals. The moon marks the arrival of the Coho Salmon.

WEATHER

The first rains begin and break the drought of the summer. Water flow in the streams, rivers and creeks increases. This enables the salmon that have gathered in the inlets, to begin their spawning journey.

ECONOMIC ACTIVITIES

This was a good moon for cod fishing. Traditionally the sea urchins were used as bait for Tommy Cod and the Tommy Cod was used as bait for the larger Ling Cod. Ling Cod could be lured to the surface with bait alone and speared since they were so anxious to protect their nests, that they would take a hook without the bait. As the weather cooled, the rains came and the forest was renewed once again. Deer Hunting began. This was also a good month to harvest the Hog Fennel (KEXMIN) which was used in a variety of First Nations medicines.

THINGS TO THINK ABOUT

  • What are differences between Coho, Sockeye, Humpback and Dog Salmon?
  • How can you tell if a fish is fresh or not?
  • This is a time for harvesting plants for medicines. Can you think of any plants that produce medicines?

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CENQOLEW-The Dog Salmon return to Earth ( Sept)

CENQOLEW – THE DOG SALMON RETURN TO EARTH (September)

The Dog Salmon return to the Earth Moon at this time. The colours are Dog Salmon (ochre red). The men are returning the bones of the salmon to the sea, with thanks, in the belief that the bones will come to life and replenish the salmon stocks. The man raises his oar to show honour and respect to our relative, the salmon, who helps us survive.

CONNECTIONS AND BACKGROUND INFORMATION

September derives its name from the Latin word ‘septem’, meaning seven. This was the seventh month in the Roman calendar when the year began in March. This moon marks the arrival of the Dog Salmon.

WEATHER

The rainy weather continues and the winds have become unpredicatable. The creeks and rivers rise enough for the Dog Salmon to spawn.

ECONOMIC ACTIVITIES

Hunting for deer and groups was still ongoing. This was also the best season and weather conditions for cod fishing. Dog Salmon were the last of the salmon runs to return and the Saanich Peoples carried out this fishery at Goldstream. Dog Salmon was easily dried or smoked and was the last of the preserves to be stored away. The Langford area was excellent for cranberries, blueberries and grouse hunting.

CULTURAL ACTIVITIES

If the salmon run was late, the SNAM (spiritual leader or priest) was brought in to hold a ceremony to call the salmon. The SNAM would also advise the family captains of the correct protocol to adopt so that they would not offend the Salmon Peoples and thus ensure that the salmon returned to the rivers.

THINGS TO THINK ABOUT

  • This is a time for preserving foods. Do you preserve or can any foods in your family?
  • What Fall celebrations do other cultures celebrate?
  • The Saanich People give their salmon bones back to the sea in thanks. How do you give thanks in the fall?
  • With reference to the water cycle and personal observations of rivers and creeks, discuss the effects of rising water levels in creeks and rivers on communities.
  • If possible, go to a local river, like Goldstream Park and see the Salmon spawning.
  • What is the lifecycle of the salmon?

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PEKELANEW-Moon that turns the leaves white(Oct.)

PEKELANEW – The Moon That Turns the Leaves White (October)

This is the moon of the turning white season (frost). This moon brings the first frost. The leaves lose their colours and turn pale. Deer hunting is the activity during this moon. The earth is cooling down and the people turn their efforts to hunting.

CONNECTIONS AND BACKGROUND INFORMATION

October derives its name from the Latin word ‘octo’ meaning eight. It was the eighth month of the Roman year. The moon marks the end of summer (snails) and the beginning of cooler weather.

WEATHER

The longer, cooler nights can lead to frost on the leaves and the ground in higher country.

ECONOMIC ACTIVITIES

The WSANEC people began splitting the cedar logs they had felled in the Spring. The completion of the canoes was Winter work. They would rough out their canoes in the forest making them easier to carry and move them to the villages.

Seals and Sea Lions were hunted in the San Juan Islands. Cod fishing tapered off toward the end of this moon and grouse hunting ceased. Preparations were made for the Fall hunt of the deer and elk. Deer were in their rutting season and easily fooled because they were not as cautious as normal.

THINGS TO THINK ABOUT

  • What does ‘rut’ mean and why would deer be more easily fooled?
  • What are various methods of hunting seals and sea lions?
  • How is or was steam used to make canoes and bent wooden boxes?

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WESELANEW Moon of the shaker leaves -(Oct.-Nov.)

WESELÁNEW – MOON OF THE SHAKER LEAVES (November)

The leaves are ready to fall. The wind comes. Turbulence is felt in the waters and the skies. The earth is cooling down.

CONNECTIONS AND BACKGROUND INFORMATION

November derives its name from the Latin word ‘Novem’ meaning nine, and was the ninth moon in the Roman year. This marked the beginning of Winter. Traditionally, the Anglo Saxons did their slaughtering now (letting blood) because the cold weather was conducive to preserving the meat of the animal/bird. In the WESELÁNEW moon, fishing was undertaken mostly in the safety of local waters. This was the time when big winds come and changed the season to Winter.

WEATHER

The days became cooler and travelling in food gathering territory was limited. The winds that came with this moon were a signal to move to the winter village as the open sea became dangerous for movement in open boats.

ECONOMIC ACTIVITIES

Most foods were now in storage for the Winter and fishing was done only close to the village sites. The Saanich Peoples formed hunting parties and moved West into the mountains to hunt elk. Elk were only hunted after the first snowfall as it was easier to track an elk if it was wounded. This way no meat would be wasted.

CULTURAL ACTIVITIES

Winter fires were lit and this was the beginning of Winter gatherings.

THINGS TO THINK ABOUT

  • What seasonal changes occur where you live?
  • How does the direction of the wind affect climate?
  • What are the effects of pollution and global warming on fish and wildlife?

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SJELCASEN- The Moon of putting your paddle away in the bush (Nov.-Dec.)

SJELCASEN – THE MOON OF PUTTING YOUR PADDLE AWAY IN THE BUSH (November).

This moon is the season of strong winds. The weather is unpredictable, making it unsafe to travel. It is time to put the big sea canoes and paddles away. It is time to honour the paddle for carrying one safely all season long. Snow is possible at this time of year. The long house activities start.

CONNECTIONS AND BACKGROUND INFORMATION

November derives its name from the Latin word ‘novem’ meaning ‘nine’. It was the nineth month of the Roman year. With the coming of this moon, it was time for the people to thank their paddle for taking them to gather foods, see loved ones and guide them to special ceremonies.

WEATHER

Strong and sudden winds are now common on the open sea and it has become unsafe to travel. Squalls and heavy rains can appear suddenly and without warning.  South-easterlies are SKANET and south-westerlies are SCES.

ECONOMIC ACTIVITIES

Food gathering takes less time. The winter night tides were low enough for clam digging. Winter clothing was needed. There was now more time to weave mats and capes and to knit wool into clothing. Some items that were stored for Winter included:

  • Materials for making twine, rope, lines, cables, baskets and storage boxes
  • Cedar inner bark (SLEWI), cooking utensils, and cooking baskets
  • Weaving materials for making baby cradles etc.
  • Tools and fishing gear either made new or repaired.

Red cedar logs felled earlier in the year were now split into planks which were used as portable roofing and building material (S,ILETEW).

Natural splitting of logs was accomplished by inserting round stones as wedges into the cracks of the drying logs. The Winter winds hastened the drying and splitting process.

CULTURAL ACTIVITIES

It was a time for storytelling and Winter ceremonies. People settled down for Winter and enjoyed the food they had gathered and stored earlier.

THINGS TO THINK ABOUT

  • Why do we need to ‘rest’ or putting the paddle away?
  • Nature ‘renews’ itself through hibernation. Trees lower their production of sap in the winter. What are other ways that nature rests?
  • How is the importance of the cedar tree in the Saanich Peoples’ culture similar or difference to the importance of plants in other cultures? (For example, think about corn!).
  • Why is it so important to learn about our roots and heritage? Reflect on your own heritage. What has been passed down to you in terms of language, ideas, wisdom, artefacts etc. what is precious in your family? How does this relate to the stories and traditions of the longhouse?

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SIS,ET- The ELder Moon (Dec)

SIS,ET – THE ELDER MOON (December)

The Elder’s hair holds and shields the elderly people who share the teachings, the beliefs, the history and the culture with the children who are gathered in the warmth of the firelight.

CONNECTIONS AND BACKGROUND INFORMATION

This is the oldest of the moon family and means the elder. It is also the time when teaching occurs. In reality this is not the first month but the last in the yearly cycle of the moons. It is at this time of year when the earth is at its farthest point from the sun and the Winter Solstice occurs (December 20/21). As with the Summer Solstice, this day holds great importance in many cultures.

WEATHER

Days are short and storms and heavy rainfalls made sea travel unpredictable and unsafe. Therefore much more time was spent indoors. The sloughs in and around Saanich filled with water and provided a wintering place for visiting ducks and geese.

ECONOMIC ACTIVITIES

The Saanich people had abundant stored food and therefore had time to prepare for future harvests. Wood pitch was gathered for torches and fires. Torches were used to collect shellfish during the night tides, which were common at this time of year. Ducks and geese were netted or speared on the sloughs and in protected inlets. People only ventured into the protected inlets for ocean fishing. Nettles, gathered earlier in the year, were stripped and twisted into twine to make nets, ropes and cables. Roughed out canoes were brought into the longhouse to be finished.

CULTURAL ACTIVITIES

This is the most important time of the year for spiritual and cultural activities. The Saanich Peoples were involved in Winter ceremonies and the Elders told legends and stories to educate the children about the right way to live. The Saanich Peoples gathered in the longhouse for Winter ceremonial dances. New dancers were initiated and the dances witnessed.

THINGS TO THINK ABOUT

  • What does the word ‘Elder’ mean to you?
  • How does your society treat its elders?
  • How might we learn from our elders?
  • How does this picture depict teaching to you?
  • What does the ‘right way to live’ mean to you?
  • What celebrations does your culture have during Winter Solstice?
  • How does your life change in the winter when there is less daylight and it is colder and raining or snowing, as compared to summer?

A hub of research activity at Race Rocks today.

A lot of activity was going on today in the reserve.  Guy drove out myself and Laura Verhegge and several others to attend to equipment  at Race Rocks. Already there was a crew with Kevin of Oceans Network Canada who were reinstalling the CODAR sea surface monitor. This was last commented on in a log on  September 28 Also accompanying us was Ed Weibe, of the UVic School of Earth and Ocean Sciences — EOS 110 Labs Vancouver Island School-Based Weather Station Network http://victoriaweather.ca , who monitors the  Davis weather station for our weather page on this site and the UVic Schools  Weather program.  He was there to change the humidity sensor and check on the equipment.  Lucinda Leonard was along to take down the GPS earthquake monitoring equipment after its successful deployment for the past week.  (See the May 10 log)

 

The other activity going on was the installation of a CODAR  monitor by the crew with Kevin from Oceans Network Canada.

GPS Survey for Earthquake Hazard Assessment on Southern Vancouver Island

I accompanied Lucinda Leonard and two students from UVIc  Megan Caston and Yijie Zhu – they are both working towards Masters degrees in Geophysics, working on earthquakes and faults to Race Rocks along with 6 students from Pearson College for the installation of two GPS stations. Many years ago , perhaps as early as 1991, this plug had been installed a meter in front of the Camera 5 location , and it had not been rechecked since.  Laas was able to get this picture of it to verify that it was still there .

gps marker

The following is the research proposal by Lucinda Leonard, Assistant Professor (Geophysics) School of Earth and Ocean Sciences, University of Victoria PO Box 1700 STN CSC, Victoria, British Columbia, Canada V8W 2Y2

GPS Survey for Earthquake Hazard Assessment on Southern Vancouver Island

Participants: Lucinda Leonard, Assistant Professor, School of Earth and Ocean Sciences, University of Victoria
Julie Elliott, Assistant Professor, Purdue University
Yan Jiang, Research Scientist, Natural Resources Canada, and Adjunct Professor, University of Victoria 2-3 students will also take part in the fieldwork.

Objectives:

(1) To quantify seismic hazard of crustal faults on southern Vancouver Island. (2) To improve understanding of crustal deformation in subduction zone forearcs.

Scope of fieldwork:

The research project will establish and survey a relatively dense network of high-precision Global Positioning System (GPS) sites across fault zones on southeastern Vancouver Island that may host significant earthquakes. The 2018 survey will involve temporary instrument deployments at a number of pre-existing survey markers as well as new markers emplaced in bedrock. We anticipate future deployments every 1-2 years over the next 5-10 years.

Rationale:

Southeastern Vancouver Island is a region of high seismic hazard due to its location above the Cascadia subduction zone – the region is susceptible to damage from: earthquakes on the Cascadia megathrust fault offshore (magnitude ~9; similar to the devastating 2011 tsunamigenic Japan earthquake), deep earthquakes beneath the Salish Sea and Puget Sound (up to magnitude ~7; e.g., 2001 earthquake in Nisqually, Washington, that caused minor damage in Victoria), and earthquakes on poorly-understood shallow crustal faults (up to magnitude ~7.5; similar to the 2011 damaging earthquake in Christchurch, New Zealand). Crustal earthquakes, although smaller in magnitude than megathrust events, may produce strong shaking in urban areas due to their shallow source and possible close proximity. Modelling of a scenario crustal earthquake beneath the City of Victoria estimates extensive damage to 64% of building stock, 75% of the water pipeline system, and 90% of the sewer pipeline system in the city (VC Structural Dynamics Ltd., 2016).

Crustal faults remain poorly understood in the region, although recent progress includes the identification of surface-rupturing Holocene earthquakes on the Leech River fault (Morell et al., 2017) and its likely offshore equivalent, the Devil’s Mountain fault (Barrie and Greene, 2018). Fault mapping and trenching are important to determine the maximum magnitude of past and future earthquakes on individual fault strands, but these methods cannot provide accurate estimates of slip rates on fault zones, as required for input into seismic hazard assessments. GPS surveying can be used to track the relative motion of survey markers over time; a sufficiently dense GPS network can be further used to identify the location of active faults and to quantify their slip rates (e.g., Marechal et al., 2015). The existing network of continuous GPS stations on southeastern Vancouver Island is inadequate for this purpose, e.g., there are only three stations within 20 km of the active Leech River fault zone. Campaign-style deployments, repeated every 1-2 years over a time-span of 5-10 years, will provide the greater density of survey locations needed to assess strain build-up on fault zones. Several sites were established in 1991 and re-surveyed in 1996 (Henton, 2000; Mazzotti et al. 2003) – we propose to re-occupy these sites, where possible, and to establish a denser network of campaign GPS sites for temporary deployments (2-4 days at each site).

1

Methodology
Site locations:
Site requirements: accurate GPS positioning (to within 1 mm) requires the GPS antenna to have a good view of the sky in order to maximize the satellite signals received. It also requires a marker to be emplaced in a stable substrate, ideally bedrock. Thus bedrock hilltops provide optimum site locations. In this region, many optimal locations are located within parks.

Proposed deployments include 5 pre-existing sites, in addition to ~16 new sites, at an average of ~3 km spacing perpendicular to the Leech River fault zone and adjacent faults offshore (Figure 1; Table 1). The greater number of sites to the north of the fault zone reflects greater accessibility over a larger land area in this region.

Figure 1. Proposed locations of campaign GPS sites. Also shown are the locations of continuous GPS sites, pre-existing campaign GPS sites, and mapped faults.

Table 1. Locations of existing and proposed GPS campaign sites available by contacting the research proponenet

For a continuous period of 2-4 days at each site (maximum of once per year), a 1.7-m high mast with GPS antenna will be set up over an existing or new marker in the bedrock at each site, attached by cable to a receiver in a locked box on the ground. During deployment, the mast will be secured to the anchors using chains (Fig. 2a). At sites not conducive to the mast set-up, a tripod (Fig. 2b) or spike mount (Fig. 2c) will be used instead. New sites will be established by using epoxy to fix stainless steel marker pins into the bedrock. These will penetrate 6 inches into the rock, with a diameter of 0.5 inches, to lie flush with the ground surface. For mast sites, three stainless steel anchor bolts will also be bolted into the rock to a depth of ~2 inches, each attached to a 2-inch diameter stainless steel ring flush to the ground, at a distance of ~0.5 m from the central marker.

Approximate schedule for 2018 fieldwork:

The fieldwork will be carried out in August 2018, with each site being surveyed for 2-4 days. The proposed schedule is shown in Table 2 below, although actual dates may differ.

Table 2. Approximate schedule for fieldwork in August 2018 Approx. Dates Tasks

Aug 1 Aug 2 Aug 3 Aug 4 Aug 5 Aug 6 Aug 7 Aug 10

Aug 11 Aug 12 Aug 13 Aug 14 Aug 15 Aug 16 Aug 17 Aug 18

Team 1: Deploy PBHY, HIGH, SHER
Team 1: Deploy MLHT, TOLM, check others, babysit TOLM
Team 1: Stay at TOLM, check others
Team 1: Babysit TOLM, Demob PBHY, HIGH, TOLM (after 5 pm) Team 1: Demob MLHT, Deploy HAVN
Team 1: Check HAVN
Team 1: Demob HAVN after 5 pm
Team 1: Paperwork; deploy BEAR, STEW
Team 2: Deploy BBEC, DEVO, MILL
Team 1: Deploy OAKH, DOUG, check BEAR, STEW, babysit DOUG Team 2: Deploy PEDD, check BBEC,DEVO, MILL
Team 1: Babysit DOUG, check STEW, OAKH, BEAR
Team 2: Check DEVO, PEDD, BBEC, MILL
Team 1: Demob STEW, BEAR, Babysit DOUG then demob after 5 pm Team 2: Demob BBEC, DEVO, MILL
Team 1: Demob OAKH, Deploy THET, DISC (by boat)
Team 2: Demob PEDD, deploy LONE, CAMO
Team 1: Deploy WELS, MOSS, SUMM
Team 2: Deploy OBSV, check LONE, CAMO
Team 1: Check WELS, THET, MOSS, SUMM
Team 2: Check LONE, CAMO, OBSV
Team 1: Demob DISC (boat), THET
Team 2: Demob LONE, CAMO
Team 1/2: Demobilize WELS, MOSS, SUMM, OBSV

4

Plans for on-site security, site control and general safety?

The deployment of passive GPS equipment poses little risk to the public. Flagging will be placed on the equipment to mitigate any potential tripping hazards. Signs will be posted at all sites, with the following text (correct dates to be inserted): “Surveying for earthquake hazard study in progress from August 3-6 – please do not disturb. For more information, please contact Lucinda Leonard, School of Earth and Ocean Sciences, University of Victoria: 778-676-9621 or lleonard@uvic.ca”. At locations that are popular with the public, sites will be manned during daylight hours. Sites that see less pedestrian traffic will be visited 1-2 times per day during the deployment.

Data processing and analysis:

Geodetic data will be processed using standard routines to determine precise daily average locations for each site. Positional time series will be analyzed to provide site motions (direction and rate of motion) in a North America reference frame. Analysis of relative motion between sites will enable determination of strain across fault zones and improve seismic hazard assessment for southern Vancouver Island.

References:

Barrie, V., and H. G. Greene (2018), The Devils Mountain Fault zone: an active Cascadia upper plate zone of deformation, Pacific Northwest of North America, Sedimentary Geology, v. 364, p. 228-241, doi: 10.1016/j.sedgeo.2017.12.018.

Henton, J.A. (2000), GPS studies of crustal deformation in the northern Cascadia subduction zone. Ph.D. thesis, Univ. Victoria, Victoria B.C., Canada, 169p.

Marechal, A., S. Mazzotti, J.L. Elliott, J.T. Freymueller, and M. Schmidt (2015), Indentor-corner tectonics in the Yakutat-St. Elias collision constrained by GPS, Journal of Geophysical Research, v. 120, p. 3897-3908, doi: 10.1002/2014JB011842.

Mazzotti, S., H. Dragert, J. Henton, M. Schmidt, R. Hyndman, T. James, Y. Lu, and M. Craymer (2003), Current tectonics of northern Cascadia from a decade of GPS measurements. J. Geophys. Res. 108(B12):2554.

Morell, K. D., C. Regalla, L. J. Leonard, C. Amos, and V. Levson (2017), Quaternary rupture of a crustal fault beneath Victoria, British Columbia, Canada, GSA Today, v. 27, no. 3.

VC Structural Dynamics Ltd. (2016), Citywide seismic vulnerability assessment of the City of Victoria, Report prepared for the corporation of the City of Victoria, Victoria, BC, Canada, 43p, available online at: http://www.victoria.ca/assets/Departments/Emergency~Preparedness/Documents/Citywide- Seismic-Vulnerabilities-Assessment.pdf

See the follow-up  when the instrument was removed on the May 15 log