Daily Archives: Friday,November 8, 2002

Today was another day of blasting.

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Good Evening
Temperature: Max. 9.1 ºC »» Min. 7.8 ºC »» Reset 8.0 ºC
Rainfall: 3.6mm
Today was another day of blasting. The first blast occurred at around 9.30 am and sent all the animals stampeding off their respective islets. We finished two of our video projects today, which only leaves one to complete. We had a visit from some scientists who were studying the impact of the blasts. We conducted an interview which should hopefully be available with the rest of the footage on this website.http://www.racerocks.com/racerock/archives/vidlionblasts.htm
posted by Race Rocks Relief at 6:13 PM

Good morning

WEATHER: Sky Overcast »» Vis. 5 Miles »» Wind North-East 7 Knots »» Sea Choppy/Rough
The storm has not yet materialised, but the blasting continues. Today the blasting is louder, and the seals and sea lions have already deserted their islet. Today there are some scientists visiting the island to study these effects. ( LGL)  If you want to see the blasting, you can track it on the remote control camera at racerocks.com.
Yesterday’s rainfall was 4mm. We are expecting more today.
TEMPERATURE: Max. 9.1 ºC »» Min. 7.8 ºC »» Reset 8.0 ºC
posted by Race Rocks Relief at 10:38 AM

Tidal Cycle at Race Rocks Video

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 This clip was produced on 8.11.2002. As Race Rocks Marine Protected Area is a place where large (3 meter) tidal range occurs, it is a good location to observe the raising and lowering of the water . A rock in Race Passage near the West shore of Great Race Rock was chosen and a camera was installed in front of the window of the research room in the Marine Science Centre. Video clips were taken for 15 seconds every hour of daylight, high tide occurred during noontime. The second part of the clip shows the tide going in fast motion, a day at the rock passes in 25 seconds.” Jeremias Prassti, ( PC yr 28)

From Victoria Tide tables for this date.. 8.11.2002. :

time… tidal height (ft)………….(meters)
0910 …………………..8.9……………..2.7
1100………………….. 8.5……………..2.6
1445………………….. 9.2……………..2.8
2345………………….. 1.0………………0.3

PROJECT IDEA:
1. On graph paper, using the data above, plot the tidal variation for the day. Then pause the video on each of the levels, measure the height of an exposed piece of the rock and then plot it on the graph. In this way you should be able to determine the elevation of the top of the rock.

2. Link to the physical factor page for Race Rocks – Go to the Tidal calculator links available and compare the shape of the graph for November 8, 2002 with the graph you have made here