Tsunami 101 EarthCache
This cache has been locked, but it is available for viewing.
Please note Use of geocaching.com services is subject to the terms and conditions
in our disclaimer.
Devastating waves called "tsunamis" can strike British Columbia's coast at any time. A tsunami is usually caused by a powerful earthquake under the ocean floor. This earthquake pushes a large volume of water to the surface, creating waves. These waves are the tsunami. In the deep ocean these waves are small. As they approach the coast these waves get bigger and more dangerous. Tsunami waves can cause tremendous damage when they reach land. A tsunami can also be triggered by a volcanic eruption, landslide, or other movements of the Earth’s surface. Living on Vancouver Island, we are quite often at risk of tsunami's. The west side of the island is more at risk. If a large undersea earthquake occurs near the BC coast, a local tsunami may follow. The first waves may reach shore in as little as 15 minutes. This may not be enough time for an official warning to be issued. To log this earthcache please email me the answers:
1A According to the sign at the posted co-ords, What is the name of one of the largest active fault in North America?
1B How far is this fault zone offshore?
(Info found on sign)
2. The Juan De Fuca plate is moving away from the Juan De Fuca ridge and is being forced under the overriding North American Plate.
What is the name of this Geological process called?
3. If a tsunami hit while you where here at this site and you climbed the tree directly behind you on the little island in the parking lot, would you be safe? This info is available at the posted co-ordinates. For the FTF I will mail a brand new unactivated geocoin!!!
Additional Hints
(No hints available.)
Treasures
You'll collect a digital Treasure from one of these collections when you find and log this geocache:
Loading Treasures