Tsunamis - Beachside State Park
Posted by: Groundspeak Premium Member Volcanoguy
N 44° 22.977 W 124° 05.343
10T E 413249 N 4914984
This geology sign is located in the Day Use area of Beachside State Park. One of many of these signs along the Oregon coast.
Waymark Code: WMD44B
Location: Oregon, United States
Date Posted: 11/15/2011
Published By:Groundspeak Premium Member TheBeanTeam
Views: 3

Marker Name: Tsunamis
Marker Text: Devastating waves called “tsunamis” can strike Oregon’s coast at any time. These giant waves are caused by great undersea earthquakes. Such earthquakes can occur along the Cascadia Subduction Zone, one of the largest active faults in North America. This fault zone lies 32 to 70 miles offshore and roughly parallels the coast.
Tsunamis are dangerous and destructive. They have struck the Oregon coast repeatedly and will again in the future. Tsunamis can follow within minutes of an earthquake. They move rapidly but quickly run out of water as they sweep inland and uphill. Flooding can occur several miles inland along rivers and streams. Remember, most tsunamis are not solitary giant waves; instead, many large waves may strike the shore over the course of several hours.
Sign also includes information on what to do to escape a tsunamis, a map of the Cascadia Subduction Zone and a cross section of the subduction zone.

Historic Topic: Geological

Group Responsible for placement: State of Oregon

Marker Type: Roadside

Region: Coast

County: Lincoln

Web link to additional information: [Web Link]

State of Oregon Historical Marker "Beaver Board": Not listed

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Recent Visits/Logs:
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Volcanoguy visited Tsunamis - Beachside State Park 10/19/2011 Volcanoguy visited it