Cascadia Earthquake Hazard Videos

DOGAMI Maps

 

Use this link to check the shoreline inundation along the entire Oregon Coast and encroachment up estuaries. This is a link to the NANOOS website where you can type in any address and determine if it is safe high ground (Green), in the Inundation Zone for a Far Tsunami (Brown) or in the Inundation Zone for our Near Tsunami (Yellow).
http://nvs.nanoos.org/TsunamiEvac (Coastal Interactive)

Use the link below to view/print Tsunami Evacuation Maps for any Oregon Coastal Town and download a free app for smart phone access to the (Coastal Interactive) site.

http://www.oregongeology.org/tsuclearinghouse/pubs-evacbro.htm  (Coastal Evacuation Maps)

TSUNAMI

Visit the first two videos to see what a Far Tsunami really looks like. The third video will show you what the Near Tsunami looked like in Ryoishi Bay, Japan. (The 45’ wave crest occurs near the end of this video)

 
Christchurch Harbor Tsunami – Japan
 

 
Brookings Harbor – Japan
 

Ryoishi Bay, Japan -***
 

Did the wave look like what you expected?

The following video shows the Tsunami in a “River Town” much like Dunes City or Florence. The Siltcoos River, 3 mile marker is mapped due east of the Marina in Westlake. The Siuslaw River, 5 mile marker is mapped at the east end of the “Old Town Docks” in Florence.

DOGAMI’s modeling program shows this “stacking up” of Tsunami waves in bays, and rivers along the Oregon Coast – the high water is not predicted to recede for many hours, similar to what is captured in the following video.

 
Japan tsunami in Sendai
 

LIQUEFACTION

 

 
What Is Liquefaction?
 

 
Christchurch neighborhood – roads
 

 
Christchurch Streets – next day
 

 
Christchurch liquefaction
 

 
Christchurch Home Sunk
 

 
Christchurch BMX Park Liquefaction!!
 

 
Christchurch Aerial
 

The below videos show liquefaction damage 250 miles from the epicenter – i.e. Eugene and the rest of the towns and cities in the valley. Dr Priest advised all of the I-5 Bridges will have to be inspected before any traffic moves across them.

 
See the ground actually open up and move!
 

 
Tokyo Area – Chiba Liquefaction
 

 
UNBELIEVEABLE ground movement Makuhari, Chiba
 

The following three videos show “Lateral Flow” damage which can be expected in flat to moderate slope areas.

 
Japan Road Damage
 

 
Christchurch Road Liquefaction
 

 
Peru 2007 Road
 

NOTE: These videos were chosen to more closely fit the terrain and soil type for the Florence Area.

 

Other Resourses

 

Cascadia Subduction Zone Scenario PDF

Shaky Ground Magazine Oregon PDF

Cascadia Winter 2012 PDF

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