Daniel Cox Director, O.H. Hinsdale Wave Research Laboratory.

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Presentation transcript:

Daniel Cox Director, O.H. Hinsdale Wave Research Laboratory

Thanks to: National Science Foundation Network for Earthquake Engineering Simulation Oregon Sea Grant

Generation Propagation Inundation Stages of a Tsunami How are tsunamis created? How do they move through the ocean? What happens when they hit land?

(USGS) Tsunami Generation by Earthquakes Illustration of Tsunami Generation by Subduction Zone

(NOAA) Tsunami Propagation

DART Buoys to detect tsunami (NOAA)

Tsunami Buoys Cascadia Subduction Zone

Tsunami Inundation For the Pacific Northwest, we need to prepare for the nearfield tsunami

Tsunami Buoys Cascadia Subduction Zone 30 min 1 in 7 chance in the next 50 years

20-30 min to evacuate the beach Tsunami Evacuation Area Tsunami Evacuation Area

Patong Beach, Phuket Thailand, 2004 What about VERTICAL EVACUATION?

Tsunami shelter in Japan JapanUSA

Harry Yeh Oregon State University Dynamic Tsunami Hazard Map Katada Gunma Univ. Japan

A Tsunami Inundation Model for Seaside

Idealized Seaside Fixed Bed -- Water moves, buildings don’t

Demonstration of Cascadia subduction zone tsunami

Tsunami inundation calculations with “Macro-roughness” Patrick Lynett Texas A&M University

“Wave Force Potential” Numerical Calculations

J. Van de Lindt, Colorado State Univ. R. Gupta, Oregon State University

J. Van de Lindt, Colorado State Univ. R. Gupta, Oregon State University 1:6 Scale Residential Building

Tsunami Intensity Scale* ( = rho * u^2 * depth) High intensity Medium intensity Low intensity *This can be calculated by TSUNAMOS Proposed Research

We have existing information on what types of buildings are in a community Steel reinforced concrete (modern hotel) Unreinforced CMU (old hotel) Timber Frame (residential) Proposed Research

Use ‘limit states’ to get probabilistic estimate of expected damage Damage depends on both the ‘intensity’ of tsunami and the type of structure Legend Building survives Building damaged Totally destroyed Proposed Research

Outcome: Produce allows Structures to be identified for potential ‘vertical evacuation shelters’ Or … Proposed Research

… Identify places where new shelters will reduce the loss of life Proposed Research

Introduction to Engineering

Proposed Tsunami Discovery Center

Photo: K. Fujima, Japan Thanks to: Chris Goldfinger, Oregon State Univ. Harry Yeh, Oregon State Univ.