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Puget Sound Tsunamis - A New Partnership to Model and Map the Hazard Who Would be Impacted? • Shore-side Homes, Schools and Businesses • Port, Harbors, and Marinas • Transportation/Utility Lifelines and Facilities • Coastal Ecosystems • Toxic Waste Sites Puget Sound Tsunami Model Developers: Shun-ichi Koshimura* and Harold Mofjeld Center for Tsunami Inundation Modeling Efforts (Frank González and Vasily Titov, Co-Directors) NOAA/Pacific Marine Environmental Laboratory * also, Japan/JSPS Seattle Fault Source Model Extensions and Refinements Fine-Resolution Sub-Models for Communities Additional Tsunami Sources (Planned) Landslide Sources of Tsunamis Bluff Submarine Other Earthquake Faults Seattle Fault during a reverse thrust earthquake. Uplift occurs south of the fault and subsidence north of the fault Initial pattern of vertical displacement resulting from a Magnitude Mw 7.6 earthquake on the Seattle Fault. The assumed tidal stage is mean sea level. Sea bottom deformation Tsunami Fault Tsunami generation N A T I O N A L O C E A NI C AN D A TM O S P H ER IC A D M IN I S T R A T I O N U . S. D EP A R T M ENT O F C OMM E RC E noaa Wave pattern 2.5 minutes after the earthquake Elevated water levels: Red Lowered water levels: Blue Wave pattern 5 minutes after the earthquake Wave pattern 7.5 minutes after the earthquake Tsunami currents in the Duwamish Waterway (4 m/s = 8 knots) Maximum Wave Levels (meters) relative to mean sea level Maximum Inundation Depths (meters) relative to the local land elevation Organizing Agencies Washington State EMD and DNR NOAA/PMEL USGS FEMA Goals and Approach Identify Vulnerable Areas Using Computer Models Estimate Maximum Credible Event Scenarios Develop GIS, HAZUS and Other Products South North Uplift Subsidence South-dipping reverse fault The Next Step... Puget Sound Tsunami/Landslide Workshop January 23 - 24, 2001 NOAA/Sand Point, Bldg. 9 Seattle, WA Purposes: Create additional partnerships to address tsunami and landslide hazards in the Puget Sound Region Develop an action plan to generate tsunami inundation maps and other mitigation products for Puget Sound communities Water levels at Selected Locations (4 m = 13 ft.) Time (minutes) 4 Water level (m) Seattle Tacoma Bremerton Cultus Bay 2 0 -2 80 60 40 20 0 4 2 0 -2 80 60 40 20 0 4 2 0 -2 80 60 40 20 0 -4 -2 0 2 4 80 60 40 20 0 Time (in.) West Waterway North South -2 0 2 4 80 East Waterway -4 60 40 20 0 North South Velocity (m/s) Organizing Committee: George Crawford (Washington EMD) [email protected] 253 512-7067 Harold Mofjeld (NOAA/PMEL) [email protected] 206 526-6819 Craig Weaver (USGS/Project Impact) [email protected] 206 553-0627 4 2 0 -2 80 60 40 20 0 4 2 0 -2 80 60 40 20 0 Edmonds

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Page 1: Puget Sound Tsunamis - A New Partnership to Model and Map ... · Landslide Sources of Tsunamis Bluff Submarine Other Earthquake Faults Seattle Fault during a reverse thrust earthquake

Puget Sound Tsunamis - A New Partnership to Model and Map the Hazard

Who Would be Impacted?

• Shore-side Homes, Schools and Businesses

• Port, Harbors, and Marinas

• Transportation/Utility Lifelines and Facilities

• Coastal Ecosystems

• Toxic Waste Sites

Puget Sound Tsunami Model

Developers:Shun-ichi Koshimura* and Harold Mofjeld

Center for Tsunami Inundation Modeling Efforts(Frank González and Vasily Titov, Co-Directors)NOAA/Pacific Marine Environmental Laboratory

* also, Japan/JSPS

Seattle Fault Source

Model Extensions and Refinements

Fine-Resolution Sub-Models for Communities

Additional Tsunami Sources (Planned)

Landslide Sources of Tsunamis

Bluff

Submarine

Other Earthquake Faults

Seattle Fault during a reverse thrustearthquake. Uplift occurs south of thefault and subsidence north of the fault

Initial pattern of vertical displacementresulting from a Magnitude Mw 7.6earthquake on the Seattle Fault. Theassumed tidal stage is mean sea level.

Sea bottom deformation

Tsunami

Fault

Tsunami generation

NA

TIO

NA

LO

CE

A

NICAND ATMOSPHERIC

ADM

INIS

TR

AT

ION

U.S

.

DEPARTMENT OF COMMERC

E

noaa

Wave pattern 2.5 minutes after the earthquakeElevated water levels: RedLowered water levels: Blue

Wave pattern 5 minutes after the earthquake Wave pattern 7.5 minutes after the earthquake

Tsunami currents in the Duwamish Waterway(4 m/s = 8 knots)

Maximum Wave Levels (meters)relative to mean sea level

Maximum Inundation Depths (meters)relative to the local land elevation

Organizing AgenciesWashington State EMD and DNRNOAA/PMELUSGSFEMA

Goals and ApproachIdentify Vulnerable Areas Using Computer ModelsEstimate Maximum Credible Event ScenariosDevelop GIS, HAZUS and Other Products

South

North

Uplift

Subsidence

South-dipping reverse fault

The Next Step...

Puget Sound Tsunami/Landslide Workshop

January 23 - 24, 2001NOAA/Sand Point, Bldg. 9

Seattle, WA

Purposes:

Create additional partnerships to addresstsunami and landslide hazards in thePuget Sound Region

Develop an action plan to generate tsunamiinundation maps and other mitigationproducts for Puget Sound communities

Water levels at Selected Locations(4 m = 13 ft.)

T i m e ( m i n u t e s )

4

Wa

te

r

le

ve

l

(m

)

Seattle

Tacoma

Bremerton

Cultus Bay

2

0

-2806040200

4

2

0

-2806040200

4

2

0

-2806040200

-4

-2

0

2

4

806040200

Time (in.)

West WaterwayNorth

South

-2

0

2

4

80

East Waterway

-46040200

North

South

Ve

loc

ity

(m

/s)

Organizing Committee:

George Crawford (Washington EMD)[email protected] 512-7067

Harold Mofjeld (NOAA/PMEL)[email protected] 526-6819

Craig Weaver (USGS/Project Impact)[email protected] 553-0627

4

2

0

-2806040200

4

2

0

-2806040200

Edmonds

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