Preliminary Results of the US NRC Collaborative Program to Assess - - PowerPoint PPT Presentation

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Preliminary Results of the US NRC Collaborative Program to Assess - - PowerPoint PPT Presentation

Sep 20, 2022 177 likes •473 views

Preliminary Results of the US NRC Collaborative Program to Assess Tsunami Hazard For Nuclear Plants on the Atlantic and Gulf Coasts A.M. Kammerer, U.S. ten Brink, D.C. Twitchell, E.L. Geist, J. Chaytor, J. Locat, H.J. Lee, B.J. Buczkowski, and

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Preliminary Results of the US NRC Collaborative Program to Assess Tsunami Hazard For Nuclear Plants on the Atlantic and Gulf Coasts

A.M. Kammerer, U.S. ten Brink, D.C. Twitchell, E.L. Geist, J. Chaytor, J. Locat, H.J. Lee, B.J. Buczkowski, and M. Sansoucy

  • Dr. Annie Kammerer, P.E.

14th WCEE Paper 15-009

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NRC Tsunami Research Program

  • NRC

– funding agency – managing coordination with research partners – integrating research into other US efforts

  • USGS

– developing source database and localized modeling for screening – Developing PTHA methodology

  • NOAA

– global modeling

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NRC RESEARCH

Pacific Coast Atlantic Coast Gulf Coast Hawaii

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Research Goals

  • Better understanding for all US coasts
  • Development of a source database
  • Integration of landslide modeling
  • Determination of probable maximum

tsunami (PMT) hazard levels (deterministic)

  • Determination of 10,000 year hazard levels

through PTHA (probabilistic)

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Tsunami Sources

  • Near field landslides

– Atlantic and Gulf continental shelves

  • Far field landslides

– Canary Islands

  • Near field seismic

– Caribbean seismic zone/Puerto Rico trench – Hispaniola-Puerto Rico-Lesser Antilles subduction zone

  • Far field seismic

– West of Gibraltar (Lisbon 1755 source)

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Existing Data

  • Single beam
  • Multibeam
  • Sidescan

Sonar

  • Soil cores
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Existing Data

Single beam Multibeam

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Slide Types

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Types and Ages

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Slide Source Areas

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Types and Ages

  • Glaciation
  • Sea level
  • Depositional rates
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Slide Thickness

  • Thickness is

minimum value

  • Significant

uncertainty

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Existing Data

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Tsunamigenic Landslide Potential

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Future Study Area Thick recent deposits Narrow continental shelf Seismic sources

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Data collection, review of current state of knowledge, interpretation of data, basic modeling

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Additional interpretation of data, basic modeling (also published in Marine Geology special publication)

annie.kammerer@nrc.gov

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Currituck Landslide

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Currituck Landslide

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Currituck Landslide

Multibeam

Two head scarps: but

  • ne event or two?
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Currituck Landslide

Bottom Friction Modeling Details

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Currituck Landslide

0 100 200 300 KM

  • 40 -20 0 20 40

Meters

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1755 Lisbon Quake

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1755 Lisbon Quake

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1755 Lisbon Quake

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1755 Lisbon Quake

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Questions