Seattle’s Complex Sedimentary Basin Complicates Seismic Predictions

Table of Contents

Mars Global Geologic Map 1802ABC, prepared from Viking orbital photographs and Mars Global Surveyor MOLA dataUPI reports that the Seismological Society of America said yesterday that the 2 mile complex sedimentary basin underlying Seattle can amplify earthquake shaking in a way not well modeled. Existing models assume more uniform rock substrates – ours will take more study to properly model.

Recent measurements by UW seismologists have highlighted the complicated structures underground, including a low velocity zone just west and below downtown.

comments powered by Disqus

Related Posts

FEMA Kicks Off National Preparedness Month, Urging Americans to ‘Prepare to Protect’

Each September, FEMA’s Ready Campaign uses this time to encourage people to take steps to prepare for disasters and emergencies that could happen anywhere and at any time. This year’s theme is “Prepare to Protect.”

Preparing for disasters is protecting everyone you love. Act now to prepare yourself and your family before disaster strikes.

Throughout the month, weekly themes will be used to highlight basic preparedness activities that everyone can do, including:

  • · Week 1, Sept. 1-4: Make A Plan
  • · Week 2, Sept. 5-11: Build A Kit
  • · Week 3, Sept. 12-18: Low-Cost, No-Cost Preparedness
  • · Week 4, Sept. 19-25: Teach Children about Preparedness

Follow FEMA on Facebook, Twitter and Instagram, and share posts about preparedness. In addition, the Ready Campaign has developed a toolkit for creating content for social media posts.

Later this month, the Ready Campaign and the Ad Council will launch a series of PSAs aimed at family and personal preparedness efforts. This year, the campaign will specifically feature the Latino/Hispanic demographic to ensure campaign messages are culturally competent and meeting the needs of historically underserved populations.

Remember to use #PreparetoProtect and #BeReady hashtags with a mention to the Ready Campaign. For more information, visit Ready.gov/September.

NPM

Read More

Visual Results of Japanese Tsunami

www.abc.net.au/news/events/japan-quake-2011/beforeafter.htm has incredible photos of the Japanese earthquake’s aftereffects – as contrasted with an initial view of the same scene.

Read More

NW Media Focuses on Earthquakes

Of interest on KCTS-9

Cascadia-TheHiddenFire.png

Cascadia: The Hidden Fire
Tuesday, 6/8/10, at 8:00 p.m.
Seismic events around the globe offer insight into the super-quake-prone areas along the Pacific Rim. Producer Michael Lienau will join us in studio.

Read More