UW / Dept of Earth and Space Sciences / PNSN

Ruth Ludwin

Pacific Northwest Seismograph Network

Dept. of Earth and Space Sciences, Box 351310
University of Washington
Seattle, WA 98195-1310

email: rludwin@u.washington.edu

Phone: (206)543-4292 FAX: (206)543-0489

Education:
- B.S. Geology, 1977, Boston College
- M.A. Geophysics, 1980, U.C. Berkeley
Publications:
What I do at work:
- PNW current earthquakes:- I create Reports, Catalogs, and Graphics and manage the PNSN web site.
- Public Information: I answer questions, write information sheets, create posters and presentations, and speak to groups.
- Research: I specialize in historical and especially pre-network PNW Earthquakes:
- Native Stories of Cascadia Subduction Megathrust Earthquakes
  - June 2, 2002 - "We live to tell the Tale" LA Times - by Renee Tawa on earthquake stories (requires registration)
  - April, 2002 "Cascadia Megathrust Earthquakes in Pacific Northwest Indian Myths and Legends"- PDF file from "TsuInfo Alert" - a newsletter from the National Tsunami Hazard Mitigation Program
  - March 4, 2001, "Ancient legend returns to life in Seattle quake" USA Today
  - March 2, 2001, "When Thunderbird battled Whale, the earth shook" Seattle PI - by Tom Paulson
  - January 24, 2000 "Cascadia quakes: Tricentennial exposition" Bremerton Sun - by Chris Dunagan
- PNSN phase data:- I am the shepherdess of our flock of 70,000+ "pickfiles", where we store phase data (arrival times) for PNSN-located earthquakes since 1970.
- PNSN trace data:- I can answer questions about PNSN trace data - and you can retrieve the data yourself from IRIS-DMC.
- PNSN technical information:- Velocity models, station locations, station reversals, station corrections, weighting, earthquake location procedures, location accuracy, magnitude completeness levels - Ask me, I'm the expert!

Images and Links

Earthquake Catfish -Namazu Photo: copyright by Harry T. Halverson, Olympia, WA. According to Japanese folklore, earthquakes are caused by monster catfish (Namazu) that live under the island of Japan. In this scene, the people of Edo (now called Tokyo) are trying to punish two monster Namazu for causing the Ansei earthquake of 2 Oct. 1855.