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Researchers are 'seising' up the seafloor

Posted: Wednesday, Nov 9th, 2011


Expedition team members work to deploy an “abalone” seismometer from the deck of the R/V Wecoma during a voyage that took place Oct. 15-21. The crew dropped 25 seismometers - 15 of the abalones built at Scripps Institute of Oceanography in San Diego - as part of the Cascadia Initiative, a combined offshore/onshore system to monitor seafloor seismic (earthquake) activity off the coast of Oregon and Washington. (Courtesy photo by Bill Hanshumaker, OSU/HMSC)


OSU voyage is part of vital overall initiative

In what chief scientist Bob Dziak deemed “an unqualified success,” a research team aboard the R/V Wecoma deployed 25 ocean bottom seismometers during an eight-day mid-October cruise. The voyage was part of an overall effort aimed at gleaning more seafloor seismic data from what’s known as the Cascadia Subduction Zone off the coasts of Oregon, Washington and California.

Dziak, an Oregon State University marine geologist based at Hatfield Marine Science Center (HMSC), said this is the second leg of deployment under the Cascadia Initiative, a $10-million project funded under the American Recovery and Reinvestment Act of 2009 to build an offshore/onshore network of seismic and geodetic (earth) stations ranging from Cape Mendocino, Calif., to Cape Flattery, Wash. The network, scheduled to operate for several years, aims to learn more about the structure and processes of the subduction zone.

For the complete article see the 11-09-2011 issue.

Click here to purchase an electronic version of the 11-09-2011 paper.


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