Field Activity Details for field activity T298PS

AKA: none

Other ID: T-2-98-PS,T-1-98-PS

Status: Completed

Organization(s): USGS, Pacific Coastal and Marine Science Center

Funding Program(s): Seismic Hazards Investigation in Puget Sound (SHIPS) (MU263)

Principal Investigator(s): Michael Fisher

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Information Specialist(s): Michael Hamer

Data Type(s): Seismics: Multichannel

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Start Date: 1998-03-10

End Date: 1998-03-24

Equipment Used: Multichannel

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Notes: See also T-1-98-PS (Thompson) the external NEHRP, Urban Hazards, and the Coastal and Marine Programs all contributed. Coastal and Marine has the honor of having chipped in the greatest share. Permission to use airguns in Puget Sound and the Straits of Juan de Fuca and Georgia, which are home to many marine mammals, took almost a year to obtain. Part of the stipulations in the permit are that when the airguns are operating, marine mammal biologists must remain vigilant aboard both survey ships and aboard an aircraft. Eleven biologists will work closely with geologists to obtain seismic data while minimizing harm to marine life. These biologists have responsibility for shutting off the array whenever a marine mammal enters a specific zone around the airguns where it might suffer hearing damage. The size of the protective zone varies with mammal species, hence the need for expert assistance. With close cooperation, we will obtain three-dimensional seismic data and information on the behavior of marine mammals in response to airgun signals. The data about mammals will help us and other groups plan the next airgun surveys; the seismic data will help city planners allocate scarce funds for seismic strengthening of important infrastructure. Crew from Marfac CMG and EQ leave early next week. Mike Fisher

Staff information imported from InfoBank
Mike Fisher (USGS Western Region) - Chief Scientist

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Washington

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