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Urban seismic experiments investigate Seattle fault and basin

November 14, 2000

In the past decade, Earth scientists have recognized the seismic hazards that crustal faults and sedimentary basins pose to Seattle, Washington (Figure 1). In 1998, the US. Geological Survey and its collaborators initiated a series of urban seismic studies of the upper crust to better map seismogenic structures and sedimentary basins in the Puget Lowland. These studies are called the Seismic Hazard Investigations of Puget Sound (SHIPS).

In March 1998, we conducted our first SHIPS study, an investigation of the upper crustal structure of the Puget Lowland, using marine airgun sources and land recorders [Fisher et al., 1999].The study was nicknamed Wet SHIPS. In September 1999, we obtained a seismic refraction line to study the upper crustal structure in the Seattle area in a land-based study nicknamed Dry SHIPS [Brocher et al., 2000] (Figure 1). In March 2000, we recorded the demolition of the Seattle Kingdome sports stadium using a dense array of seismic recorders for a detailed site response study; this study was nicknamed Kingdome SHIPS (Figure 1).

Publication Year 2000
Title Urban seismic experiments investigate Seattle fault and basin
DOI 10.1029/EO081i046p00545-01
Authors Thomas M. Brocher, Thomas L. Pratt, Ken C. Creager, Robert S. Crosson, William P. Steele, Craig S. Weaver, Arthur Frankel, Anne Trøhu, Catherine M. Snelson, Kate C. Miller, Steven H. Harder, Uri S. ten Brink
Publication Type Article
Publication Subtype Journal Article
Series Title Eos Science News
Index ID 70243663
Record Source USGS Publications Warehouse
USGS Organization Earthquake Science Center; Woods Hole Coastal and Marine Science Center