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Description: This dataset includes reports of earthquake damage associated with the 1949 (6.7 M), 1965 (6.7 M), and 2001 (6.8 M) Puget Sound earthquakes in Washington State. Each point marks damage by type, site descriptions, the nearest city and county, source citations, and first-hand accounts and comments. Earthquake damage data were obtained from the Pacific Earthquake Engineering Research Center (PEER), United States Geological Survey (USGS), and the Washington Geological Survey (WGS).
Description: This point feature class includes relocated earthquake hypocenters throughout the state of Washington. For each event, there are calculated latitude and longitude coordinates, a calculated depth, an oberved date and time, and a determined magnitude. Earthquake data was obtained from the Pacific Northwest Seismic Network (PNSN) (Steve Malone, 2011, written commun.). The earthquake hypocenter relocation method used in this study uses the double-difference algorithm of Waldhauser and Ellsworth (2000). This algorithm is based on the ray paths from two earthquakes close to a common station being almost identical, and the difference in observed travel time can therefore be attributed with a high accuracy to the spatial offset of the two earthquakes (Waldhauser and Ellsworth, 2000). This study uses a hypocenter relocation computer program developed by Felix Waldhauser of the United States Geological Survey (USGS) called hypoDD,that applies this concept to a cluster of earthquakes and determines the offset between each earthquake relative to one another. Funding for this data compilation was provided through a U.S. Department of Energy geothermal grant.
Description: Earthquakes are sudden releases of crustal stress, generating seismic waves, which are then detected by seismometers located throughout the world. This point feature class includes earthquake hypocenters throughout the state of Washington. For each event, there are latitude and longitude coordinates, earthquake depth, an observed date and time, and an earthquake magnitude. Earthquake data were obtained from the Pacific Northwest Seismic Network (PNSN). Funding for this data compilation was provided through a U.S. Department of Energy geothermal grant.