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The purpose of this data layer is to provide relocated earthquake hypocenters for the state of Washington in an effort to identify unmapped active fault planes. |
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The purpose of this data layer is to provide relocated earthquake hypocenters for the state of Washington in an effort to identify unmapped active fault planes. |
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5000 |
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<DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>The Washington Geological Survey relocated earthquake hypocenters for events greater than magnitude 1.0 with depths shallower than 25 km throughout Washington State. Relocating earthquakes gives a better estimation of the three-dimensional position of the earthquake. These improvements are made by careful review of the data by a skilled analyst. The original earthquake data (P and S-wave arrival times) were obtained from the Pacific Northwest Seismic Network (PNSN) catalog and the earthquakes were relocated using the ‘hypoDD’ computer program. The hypoDD program uses a double-difference earthquake relocation algorithm of Waldhauser and Ellsworth (2000) to relocate earthquake clusters relative to one another, in some cases revealing previously unobserved linear trends. Linear trends of earthquake locations within a region can help scientists locate unmapped faults.</SPAN></P></DIV></DIV></DIV> |
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<DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>Disclaimer of Warranties</SPAN></P><P><SPAN>No express or implied warranty of any kind is made regarding the digital information contained herein, including, but not limited to, the warranty of merchantability, warranty of fitness for a particular purpose, or warranties of content, completeness, accuracy, reliability, usefulness, or that use would not infringe on privately-owned rights. Although these digital data and metadata have been processed successfully on computers of WGS, no warranty, expressed or implied, is made by WGS regarding the use of these data on any other system, nor does the fact of distribution constitute or imply any such warranty.</SPAN></P><P><SPAN /></P><P><SPAN>Use at Your Own Risk</SPAN></P><P><SPAN>The information presented here is intended for use as a general screening tool in community planning or for creating awareness and understanding of geologic information and is neither intended to constitute advice nor is it to be used as a substitute for site-specific advice from a licensed professional. You use this information at your own risk and should not act (or refrain from acting) based upon the information without independently verifying the information and, as appropriate, obtaining professional advice regarding your particular facts and circumstances.</SPAN></P><P><SPAN /></P><P><SPAN>Limitation on Liability</SPAN></P><P><SPAN>User agrees there shall not be liability on the State of Washington, Washington Department of Natural Resources, or their officers, agents, representatives, or employees for any damages allegedly resulting from any use of or reliance on this information. Under this limitation, there shall be no liability for any damages whatsoever, including but not limited to any damages in contract or tort for compensatory, consequential, punitive, direct, indirect, or special damages such as personal injuries, property damage, loss of profits, or any other losses or expenses.</SPAN></P><P><SPAN /></P><P><SPAN>No Endorsement</SPAN></P><P><SPAN>Reference herein to any specific commercial product, process, or service by trade name, trademark, manufacturer, or otherwise, does not constitute or imply its endorsement, recommendation, or favoring. Further, the views and opinions of authors expressed herein do not necessarily state or reflect those of the State of Washington or any agency thereof.</SPAN></P></DIV></DIV></DIV> |
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| title:
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Relocated Earthquakes |
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["location","location","location","PNSN","Pacific","Northwest","NW","Seismic","Network","Pacific Northwest Seismic Network","HypoDD","seismogenic","seismology","seismic","geology","geologic","mapping","Washington","Washington State","Double-Difference","Earthquake","Hypocenter","Location","Double-Difference Earthquake Hypocenter Location","travel times","p-wave","phase picking","Waldhauser","seismic stations","seismometers","hazard","geologic hazard","seismogenic features","earthquake data","natural hazards","Relocated Earthquakes >1M","USA","Washington State"] |
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en-US |
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150000000 |
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