| snippet:
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This service was specifically published for the Know Your Hazards Tool created by the County of San Diego Office of Emergency Services. It shows the expected relative intensity of ground shaking in California from anticipated future earthquakes. The shaking potential is calculated as the level of ground motion that has a 2% chance of being exceeded in 50 years, which is the same as the level of ground-shaking with about a 2500-year average repeat time. Original data was downloaded from CGS and simplified slightly by OES to ensure a high quality user experience when loading on the web. Go to the California Geological Survey (CGS) website for authoritative data. Data is derived from CGS Map Sheet 48. https://www.conservation.ca.gov/cgs/maps-data |
| summary:
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This service was specifically published for the Know Your Hazards Tool created by the County of San Diego Office of Emergency Services. It shows the expected relative intensity of ground shaking in California from anticipated future earthquakes. The shaking potential is calculated as the level of ground motion that has a 2% chance of being exceeded in 50 years, which is the same as the level of ground-shaking with about a 2500-year average repeat time. Original data was downloaded from CGS and simplified slightly by OES to ensure a high quality user experience when loading on the web. Go to the California Geological Survey (CGS) website for authoritative data. Data is derived from CGS Map Sheet 48. https://www.conservation.ca.gov/cgs/maps-data |
| extent:
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[[-117.596192486276,32.5342863591331],[-116.080892006567,33.5053567538095]] |
| accessInformation:
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D. Branum, R. Chen, C. Wills (California Geological Survey); M. Petersen (United States Geological Survey). |
| thumbnail:
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thumbnail/thumbnail.png |
| maxScale:
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1.7976931348623157E308 |
| typeKeywords:
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["Data","Service","Feature Service","ArcGIS Server","Feature Access","providerSDS"] |
| description:
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<DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN><SPAN>The California Geological Survey published maps of “Earthquake Shaking Potential for California” in 1999 and has revised the maps following each update of the National Seismic Hazard Maps (NSHM). Similar to the NSHMs, the Earthquake Shaking Potential Maps for California depict expected short period (0.2s or 5hz) and intermediate period (1s or 1hz) ground motions with 2% exceedance probability in 50 years. Unlike the NSHMs, Earthquake Shaking Potential Maps for California incorporate anticipated amplification of ground motions by local soil conditions. The current update of the Earthquake Shaking Potential Maps for California (California Geological Survey Map Sheet 48) is based on the 2014 NSHMs developed by the United States Geological Survey (Petersen et al., 2014), a new map of the average shear wave velocity in the upper 30m of the earth’s surface for California (Wills et al., 2015), and a new semi-empirical nonlinear site amplification model (Seyhan and Stewart, 2014).</SPAN></SPAN></P></DIV></DIV></DIV> |
| licenseInfo:
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<DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>None.</SPAN></P></DIV></DIV></DIV> |
| catalogPath:
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|
| title:
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OES_KnowYourHazards_Earthquake |
| type:
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Feature Service |
| url:
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|
| tags:
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["Know Your Hazards","OES","earthquake"] |
| culture:
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en-US |
| name:
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OES_KnowYourHazards_Earthquake |
| guid:
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278137BC-8D25-496E-9ED9-504AF4301CA7 |
| minScale:
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0 |
| spatialReference:
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WGS_1984_Web_Mercator_Auxiliary_Sphere |