Earthquake Shaking Scenario: Mount Diablo Thrust Fault
2012-10-10
vector digital data
<div style='text-align:Left;'><div><div><p><span>This earthquake shaking scenario is part of the updated United States Geological Survey (USGS) scenarios released in 2012. In general the public does not have easy access to these scenarios through the CISN website and they are not accompanied by information for the lay user about hazard or appropriate actions. In general, shaking maps are developed by assuming a fault segment and a rupture length and using ground motion attenuation relationships to estimate ground motion at locations away from the fault. </span></p><p><span></span></p><p><span>USGS, through the California Integrated Seismic Network (CISN) updated their ShakeMap scenarios with updated GMPEs. The scenarios chosen were based on the Working Group on California Earthquake Probabilities’ (Working Group) Uniform California Earthquake Rupture Forecast (UCERF3). Ground motions were estimated using an attenuation relationship using Boore et al (1997) for peak and spectral acceleration and Joyner and Boore (1988) relationship for peak velocity. Site conditions are taken from Wills et al (2000) , and site correction amplification comes from amplitude and frequency-dependent factors from Borcherdt (1994). </span><span style='font-weight:bold;'>This method does not consider rupture direction or directivity. The approach only gives average peak ground motions, so actual ground motions may vary significantly. </span></p><div style='text-align:center;'>-----------------------------------------<br /></div><div><br /></div><div><span>The Association of Bay Area Governments' Resilience Program makes
this data available, along with other hazard data, in an effort to
provide a one-stop-shop for local governments to access data for
hazard/resilience planning. More information on the program and its work
can be accessed from the <a href='https://abag.ca.gov/our-work/resilience' rel='nofollow ugc' target='_blank'>Resilience Program information page</a>.</span></div><p><span></span></p></div></div></div>
This dataset represents projected ground shaking for a M6.7 earthquake on the Mount Diablo Thrust Fault. The scenario was created in 2012 using mapping data from the California Integrated Seismic Network (CISN).
California Integrated Seismic Network (CISN) CISN is made up of California Geological Survey (CGS), CalTech Seismological Laboratory, Berkeley Seismological Laboratory, USGS Menlo Park, USGS Pasadena, and the California Governor's Office of Emergency Services.
environmentalhazardresiliencehazardviewerearthquakeshaking scenario
This data is intended for planning purposes only. The Metropolitan Transportation Commission (MTC) provides spatial and attribute data (also referred to as "information") "as-is," and shall incur no responsibility or liability as to the completeness, currentness, or accuracy of this information. The MTC, and other agencies/cities/counties from which the data were sourced, assume no responsibility arising from use of this information by individuals, businesses, or other public entities. The data is provided with no warranty of any kind, expressed or implied, including but not limited to the implied warranties of merchantability and fitness for a particular purpose. Do not make any decisions based on this data before validating your decision with the appropriate city, county, or government entity.
https://services3.arcgis.com/i2dkYWmb4wHvYPda/arcgis/rest/services/eq_mountdiablo/FeatureServer
eq_mountdiablo
gridcode
General Modified Mercalli Intensity (MMI) value estimated by scenario for area.
value
Detailed Modified Mercalli Intensity (MMI) value estimated by scenario for area. The MMI estimates the intensity of shaking from an earthquake at a specific location or over a specific area by considering its effects on people, objects, and buildings.
maplbl
Labels used to classify shaking intensity ranges in mapping and online applications. Intensity ranges are estimated Modified Mercalli Intensity (MMI) values produced by each scenario model.
Light Shaking
Area expected to experience 3.5 to 4.5 MMI for scenario
Moderate Shaking
Area expected to experience 4.5 to 5.5 MMI for scenario
Strong Shaking
Area expected to experience 5.5 to 6.5 MMI for scenario
Very Strong Shaking
Area expected to experience 6.5 to 7.5 MMI for scenario
Severe Shaking
Area expected to experience 7.5 to 8.5 MMI for scenario
Violent Shaking
Area expected to experience 8.5 to 9.5 MMI for scenario
FGDC CSDGM Metadata
2018-08-22
14252600
2020-08-27
11:50:00.63
TRUE
1.0
FGDC
editor:esri.dijit.metadata.editor
2020-03-27
f16b9d823ebf414092052b0c1969c5bd