Earthquake Hazards

Publications

Filter Total Items: 1,606
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Year Published: 2018

Updated California aftershock parameters

Reasenberg and Jones (1989) introduced a statistical model for aftershock rate following a mainshock along with estimates of “generic” California parameter values based on past aftershock sequences. The Reasenberg and Jones (1989) model has been used for decades to issue aftershock forecasts following M≥5">M≥5...

Hardebeck, Jeanne L.; Llenos, Andrea L.; Michael, Andrew J.; Page, Morgan T.; Van Der Elst, Nicholas

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Year Published: 2018

Global Earthquake Model (GEM) Risk Map

The Global Earthquake Risk Map (v2018.1) comprises four global maps. The main map presents the geographic distribution of average annual loss (USD) normalized by the average construction costs of the respective country (USD/m2 due to ground shaking in the residential, commercial and industrial building stock, considering contents, structural...

Silva, V.; Amo-Oduro, D.; Calderon, A.; Dabbeek, J.; Despotaki, V.; Martins, L.; Rao, A.; Simionato, M.; Vigano, D.; Yepes, C.; Acevedo, A.; Crowley, H.; Horspool, Nick; Jaiswal, Kishor; Journeay, M.; Pittore, M.
V. Silva, D. Amo-Oduro, A. Calderon, J. Dabbeek, V. Despotaki,L. Martins, A. Rao, M. Simionato, D. Viganò, C. Yepes-Estrada, A. Acevedo, H. Crowley,N. Horspool, K. Jaiswal, M. Journeay, M. Pittore (2018). Global Earthquake Model (GEM) Seismic Risk Map (version 2018.1), DOI: 10.13117/GEM-GLOBAL-SEISMIC-RISK-MAP-2018.

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Year Published: 2018

Role of fault gouge during Interaction between hydraulic fracture and a preexisting fracture

Enhanced reservoir connectivity generally requires maximizing the intersection between hydraulic fracture (HF) and preexisting underground natural fractures (NF), while having the hydraulic fracture continue to propagate across the natural fractures. Observations of downhole core samples suggest that these natural fractures are in fact veins...

Mighani, S.; Lockner, David A.; Kilgore, Brian D.; Evans, Brian

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Year Published: 2018

Serpentinite‐rich gouge in a creeping segment of the Bartlett Springs Fault, northern California: Comparison with SAFOD and implications for seismic hazard

An exposure of a creeping segment of the Bartlett Springs Fault (BSF), part of the San Andreas Fault system in northern California, is a ~1.5‐m‐wide zone of serpentinite‐bearing fault gouge cutting through Late Pleistocene fluvial deposits. The fault gouge consists of porphyroclasts of antigorite serpentinite, talc, chlorite, and tremolite‐...

Moore, Diane E.; McLaughlin, Robert J.; Lienkaemper, James J.

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Year Published: 2018

Ground motions from the 7 and 19 September, 2017 Tehuantepec and Puebla-Morelos, Mexico, earthquakes

The 2017 M">M 8.2 Tehuantepec and M">M 7.1 Puebla‐Morelos earthquakes were deep inslab normal‐faulting events that caused significant damage to several central‐to‐southern regions of Mexico. Inslab earthquakes are an important component of seismicity and seismic hazard in Mexico. Ground‐motion prediction equations (GMPEs...

Sahakian, Valerie J.; Melgar, Diego; Quintanar, Luis; Ramirez-Guzman, Leonardo; Pérez-Campos, Xyoli; Baltay, Annemarie S.
Sahakian, V., D. Melgar, L. Quíntanar, L. Ramírez-Guzman, X. Pérez-Campos, A. Baltay, in press. Ground Motions from the 7 and 19 September Tehuantepec and Puebla-Morelos, Mexico Earthquakes, Bull. of the Seis. Soc. of Am., https://doi.org/10.1785/0120180108

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Year Published: 2018

Development of a geodetic component for the U.S. West Coast Earthquake Early Warning System

An earthquake early warning (EEW) system, ShakeAlert, is under development for the West Coast of the United States. This system currently uses the first few seconds of waveforms recorded by seismic instrumentation to rapidly characterize earthquake magnitude, location, and origin time; ShakeAlert recently added a seismic line source algorithm. For...

Murray, Jessica R.; Crowell, Brendan W.; Grapenthin, R.; Hodgkinson, Kathleen; Langbein, John O.; Melbourne, Timothy; Melgar, Diego; Minson, Sarah E.; Schmidt, David A.
Murray, J. R., B. W. Crowell, R. Grapenthin, K. Hodgkinson, J. O. Langbein, T. Melbourne, D. Melgar, S. E. Minson, and D. A. Schmidt (2018). Development of a Geodetic Component for the U. S. West Coast Earthquake Early Warning System, Seismol. Res. Lett.

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Year Published: 2018

Reported investments in earthquake mitigation top $73 to $80 billion in the San Francisco Bay Area, California, since the 1989 Loma Prieta earthquake

The purpose of this report is to provide a compilation of structural retrofits and replacements of older buildings and infrastructure in the San Francisco Bay Area that have either been completed since 1989 or that are in progress as of October 2018. For the purposes of this report, all or parts of nine Bay Area counties were included:...

Brocher, Thomas M.; Gefeke, Kerri; Boatwright, John; Knudsen, Keith L.
Brocher, T.M., Gefeke, K., Boatwright, J., and Knudsen, K.L., 2018, Reported investments in earthquake mitigation top \$73 to \$80 billion in the San Francisco Bay Area, California, since the 1989 Loma Prieta earthquake: U.S. Geological Survey Open-File Report 2018–1168, 18 p., https://doi.org/10.3133/ofr20181168.

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Year Published: 2018

Erratum to The 2013–2016 induced earthquakes in Harper and Sumner Counties, southern Kansas

The authors identified two sets of minor errors in the paper by Rubinstein et al. (2018), which are corrected here.

Rubinstein, Justin L.; Ellsworth, William L.; Dougherty, Sara L.

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Year Published: 2018

Interseismic ground deformation and fault slip rates in the greater San Francisco Bay Area from two decades of space geodetic data

The detailed spatial variations of strain accumulation and creep on major faults in the northern San Francisco Bay Area (North Bay), which are important for seismic potential and evaluation of natural hazards, remain poorly understood. Here we combine interferometric synthetic aperture radar data from the ERS‐1/2 and Envisat satellites between...

Wu, Songbo; Nadeau, Robert; Ding, Xiaoling; Xu, Wenbin; Wu, Songbo; Materna, Kathryn; Nadeau, Robert; Floyd, Michael; Funning, Gareth J.; Chaussard, Estelle; Johnson, Christopher W.; Murray, Jessica R.; Ding, Xiaoling; Burgmann, Roland
Xu, W., S. Wu, K. Materna, R. Nadeau, M. Floyd, G. Funning, E. Chaussard, C. Johnson, J. R. Murray, X. Ding, and R. Bürgmann (2018), Interseismic ground deformation and fault slip rates in the greater San Francisco Bay Area from two decades of space geodetic data, J. Geophys. Res.

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Year Published: 2018

Improving earthquake rupture forecasts using California as a guide

This article discusses ways in which earthquake rupture forecast models might be improved. Because changes are most easily described in the context of specific models, the third Uniform California Earthquake Rupture Forecast (UCERF3) and its presumed successor, UCERF4, is used as a basis for discussion. Virtually all of the issues and possible...

Field, Edward H.
Field, E. H. (2018). Improving Earthquake Rupture Forecasts Using California as a Guide, Seismological Research Letters, https://doi.org/10.1785/0220180151.

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Year Published: 2018

VS30 at three strong-motion recording stations in Napa and Solano Counties, California—Lovall Valley Road, Broadway Street and Sereno Drive in Vallejo, and Vallejo Fire Station—Calculations determined from S-wave refraction tomography and multichannel analysis of surface waves (Rayleigh and Love)

The August 24, 2014, moment magnitude (Mw) 6.0 South Napa earthquake caused an estimated $400 million in structural damage to the City of Napa, California. In 2015, we acquired high-resolution P- and S-wave seismic data near three strong-motion recording stations in Napa and Solano Counties where high peak ground accelerations (PGAs) were recorded...

Chan, Joanne H.; Catchings, Rufus D.; Goldman, Mark R.; Criley, Coyn J.
Chan, J.H., Catchings, R.D., Goldman, M.R., and Criley, C.J., 2018, VS30 at three strong-motion recording stations in Napa and Solano Counties, California—Lovall Valley Road, Broadway Street and Sereno Drive in Vallejo, and Vallejo Fire Station—Calculations determined from S-wave refraction tomography and multichannel analysis of surface waves (Rayleigh and Love): U.S. Geological Survey Open-File Report 2018–1162, 62 p., https://doi.org/10.3133/ofr20181162.

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Year Published: 2018

VS30 at three strong-motion recording stations in Napa and Napa County, California—Main Street in downtown Napa, Napa fire station number 3, and Kreuzer Lane—Calculations determined from s-wave refraction tomography and multichannel analysis of surface waves (Rayleigh and Love)

The August 24, 2014, moment magnitude (Mw) 6.0 South Napa earthquake caused an estimated $400 million in structural damage to the City of Napa, California. In 2015, we acquired high-resolution P- and S-wave seismic data near three strong-motion recording stations in Napa County where high peak ground accelerations (PGAs) were recorded during the...

Chan, Joanne H.; Catchings, Rufus D.; Goldman, Mark R.; Criley, Coyn J.
Chan, J.H., Catchings, R.D., Goldman, M.R., and Criley, C.J., 2018, VS30 at three strong-motion recording stations in Napa and Napa County, California—Main Street in downtown Napa, Napa fire station number 3, and Kreuzer Lane—Calculations determined from s-wave refraction tomography and multichannel analysis of surface waves (Rayleigh and Love): U.S. Geological Survey Open-File Report 2018–1161, 47 p., https://doi.org/10.3133/ofr20181161.