Filters: Tags: earthquake hazards (X) > partyWithName: U.S. Geological Survey - ScienceBase (X) > partyWithName: Mark R Goldman (X)

Filters Date Range Past year (1) Past month (1) Past week (0) Past day (0) Custom range... To   Search Types Map Service (5) OGC WFS Layer (5) OGC WMS Layer (5) OGC WMS Service (5) Contacts Joanne H Chan Rufus D Catchings Earthquake Hazards Program U.S. Geological Survey Coyn J Criley More... Categories Data (6) Tag Types Subject (4) USGS Scientific Topic Keyword (6) Theme (2) Place (6) Harvest Set (6) Tag Schemes USGS Thesaurus (2) Geographic Names Information System (1) Common Geographic Areas (1) View Results as: JSON ATOM CSV

2015 high resolution seismic acquisition at Dos Palmas Preserve, Mecca, California In March 2015, the U.S. Geological Survey acquired seismic reflection and refraction data along an approximately 2.8-km-long profile across northwest-trending San Andreas Fault splays located at the Dos Palmas Preserve east of Salton Sea. To acquire the reflection and refraction data, we collocated shots and geophones, spaced every 3 m along the profile. We used 933 SercelTM L40A P-wave (40-Hz vertical-component) geophones with a sensitivity of 22.34 volts/meter/second to record 925 P-wave shots. We generated P-wave data using one of two active sources: 400-grain Betsy-SeisgunTM shots at approximately every 90 m and a 3.5-kg sledgehammer and steel plate combination at every 3 m between the seisgun shots. All data... Categories: Data; Tags: Dos Palmas Spring, Geophysics, Mecca, Salton Sea, Seismology, All tags... Structural Geology, USGS Science Data Catalog (SDC), Water Resources, earthquake hazards, faulting (geologic), groundwater, groundwater flow, seismic reflection methods, seismic refraction methods, seismology, Fewer tags High-resolution seismic data acquired at six Southern California Seismic Network (SCSN) recording stations in 2017 In August 2017, the U.S. Geological Survey acquired high-resolution P- and S-wave seismic data near six Southern California Seismic Network (SCSN) recording stations in southern California: CI.OLI Olinda; CI.SRN Serrano; CI.MUR Murrieta; CI.LCG La Cienega; CI.RUS Rush; and CI.STC Santa Clara (Figure 1). These strong-motion recording stations are located inside Southern California Edison electrical substations, critical infrastructures that provide essential services to millions of customers. The primary goals of the seismic survey were to understand the potential for amplified ground shaking and to evaluate lateral variability in shear-wave velocity at these sites. We deployed up to 88 geophones at 2-m or 4-m... Categories: Data; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Geophysics, Seismology, Shear-wave velocity, Southern California, USGS Science Data Catalog (SDC), All tags... earthquake hazards, ground motion, seismic refraction methods, seismology, shaking, site characterization, surface wave method, Fewer tags High-resolution seismic data acquired at six seismic network recording stations in San Bernardino County, California in 2019 In May 2019, the U.S. Geological Survey acquired high resolution P- and S-wave seismic data near six seismic network recording stations in San Bernardino County, California: Southern California Seismic Network CI.CLT Calelectic, CI.MLS Mira Loma, CI.CJM Cajon Mountain and CI.HLN Highland; California Strong Motion Instrumentation Program station CE.23542; and US National Strong-Motion Network station NP.5326 (Figure 1). The primary goals of the seismic survey were to better understand the potential for amplified ground shaking, to evaluate lateral variability in shear-wave velocity, and to calculate Vs30 at these sites. We deployed up to 67 DTCC SmartSolo 3-component seismometer systems ("nodes") at 2-m spacing... Categories: Data; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Geophysics, San Bernardino County, CA, Seismology, Shear-wave velocity, Southern California, All tags... USGS Science Data Catalog (SDC), earthquake hazards, ground motion, seismic refraction methods, seismology, shaking, site characterization, surface wave method, Fewer tags High-resolution seismic imaging of the West Napa Fault Zone at Saintsbury Winery, Napa, California In November 2016, the U.S. Geological Survey acquired high-resolution P- and S-wave seismic data across the surface trace of the West Napa Fault zone at Saintsbury Winery in Napa, California. We acquired seismic reflection, refraction, and guided-wave data along a 115-m-long profile across the known surface rupture zone of the West Napa Fault zone. To acquire the reflection and refraction data, we co-located shots and geophones, spaced every meter along the profile. We used 116 SercelTM L40A P-wave (40-Hz vertical-component) geophones with a sensitivity of 22.34 volts/meter/second to record 116 P-wave shots. We also used 116 SercelTM L28-LBH S-wave (4.5-Hz horizontal-component) geophones with a sensitivity of... Categories: Data; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Earthquake Hazards, Earthquakes, Faulting (geologic), Geophysics, Napa, All tags... Northern California, Seismology, Seismology, USGS Science Data Catalog (SDC), West Napa Fault Zone, seismic reflection and refraction, Fewer tags 2017b high resolution seismic imaging of the West Napa Fault Zone, St. Helena, California In September 2017, the U.S. Geological Survey acquired high resolution P- and S-wave seismic data across the suspected trace of the West Napa Fault zone in St. Helena, California, approximately 70 m north of the previous seismic survey conducted in April 2017 (Chan et al., 2018). We acquired seismic reflection, refraction, and guided-wave data along a 75-m-long profile across the expected trend of the West Napa Fault zone. To acquire the reflection and refraction data, we co-located shots and geophones, spaced every 1 and 2 m along the profile. We used 77 SercelTM L40A P-wave (40-Hz vertical-component) geophones with a sensitivity of 22.34 volts/meter/second to record 60 P-wave shots, and 77 SercelTM L28-LBH S-wave... Categories: Data; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Geophysics, Northern California, Saint Helena, Seismology, USGS Science Data Catalog (SDC), All tags... earthquake hazards, earthquakes, faulting (geologic), seismic reflection methods, seismic refraction methods, seismology, Fewer tags High-resolution seismic imaging of the West Napa Fault Zone at Buhman Avenue, Napa, California In November 2016, the U.S. Geological Survey acquired high-resolution P- and S-wave seismic data across the surface trace of the West Napa Fault zone near Buhman Avenue in Napa, California. We acquired seismic reflection, refraction, and guided-wave data along a 117-m-long profile across the known surface rupture zone of the West Napa Fault zone. To acquire the reflection and refraction data, we co-located shots and geophones, spaced every meter along the profile. We used 118 SercelTM L40A P-wave (40-Hz vertical-component) geophones with a sensitivity of 22.34 volts/meter/second to record 118 P-wave shots. We also used 118 SercelTM L28-LBH S-wave (4.5-Hz horizontal-component) geophones with a sensitivity of 31.3... Categories: Data; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Earthquake Hazards, Earthquakes, Faulting (geologic), Geophysics, Napa, All tags... Northern California, Seismology, Seismology, USGS Science Data Catalog (SDC), West Napa Fault Zone, seismic reflection and refraction, Fewer tags