{"accessLevel": "public", "bureauCode": ["010:12"], "contactPoint": {"@type": "vcard:Contact", "fn": "Mark R Goldman", "hasEmail": "mailto:goldman@usgs.gov"}, "description": "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. \nWe deployed up to 67 DTCC SmartSolo 3-component seismometer systems (\"nodes\") at 2-m spacing along six linear arrays and collocated P- and S-wave sources at ~1-m offset from the nodes. We generated active-source P-waves using a 3.5-kg sledgehammer and steel plate combination. Active-source S-waves were generated by horizontally striking an aluminum block with a 3.5-kg sledgehammer. SmartSolo nodes are standalone seismometers with 3-component sensors (5-Hz corner frequency and sensitivity of 76.7 volts/meter/second), battery, and built-in GPS to record location and time. The nodes recorded seismic data continuously at a 0.5-ms sampling rate, and shot timing was recorded by GPS event capture hardware to precisely determine the shot times. For some individual surveys, the nodes were buried a few inches below the ground surface to reduce noise. This report provides the metadata needed to utilize the seismic data.  \nAcknowledgements: We thank Garet Huddleston, Dan Langermann, Carolyn Stieban, Zhenning Ma, Luther Strayer, and Chris Green for assistance in data acquisition.  \nReference: Barry, K.M., Cavers, D.A. and Kneale, C.W., 1975, Recommended standards for digital tape formats: Geophysics, vol. 40, no. 2, p. 344-352.", "distribution": [{"@type": "dcat:Distribution", "accessURL": "https://doi.org/10.5066/P9LWG1EC", "description": "Landing page for access to the data", "format": "XML", "mediaType": "application/http", "title": "Digital Data"}, {"@type": "dcat:Distribution", "description": "The metadata original format", "downloadURL": "https://data.usgs.gov/datacatalog/metadata/USGS.61442251d34e0df5fb951fcf.xml", "format": "XML", "mediaType": "text/xml", "title": "Original Metadata"}], "identifier": "http://datainventory.doi.gov/id/dataset/USGS_61442251d34e0df5fb951fcf", "keyword": ["USGS:61442251d34e0df5fb951fcf", "earthquake hazards", "ground motion", "seismic refraction methods", "seismology"], "modified": "2021-09-29T00:00:00Z", "publisher": {"@type": "org:Organization", "name": "U.S. Geological Survey"}, "spatial": "-117.81463622944, 33.892854193735, -116.9467163076, 34.256854814938", "theme": ["geospatial"], "title": "High-resolution seismic data acquired at six seismic network recording stations in San Bernardino County, California in 2019"}