Passive Seismic Data Collected for the Horizontal-to-Vertical Spectral Ratio (HVSR) Method, Pinnacles National Park, California, 2018-2020
type: Dataset
description: This dataset contains passive seismic data collected using a three-component seismometer during 2018-2020 at Pinnacles National Park, California. The data were acquired for the purpose of estimating depth to the bedrock surface underlying alluvial deposits, using the horizontal-to-vertical spectral ratio (HVSR) technique. Data were collected along ten transects, with 3 to 14 points collected along each transect, and at the locations of 6 existing or abandoned wells. A total of 81 passive seismic measurements were collected and the raw data are included in this dataset. The passive seismic data record ambient seismic noise in the range of approximately 0.1 to 1 Hertz (Hz), which is caused by ocean waves, large regional storms, and tectonic sources. The HVSR method analyzes the spectral ratio of the vertical and horizontal components of the passive seismic data to determine the fundamental seismic resonance frequency (f0), which is induced in unconsolidated sediments when there is a substantial contrast (greater than 2 to 1 ratio) in shear-wave acoustic impedance between these sediments and the bedrock. The thickness of the sediments is a function of f0.
keyword: amerigeo
keyword: amerigeoss
keyword: california
keyword: ckan
keyword: geo
keyword: geophysics
keyword: geoss
keyword: groundwater
keyword: horizontal-to-vertical-spectral-ratio
keyword: national
keyword: north-america
keyword: paicines
keyword: passive-seismic
keyword: pinnacles-national-park
keyword: san-benito
keyword: seismic-methods
keyword: seismology
keyword: united-states
keyword: usgs-60818df2d34e8564d68660e5
issued: 2025-11-19T15:09:27.926425
modified: 20210517
theme: {geospatial}
contact point: Organization
  fn: Claire Tiedeman
spatial: Location

US Migrating
type: Agent

Original Metadata
type: Distribution
description: The metadata original format
media type: text/xml
format: XML
access URL: https://data.usgs.gov/datacatalog/metadata/USGS.60818df2d34e8564d68660e5.xml
issued: 2022-07-07T14:58:13.009185
modified: 2025-11-19T15:09:27.906700

Digital Data
type: Distribution
description: Landing page for access to the data
media type: application/http
format: XML
access URL: https://doi.org/10.5066/P9AMDH71
issued: 2022-07-07T14:58:13.009192
modified: 2025-11-19T15:09:27.907585