High-resolution Chirp seismic-reflection data from USGS cruise 2018-641-FA, collected in south-central California in support of the Bureau of Ocean Energy Management (BOEM)-funded California Deepwater Investigations and Groundtruthing (Cal DIG I) offshore alternative energy project from 2018-08-29 to 2018-09-20

High-resolution Chirp seismic-reflection data were collected offshore south-central California as part of a geophysical survey aboard the NOAA Ship Rainier during two legs at sea, the first from 8/28/2018 to 9/7/2018 and the second from 9/10/2018 to 9/21/2018. The data were collected using an Edgetech 512i towfish with a 1-6 kHz sweep. Consistently high winds and rough seas prevented additional Chirp data collection and caused noisy data in some cases, especially during the second leg of the survey, which largely took place in the southern part of the study area. The Chirp data were post-processed to include filtering and other noise removal corrections.

Data and Resources

Field Value
accessLevel public
bureauCode {010:12}
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catalog_describedBy https://project-open-data.cio.gov/v1.1/schema/catalog.json
datagov_dedupe_retained 20220721165636
identifier USGS:1681acb2-b6c4-4426-a157-d254cc4aa481
metadata_type geospatial
modified 20211013
old-spatial {"type": "Polygon", "coordinates": [[[-121.98, 34.53], [-121.98, 35.83], [ -120.94, 35.83], [ -120.94, 34.53], [-121.98, 34.53]]]}
publisher U.S. Geological Survey
publisher_hierarchy Department of the Interior > U.S. Geological Survey
resource-type Dataset
source_datajson_identifier true
source_hash 0b0264c036736211658756eae243d46929f75a07
source_schema_version 1.1
spatial {"type": "Polygon", "coordinates": [[[-121.98, 34.53], [-121.98, 35.83], [ -120.94, 35.83], [ -120.94, 34.53], [-121.98, 34.53]]]}
theme {geospatial}
Groups
  • AmeriGEOSS
  • National Provider
  • North America
Tags
  • amerigeo
  • amerigeoss
  • assessments
  • bathymetry-and-elevation
  • ckan
  • cmhrp
  • coastal-and-marine-hazards-and-resources-program
  • diablo-canyon
  • distributions
  • edgetech-512i-chirp
  • elevation
  • geo
  • geoscientificinformation
  • geoss
  • morro-bay
  • national
  • north-america
  • oceans
  • pacific-coastal-and-marine-science-center
  • pacific-ocean
  • pcmsc
  • santa-barbara-basin
  • santa-lucia-bank
  • seismic-reflection-profiling
  • state-of-california
  • sub-bottom-profiling
  • u-s-geological-survey
  • united-states
  • usgs
  • usgs-1681acb2-b6c4-4426-a157-d254cc4aa481
isopen False
license_id notspecified
license_title License not specified
maintainer PCMSC Science Data Coordinator
maintainer_email pcmsc_data@usgs.gov
metadata_created 2025-11-22T05:31:40.935240
metadata_modified 2025-11-22T05:31:40.935244
notes High-resolution Chirp seismic-reflection data were collected offshore south-central California as part of a geophysical survey aboard the NOAA Ship Rainier during two legs at sea, the first from 8/28/2018 to 9/7/2018 and the second from 9/10/2018 to 9/21/2018. The data were collected using an Edgetech 512i towfish with a 1-6 kHz sweep. Consistently high winds and rough seas prevented additional Chirp data collection and caused noisy data in some cases, especially during the second leg of the survey, which largely took place in the southern part of the study area. The Chirp data were post-processed to include filtering and other noise removal corrections.
num_resources 2
num_tags 30
title High-resolution Chirp seismic-reflection data from USGS cruise 2018-641-FA, collected in south-central California in support of the Bureau of Ocean Energy Management (BOEM)-funded California Deepwater Investigations and Groundtruthing (Cal DIG I) offshore alternative energy project from 2018-08-29 to 2018-09-20