Nahant to Gloucester, Massachusets Depth to Bedrock (bedrock_depth)

These data are high-resolution seismic reflection profile data of the seafloor offshore of Massachusetts, from Nahant to Gloucester. Approximately 1,175 kms of seismic reflection profile data were collected using a Knudsen 320b chirp system Data were processed using SIOSEIS (Scripps Institute of Oceanography) and Seismic Unix (Colorado School of Mines) to produce segy files and jpg images of the profiles. Data were then imported into Landmark SeisWorks, an interactive computer system where horizons were interpreted and digitized to calculate depth to reflectors below the seafloor. Interpreted depth to reflectors were calculated, exported every 5 shots, and then imported to ArcGIS for interpolation into a 50-m raster grid. These data were used to generate a sediment isopach map, which shows the total thickness of sediment that overlies bedrock

Data e Risorse

Campo Valore
accessLevel public
bureauCode {010:12}
catalog_@context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
catalog_conformsTo https://project-open-data.cio.gov/v1.1/schema
catalog_describedBy https://project-open-data.cio.gov/v1.1/schema/catalog.json
identifier USGS:45223c38-763f-448c-93ba-62c8c791ae9f
metadata_type geospatial
modified 20200908
old-spatial -70.920415, 42.399158, -70.688114, 42.572416
publisher U.S. Geological Survey
publisher_hierarchy Department of the Interior > U.S. Geological Survey
resource-type Dataset
source_datajson_identifier true
source_hash e87c492765dde354f63c36d275ef8e16b6f937f8
source_schema_version 1.1
spatial {"type": "Polygon", "coordinates": [[[-70.920415, 42.399158], [-70.920415, 42.572416], [ -70.688114, 42.572416], [ -70.688114, 42.399158], [-70.920415, 42.399158]]]}
theme {geospatial}
Gruppi
  • AmeriGEOSS
  • National Provider
  • North America
Tag
  • 2003
  • 2004
  • amerigeo
  • amerigeoss
  • arcgis-raster
  • atlantic-ocean
  • bedrock
  • ckan
  • cmgp
  • coastal-and-marine-geology-program
  • depth-to-bedrock
  • elevation
  • field-activity-serial-number-rafa03007
  • field-activity-serial-number-rafa04002
  • geo
  • geologic-structure
  • geospatial-datasets
  • geoss
  • gloucester
  • imagerybasemapsearthcover
  • isopach
  • knudsen
  • marine-geology
  • marine-geophysics
  • massachusetts-bay
  • nahant
  • national
  • north-america
  • oceans
  • salem-sound
  • scientific-interpretation
  • seafloor
  • seismic-reflection-profile
  • south-essex-ocean-sanctuary
  • u-s-geological-survey
  • united-states
  • usgs
  • usgs-45223c38-763f-448c-93ba-62c8c791ae9f
  • whsc
  • woods-hole-science-center
isopen False
license_id notspecified
license_title License not specified
maintainer Brian Andrews
maintainer_email bandrews@usgs.gov
metadata_created 2025-11-21T09:32:33.245759
metadata_modified 2025-11-21T09:32:33.245763
notes These data are high-resolution seismic reflection profile data of the seafloor offshore of Massachusetts, from Nahant to Gloucester. Approximately 1,175 kms of seismic reflection profile data were collected using a Knudsen 320b chirp system Data were processed using SIOSEIS (Scripps Institute of Oceanography) and Seismic Unix (Colorado School of Mines) to produce segy files and jpg images of the profiles. Data were then imported into Landmark SeisWorks, an interactive computer system where horizons were interpreted and digitized to calculate depth to reflectors below the seafloor. Interpreted depth to reflectors were calculated, exported every 5 shots, and then imported to ArcGIS for interpolation into a 50-m raster grid. These data were used to generate a sediment isopach map, which shows the total thickness of sediment that overlies bedrock
num_resources 2
num_tags 40
title Nahant to Gloucester, Massachusets Depth to Bedrock (bedrock_depth)