US Migrating
type: Agent

Shot points at 500 shot intervals for chirp seismic-reflection data collected by the U.S. Geological Survey offshore of the Chandeleur Islands, LA, 2007 (seismic_sht_07007.shp, points)
type: Dataset
contact point: Organization
  fn: David C. Twichell
keyword: curlew-island
keyword: united-states
keyword: gulf-of-mexico
keyword: ckan
keyword: edgetech
keyword: north-central-gulf-coast
keyword: louisiana
keyword: gosier-island
keyword: chirp
keyword: amerigeo
keyword: national
keyword: cmgp
keyword: north-islands
keyword: geoss
keyword: navigation
keyword: esri-point-shapefile
keyword: whsc
keyword: geospatial-datasets
keyword: seismic-reflection
keyword: location
keyword: shots
keyword: whsc-field-activity-serial-number-07007
keyword: shot-points
keyword: chandeleur-islands
keyword: u-s-geological-survey
keyword: woods-hole-science-center
keyword: navigational-data
keyword: usgs
keyword: oceans
keyword: coastal-and-marine-geology-program
keyword: geoscientificinformation
keyword: marine-geology
keyword: seismic-stratigraphy
keyword: breton-island
keyword: amerigeoss
keyword: mississippi-river-gulf-outlet
keyword: north-america
keyword: marine-geophysics
keyword: seismic-profile
keyword: new-harbor-islands
keyword: mrgo
keyword: geo
keyword: 512i
theme: {geospatial}
description: In 2006 and 2007, the U.S. Geological Survey, in partnership with Louisiana Department of Natural Resources and the University of New Orleans, conducted geologic mapping to characterize the sea floor and shallow subsurface stratigraphy offshore of the Chandeleur Islands in Eastern Louisiana. The mapping was carried out during two cruises on the R/V Acadiana. Data were acquired with the following equipment: an SEA Ltd SwathPlus interferometric sonar (234 kHz), Klein 3000 dual frequency sidescan sonar, and an Edgetech 512i chirp subbottom profiling system. The long-term goal of this mapping effort is to produce high-quality geologic maps and geophysical interpretations that can be utilized to investigate the impact of Hurricane Katrina in 2005 and to identify sand resources within the region.
issued: 2025-11-21T07:22:56.060408
modified: 20200908
spatial: Location

Digital Data
type: Distribution
access URL: http://pubs.usgs.gov/of/2008/1195/GIS_catalog/Tracklines/seismic_sht_07007.zip
media type: application/http
description: Landing page for access to the data
format: XML
issued: 2022-08-05T21:00:31.659896
modified: 2025-11-21T07:22:56.039613

Original Metadata
type: Distribution
access URL: https://data.usgs.gov/datacatalog/metadata/USGS.b3dc8018-4c8c-40d4-9bc8-4e79d5e9369d.xml
media type: text/xml
description: The metadata original format
format: XML
issued: 2022-08-05T21:00:31.659885
modified: 2025-11-21T07:22:56.039200