Locations of All Shotpoints, USGS Cruise M1-98-GM (GOM98SHTALLG.SHP)

Metadata Updated: December 12, 2017

All shotpoint locations from multichannel seismics survey, USGS cruise M1-98-GM. During June 1998 and April 1999, the U.S. Geological Survey (USGS) conducted two research cruises in the northern Gulf of Mexico to acquire high-resolution seismic reflection data across the upper and middle continental slope as part of an investigation of the seismic character, distribution, and potential effects of naturally-occurring marine gas hydrates and related free gas within the gas hydrate stability zone. Over 1600 km of two-dimensional multichannel seismic reflection profiles were acquired during these two cruises. The specific objectives of this investigation are (a) to produce high-resolution images of the gas hydrate stability zone; (b) to study the distribution and character of potential seafloor failures and their relationship to known and inferred gas hydrate deposits; (c) to look at systematic variations in subsurface structure in gas hydrate and non-hydrate areas; and (d) to estimate, if possible, the amounts of hydrates present within the gas hydrate stability zone. The multichannel profiles provide high-quality images with approximately 5 meters of vertical resolution and up to 2 km of penetration. This report gives an overview of the acquisition and data processing of the multichannel seismic reflection profiles and provides references and links to reports with more detailed information. Geologic interpretations of these seismic profiles regarding gas hydrate occurrence and distribution within the study areas of this investigation are given in Hart and others (2002).

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License: No license information was provided. If this work was prepared by an officer or employee of the United States government as part of that person's official duties it is considered a U.S. Government Work.

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Dates

Metadata Date March 7, 2017
Metadata Created Date December 2, 2017
Metadata Updated Date December 12, 2017
Reference Date(s) January 1, 2005 (publication)
Frequency Of Update asNeeded

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Image showing the extent and coverage of the data layer.

Additional Metadata

Resource Type Dataset
Metadata Date March 7, 2017
Metadata Created Date December 2, 2017
Metadata Updated Date December 12, 2017
Reference Date(s) January 1, 2005 (publication)
Responsible Party U.S. Geological Survey (Point of Contact)
Contact Email
Access Constraints Use Constraints: Public domain data from the U.S. Government are freely redistributable with proper metadata and source attribution. Please recognize the U.S. Geological Survey (USGS) as the source of this information., Access Constraints: None
Bbox East Long -88.997710
Bbox North Lat 28.657360
Bbox South Lat 28.026890
Bbox West Long -89.941090
Coupled Resource
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Frequency Of Update asNeeded
Graphic Preview Description Image showing the extent and coverage of the data layer.
Graphic Preview File https://pubs.usgs.gov/of/2005/1071/data/seismic/1998/nav/gom98shtallg.gif
Graphic Preview Type GIF
Guid
Licence Although this data set has been used by the U.S. Geological Survey (USGS), no warranty, expressed or implied, is made by the USGS as to the accuracy of the data and/or related materials. The act of distribution shall not constitute any such warranty, and no responsibility is assumed by the USGS in the use of these data or related materials. Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government.
Metadata Language
Metadata Type geospatial
Progress underDevelopment
Spatial Data Service Type
Spatial Reference System
Spatial Harvester true
Temporal Extent Begin 1998-06-01
Temporal Extent End 1998-06-30

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