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U.S. Geological Survey Open-File Report 02-002

Geological Framework Data from Long Island Sound, 1981-1990:

A Digital Data Release

East-Central Long Island Sound: AST83-2 Navigation Discussion


Skip Table of Contents group; go to navigation discussionOFR02-002 Home: return to OFR02-002 homepageINTRODUCTION: go to introductionSEISMIC DATA: Go to seismic data discussion
 Block Island Sound
 Eastern Long Island Sound
 East-Central Long Island Sound
 Summary Report
 Cruise Report
 Seismic Profiles
  Trackline Navigation
 West-Central Long Island Sound
 Western Long Island Sound
 Fishers Island Sound and Northeastern Long Island Sound  CORE DATA: Go to core data discussionPHOTO GALLERY: view photos of cruise activities and equipmentDATA CATALOG: Go to data catalog and browse available dataREFERENCES: view suggested referencesRELATED WEBSITES: go to a list of Long Island Sound related websitesACKNOWLEDGMENTS: view acknowledgmentsCONTACTS: view contact informationDISCLAIMER: view disclaimer informationREADME: view readme information


The map below shows the tracklines along which the seismic data (lines 1-25) were collected on leg 2 of the 1983 RV ASTERIAS cruise to east-central Long Island Sound.

Map illustration: R/V ASTERIAS cruise 83-2 tracklines in East-Central Long Island Sound and easternmost Long Island Sound.  Larger map will open in new browser window.

Map illustration: R/V ASTERIAS cruise 83-2 tracklines in East-Central Long Island Sound. Click on the above
 image to a open larger map in new a browser window.  Links to the navigation data are available in the table below.

The navigation files, which are located in the data/nav/83_2nav directory at the top level of this report, are provided in two formats:


ASCII comma-delimited text a83_2nav.txt

ArcView Shapefile

zip archive file
zip archive file

These files are a compilation of all the navigation collected on the cruise and have the following data fields: cruise id, date, time (EDST), seismic line, and latitude and longitude in decimal degrees. To download the navigation data from the DVD the user has a couple of options. One option is available while viewing any of the data files through the links above. The user may select the Save As option from the pulldown menu from the File option located on the menu bar. When prompted, the user may then enter the directory and filename of where the data file will be stored on disk. A second option is to access the DVD outside of a WWW browser and copy the file from the data/nav directory on the DVD to a desired location.

Connecticut Department of Environmental Protection

Department of the Interior > U.S. Geological Survey > Coastal and Marine Geology Program > Long Island Sound Studies
Contact: L.J. Poppe (")