Bathymetric, Magnetic and Seismic Survey Data from the MGD77 (Marine Geophysical Data, 1977) Data Base

Table of Contents

Identification Information
Spatial Reference Information
Distribution Information
Metadata Reference Information

1. IDENTIFICATION INFORMATION

DESCRIPTION                                                             
     Abstract:     This data set contains bathymetry, magnetic and gravity data collected during
     marine cruises from 1953 to the present. Coverage is worldwide.
     
     This data is stored in the MGD77 (Marine Geophysical Data) exchange format as
     described in the NOAA KGRD (Key to Geophysical Records Documentation) No. 10
     referenced below.  Each file contains a 1920-character Header record and a
     series of 120-character Data records for a particular cruise/leg (port to port
     operation). The Header record documents both the content and the structure of
     the subsequent Data records, containing that part of the data that remains
     invariant throughout the cruise. The Data record presents geophysical data
     (bathymetry, magnetics and gravity) and seismic information (shot-point
     identification) with a corresponding time and position.  Documentation that
     varies within the cruise is also included with the data records.

     References:

     Marine Geophysical Data Exchange Format - 'MGD77', Key to Marine Geophysical
     Records Documentation, No. 10, National Oceanic and Atmospheric Administration,
     Washington, DC, December, 1981.



SUPPLEMENTAL INFORMATION:

     Sources:

          SHIPS




     Sensors:

          GRAVIMETERS

          MAGNETOMETERS

          SEISMOMETERS





TIME PERIOD OF CONTENT

     Beginning Date:1953-01-01



SPATIAL DOMAIN

     Bounding Coordinates:

          West Bounding Coordinate:180W

          East Bounding Coordinate:180E

          South Bounding Coordinate:90S

          North Bounding Coordinate:90N


KEYWORDS

     Theme Keyword Thesaurus:

          GCMD Parameter Keywords

     Theme Keywords:



          EARTH SCIENCE  OCEANS  BATHYMETRY  WATER DEPTH  


          EARTH SCIENCE  OCEANS  MARINE GEOPHYSICS  MARINE GRAVITY FIELD  


          EARTH SCIENCE  OCEANS  MARINE GEOPHYSICS  MARINE MAGNETICS  


          EARTH SCIENCE  SOLID EARTH  GEODETICS/GRAVITY  GRAVITY  


          EARTH SCIENCE  SOLID EARTH  GEOMAGNETISM  REFERENCE FIELDS  


          EARTH SCIENCE  SOLID EARTH  GEOPHYSICAL FIELDS  GRAVITY FIELD  


          EARTH SCIENCE  SOLID EARTH  GEOPHYSICAL FIELDS  MAGNETIC FIELD  


          EARTH SCIENCE  SOLID EARTH  SEISMOLOGY  SEISMIC PROFILE  
          BATHYMETRY

          GEOMAGNETISM

          GRAVITY

          MARINE

          OCEANOGRAPHY

          SEISMIC SURVEYS

          TRACKLINES

     Place Keyword Thesaurus:

          GCMD Location Keywords



     Place Keywords:

          GLOBAL

          SEA FLOOR

6. DISTRIBUTION

DISTRIBUTOR

     Contact Organization Primary:NOAA/NESDIS/NGDC  National Geophysical Data Center, NOAA

     Contact Person:METZGER,DAN
     Address:

              NOAA/NESDIS/NGDC
              Mail Code E/GC3
              325 Broadway
              Boulder, CO 80303
              USA
     Telephone:(303) 497-6513 FAX

     Telephone:(303) 497-6542

     Telephone:320-6542 (FTS)

     Electronic Mail Address:INTERNET  info@mail.ngdc.noaa.gov


STANDARD ORDER PROCESS:
     Digital Form:CD-ROM

     Online Transfer Option:

          Network Address:

               Network Resource Name: http://www.ngdc.noaa.gov

     Offline Medium:60 Magnetic Tapes

7. METADATA REFERENCE INFORMATION

METADATA DATE:1994-06-27

METADATA REVIEW DATE:1992-04-09

METADATA CONTACT

     Contact Person:METZGER,DAN

     Address:

           NOAA/NESDIS/NGDC
           Mail Code E/GC3
           325 Broadway
           Boulder, CO 80303
           USA


     Telephone:(303) 497-6513 FAX

     Telephone:(303) 497-6542

     Telephone:320-6542 (FTS)

     Electronic Mail Address:INTERNET  info@mail.ngdc.noaa.gov