Survey Identifier: GH7505
Format Acronym: MGD77
Data Center File Number: J2010005
Parameters Surveyed Code: 55500
File Creation Date (yyyymmdd): 19810911
Source Institution: GEOLOGICAL SURVEY OF JAPAN
Country: JAPAN
Platform Name: HAKUREI-MARU
Platform Type Code: 1
Platform Type: SHIP
Survey Departure Date (yyyymmdd): 19750716
Survey Arrival Date (yyyymmdd): 19750821
Topmost Latitude of Survey: +36
Bottommost Latitude: +24
Leftmost Longitude: +126
Rightmost Longitude: +140
General Digitizing Rate of Bathymetry: 82
General Digitizing Rate of Magnetics: 83
General Digitizing Rate of Gravity: 77
Additional Documentation: OLD NGDC:56010005
Number of Data Records: 6692
Min/Max Data Record:
Date: 1975 07 16
Latitude: +24.46000
Longitude: +126.04500
Bathymetry, 2- Way Traveltime: 000133
Bathymetry, Corrected Depth: 10.0
Magnetics Total Field, 1st Sensor: 423120
Magnetics Residual Field: -19940
Observed Gravity: 9788473
Free-Air Anomaly: -4577
Min/Max Data Record:
Date: 1975 08 21
Latitude: +35.67000
Longitude: +139.98167
Bathymetry, 2- Way Traveltime: 097067
Bathymetry, Corrected Depth: 7399.0
Magnetics Total Field, 1st Sensor: 468880
Magnetics Residual Field: +04790
Observed Gravity: 9798016
Free-Air Anomaly: +1539