Survey Identifier: GH7904
Format Acronym: MGD77
Data Center File Number: J2010015
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): 19790713
Survey Arrival Date (yyyymmdd): 19790811
Topmost Latitude of Survey: +36
Bottommost Latitude: -29
Leftmost Longitude: +137
Rightmost Longitude: +144
General Digitizing Rate of Bathymetry: 58
General Digitizing Rate of Magnetics: 65
General Digitizing Rate of Gravity: 57
Additional Documentation: OLD NGDC:56010015
Number of Data Records: 7315
Min/Max Data Record:
Date: 1979 07 13
Latitude: -0.00975
Longitude: -160.24230
Bathymetry, 2- Way Traveltime: 000307
Bathymetry, Corrected Depth: 23.0
Magnetics Total Field, 1st Sensor: 417500
Magnetics Residual Field: -69050
Observed Gravity: 9780490
Free-Air Anomaly: -3869
Min/Max Data Record:
Date: 1979 08 11
Latitude: +35.67940
Longitude: +143.58688
Bathymetry, 2- Way Traveltime: 125053
Bathymetry, Corrected Depth: 9650.0
Magnetics Total Field, 1st Sensor: 544240
Magnetics Residual Field: +46190
Observed Gravity: 9802065
Free-Air Anomaly: +7500