Survey Identifier: GH7902
Format Acronym: MGD77
Data Center File Number: J2010013
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): 19790416
Survey Arrival Date (yyyymmdd): 19790515
Topmost Latitude of Survey: +36
Bottommost Latitude: +21
Leftmost Longitude: +136
Rightmost Longitude: +146
General Digitizing Rate of Bathymetry: 54
General Digitizing Rate of Magnetics: 60
General Digitizing Rate of Gravity: 53
Additional Documentation: OLD NGDC:56010013
Number of Data Records: 7722
Min/Max Data Record:
Date: 1979 04 16
Latitude: +0.13732
Longitude: +1.71825
Bathymetry, 2- Way Traveltime: 000387
Bathymetry, Corrected Depth: 29.0
Magnetics Total Field, 1st Sensor: 378610
Magnetics Residual Field: -11060
Observed Gravity: 9781019
Free-Air Anomaly: -8333
Min/Max Data Record:
Date: 1979 05 15
Latitude: +35.83989
Longitude: +145.18433
Bathymetry, 2- Way Traveltime: 116067
Bathymetry, Corrected Depth: 8921.0
Magnetics Total Field, 1st Sensor: 460180
Magnetics Residual Field: +58680
Observed Gravity: 9800368
Free-Air Anomaly: +8989