Survey Identifier: GH7501
Format Acronym: MGD77
Data Center File Number: J2010003
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): 19750119
Survey Arrival Date (yyyymmdd): 19750217
Topmost Latitude of Survey: +36
Bottommost Latitude: +22
Leftmost Longitude: +122
Rightmost Longitude: +140
General Digitizing Rate of Bathymetry: 71
General Digitizing Rate of Magnetics: 72
General Digitizing Rate of Gravity: 68
Additional Documentation: OLD NGDC:56010003
Number of Data Records: 6036
Min/Max Data Record:
Date: 1975 01 19
Latitude: +22.53000
Longitude: +121.08000
Bathymetry, 2- Way Traveltime: 000307
Bathymetry, Corrected Depth: 23.0
Magnetics Total Field, 1st Sensor: 421580
Magnetics Residual Field: -15410
Observed Gravity: 9782390
Free-Air Anomaly: -7791
Min/Max Data Record:
Date: 1975 02 17
Latitude: +35.56832
Longitude: +144.98167
Bathymetry, 2- Way Traveltime: 115547
Bathymetry, Corrected Depth: 8879.0
Magnetics Total Field, 1st Sensor: 483490
Magnetics Residual Field: +13450
Observed Gravity: 9798092
Free-Air Anomaly: +3346