Survey Identifier: GH7601
Format Acronym: MGD77
Data Center File Number: J2010006
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): 19760116
Survey Arrival Date (yyyymmdd): 19760229
Topmost Latitude of Survey: +27
Bottommost Latitude: +04
Leftmost Longitude: +145
Rightmost Longitude: -157
General Digitizing Rate of Bathymetry: 73
General Digitizing Rate of Magnetics: 76
General Digitizing Rate of Gravity: 68
Additional Documentation: OLD NGDC:56010006
Number of Data Records: 9285
Min/Max Data Record:
Date: 1976 01 16
Latitude: +4.66000
Longitude: -179.79500
Bathymetry, 2- Way Traveltime: 000533
Bathymetry, Corrected Depth: 40.0
Magnetics Total Field, 1st Sensor: 322200
Magnetics Residual Field: -14720
Observed Gravity: 9780411
Free-Air Anomaly: -0621
Min/Max Data Record:
Date: 1976 02 29
Latitude: +26.00333
Longitude: +179.99833
Bathymetry, 2- Way Traveltime: 115547
Bathymetry, Corrected Depth: 8666.0
Magnetics Total Field, 1st Sensor: 394690
Magnetics Residual Field: +05780
Observed Gravity: 9792592
Free-Air Anomaly: +2675