Survey Identifier: GH7702
Format Acronym: MGD77
Data Center File Number: J2010008
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): 19770419
Survey Arrival Date (yyyymmdd): 19770527
Topmost Latitude of Survey: +40
Bottommost Latitude: +30
Leftmost Longitude: +126
Rightmost Longitude: +140
General Digitizing Rate of Bathymetry: 62
General Digitizing Rate of Magnetics: 63
General Digitizing Rate of Gravity: 64
Additional Documentation: OLD NGDC:56010008
Number of Data Records: 8652
Min/Max Data Record:
Date: 1977 04 19
Latitude: +30.83667
Longitude: +126.38833
Bathymetry, 2- Way Traveltime: 000333
Bathymetry, Corrected Depth: 25.0
Magnetics Total Field, 1st Sensor: 455610
Magnetics Residual Field: -09300
Observed Gravity: 9793144
Free-Air Anomaly: -6530
Min/Max Data Record:
Date: 1977 05 27
Latitude: +39.86000
Longitude: +139.99167
Bathymetry, 2- Way Traveltime: 124080
Bathymetry, Corrected Depth: 9306.0
Magnetics Total Field, 1st Sensor: 514700
Magnetics Residual Field: +30730
Observed Gravity: 9802482
Free-Air Anomaly: +3051