Survey Identifier: GH7801
Format Acronym: MGD77
Data Center File Number: J2010010
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): 19780106
Survey Arrival Date (yyyymmdd): 19780306
Topmost Latitude of Survey: +36
Bottommost Latitude: -19
Leftmost Longitude: +139
Rightmost Longitude: -136
General Digitizing Rate of Bathymetry: 44
General Digitizing Rate of Magnetics: 69
General Digitizing Rate of Gravity: 71
Additional Documentation: OLD NGDC:56010010
Number of Data Records: 12382
Min/Max Data Record:
Date: 1978 01 06
Latitude: -18.79784
Longitude: -179.99999
Bathymetry, 2- Way Traveltime: 000227
Bathymetry, Corrected Depth: 17.0
Magnetics Total Field, 1st Sensor: 324930
Magnetics Residual Field: -69370
Observed Gravity: 9780058
Free-Air Anomaly: -3388
Min/Max Data Record:
Date: 1978 03 06
Latitude: +35.67909
Longitude: +179.99991
Bathymetry, 2- Way Traveltime: 115560
Bathymetry, Corrected Depth: 8880.0
Magnetics Total Field, 1st Sensor: 681310
Magnetics Residual Field: +42680
Observed Gravity: 9798483
Free-Air Anomaly: +3326