Survey Identifier: GH7901
Format Acronym: MGD77
Data Center File Number: J2010012
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): 19790112
Survey Arrival Date (yyyymmdd): 19790313
Topmost Latitude of Survey: +36
Bottommost Latitude: +09
Leftmost Longitude: +139
Rightmost Longitude: -156
General Digitizing Rate of Bathymetry: 59
General Digitizing Rate of Magnetics: 69
General Digitizing Rate of Gravity: 59
Additional Documentation: OLD NGDC:56010012
Number of Data Records: 14912
Min/Max Data Record:
Date: 1979 01 12
Latitude: +0.02842
Longitude: -179.98928
Bathymetry, 2- Way Traveltime: 000387
Bathymetry, Corrected Depth: 29.0
Magnetics Total Field, 1st Sensor: 323340
Magnetics Residual Field: -79850
Observed Gravity: 9781341
Free-Air Anomaly: -3100
Min/Max Data Record:
Date: 1979 03 13
Latitude: +35.67941
Longitude: +179.99797
Bathymetry, 2- Way Traveltime: 141840
Bathymetry, Corrected Depth: 10638.0
Magnetics Total Field, 1st Sensor: 450840
Magnetics Residual Field: +47070
Observed Gravity: 9798555
Free-Air Anomaly: +8470