Survey Identifier: GH7703
Format Acronym: MGD77
Data Center File Number: J2010009
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): 19770615
Survey Arrival Date (yyyymmdd): 19770709
Topmost Latitude of Survey: +48
Bottommost Latitude: +37
Leftmost Longitude: +136
Rightmost Longitude: +148
General Digitizing Rate of Bathymetry: 56
General Digitizing Rate of Magnetics: 60
General Digitizing Rate of Gravity: 55
Additional Documentation: OLD NGDC:56010009
Number of Data Records: 5785
Min/Max Data Record:
Date: 1977 06 15
Latitude: +37.93330
Longitude: +136.17939
Bathymetry, 2- Way Traveltime: 000307
Bathymetry, Corrected Depth: 23.0
Magnetics Total Field, 1st Sensor: 472770
Magnetics Residual Field: -08910
Observed Gravity: 9799565
Free-Air Anomaly: -0628
Min/Max Data Record:
Date: 1977 07 09
Latitude: +47.38132
Longitude: +147.35889
Bathymetry, 2- Way Traveltime: 130653
Bathymetry, Corrected Depth: 9799.0
Magnetics Total Field, 1st Sensor: 519430
Magnetics Residual Field: +04910
Observed Gravity: 9807696
Free-Air Anomaly: +1616