Survey Identifier: HS860306

Format Acronym: MGD77
Data Center File Number: J1020032
Parameters Surveyed Code: 51511
File Creation Date (yyyymmdd): 19910920
Country: JAPAN
Platform Name: SHOYO
Platform Type Code: 1
Platform Type: SHIP
Chief Scientist(s): H.NAKAGAWA
Survey Departure Date (yyyymmdd): 19860306
Port of Departure: TOKO JAPAN
Survey Arrival Date (yyyymmdd): 19860322
Port of Arrival: TOKYO JAPAN
Navigation Instrumentation: SATELLITE/LORAN-C
Geodetic Datum/Position: SATELLAITE/LORAN-C
Bathymetry Instrumentation: PGR 12KHZ,34KHZ WIDE BEAM
Additional Forms of Bathymetric Data: ANALOG RECORDS
Additional Forms of Gravity Data: ANALOG RECORDS
Topmost Latitude of Survey: +35
Bottommost Latitude: +32
Leftmost Longitude: +138
Rightmost Longitude: +141
General Digitizing Rate of Bathymetry: 010
Assumed Sound Velocity: 15000
Bathymetric Datum Code: 00
General Digitizing Rate of Gravity: 010
General Sampling Rate of Gravity: 30
Theoretical Gravity Formula Code: 3
Theoretical Gravity Formula: IAG SYSTEM1967
Reference System Code: 3
Reference System: SYSTEM IGSN71
Corrections Applied: DRIFT=+.1MGAL/DAY
Departure Base Station Gravity: 9797677
Arrival Base Station Gravity: 9797677
Additional Documentation: OLD NGDC:56080032
Number of Data Records: 12798

Min/Max Data Record:
Date: 1986 03 06
Latitude: +32.95099
Longitude: +138.38806
Bathymetry, Corrected Depth: 36.0
Observed Gravity: 9795445
Free-Air Anomaly: -0814

Min/Max Data Record:
Date: 1986 03 20
Latitude: +34.19162
Longitude: +140.38033
Bathymetry, Corrected Depth: 3941.0
Observed Gravity: 9798321
Free-Air Anomaly: +2196