Survey Identifier: HT900108


Format Acronym: MGD77
Data Center File Number: J1010039
Parameters Surveyed Code: 53533
File Creation Date (yyyymmdd): 19910920
Source Institution: HYDROGRAPHIC DEPARTMENT
Country: JAPAN
Platform Name: TAKUYO
Platform Type Code: 1
Platform Type: SHIP
Chief Scientist(s): K.IKEDA, T.KONDO
Project: THE 20TH SURVEY OF THE CONTINENTAL SHELF
Funding: HYDROGRAPHIC DEP
Survey Departure Date (yyyymmdd): 199001
Port of Departure: TOKYO
Survey Arrival Date (yyyymmdd): 199001
Port of Arrival: TOKYO
Navigation Instrumentation: INTEGRATED NAVIGATION SYSTEM
Bathymetry Instrumentation: SEABEAM BATHYMETRIC SYSTEM 12KHZ
Additional Forms of Bathymetric Data: ANALOG RECORDS
Magnetics Instrumentation: GM-123, PMM-100
Additional Forms of Magnetics Data: ANALOG RECORDS
Gravity Instrumentation: GRAVIMETER KSS-30
Additional Forms of Gravity Data: ANALOG RECORDS
Seismic Instrumentation: T.I. DFS-V
Topmost Latitude of Survey: +36
Bottommost Latitude: +33
Leftmost Longitude: +138
Rightmost Longitude: +141
General Digitizing Rate of Bathymetry: 015
General Digitizing Rate of Gravity: 015
Additional Documentation: OLD NGDC:56060039
Number of Data Records: 10586

Min/Max Data Record:
Date: 1990 01 08
Latitude: +33.33265
Longitude: +138.43130
Bathymetry, Corrected Depth: 1.0
Observed Gravity: 9795752
Free-Air Anomaly: -0541

Min/Max Data Record:
Date: 1990 01 22
Latitude: +35.62361
Longitude: +140.05732
Bathymetry, Corrected Depth: 10400.0
Observed Gravity: 9798318
Free-Air Anomaly: +1310