Survey Identifier: HT880113
Format Acronym: MGD77
Data Center File Number: J1010024
Parameters Surveyed Code: 55533
File Creation Date (yyyymmdd): 19900608
Source Institution: HYDROGRAPHIC DEPARTMENT
Country: JAPAN
Platform Name: TAKUYO
Platform Type Code: 1
Platform Type: SHIP
Chief Scientist(s): M.UCHIDA
Project: 14TH(LATTER) CONTINENTAL SHELF SURVEY
Funding: HYDROGRAPHIC DEP
Survey Departure Date (yyyymmdd): 19880113
Port of Departure: TOKYO,JAPAN
Survey Arrival Date (yyyymmdd): 19880126
Port of Arrival: TOKYO,JAPAN
Navigation Instrumentation: INTEGRATED NAVIGATION SYSTEM
Bathymetry Instrumentation: SEA-BEAM
Magnetics Instrumentation: PROTON MAGUNETMETER
Gravity Instrumentation: BODENSEEWERK KSS/30
Seismic Instrumentation: AIR-GUN,1500C,MULTI/SINGLE
Topmost Latitude of Survey: +28
Bottommost Latitude: +23
Leftmost Longitude: +142
Rightmost Longitude: +146
General Digitizing Rate of Bathymetry: 100
General Sampling Rate of Bathymetry: SECOND
Assumed Sound Velocity: 15000
Bathymetric Datum Code: 05
General Digitizing Rate of Magnetics: 100
General Sampling Rate of Magnetics: 60
Magnetic Sensor Tow Distance: 314
Reference Field Code: 12
Reference Field: IGRF-85
General Digitizing Rate of Gravity: 100
General Sampling Rate of Gravity: 60
Theoretical Gravity Formula Code: 3
Theoretical Gravity Formula: IAG SYSTEM(1967)
Reference System: JGSN 75
Departure Base Station Gravity: 9797783
Departure Base Station Description: JHDG0(TOKYO PORT)
Arrival Base Station Gravity: 9797783
Arrival Base Station Description: JHDG0(TOKYO PORT)
Additional Documentation: OLD NGDC:56060024
Number of Data Records: 1772
Min/Max Data Record:
Date: 1988 01 13
Latitude: +23.98967
Longitude: +142.48050
Bathymetry, Corrected Depth: 569.0
Magnetics Residual Field: -06480
Free-Air Anomaly: -2240
Min/Max Data Record:
Date: 1988 01 26
Latitude: +27.25867
Longitude: +145.01067
Bathymetry, Corrected Depth: 8820.0
Magnetics Residual Field: +03400
Free-Air Anomaly: +1730