Survey Identifier: HT861016


Format Acronym: MGD77
Data Center File Number: J1010017
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): K.KETO
Project: 10TH(FIRST) CONTINENTAL SHELF SURVEY
Funding: HYDROGRAPHIC DEP
Survey Departure Date (yyyymmdd): 19861016
Port of Departure: TOKYO,JAPAN
Survey Arrival Date (yyyymmdd): 19861028
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: +30
Bottommost Latitude: +25
Leftmost Longitude: +126
Rightmost Longitude: +131
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:56060017
Number of Data Records: 1715

Min/Max Data Record:
Date: 1986 10 16
Latitude: +25.96483
Longitude: +126.48117
Bathymetry, Corrected Depth: 109.0
Magnetics Residual Field: -02160
Free-Air Anomaly: -1190

Min/Max Data Record:
Date: 1986 10 28
Latitude: +29.95883
Longitude: +130.35717
Bathymetry, Corrected Depth: 6870.0
Magnetics Residual Field: +03360
Free-Air Anomaly: +0860