Survey Identifier: HT8605


Format Acronym: MGD77
Data Center File Number: J1010012
Parameters Surveyed Code: 55555
File Creation Date (yyyymmdd): 19881021
Source Institution: HYDROGRAPHIC DEPARTMENT
Country: JAPAN
Platform Name: TAKUYO
Platform Type Code: 1
Platform Type: SHIP
Chief Scientist(s): TAKASHIGE HORII
Funding: HYDROGRAPHIC DEP
Survey Departure Date (yyyymmdd): 19860531
Port of Departure: TOKYO
Survey Arrival Date (yyyymmdd): 19860618
Port of Arrival: TOKYO
Navigation Instrumentation: SAT/LORAN-C
Bathymetry Instrumentation: SEABEAM BATHYMETRIC SYSTEM 12KHZ
Additional Forms of Bathymetric Data: ANALOG RECORDS
Magnetics Instrumentation: PROTON PRECESSION MAGNETOMETER
Additional Forms of Magnetics Data: ANALOG RECORDS
Gravity Instrumentation: GRAVIMETER KSS/30 BODENSEEWERK GEOSYSTEM
Seismic Instrumentation: 352 OR 466-CUIN. AIRGUN 1 OR 12 CHANNELS
Formats of Seismic Data: 1CH-ANALOG 12CH-DIGITAL
Topmost Latitude of Survey: +34
Bottommost Latitude: +29
Leftmost Longitude: +125
Rightmost Longitude: +130
General Digitizing Rate of Bathymetry: 100
General Sampling Rate of Bathymetry: 2-10 SECOND
Interpolation Scheme: NO INTERPOLATED
General Digitizing Rate of Magnetics: 100
General Sampling Rate of Magnetics: 60
Magnetic Sensor Tow Distance: 0314
Sensor Depth: 03140
Reference Field Code: 88
Reference Field: IGRF 1985
General Digitizing Rate of Gravity: 099
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:56060012
Number of Data Records: 1690

Min/Max Data Record:
Date: 1986 06 01
Latitude: +29.53550
Longitude: +125.98250
Bathymetry, Corrected Depth: 64.0
Magnetics Residual Field: -03790
Free-Air Anomaly: -0130

Min/Max Data Record:
Date: 1986 06 13
Latitude: +33.61417
Longitude: +129.73017
Bathymetry, Corrected Depth: 9999.0
Magnetics Residual Field: +03950
Free-Air Anomaly: +0810