Survey Identifier: HT91T260
Format Acronym: MGD77
Data Center File Number: J1010055
Parameters Surveyed Code: 55533
File Creation Date (yyyymmdd): 19960307
Source Institution: HYDROGRAPHIC DEPARTMENT
Country: JAPAN
Platform Name: TAKUYO
Platform Type Code: 1
Platform Type: SHIP
Chief Scientist(s): OKINO MUTUTO
Project: 26TH AREA(FIRST)CONTINENTAL SHELF SURVEY
Funding: HYDROGRAPHIC DEP
Survey Departure Date (yyyymmdd): 19910420
Survey Arrival Date (yyyymmdd): 19911219
Port of Arrival: TOKYO,JAPAN
Navigation Instrumentation: GPS/NNSS/LORAN-C
Geodetic Datum/Position: INTEGRATED NAVIGATION SYSTEM
Bathymetry Instrumentation: SEA-BEAM BATHYMETRIC SYSTEM 12KHZ
Gravity Instrumentation: ONBOARD GRAVIMETER SYSTEM (GMBH KSS/30)
Topmost Latitude of Survey: +31
Bottommost Latitude: +26
Leftmost Longitude: +141
Rightmost Longitude: +146
General Digitizing Rate of Bathymetry: 10
General Digitizing Rate of Magnetics: 101
General Digitizing Rate of Gravity: 10
Theoretical Gravity Formula Code: 3
Reference System: JGSN 75
Departure Base Station Gravity: 9797783
Departure Base Station Description: JHDGO(TOKYO PORT)
Arrival Base Station Gravity: 9797783
Arrival Base Station Description: JHDGO(TOKYO PORT)
Additional Documentation: Corection for sound velocity was applied to the seabeam data using tables for, the area No.53 in Echo-sounding Correction Tables NP 139 (Hydrographic Dept. UK,1980).
Number of Data Records: 567
Min/Max Data Record:
Date: 1991 05 07
Latitude: +26.82617
Longitude: +141.92467
Bathymetry, Corrected Depth: 2440.0
Magnetics Residual Field: +00000
Free-Air Anomaly: -2600
Min/Max Data Record:
Date: 1991 12 04
Latitude: +30.04067
Longitude: +145.04550
Bathymetry, Corrected Depth: 9770.0
Magnetics Residual Field: +00000
Free-Air Anomaly: +0840