Survey Identifier: HS8202


Format Acronym: MGD77
Data Center File Number: J1020026
Parameters Surveyed Code: 53513
File Creation Date (yyyymmdd): 19850527
Source Institution: HYDROGRAPHIC DEPARTMENT
Country: JAPAN
Platform Name: SHOYO
Platform Type Code: 1
Platform Type: SHIP
Chief Scientist(s): H. NAKAGAWA
Project: THE BASIC MAP OF SEA OF CONTINENTAL SHELVES
Funding: HYDROGRAPHIC DEP
Survey Departure Date (yyyymmdd): 19820410
Port of Departure: TOKYO
Survey Arrival Date (yyyymmdd): 19820507
Port of Arrival: TOKYO
Navigation Instrumentation: NNSS,LORAN-C 9970-X,Y
Geodetic Datum/Position: NNSS,LORAN-C 9970-X,Y
Bathymetry Instrumentation: 50KHZ,BEAM-WIDTH 15-DEGREE*2
Additional Forms of Bathymetric Data: ANALOG RECORD
Gravity Instrumentation: TSSG-H2 SENSOR:P2,P3
Topmost Latitude of Survey: +27
Bottommost Latitude: +25
Leftmost Longitude: +123
Rightmost Longitude: +126
General Digitizing Rate of Bathymetry: 050
General Sampling Rate of Bathymetry: 1/SECOND
Assumed Sound Velocity: 15000
Bathymetric Datum Code: 07
General Digitizing Rate of Gravity: 050
General Sampling Rate of Gravity: 00
Theoretical Gravity Formula Code: 3
Theoretical Gravity Formula: IAG SYSTEM(1967)
Reference System: SYSTEM JGSN75
Corrections Applied: DRIFT ETOVOS
Departure Base Station Gravity: 9797715
Departure Base Station Description: TOKYO 35-38.0N,139-46.7E
Arrival Base Station Gravity: 9797715
Arrival Base Station Description: TOKYO 35-38.0N,139-46.7E
Additional Documentation: CRUISE NAME : ISHIGAKI ZIMA SHUHEN, REDUCTION AND COMPILATION HAVE BEEN MADE MAINLY BY Y.GANEKO,Y.HARADA, K.KOYAMA AND T.HIRAIWA OF GEODESY AND GEOPHYSICS DIVISION. OLD NGDC:56080026
Number of Data Records: 3072

Min/Max Data Record:
Date: 1982 04 14
Latitude: +25.46451
Longitude: +123.97836
Bathymetry, Corrected Depth: 126.0
Observed Gravity: 9790010
Free-Air Anomaly: -0059

Min/Max Data Record:
Date: 1982 05 02
Latitude: +26.77815
Longitude: +125.35181
Bathymetry, Corrected Depth: 2200.0
Observed Gravity: 9791722
Free-Air Anomaly: +1182