Survey Identifier: HS8203


Format Acronym: MGD77
Data Center File Number: J1020027
Parameters Surveyed Code: 55513
File Creation Date (yyyymmdd): 19850527
Source Institution: HYDROGRAPHIC DEPARTMENT
Country: JAPAN
Platform Name: SHOYO
Platform Type Code: 1
Platform Type: SHIP
Chief Scientist(s): TAKAHIRO SATOH
Project: THE BASIC MAP OF SEA OF CONTINENTAL SHELVES
Funding: HYDROGRAPHIC DEP
Survey Departure Date (yyyymmdd): 19820524
Port of Departure: TOKYO
Survey Arrival Date (yyyymmdd): 19820702
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: +29
Bottommost Latitude: +27
Leftmost Longitude: +127
Rightmost Longitude: +131
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 : AMAMI O.SHIMA, REDUCTION AND COMPILATION HAVE BEEN MADE MAINLY BY Y.GANEKO,Y.HARADA, K.KOYAMA AND T.HIRAIWA OF GEODESY AND GEOPHYSICS DIVISION. *magnetics records follow bathy,grav; mag has poor nav pts,no times.
Number of Data Records: 8816

Min/Max Data Record:
Date: 1982 05 27
Latitude: +27.66615
Longitude: +127.13139
Bathymetry, Corrected Depth: 65.0
Magnetics Total Field, 1st Sensor: 404000
Observed Gravity: 9790636
Free-Air Anomaly: -0886

Min/Max Data Record:
Date: 1982 06 26
Latitude: +79.33150
Longitude: +130.21356
Bathymetry, Corrected Depth: 2620.0
Magnetics Total Field, 1st Sensor: 472900
Observed Gravity: 9793034
Free-Air Anomaly: +0967