Survey Identifier: HS7803
Format Acronym: MGD77
Data Center File Number: J1020015
Parameters Surveyed Code: 55513
File Creation Date (yyyymmdd): 19810220
Source Institution: HYDROGRAPHIC DEPARTMENT
Country: JAPAN
Platform Name: SHOYO
Platform Type Code: 1
Platform Type: SHIP
Chief Scientist(s): TAKUZI OGINO
Funding: HYDROGRAPHIC DEP
Survey Departure Date (yyyymmdd): 19780605
Port of Departure: TOKYO
Survey Arrival Date (yyyymmdd): 19780714
Port of Arrival: TOKYO
Navigation Instrumentation: LORAN-A 2H7,2S2,LORAN-C 9970-X.W,NNSS
Geodetic Datum/Position: LORAN-A 2H7,2S2,LORAN-C 9970-X.W,NNSS
Bathymetry Instrumentation: 50KHZ,BEAM-WIDTH 15-DEGREE*2
Magnetics Instrumentation: PROTON MAG
Gravity Instrumentation: TSSG-H2 SENSOR:P2
Seismic Instrumentation: AIR-GUN
Formats of Seismic Data: ANALOG RECORD
Topmost Latitude of Survey: +39
Bottommost Latitude: +36
Leftmost Longitude: +141
Rightmost Longitude: +145
General Digitizing Rate of Bathymetry: 072
General Digitizing Rate of Magnetics: 050
General Sampling Rate of Magnetics: 60
Magnetic Sensor Tow Distance: 0250
Reference Field Code: 03
Reference Field: DGRF
Method of Applying Residual Field: DIURNAL CORRECTION USING DATA OF OBSERVATORY
General Digitizing Rate of Gravity: 072
Additional Documentation: CRUISE NAME:SAGAMI WAN, OBSERVER:K.MATSUMOTO(GRAVITY), TOTAL MAG INTENSITY SECULAR CHANGE COEFFICIENTS ARE DETERMINED LOCALLY. *magnetics records follow bathy,grav and have no times*, REDUCTION AND COMPILATION OF GRAVITY DATA HAVE BEEN MADE BY Y.GANEKO,Y.HARADA, AND Y.KOMATSU OF THE ASTRONOMICAL DIVISION. OLD NGDC:56080015
Number of Data Records: 12310
Min/Max Data Record:
Date: 1978 06 05
Latitude: +36.92611
Longitude: +141.00975
Bathymetry, Corrected Depth: 4.0
Magnetics Total Field, 1st Sensor: 452600
Magnetics Residual Field: -05040
Observed Gravity: 9797190
Free-Air Anomaly: -1805
Min/Max Data Record:
Date: 1978 07 10
Latitude: +38.08636
Longitude: +144.48430
Bathymetry, Corrected Depth: 7800.0
Magnetics Total Field, 1st Sensor: 470200
Magnetics Residual Field: +03427
Observed Gravity: 9801906
Free-Air Anomaly: +2597