Survey Identifier: GH892-A
Format Acronym: MGD77
Data Center File Number: J2010027
Parameters Surveyed Code: 55533
File Creation Date (yyyymmdd): 19971201
Source Institution: GEOLOGICAL SURVEY OF JAPAN
Country: JAPAN
Platform Name: HAKUREI-MARU
Platform Type Code: 1
Platform Type: SHIP
Chief Scientist(s): YUKINOBU OKAMURA
Project: MARINE GEOLOGY OF EASTERN BORDER OF THE CENTRAL JAPAN SEA
Funding: AIST,MITI,JAPAN
Survey Departure Date (yyyymmdd): 19890522
Port of Departure: FUNABASHI,JAPAN
Survey Arrival Date (yyyymmdd): 19890612
Port of Arrival: NIIGATA,JAPAN
Navigation Instrumentation: MX1107 SATNAV & ML220 LORAN-C
Geodetic Datum/Position: SATFIX & LORAN-C INTEGRATED
Bathymetry Instrumentation: RAYTHEON 12KHZ PDR & 3.5KHZ SBP
Additional Forms of Bathymetric Data: ANALOG RECORDS
Magnetics Instrumentation: GEOMETRICS G801 PROTON PRECESSION MAG
Additional Forms of Magnetics Data: ANALOG RECORDS
Gravity Instrumentation: LACOSTE & ROMBERG SL-2 GRAVITY METER
Additional Forms of Gravity Data: ANALOG RECORDS
Seismic Instrumentation: TWO 120 CU.IN. AIRGUNS, WAVE SHAPE KIT
Formats of Seismic Data: ANALOG RECORDS
Topmost Latitude of Survey: +40
Bottommost Latitude: +37
Leftmost Longitude: +137
Rightmost Longitude: +140
General Digitizing Rate of Bathymetry: 011
Assumed Sound Velocity: 15000
Bathymetric Datum Code: 00
General Digitizing Rate of Magnetics: 011
General Sampling Rate of Magnetics: 06
Magnetic Sensor Tow Distance: 0200
Reference Field Code: 88
Reference Field: DGRF1985-90
General Digitizing Rate of Gravity: 010
General Sampling Rate of Gravity: 10
Theoretical Gravity Formula Code: 3
Theoretical Gravity Formula: IAG SYSTEM 1967
Reference System Code: 3
Reference System: SYSTEM IGSN 71
Corrections Applied: DRIFT CORRECTION 0.04 MGAL/DAY
Departure Base Station Gravity: 9797894
Departure Base Station Description: FUNABASHI,JAPAN
Arrival Base Station Gravity: 9797894
Arrival Base Station Description: FUNABASHI,JAPAN
Additional Documentation: BATHYMETRY CORRECTION ACCORDING TO CARTER'S TABLE
Number of Data Records: 17898
Min/Max Data Record:
Date: 1989 05 25
Latitude: +37.17862
Longitude: +137.83414
Bathymetry, 2- Way Traveltime: 000507
Bathymetry, Corrected Depth: 38.0
Magnetics Total Field, 1st Sensor: 472090
Magnetics Residual Field: -04960
Observed Gravity: 9798783
Free-Air Anomaly: -0449
Min/Max Data Record:
Date: 1989 06 12
Latitude: +39.65018
Longitude: +139.78702
Bathymetry, 2- Way Traveltime: 034853
Bathymetry, Corrected Depth: 2568.0
Magnetics Total Field, 1st Sensor: 488320
Magnetics Residual Field: +08033
Observed Gravity: 9801854
Free-Air Anomaly: +0809