Survey Identifier: HY4-891
Format Acronym: MGD77
Data Center File Number: 16030002
Parameters Surveyed Code: 555
File Creation Date (yyyymmdd): 19940408
Source Institution: GuangZhou Marine Geological Survey MGMR
Country: P.R.CHINA
Platform Name: HAI YANG-4
Platform Type Code: 1
Platform Type: SHIP
Chief Scientist(s): WANG GUANGYU
Project: HY4-891
Survey Departure Date (yyyymmdd): 19890715
Port of Departure: GUANG ZHOU P.R.CHINA
Survey Arrival Date (yyyymmdd): 19891213
Port of Arrival: GUANG ZHOU P.R.CHINA
Navigation Instrumentation: SAT.
Geodetic Datum/Position: SATELLITE
Bathymetry Instrumentation: Rayfheon 12KHZ
Magnetics Instrumentation: MAG-GRADIOMETER G821G
Gravity Instrumentation: KSS-5
Topmost Latitude of Survey: +11
Bottommost Latitude: +06
Leftmost Longitude: -151
Rightmost Longitude: -137
General Digitizing Rate of Bathymetry: 092
General Digitizing Rate of Magnetics: 076
Reference Field: IGRF-85
General Digitizing Rate of Gravity: 092
Theoretical Gravity Formula Code: 8
Theoretical Gravity Formula: CASSINIS 30
Number of Data Records: 3655
Min/Max Data Record:
Date: 1989 08 13
Latitude: +2.88406
Longitude: -150.51181
Bathymetry, Corrected Depth: 3008.3
Magnetics Total Field, 1st Sensor: 232583
Magnetics Residual Field: -96901
Observed Gravity: 9779359
Free-Air Anomaly: -2128
Min/Max Data Record:
Date: 1989 11 05
Latitude: +10.01485
Longitude: -54.36387
Bathymetry, Corrected Depth: 8591.1
Magnetics Total Field, 1st Sensor: 708000
Magnetics Residual Field: +92086
Observed Gravity: 9783770
Free-Air Anomaly: +2339