Survey Identifier: GOLFO843
Format Acronym: MGD77
Data Center File Number: 07150004
Parameters Surveyed Code: 55511
File Creation Date (yyyymmdd): 19841221
Source Institution: OREGON STATE UNIV., CONMAR STUDY GROUP
Country: USA
Platform Name: H1 MARIANO MATAMOROS
Platform Type Code: 1
Platform Type: SHIP
Chief Scientist(s): RICHARD COUCH, GORDON NESS
Project: GOLFO84, LEGS 3 AND 4
Funding: OFFICE OF NAVAL RES.
Survey Departure Date (yyyymmdd): 19840501
Port of Departure: GUAYMAS, MEXICO
Survey Arrival Date (yyyymmdd): 19840511
Port of Arrival: GUAYMAS, MEXICO
Navigation Instrumentation: ARGO NAVCUBE/MAGNAVOX 1107RS SAT RCVR
Geodetic Datum/Position: ARGO
Bathymetry Instrumentation: EDO 12KHZ FREQUENCY, 30-DEGREE BEAM
Additional Forms of Bathymetric Data: ANALOG RECORDS
Magnetics Instrumentation: GEOMETRICS G801/3 PROTON PRECESSION
Additional Forms of Magnetics Data: ANALOG RECORDS
Gravity Instrumentation: LACOSTE AND ROMBERG S42
Additional Forms of Gravity Data: ANALOG RECORDS
Seismic Instrumentation: NONE
Formats of Seismic Data: NONE
Topmost Latitude of Survey: +32
Bottommost Latitude: +28
Leftmost Longitude: -115
Rightmost Longitude: -112
General Digitizing Rate of Bathymetry: 050
General Sampling Rate of Bathymetry: 30/MINUTE
Assumed Sound Velocity: 15000
Bathymetric Datum Code: 00
Interpolation Scheme: (DATA NOT INTERPOLATED)
General Digitizing Rate of Magnetics: 010
General Sampling Rate of Magnetics: 10
Magnetic Sensor Tow Distance: 0200
Sensor Depth: 150
Reference Field Code: 88
Reference Field: IGRF-80
Method of Applying Residual Field: (NO RESIDUAL FIELD DERIVED)
General Digitizing Rate of Gravity: 010
General Sampling Rate of Gravity: 10
Theoretical Gravity Formula Code: 3
Theoretical Gravity Formula: IAG GRS 67 SYSTEM
Reference System Code: 2
Reference System: IGSN 71 SYSTEM
Corrections Applied: -0.0304 MGAL PER DAY (METER DRIFT)
Departure Base Station Gravity: 9791648
Departure Base Station Description: DMA LAGSN-77 9695-62 GUAYMAS
Arrival Base Station Gravity: 9791648
Arrival Base Station Description: DMA LAGSN-77 9695-62 GUAYMAS
Additional Documentation: THIS FILE IS ONE OF TWO OF MARINE DATA AND CONTAINS ONLY DATA BASED ON DETERMI, NATION OF POSITION BY ARGO (A SECOND FILE CONTAINS DATA BASED ON DETERMINATION, OF POSITION BY TRANSIT SATELLITE AND DR). THE GRAVITY DATA IN THIS FILE HAS, AN RMS CROSSING UNCERTAINTY OF 1.5 MILLIGAL FOR ALL CROSSINGS WITH ITSELF (I.E., EXCLUDING CROSSINGS WITH DATA IN THE SATELLITE/DR FILE).
Number of Data Records: 6320
Min/Max Data Record:
Date: 1984 05 01
Latitude: +28.96005
Longitude: -114.69800
Bathymetry, 2- Way Traveltime: 000175
Bathymetry, Corrected Depth: 13.0
Magnetics Total Field, 1st Sensor: 470850
Magnetics Residual Field: -01868
Observed Gravity: 9792128
Free-Air Anomaly: -0515
Min/Max Data Record:
Date: 1984 05 11
Latitude: +31.44282
Longitude: -112.49523
Bathymetry, 2- Way Traveltime: 011250
Bathymetry, Corrected Depth: 842.0
Magnetics Total Field, 1st Sensor: 486770
Magnetics Residual Field: +02502
Observed Gravity: 9794063
Free-Air Anomaly: +0013