Survey Identifier: GOLFO844
Format Acronym: MGD77
Data Center File Number: 07150005
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): 19840426
Port of Departure: GUAYMAS, MEXICO
Survey Arrival Date (yyyymmdd): 19840517
Port of Arrival: GUAYMAS, MEXICO
Navigation Instrumentation: MAGNAVOX 1107RS SAT RCVR
Geodetic Datum/Position: TRANSIT SAT. FIXES / 1107RS DEAD RECK.
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: +26
Leftmost Longitude: -115
Rightmost Longitude: -110
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 TRANSIT SATELLITE AND DEAD RECKONING (A SECOND FILE CONT, AINS DATA BASED ON DETERMINATION OF POSITION BY ARGO). THE GRAVITY DATA IN TH, IS FILE HAS AN RMS CROSSING UNCERTAINTY OF 4.5 MILLIGAL FOR ALL CROSSINGS WITH, ITSELF AND WITH THE DATA IN THE SATELLITE/DR FILE).
Number of Data Records: 8744
Min/Max Data Record:
Date: 1984 04 26
Latitude: +26.96724
Longitude: -114.75368
Bathymetry, 2- Way Traveltime: 000225
Bathymetry, Corrected Depth: 17.0
Magnetics Total Field, 1st Sensor: 459220
Magnetics Residual Field: -05025
Observed Gravity: 9790472
Free-Air Anomaly: -0921
Min/Max Data Record:
Date: 1984 05 17
Latitude: +31.28790
Longitude: -110.88426
Bathymetry, 2- Way Traveltime: 026751
Bathymetry, Corrected Depth: 1994.0
Magnetics Total Field, 1st Sensor: 483340
Magnetics Residual Field: +08461
Observed Gravity: 9794071
Free-Air Anomaly: +0236