Survey Identifier: BAJA76A
Format Acronym: MGD77
Data Center File Number: 07120002
Parameters Surveyed Code: 55513
File Creation Date (yyyymmdd): 19770314
Source Institution: OREGON STATE UNIVERSITY
Country: U.S.A.
Platform Name: DM 20
Platform Type Code: 1
Platform Type: SHIP
Chief Scientist(s): GERALD CONNARD,GUSTAVO CALDERON
Project: BAJA 1976 LEG A
Funding: O.N.R. , MEXICO
Survey Departure Date (yyyymmdd): 19760703
Port of Departure: ENSENADA, MEXICO
Survey Arrival Date (yyyymmdd): 19760712
Port of Arrival: MAZATLAN, MEXICO
Navigation Instrumentation: OMEGA, RADAR, VISUAL
Geodetic Datum/Position: RADAR, VISUAL / DEAD RECKONING
Bathymetry Instrumentation: 12 KHZ WIDE BEAM (60 DEG)
Additional Forms of Bathymetric Data: ANALOG RECORDS, MICROFILM
Magnetics Instrumentation: GEOMETRICS G801/3 PROTON PRECESSION
Additional Forms of Magnetics Data: ANALOG RECORDS
Gravity Instrumentation: LACOSTE AND ROMBERG AIR-SEA S-42
Additional Forms of Gravity Data: ANALOG RECORDS
Seismic Instrumentation: 20,40 CU. IN AIR GUNS
Formats of Seismic Data: SINGLE CHANNEL ANALOG, MICROFILM
Topmost Latitude of Survey: +32
Bottommost Latitude: +20
Leftmost Longitude: -117
Rightmost Longitude: -105
General Digitizing Rate of Bathymetry: 050
General Sampling Rate of Bathymetry: 2 SEC SWEEP
Assumed Sound Velocity: 14630
Bathymetric Datum Code: 00
Interpolation Scheme: NONE
General Digitizing Rate of Magnetics: 050
General Sampling Rate of Magnetics: 03
Magnetic Sensor Tow Distance: 215
Sensor Depth: 30
Reference Field Code: 04
Reference Field: IGRF 75
Method of Applying Residual Field: LINEAR INTERPOLATION BETWEEN NAVIGATION POINTS
General Digitizing Rate of Gravity: 050
General Sampling Rate of Gravity: 00
Theoretical Gravity Formula Code: 3
Theoretical Gravity Formula: IAG SYSTEM 1967
Reference System Code: 3
Reference System: IGSN-71
Corrections Applied: -.63 MGAL PER DAY DRIFT
Departure Base Station Gravity: 9795177
Departure Base Station Description: SEE ADD. DOC / 19,20,21
Arrival Base Station Gravity: 9788388
Arrival Base Station Description: DOD-1499-2 / DMAAC REF PUB 25
Additional Documentation: ALSO SONOBUOY WIDE ANGLE REFRACTION, 15 OSU BASE STATION ON 'B' STREET PIER WHICH IS TIED TO WA 453, WOLLARD AND, 15 ROSE 1963 PG 94 MINUS 14.5 MGAL=979519.1 TO REFLECT U.S. COMMERCE PIER, 15 G=980104.3
Number of Data Records: 4136
Min/Max Data Record:
Date: 1976 07 03
Latitude: +20.43500
Longitude: -116.80500
Bathymetry, 2- Way Traveltime: 000275
Bathymetry, Corrected Depth: 21.0
Magnetics Total Field, 1st Sensor: 432540
Magnetics Residual Field: -05760
Free-Air Anomaly: -1816
Min/Max Data Record:
Date: 1976 07 12
Latitude: +31.75670
Longitude: -105.31500
Bathymetry, 2- Way Traveltime: 052250
Bathymetry, Corrected Depth: 3908.0
Magnetics Total Field, 1st Sensor: 488600
Magnetics Residual Field: +09360
Free-Air Anomaly: +1001