Survey Identifier: BAJA76B
Format Acronym: MGD77
Data Center File Number: 07120003
Parameters Surveyed Code: 55513
File Creation Date (yyyymmdd): 19770315
Source Institution: OREGON STATE UNIVERSITY
Country: U.S.A.-MEXICO
Platform Name: DM-20
Platform Type Code: 1
Platform Type: SHIP
Chief Scientist(s): GUSTAVO CALDERON,GERALD CONNARD
Project: BAJA 1976 LEG B
Funding: O.N.R. , MEXICO
Survey Departure Date (yyyymmdd): 19760714
Port of Departure: MAZATLAN, MEXICO
Survey Arrival Date (yyyymmdd): 19760728
Port of Arrival: ENSENADA, MEXICO
Navigation Instrumentation: SATELLITE
Geodetic Datum/Position: SATELLITE/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 CU. IN. AIRGUN
Formats of Seismic Data: SINGLE CHANNEL ANALOG, MICROFILM
Topmost Latitude of Survey: +31
Bottommost Latitude: +22
Leftmost Longitude: -117
Rightmost Longitude: -106
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: -.19 MGAL PER DAY DRIFT
Departure Base Station Gravity: 9788388
Departure Base Station Description: DOD-1499-2 / DMAAC REF PUB 25
Arrival Base Station Gravity: 9795177
Arrival Base Station Description: SEE ADD. DOC / 19,20,21
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: 6019
Min/Max Data Record:
Date: 1976 07 14
Latitude: +22.05170
Longitude: -116.70670
Bathymetry, 2- Way Traveltime: 000200
Bathymetry, Corrected Depth: 15.0
Magnetics Total Field, 1st Sensor: 435670
Magnetics Residual Field: -07050
Free-Air Anomaly: -1104
Min/Max Data Record:
Date: 1976 07 28
Latitude: +30.45670
Longitude: -106.58830
Bathymetry, 2- Way Traveltime: 060000
Bathymetry, Corrected Depth: 4501.0
Magnetics Total Field, 1st Sensor: 479480
Magnetics Residual Field: +07020
Free-Air Anomaly: +0500