Survey Identifier: YAQ7102
Format Acronym: MGD77
Data Center File Number: 07010027
Parameters Surveyed Code: 55533
File Creation Date (yyyymmdd): 19750203
Source Institution: OREGON STATE UNIVERSITY
Country: U.S.A.
Platform Name: YAQUINA
Platform Type Code: 1
Platform Type: SHIP
Chief Scientist(s): DR. R. COUCH
Project: NAZCA PLATE, YAQUINA LONG OCEAN CRUISE 1971 LEG 2
Funding: ONR
Survey Departure Date (yyyymmdd): 19710829
Port of Departure: SAN DIEGO, CALIFORNIA
Survey Arrival Date (yyyymmdd): 19710915
Port of Arrival: PUNTARENAS, COSTA RICA
Navigation Instrumentation: SATELLITE
Geodetic Datum/Position: SATELLITE, DEAD RECKONING
Bathymetry Instrumentation: 12 AND 3.5 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: 40 AND 20 CU. IN. AIRGUNS
Formats of Seismic Data: SINGLE CHANNEL ANALOG, MICROFILM
Topmost Latitude of Survey: +29
Bottommost Latitude: +09
Leftmost Longitude: -116
Rightmost Longitude: -084
General Digitizing Rate of Bathymetry: 050
General Sampling Rate of Bathymetry: ADD DOC 18
Assumed Sound Velocity: 14300
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: 03
Reference Field: IGRF-65
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: 2
Theoretical Gravity Formula: INTERNAT. 1930
Reference System: SEE ADD DOC / 19
Corrections Applied: NONE
Departure Base Station Gravity: 9795308
Departure Base Station Description: (SEE ADD DOC / 20)
Additional Documentation: 12 SAMPLING RATES ARE 1, 2, AND 3 SECOND SWEEPS, 14 U.S. COMMERCE PIER G=980118.8, 15 SAN DIEGO F WORZEL 1965 PG. 364
Number of Data Records: 9622
Min/Max Data Record:
Date: 1971 08 29
Latitude: +9.49210
Longitude: -115.89830
Bathymetry, 2- Way Traveltime: 000250
Bathymetry, Corrected Depth: 19.0
Magnetics Total Field, 1st Sensor: 377840
Magnetics Residual Field: -02810
Free-Air Anomaly: -1753
Min/Max Data Record:
Date: 1971 09 15
Latitude: +28.43000
Longitude: -84.79730
Bathymetry, 2- Way Traveltime: 084750
Bathymetry, Corrected Depth: 6425.0
Magnetics Total Field, 1st Sensor: 439950
Magnetics Residual Field: +06280
Free-Air Anomaly: +1049