Survey Identifier: YAQ7106
Format Acronym: MGD77
Data Center File Number: 07010029
Parameters Surveyed Code: 55533
File Creation Date (yyyymmdd): 19781231
Source Institution: OREGON STATE UNIVERSITY
Country: U.S.A.
Platform Name: YAQUINA
Platform Type Code: 1
Platform Type: SHIP
Chief Scientist(s): R. COUCH, L. KULM, AND S JOHNSON
Project: NAZCA PLATE, YAQUINA LONG OCEAN CRUISE 1971 LEG 6
Funding: IDOE
Survey Departure Date (yyyymmdd): 19720105
Port of Departure: CALLAO, PERU
Survey Arrival Date (yyyymmdd): 19720120
Port of Arrival: CALLAO, PERU
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 CU. IN AIRGUN
Formats of Seismic Data: SINGLE CHANNEL ANALOG, MICROFILM
Topmost Latitude of Survey: -12
Bottommost Latitude: -19
Leftmost Longitude: -080
Rightmost Longitude: -073
General Digitizing Rate of Bathymetry: 050
General Sampling Rate of Bathymetry: 1 SEC SWEEP
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 / 18
Corrections Applied: NONE
Departure Base Station Gravity: 9783127
Departure Base Station Description: SEE ADD DOC / 19
Additional Documentation: 14 U.S. COMMERCE PIER G=980118.8, 15 WH1068 WOOLLARD AND ROSE PG 121
Number of Data Records: 5822
Min/Max Data Record:
Date: 1972 01 05
Latitude: -18.09030
Longitude: -79.47090
Bathymetry, 2- Way Traveltime: 000925
Bathymetry, Corrected Depth: 69.0
Magnetics Total Field, 1st Sensor: 264390
Magnetics Residual Field: -02610
Free-Air Anomaly: -2101
Min/Max Data Record:
Date: 1972 01 20
Latitude: -12.01330
Longitude: -73.92940
Bathymetry, 2- Way Traveltime: 097275
Bathymetry, Corrected Depth: 7405.0
Magnetics Total Field, 1st Sensor: 366490
Magnetics Residual Field: +88090
Free-Air Anomaly: +0396