Survey Identifier: YAQ7107
Format Acronym: MGD77
Data Center File Number: 07010030
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): DRS. G. HEATH, S. JOHNSON
Project: NAZCA PLATE, YAQUINA LONG OCEAN CRUISE 1971 LEG 7
Funding: IDOE
Survey Departure Date (yyyymmdd): 19720123
Port of Departure: CALLAO, PERU
Survey Arrival Date (yyyymmdd): 19720223
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: ONE AND TWO BOLT 40 CU. IN. AIRGUNS
Formats of Seismic Data: SINGLE CHANNEL ANALOG, MICROFILM
Topmost Latitude of Survey: -09
Bottommost Latitude: -12
Leftmost Longitude: -112
Rightmost Longitude: -077
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: 60
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: WH 1068 (SEE ADD DOC / 19)
Additional Documentation: 14 U.S. COMMERCE PIER G=980118.8, 15 WH1068 WOOLLARD AND ROSE 1963 PG 121
Number of Data Records: 18569
Min/Max Data Record:
Date: 1972 01 23
Latitude: -11.72370
Longitude: -111.87000
Bathymetry, 2- Way Traveltime: 001800
Bathymetry, Corrected Depth: 135.0
Magnetics Total Field, 1st Sensor: 280640
Magnetics Residual Field: -07820
Free-Air Anomaly: -1877
Min/Max Data Record:
Date: 1972 02 23
Latitude: -9.26280
Longitude: -77.87310
Bathymetry, 2- Way Traveltime: 083525
Bathymetry, Corrected Depth: 6329.0
Magnetics Total Field, 1st Sensor: 312870
Magnetics Residual Field: +02960
Free-Air Anomaly: +0457