Survey Identifier: PIQR01WT
Format Acronym: MGD77
Data Center File Number: 15040020
Parameters Surveyed Code: 55113
File Creation Date (yyyymmdd): 19811109
Source Institution: SCRIPPS INSTITUTION OF OCEANOGRAPHY
Country: USA
Platform Name: R/V THOMAS WASHINGTON
Platform Type Code: 1
Platform Type: SHIP
Chief Scientist(s): BIERI
Project: PIQUIERO LEG 1
Survey Departure Date (yyyymmdd): 19681209
Port of Departure: SAN DIEGO,CALIFORNIA
Survey Arrival Date (yyyymmdd): 19690101
Port of Arrival: ANTOFAGASTA,CHILE
Navigation Instrumentation: SATNAV,AUTOLOG GYRO + EMLOG
Geodetic Datum/Position: LINEAR INTERP.BETWEEN ADJACENT FIXES
Bathymetry Instrumentation: 12KHZ/GIFFT RECORDER/WIDE(60DEG)BEAM
Additional Forms of Bathymetric Data: ANALOGUE RECORDS,PUNCHED CARDS
Magnetics Instrumentation: VARIAN MFD PROTON PRECESSION MOD 4970
Additional Forms of Magnetics Data: ANAL.RECORDS,CARDS
Seismic Instrumentation: 40CU.IN.AIRGUN,10-300HZ,GIFFT RECORDER
Formats of Seismic Data: ANAL.RECORDS,35MM MICROFILM
Topmost Latitude of Survey: -16
Bottommost Latitude: -27
Leftmost Longitude: -101
Rightmost Longitude: -070
General Digitizing Rate of Bathymetry: 050
General Sampling Rate of Bathymetry: 1SECONDSWEEP
Assumed Sound Velocity: 14630
Bathymetric Datum Code: 00
Interpolation Scheme: 5 MINUTE INTERVAL
General Digitizing Rate of Magnetics: 060
General Sampling Rate of Magnetics: 06
Reference Field Code: 03
Reference Field: IGRF 1965
Method of Applying Residual Field: LIN.INTERP.AT 30DEG C/C OR 500MI ALONG TRACK
Number of Data Records: 4148
Min/Max Data Record:
Date: 1968 12 23
Latitude: -26.67160
Longitude: -100.36040
Bathymetry, 2- Way Traveltime: 000774
Bathymetry, Corrected Depth: 58.0
Magnetics Total Field, 1st Sensor: 256750
Magnetics Residual Field: -04700
Min/Max Data Record:
Date: 1969 01 01
Latitude: -16.19090
Longitude: -70.76510
Bathymetry, 2- Way Traveltime: 099774
Bathymetry, Corrected Depth: 7602.0
Magnetics Total Field, 1st Sensor: 305900
Magnetics Residual Field: +08900