Survey Identifier: PIQR04WT


Format Acronym: MGD77
Data Center File Number: 15040023
Parameters Surveyed Code: 55111
File Creation Date (yyyymmdd): 19800304
Source Institution: SCRIPPS INSTITUTION OF OCEANOGRAPHY
Country: USA
Platform Name: R/V THOMAS WASHINGTON
Platform Type Code: 1
Platform Type: SHIP
Chief Scientist(s): BRINTON E.
Project: PIQUIERO LEG 4
Survey Departure Date (yyyymmdd): 19690225
Port of Departure: VALPARAISO,CHILE
Survey Arrival Date (yyyymmdd): 19690310
Port of Arrival: CALLA0,PERU
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
Topmost Latitude of Survey: -12
Bottommost Latitude: -34
Leftmost Longitude: -082
Rightmost Longitude: -072
General Digitizing Rate of Bathymetry: 150
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: 1369

Min/Max Data Record:
Date: 1969 02 27
Latitude: -33.06080
Longitude: -81.86830
Bathymetry, 2- Way Traveltime: 000200
Bathymetry, Corrected Depth: 15.0
Magnetics Total Field, 1st Sensor: 260200
Magnetics Residual Field: -02650

Min/Max Data Record:
Date: 1969 03 10
Latitude: -12.06720
Longitude: -72.07750
Bathymetry, 2- Way Traveltime: 079500
Bathymetry, Corrected Depth: 6008.0
Magnetics Total Field, 1st Sensor: 284000
Magnetics Residual Field: +04300