Survey Identifier: POL7303


Format Acronym: MGD77
Data Center File Number: 03040060
Parameters Surveyed Code: 55530
File Creation Date (yyyymmdd): 19800209
Source Institution: NOAA/POL
Country: UNITED STATES
Platform Name: OCEANOGRAPHER
Platform Type Code: 1
Platform Type: SHIP
Chief Scientist(s): BARRETT H. ERICKSON (POL)
Project: RP-2-OC-73 NAZCA PLATE STUDY LEG 3
Funding: NSF/IDOE
Survey Departure Date (yyyymmdd): 19730405
Port of Departure: ANTOFAGASTA, CHILE
Survey Arrival Date (yyyymmdd): 19730508
Port of Arrival: VALPARAISO, CHILE
Navigation Instrumentation: MAGNAVOX 706 SATELLITE/PROTOTYPE AN/SRN9
Bathymetry Instrumentation: RAYTHEON(CESP)/(PTR-105)/SEE AD DOC 18
Additional Forms of Bathymetric Data: ANALOG/ MAGNETIC AND PAPER TAPE
Magnetics Instrumentation: VARIAN DIRECT READING MAGNETOMETER
Additional Forms of Magnetics Data: ANALOG/MAGNETIC AND PAPER TAPE
Gravity Instrumentation: ASKANIA GSS-2/ANSHUTZ/LACOSTE-ROMBERG
Additional Forms of Gravity Data: ANALOG/MAGNETIC AND PAPER TAPE
Seismic Instrumentation: SEE AD DOC 20-23
Topmost Latitude of Survey: -17
Bottommost Latitude: -33
Leftmost Longitude: -119
Rightmost Longitude: -070
General Digitizing Rate of Bathymetry: 68
General Digitizing Rate of Magnetics: 68
Magnetic Sensor Tow Distance: 229
General Digitizing Rate of Gravity: 71
Departure Base Station Gravity: 9789083
Departure Base Station Description: ANTO. WOOLARD AND ROSE #WH 1063
Arrival Base Station Gravity: 9796325
Arrival Base Station Description: VALPARAISO, CHILE ACIC #0301-1
Additional Documentation: EDO-240-H TRANSDUCERS/RAYTHEON PF-101 RECORDER (ONE SECOND FULL SCALE SWEEP), REFLECTION: 120 CUBIC INCH BOLT AIR GUN-1900C/RIX AIR COMPRESSOR-L98/TELEDYNE, AND AQUATRONICS HYDROPHONE STREAMERS/TELEDYNE AMPLIFIER-FILTER SYSTEM/HP, REFRACTION: 8875A AMPLIFIERS/KROHN-HITE 3700 BAND PASS FILTER, REFRACTION:SSQ-41 SONOBUOYS, *** GRAVITY ANOMALY SIGNS REPAIRED 870206, OTHER PARAMETERS UNCHANGED ***
Number of Data Records: 7271

Min/Max Data Record:
Date: 1973 04 05
Latitude: -32.97000
Longitude: -118.03160
Bathymetry, 2- Way Traveltime: 001298
Bathymetry, Corrected Depth: 97.0
Magnetics Total Field, 1st Sensor: 253730
Magnetics Residual Field: -08350
Free-Air Anomaly: -2435

Min/Max Data Record:
Date: 1973 05 08
Latitude: -17.87000
Longitude: -70.37330
Bathymetry, 2- Way Traveltime: 105493
Bathymetry, Corrected Depth: 8058.0
Magnetics Total Field, 1st Sensor: 371650
Magnetics Residual Field: +05420
Free-Air Anomaly: +0536