Survey Identifier: L576BS
Format Acronym: MGD77
Data Center File Number: 06050008
Parameters Surveyed Code: 55505
File Creation Date (yyyymmdd): 19870415
Source Institution: USGS Branch of Pacific Marine Geology
Country: United States
Platform Name: Lee
Platform Type Code: 1
Platform Type: SHIP
Chief Scientist(s): MIKE MARLOW, ALAN COOPER
Project: SOUTHERN BERING SEA SHELF OFR80-389
Survey Departure Date (yyyymmdd): 19760728
Port of Departure: KODIAK, AK
Survey Arrival Date (yyyymmdd): 19760825
Port of Arrival: NOME, AK
Navigation Instrumentation: INTEGRATED AT,LORAN-C,DOPPLER SONAR
Geodetic Datum/Position: PRIMARY-SAT
Magnetics Instrumentation: PROTON PRECESSION MAG-GEOMETRICS G-801
Additional Forms of Magnetics Data: ANALOG RECORDS
Gravity Instrumentation: LA COSTE ROMBERG SEA GRAVIMETER
Additional Forms of Gravity Data: ANALOG RECORDS
Seismic Instrumentation: 5 AIR GUNS, 24 CHANNEL STREAMER
Formats of Seismic Data: SEE ADD DOC.
Topmost Latitude of Survey: +65
Bottommost Latitude: +53
Leftmost Longitude: +176
Rightmost Longitude: -152
General Digitizing Rate of Bathymetry: 131
General Digitizing Rate of Magnetics: 010
General Sampling Rate of Magnetics: 04
Magnetic Sensor Tow Distance: 0213
Reference Field Code: 04
Reference Field: IGRF-75
Method of Applying Residual Field: LINEAR INTERP. BETWEEN NAV FIXES
General Digitizing Rate of Gravity: 010
General Sampling Rate of Gravity: 20
Theoretical Gravity Formula Code: 2
Theoretical Gravity Formula: INTERNAT.IAG1967
Reference System Code: 3
Reference System: SYSTEM IGSN-71
Additional Documentation: STACKED SECTIONS-BLACKLINE OR SEPIA OR MICROFILM. TECHNICAL PAPER, SHOT-PT MAP-BLACKLINE OR SEPIA. DIGITAL SHOT-PTS.
Number of Data Records: 5017
Min/Max Data Record:
Date: 1976 07 28
Latitude: +53.36707
Longitude: -179.99542
Bathymetry, 2- Way Traveltime: 000130
Bathymetry, Corrected Depth: 10.0
Magnetics Total Field, 1st Sensor: 491220
Magnetics Total Field, 2nd Sensor: 491160
Magnetics Residual Field: -09664
Observed Gravity: 9813692
Free-Air Anomaly: -0935
Seismic Line Number: 001
Seismic Shot-Point Number: 0
Min/Max Data Record:
Date: 1976 08 25
Latitude: +64.48352
Longitude: +179.99431
Bathymetry, 2- Way Traveltime: 052440
Bathymetry, Corrected Depth: 3909.0
Magnetics Total Field, 1st Sensor: 550320
Magnetics Total Field, 2nd Sensor: 547540
Magnetics Residual Field: +14698
Observed Gravity: 9821113
Free-Air Anomaly: +1765
Seismic Line Number: 49
Seismic Shot-Point Number: 9958