Survey Identifier: 79-P-1
Format Acronym: MGD77
Data Center File Number: 23070001
Parameters Surveyed Code: 51131
File Creation Date (yyyymmdd): 19800130
Source Institution: TEXAS A+M UNIVERSITY
Country: USA
Platform Name: PROTON
Platform Type Code: 1
Platform Type: SHIP
Chief Scientist(s): REZAK
Project: TAMRF-BLM CONTRACT AA551-CT8-35,2ED MAPPING CRUISE,LEG1
Funding: DOI-BLM
Survey Departure Date (yyyymmdd): 19790730
Port of Departure: PASADENA,TEXAS
Survey Arrival Date (yyyymmdd): 19790803
Port of Arrival: PASADENA,TEXAS
Navigation Instrumentation: LORAC HYPERBOLIC NETWORK
Geodetic Datum/Position: LORAN HYPERBOLIC NETWORK
Bathymetry Instrumentation: 3.5 SBP
Additional Forms of Bathymetric Data: MICROFILM
Magnetics Instrumentation: NONE
Gravity Instrumentation: NONE
Seismic Instrumentation: UNIBOOM/1000 JOULES 500-1200HZ SBP3.5KHZ
Formats of Seismic Data: MICROFILM
Topmost Latitude of Survey: +28
Bottommost Latitude: +27
Leftmost Longitude: -094
Rightmost Longitude: -093
General Digitizing Rate of Bathymetry: 18
General Sampling Rate of Bathymetry: 240/MINUTE
Assumed Sound Velocity: 1524
Interpolation Scheme: 500 FT SHOT PT SPACING
Additional Documentation: BATHYMETRICDATA SAMPLED AT 1/4 AND 1/8 SEC.SWEEP,DIGT AT 500 FT, SPACING DEFINED BY LORAC SERVICE CORP. NAVIGATION SYSTEM.SOUND VELOCITY, ASSUMPTION = 5000 FT/SEC.DRAFT CORRECTION ADDED FOR SOUNDINGS TO AGREE, WITH LEAD LINED DEPTH. THE SEAFLOOR MAPPING SYSTEM WAS USED TO PRODUCE 100%, SIDESCAN COVERAGEOF AREA.ENGLISH METRIC CONVERSION 39.37 IN=1 METER EXACTLY, PRIMARY RECORDINGS IN FEET, NAV SUSPECT ON LARGE SECTIONS OF CRUISE - NGDC.
Number of Data Records: 3189
Min/Max Data Record:
Date: 1979 07 30
Latitude: +27.79568
Longitude: -93.90520
Bathymetry, Corrected Depth: 22.6
Seismic Line Number: 00010
Seismic Shot-Point Number: 000991
Min/Max Data Record:
Date: 1979 08 03
Latitude: +27.93253
Longitude: -93.76353
Bathymetry, Corrected Depth: 187.5
Seismic Line Number: 01020
Seismic Shot-Point Number: 097991