Survey Identifier: 78-J-3
Format Acronym: MGD77
Data Center File Number: 23060003
Parameters Surveyed Code: 51131
File Creation Date (yyyymmdd): 19800130
Source Institution: TEXAS A+M UNIVERSITY
Country: USA
Platform Name: JOIDES RESOLUTION
Platform Type Code: 1
Platform Type: SHIP
Chief Scientist(s): REZAK
Project: TAMRF-BLM CONTRACT 11551-CT8-35,MAPPING CRUISE,LEG 3
Funding: DOI-BLM
Survey Departure Date (yyyymmdd): 19780917
Port of Departure: CAMERON,LA
Survey Arrival Date (yyyymmdd): 19781004
Port of Arrival: FREEPORT, TEXAS
Navigation Instrumentation: LORAC HYPERBOLIC NETWORK
Geodetic Datum/Position: LORAN HYPERBOLIC NETWORK
Bathymetry Instrumentation: RAYTHEON DE719B/208KHZ/8 DEG.B.W.
Additional Forms of Bathymetric Data: 3.5KHZ HI RES PROFILER, 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: +29
Bottommost Latitude: +27
Leftmost Longitude: -094
Rightmost Longitude: -090
General Digitizing Rate of Bathymetry: 38
General Sampling Rate of Bathymetry: 534/MINUTE
Interpolation Scheme: 500FT SHOT SPACING,VARIABLE SOUND VEL.SEE BELOW
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 = TO PRODUCE TRUE (CORRECTED) BATHYMETRY.VELOCITY, ASSUMPTION ADJUSTED BY BAR CHECK - LOWERING ACOUSTIC REFLECTOR TO KNOWN, DEPTH AND ADJUSTING RECORDER SWEEP SPEED.ENGLISH-METRIC CONVERSION 39.37, INCHES EQUALES 1 METER EXACTLY,PRIMARY RECORDING IN FEET, NAV SUSPECT FOR LARGE SECTIONS OF CRUISE
Number of Data Records: 7595
Min/Max Data Record:
Date: 1978 09 20
Latitude: +27.77191
Longitude: -93.95127
Bathymetry, Corrected Depth: 47.2
Seismic Line Number: 00000
Seismic Shot-Point Number: 000991
Min/Max Data Record:
Date: 1978 10 04
Latitude: +29.24397
Longitude: -90.67065
Bathymetry, Corrected Depth: 230.7
Seismic Line Number: 01030
Seismic Shot-Point Number: 090991