Survey Identifier: BOMEXDI
Format Acronym: MGD77
Data Center File Number: 03030006
Parameters Surveyed Code: 55511
File Creation Date (yyyymmdd): 19800211
Source Institution: NOAA/ESSA
Country: UNITED STATES
Platform Name: DISCOVERER
Platform Type Code: 1
Platform Type: SHIP
Chief Scientist(s): BUSH, SAM
Project: DEEP SEA TRACKLINE OPR-425, BOMEX
Survey Departure Date (yyyymmdd): 19690505
Port of Departure: BRIDGETOWN,USA
Survey Arrival Date (yyyymmdd): 19690729
Navigation Instrumentation: CELESTIAL
Bathymetry Instrumentation: NARROW BEAM ECHO SOUNDER
Magnetics Instrumentation: PROTON PRECESSION MAGNETOMETER
Gravity Instrumentation: GRAF ASKANIA #23
Topmost Latitude of Survey: +14
Bottommost Latitude: +12
Leftmost Longitude: -060
Rightmost Longitude: -054
General Digitizing Rate of Bathymetry: 484
Assumed Sound Velocity: 14630
Magnetic Sensor Tow Distance: 0183
Reference Field Code: 88
Reference Field: SEE ADD DOC
Corrections Applied: DRIFT: .034 MGAL/DAY
Departure Base Station Gravity: 9782997
Departure Base Station Description: SEWALL,BARBADOS AIRPORT
Additional Documentation: MAG, REF. FIELD: CAIN, HENDRICKS, LANGEL, HUDSON. JOURNAL OF, GEOMAGNETISM AND GEOELECTRICITY. VOL 19, P. 335, WARNING: MGD77 DATA RECORDS FOR THIS CRUISE MAY CONTAIN NEGATIVE GRAVITY, ANOMALY VALUES THAT SHOULD BE POSITIVE.
Number of Data Records: 2703
Min/Max Data Record:
Date: 1969 05 05
Latitude: +12.83000
Longitude: -59.63170
Bathymetry, 2- Way Traveltime: 006975
Bathymetry, Corrected Depth: 526.0
Magnetics Total Field, 1st Sensor: 371520
Magnetics Residual Field: -01180
Free-Air Anomaly: -1220
Min/Max Data Record:
Date: 1969 07 29
Latitude: +13.93150
Longitude: -54.00000
Bathymetry, 2- Way Traveltime: 070950
Bathymetry, Corrected Depth: 5368.0
Magnetics Total Field, 1st Sensor: 387020
Magnetics Residual Field: +02370
Free-Air Anomaly: +0000