Survey Identifier: EW9208
Format Acronym: MGD77
Data Center File Number: 01210042
Parameters Surveyed Code: 55513
File Creation Date (yyyymmdd): 19961104
Source Institution: LAMONT-DOHERTY EARTH OBSERVATORY (LDEO)
Country: USA
Platform Name: R/V MAURICE EWING
Platform Type Code: 1
Platform Type: SHIP
Chief Scientist(s): B.TUCHOLKE, M.KLEINROCK
Project: WESTERN NORTH ATLANTIC CRUSTAL STRUCTURE
Funding: USN N00014-90-J1621
Survey Departure Date (yyyymmdd): 19920714
Port of Departure: ST. THOMAS, U.S. VIRGIN ISLANDS
Survey Arrival Date (yyyymmdd): 19920818
Port of Arrival: BRIDGETOWN, BARBADOS
Navigation Instrumentation: MAGNAVOX MX-1107RS, T-SET & MX-4200 GPS
Geodetic Datum/Position: GPS/TRANSIT FIXES + SPEED/HEADING
Bathymetry Instrumentation: ATLAS HYDROSWEEP-DS MULTIBEAM SONAR
Additional Forms of Bathymetric Data: MR1 SIDESCAN SONAR (HAWAII)
Magnetics Instrumentation: VARIAN V-75 MAGNETOMETER
Gravity Instrumentation: BODENSEEWERKE KSS-30 GRAVIMETER
Additional Forms of Gravity Data: BELL BGM-3 GRAVIMETER
Seismic Instrumentation: DIGICON DMS-2000 MULTI-CHANNEL ARRAY
Topmost Latitude of Survey: +28
Bottommost Latitude: +13
Leftmost Longitude: -067
Rightmost Longitude: -044
General Digitizing Rate of Bathymetry: 010
Assumed Sound Velocity: 15000
Bathymetric Datum Code: 00
Interpolation Scheme: 1-MINUTE INTERVALS
General Digitizing Rate of Magnetics: 010
Reference Field Code: 88
Reference Field: IGRF-90
Method of Applying Residual Field: BILINEAR INTERPOLATION IN 1-DEGREE SQUARE
General Digitizing Rate of Gravity: 010
Theoretical Gravity Formula Code: 2
Theoretical Gravity Formula: INTERNATIONAL 30
Reference System Code: 2
Reference System: POTSDAM SYSTEM
Corrections Applied: DRIFT -.0053 MGAL/DAY, DC .8
Departure Base Station Gravity: 9786807
Departure Base Station Description: ACIC 0272-7
Arrival Base Station Gravity: 9782944
Arrival Base Station Description: ACIC 0865-4
Additional Documentation: TIME: KINEMETRICS GPS-DC, SPEED: FURUNO CI-30, HEADING: SPERRY MK-27, OTHER DATA: MR1, SCS; SCIENCE OFFICER: J.STENNETT;COMPUTER SYSTEMS: W.ROBINSON, DATA REDUCED BY LDEO MARINE OFFICE DATA REDUCTION GROUP, CONTACT LDEO MG&G ARCHIVIST WITH QUESTIONS/PROBLEMS: MGGDB@LDEO.COLUMBIA.EDU, ORIGINAL RECORDS ARCHIVED AT LDEO. NGDC HAS MULTIBEAM BATHYMETRIC DATA FOR, PART OF THIS CRUISE IN THE AREA 28N TO 22N, 52W TO 44W.
Number of Data Records: 50341
Min/Max Data Record:
Date: 1992 07 14
Latitude: +13.41423
Longitude: -66.12538
Bathymetry, 2- Way Traveltime: 003630
Bathymetry, Corrected Depth: 278.0
Magnetics Total Field, 1st Sensor: 368500
Magnetics Residual Field: -09830
Free-Air Anomaly: -3137
Min/Max Data Record:
Date: 1992 08 18
Latitude: +27.17599
Longitude: -44.53187
Bathymetry, 2- Way Traveltime: 108310
Bathymetry, Corrected Depth: 8321.0
Magnetics Total Field, 1st Sensor: 420810
Magnetics Residual Field: -00880
Free-Air Anomaly: +1329