Survey Identifier: ANTIV4

Format Acronym: MGD77
Data Center File Number: 83070003
Parameters Surveyed Code: 51131
File Creation Date (yyyymmdd): 19920319
Source Institution: Alfred Wegener Inst Polar+MarineRes.AWI
Country: Fed. Rep. Germany
Platform Name: RV Polarstern
Platform Type Code: 1
Platform Type: SHIP
Chief Scientist(s): Fuetterer, D.K.
Project: Polarstern ANT IV/4
Survey Departure Date (yyyymmdd): 19860318
Port of Departure: Capetown, RSA
Survey Arrival Date (yyyymmdd): 19860429
Port of Arrival: Punta Arenas, CH
Navigation Instrumentation: INDAS: Satnav (GPS+NNSS), Log+Gyro
Geodetic Datum/Position: Satfix GPS, dead reckoning, interpol.
Bathymetry Instrumentation: ELAC NBS, roll/pitch compensated
Additional Forms of Bathymetric Data: analogue and digital
Topmost Latitude of Survey: -34
Bottommost Latitude: -68
Leftmost Longitude: -067
Rightmost Longitude: +019
General Digitizing Rate of Bathymetry: 003
General Sampling Rate of Bathymetry: 1/second
Assumed Sound Velocity: 15000
Bathymetric Datum Code: 00
Interpolation Scheme: no interpolation
Additional Documentation: Suspected depth data have been verified by 3.5 kHz sediment echo sounder and, analog recordings of HONEYWELL-ELAC Narrow Beam Sounders, Navigation: linear interpolated between GPS or NNSS fixes, suspected positions, have been deleted, NBS plus SEABEAM fan sonar survey. Geophysical measurements are excluded. For, details see expedition report Ber.z.Polarforschung, Vol.33, AWI, 1987.
Number of Data Records: 147544

Min/Max Data Record:
Date: 1986 03 18
Latitude: -67.05354
Longitude: -66.34165
Bathymetry, 2- Way Traveltime: 000853
Bathymetry, Corrected Depth: 64.0

Min/Max Data Record:
Date: 1986 04 28
Latitude: -34.19482
Longitude: +18.14206
Bathymetry, 2- Way Traveltime: 077120
Bathymetry, Corrected Depth: 5769.0