Survey Identifier: NBP99-4
Format Acronym: MGD77
Data Center File Number: 88010026
Parameters Surveyed Code: 55500
File Creation Date (yyyymmdd): 19990510
Source Institution: OREGON STATE UNIVERSITY
Country: USA
Platform Name: NATHANIEL B. PALMER
Platform Type Code: 1
Platform Type: SHIP
Chief Scientist(s): GARY KLINKHAMMER
Project: NATHANIEL B. PALMER CRUISE: NBP99-4
Funding: NSF
Survey Departure Date (yyyymmdd): 19990415
Port of Departure: PUNTA ARENAS CHILE
Survey Arrival Date (yyyymmdd): 19990510
Port of Arrival: PUNTA ARENAS CHILE
Navigation Instrumentation: P-CODE GPS
Geodetic Datum/Position: SATELLITE
Bathymetry Instrumentation: BATHY SUBBOTTOM3.5KHZCHIRP SEABEAM 12KHZ
Additional Forms of Bathymetric Data: NONE
Magnetics Instrumentation: PROTON MAG
Additional Forms of Magnetics Data: NONE
Gravity Instrumentation: LACOSTE & ROMBERG MARINE GRAVIMETER S-36
Additional Forms of Gravity Data: NONE
Formats of Seismic Data: DIGITAL
Topmost Latitude of Survey: -52
Bottommost Latitude: -63
Leftmost Longitude: -071
Rightmost Longitude: -054
General Digitizing Rate of Bathymetry: 010
General Sampling Rate of Bathymetry: 1/MINUTE
Assumed Sound Velocity: 1500
Bathymetric Datum Code: 00
Interpolation Scheme: 1-MIN INTERVAL
General Digitizing Rate of Magnetics: 1.0
General Sampling Rate of Magnetics: 60
Magnetic Sensor Tow Distance: 150M
Reference Field Code: 88
Reference Field: IGRF95
General Digitizing Rate of Gravity: 1.0
General Sampling Rate of Gravity: 60
Theoretical Gravity Formula Code: 3
Theoretical Gravity Formula: IAG SYSTEM 1967
Departure Base Station Gravity: 981320
Departure Base Station Description: PUNTA ARENAS CHILE
Arrival Base Station Gravity: 981320
Arrival Base Station Description: PUNTA ARENAS CHILE
Additional Documentation: DATA PROCESSED BY ANTARCTIC SUPPORT ASSOCIATES/RAYTHEON POLAR SERVICES. SEABEAM 2112 CENTER BEAM USED FOR BATHYMETRY. BATHYMETRY DATA CORRECTED USING, XBT PROBE AND LEVITUS DATA OR CTD CAST DATA.
Number of Data Records: 31069
Min/Max Data Record:
Date: 1999 04 16
Latitude: -62.82471
Longitude: -70.90664
Bathymetry, Corrected Depth: 12.9
Magnetics Total Field, 1st Sensor: 344289
Magnetics Residual Field: +01092
Observed Gravity: 9812571
Free-Air Anomaly: -0843
Min/Max Data Record:
Date: 1999 05 08
Latitude: -52.35256
Longitude: -54.05340
Bathymetry, Corrected Depth: 5135.9
Magnetics Total Field, 1st Sensor: 371058
Magnetics Residual Field: +07925
Observed Gravity: 9821965
Free-Air Anomaly: +1043