Survey Identifier: NBP98-1
Format Acronym: MGD77
Data Center File Number: 88010021
Parameters Surveyed Code: 50500
File Creation Date (yyyymmdd): 19980219
Source Institution: NATL.SCIENCE FOUNDATION/RICE UNIVERSITY
Country: USA
Platform Name: NATHANIEL B. PALMER
Platform Type Code: 1
Platform Type: SHIP
Chief Scientist(s): JOHN ANDERSON
Project: NATHANIEL B. PALMER CRUISE: NBP98-1
Funding: NSF
Survey Departure Date (yyyymmdd): 19980116
Port of Departure: MCMURDO ANTARCTICA
Survey Arrival Date (yyyymmdd): 19980219
Port of Arrival: MCMURDO ANTARTCTICA
Navigation Instrumentation: P-CODE GPS
Geodetic Datum/Position: SATELLITE
Bathymetry Instrumentation: BATHYSUB-BOTTOM3.5KHZCHIRP,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
Seismic Instrumentation: 2 GUNS SINGLE CHANNEL
Formats of Seismic Data: DIGITAL
Topmost Latitude of Survey: -70
Bottommost Latitude: -78
Leftmost Longitude: 165
Rightmost Longitude: -175
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: 982977
Departure Base Station Description: MCMURDO ANTARCTICA
Arrival Base Station Gravity: 982977
Arrival Base Station Description: MCMURDO ANTARCTICA
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: 47354
Min/Max Data Record:
Date: 1998 01 16
Latitude: -77.85581
Longitude: -179.99960
Bathymetry, Corrected Depth: 56.9
Observed Gravity: 9825532
Free-Air Anomaly: -1185
Min/Max Data Record:
Date: 1998 02 18
Latitude: -70.29238
Longitude: +179.99960
Bathymetry, Corrected Depth: 2400.4
Observed Gravity: 9829908
Free-Air Anomaly: +0546