Survey Identifier: NBP96-4A

Format Acronym: MGD77
Data Center File Number: 88010028
Parameters Surveyed Code: 50500
File Creation Date (yyyymmdd): 19961108
Source Institution: UNIVERSITY OF TENNESSEE
Country: USA
Platform Name: NATHANIEL B. PALMER
Platform Type Code: 1
Platform Type: SHIP
Chief Scientist(s): WALKER SMITH
Project: NATHANIEL B. PALMER CRUISE: NBP96-4A
Funding: NSF
Survey Departure Date (yyyymmdd): 19961002
Port of Departure: LYTTELTON NEW ZEALAND
Survey Arrival Date (yyyymmdd): 19961108
Port of Arrival: ICE EDGE
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: -43
Bottommost Latitude: -79
Leftmost Longitude: 168
Rightmost Longitude: -169
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
Additional Documentation: DATA PROCESSED BY ANTARCTIC SUPPORT ASSOCIATES/RAYTHEON POLAR SERVICES. NGDC COMMENTS: NGDC DELETED BAD VALUES FOR OBSERVED GRAVITY IN DATETIME PERIOD, 199610210031 TO 199610212345, BUT THIS MAY BE AN INDICATION OF OTHER PROBLEMS, WITH THE REMAINING GRAVITY DATA. NGDC ALSO DELETED SECTIONS OF BATHYMETRY WITH, NEGATIVE DEPTHS AND OTHER SURROUNDING POINTS. THERE APPEAR TO BE OTHER DATA, WHICH MAY BE SPURIOUS AND ARTIFACT-LADEN.
Number of Data Records: 52317

Min/Max Data Record:
Date: 1996 09 29
Latitude: -78.05333
Longitude: -179.99990
Bathymetry, Corrected Depth: 0.2
Observed Gravity: 9805025
Free-Air Anomaly: -4360

Min/Max Data Record:
Date: 1996 11 05
Latitude: -43.56460
Longitude: +179.99980
Bathymetry, Corrected Depth: 5590.0
Observed Gravity: 9829306
Free-Air Anomaly: +1227