Survey Identifier: NBP98-5
Format Acronym: MGD77
Data Center File Number: 88010035
Parameters Surveyed Code: 50500
File Creation Date (yyyymmdd): 19980819
Source Institution: NATIONAL SCIENCE FOUNDATION
Country: USA
Platform Name: NATHANIEL B. PALMER
Platform Type Code: 1
Platform Type: SHIP
Chief Scientist(s): NONE
Project: NATHANIEL B. PALMER CRUISE: NBP98-5
Funding: NSF
Survey Departure Date (yyyymmdd): 19980725
Port of Departure: PUNTA ARENAS CHILE
Survey Arrival Date (yyyymmdd): 19980819
Port of Arrival: SEATTLE WASHINGTON
Navigation Instrumentation: P-CODE GPS
Geodetic Datum/Position: SATELLITE
Bathymetry Instrumentation: ODEC BATHY 2000 SUB-BOTTOM 3.5 KHZ CHIRP
Additional Forms of Bathymetric Data: NONE
Magnetics Instrumentation: NONE
Additional Forms of Magnetics Data: NONE
Gravity Instrumentation: LACOSTE & ROMBERG MARINE GRAVIMETER S-36
Additional Forms of Gravity Data: NONE
Seismic Instrumentation: NONE
Topmost Latitude of Survey: -45
Bottommost Latitude: -54
Leftmost Longitude: -076
Rightmost Longitude: -070
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 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
Additional Documentation: DATA PROCESSED BY ANTARCTIC SUPPORT ASSOCIATES/RAYTHEON POLAR SERVICES. TRANSIT, No gravity tie taken in Seattle. Closest tie date is 10/1/98 at Honolulu, Reading: 978927, NGDC COMMENTS: NGDC DELETED SOME OBVIOUS ERRORS IN THE BATHYMETRY, WHICH MAY, BE AN INDICATION OF OTHER UNDETECTED ERRORS IN THE REMAINING BATHYMETRY.
Number of Data Records: 5756
Min/Max Data Record:
Date: 1998 07 22
Latitude: -53.91337
Longitude: -75.76140
Bathymetry, Corrected Depth: 14.8
Observed Gravity: 9806734
Free-Air Anomaly: -0783
Min/Max Data Record:
Date: 1998 07 25
Latitude: -45.73924
Longitude: -70.81311
Bathymetry, Corrected Depth: 2592.6
Observed Gravity: 9814069
Free-Air Anomaly: +0735