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Global Change Master Directory (GCMD)
Nathaniel B. Palmer 0102 - underway geophysical data
Entry ID: NBP0102_geophysics


Summary
Abstract: This data set contains underway geophysical data collected on a transit cruise
between Cape Town, South Africa, and Punta Arenas, Chile, during April 2001.
We collected gravity data using a shipboard Lacoste-Romberg gravimeter,
magnetic field data using a proton precession magnetometer towed behind the
ship, and centerbeam depth (bathymetry beneath the ship). IGRF2000, calculated
for the appropriate date and location, was subtracted from the observed
magnetic field to yield the total field magnetic anomaly.

The major scientific objectives of the cruise were:
a) survey a flowline between the South America and Africa plates just north of
the Falkland-Agulhas fracture zone, including across the modern spreading axis,
to obtain the magnetic anomaly sequence of the Cretaceous-Cenozoic mixed
polarity superchron
b) survey a small section of the Agulhas FZ with single-channel seismic data
c) survey the northern edge of the Falkland Plateau with swath bathymetry
d) collect ADCP data along the track

A related data sets that cannot currently be archived at NGDC is single-channel
seismic data, which is available from the chief scientist. We expect to
archive these files with the University of Texas at Austin in the near future.
The SeaBeam data are available in hourly files in raw and edited formats
suitable for use with the MB-system software, and cover nearly the entire
cruise. These are available from LDEO Antarctic multibeam data management
center. The seismic data consist of 24 hours of single-channel seismic
reflection profiling across part of the Agulhas fracture zone at 4 deg. W
longitude.

Geographic Coverage
 N: -33.871 S: -49.6658  E: 18.269  W: -57.5622

 Min Altitude: -0 METER  Max Altitude: -0 METER  Min Depth: -96 METER  Max Depth: -5739 METER

Data Set Citation
Version: Not provided


Temporal Coverage
Start Date: 2001-04-01
Stop Date: 2001-04-15


Paleo_Temporal_Coverage
Paleo Start Date: 196 Ma
Paleo Stop Date: 0 Ma
Chrono Unit:
Chrono Unit:
Chrono Unit:


Location Keywords
OCEAN > ATLANTIC OCEAN
OCEAN > ATLANTIC OCEAN > SOUTH ATLANTIC OCEAN
OCEAN > ATLANTIC OCEAN > SOUTH ATLANTIC OCEAN > FALKLAND PLATEAU
OCEAN > ATLANTIC OCEAN > SOUTH ATLANTIC OCEAN > MID-ATLANTIC RIDGE
OCEAN > ATLANTIC OCEAN > SOUTH ATLANTIC OCEAN > FALKLAND-AGULHAS FRACTURE ZONE


Data Resolution
Temporal Resolution: 1 minute


Science Keywords
OCEANS >BATHYMETRY/SEAFLOOR TOPOGRAPHY >SEAFLOOR TOPOGRAPHY    [Definition]
OCEANS >BATHYMETRY/SEAFLOOR TOPOGRAPHY    [Definition]
OCEANS >BATHYMETRY/SEAFLOOR TOPOGRAPHY >FRACTURE ZONES    [Definition]
OCEANS >MARINE GEOPHYSICS >MAGNETIC ANOMALIES    [Definition]
OCEANS >MARINE GEOPHYSICS >MARINE MAGNETICS    [Definition]
OCEANS >BATHYMETRY/SEAFLOOR TOPOGRAPHY >OCEAN PLATEAUS/RIDGES    [Definition]
SOLID EARTH >GRAVITY/GRAVITATIONAL FIELD >GRAVITATIONAL FIELD    [Definition]
SOLID EARTH >GEOMAGNETISM >MAGNETIC FIELD >MAGNETIC ANOMALIES    [Definition]
SOLID EARTH >GEOMAGNETISM >MAGNETIC FIELD >MAGNETIC INTENSITY    [Definition]
SOLID EARTH >TECTONICS >EARTHQUAKES >SEISMIC PROFILE    [Definition]
OCEANS >MARINE VOLCANISM >MID-OCEAN RIDGES    [Definition]
OCEANS >BATHYMETRY/SEAFLOOR TOPOGRAPHY >BATHYMETRY    [Definition]


Platform
SHIPS    [Information]
R/V NBP >R/V Nathaniel B. Palmer    [Information]


Instrument
GRAVIMETERS    [Information]
MAGNETOMETERS    [Information]
PROTON MAGNETOMETER    [Information]
SEISMIC REFLECTION PROFILERS    [Information]
ADCP >Acoustic Doppler Current Profiler    [Information]
MSBS >Multibeam Swath Bathymetry System    [Information]


Project
ESIP >Earth Science Information Partners Program    [Information]


Keywords
bathymetry
SeaBeam
SeaBeam2112
South Atlantic
gravity
Nathaniel B. Palmer
magnetic anomalies
swath bathymetry
single-channel seismic reflection
Falkland Plateau
Falkland-Agulhas fracture zone
southern Mid-Atlantic Ridge
ADCP


Data Set Progress
COMPLETE


Data Center
Joint Archive for Shipboard Acoustic Doppler Current Profiler Center, Oceanography Dept., School of Ocean and Earth Science and Technology, University of Hawaii    [Information]
Data Center URL: http://ilikai.soest.hawaii.edu/sadcp/

Data Center Personnel
Name: PATRICK C CALDWELL
Phone: 808-956-4105
Fax: 808-956-2352
Email: caldwell at hawaii.edu, patrick.caldwell at noaa.gov
Contact Address:
NOAA/NESDIS/NODC/NCDDC
Liaison for Hawaii and US-Flag Islands in the Pacific
Department of Oceanography
School of Ocean and Earth Science and Technology
University of Hawaii at Manoa
1000 Pope Road, MSB 316
City: Honolulu
Province or State: HI
Postal Code: 96822
Country: USA

Marine Geoscience Data System, Lamont-Doherty Earth Observatory, Columbia University    [Information]
Data Center URL: http://www.marine-geo.org/

Data Center Personnel
Name: SUZANNE O'HARA
Phone: (845) 818-3745
Fax: (845) 818-3745
Email: sohara at ldeo.columbia.edu
Email: info at marine-geo.org
Contact Address:
Lamont-Doherty Earth Observatory
P.O. Box 1000
61 Route 9W
Columbia University
City: Palisades
Province or State: NEW YORK
Postal Code: 10964-1000
Country: USA


Personnel
JOANN MIRIAM STOCK
Role: METADATA AUTHOR
Phone: (626)395-6938
Fax: (626)564-0715
Email: jstock at gps.caltech.edu
Contact Address:
Caltech 252-21
1200 E. California Blvd.
City: PASADENA
Province or State: CA
Postal Code: 91125
Country: USA


JOANN MIRIAM STOCK
Role: INVESTIGATOR
Phone: (626)395-6938
Fax: (626)564-0715
Email: jstock at gps.caltech.edu
Contact Address:
Caltech 252-21
1200 E. California Blvd.
City: PASADENA
Province or State: CA
Postal Code: 91125
Country: USA


ROBERT CLAYTON
Role: INVESTIGATOR
Phone: (626)395-6909
Fax: (626)564-0715
Email: clay at gps.caltech.edu
Contact Address:
Caltech 252-21
1200 E. California Blvd.
City: Pasadena
Province or State: CA
Postal Code: 91125
Country: USA


Extended Metadata Properties
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Creation and Review Dates
DIF Creation Date: 1970-01-01
Last DIF Revision Date: 2018-11-01



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