Dataset

EMAG2: A 2–arc min resolution Earth Magnetic Anomaly Grid compiled from satellite, airborne, and marine magnetic measurements

The University of Sydney
Viewed: [[ro.stat.viewed]] Cited: [[ro.stat.cited]] Accessed: [[ro.stat.accessed]]
ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rfr_id=info%3Asid%2FANDS&rft_id=info:doi10.4227/11/5587A87A1CDA5&rft.title=EMAG2: A 2–arc min resolution Earth Magnetic Anomaly Grid compiled from satellite, airborne, and marine magnetic measurements&rft.identifier=http://dx.doi.org/10.4227/11/5587A87A1CDA5&rft.publisher=The University of Sydney&rft.description=This data collection is associated with the publication: Maus, S., Barckhausen, U., Berkenbosch, H., Bournas, N., Brozena, J., Childers, V., Dostaler, F., Fairhead, J. D., Finn, C., von Frese, R. R. B., Gaina, C., Golynsky, S., Kucks, R., Lühr, H., Milligan, P., Mogren, S., Müller, R. D., Olesen, O., Pilkington, M., Saltus, R., Schreckenberger, B., Thébault, E., & Caratori Tontini, F. (2009). EMAG2: A 2–arc min resolution Earth Magnetic Anomaly Grid compiled from satellite, airborne, and marine magnetic measurements. Geochemistry, Geophysics, Geosystems, 10(8). doi: 10.1029/2009GC002471Publication AbstractA global Earth Magnetic Anomaly Grid (EMAG2) has been compiled from satellite, ship, and airbornemagnetic measurements. EMAG2 is a significant update of our previous candidate grid for the World Digital Magnetic Anomaly Map. The resolution has been improved from 3 arc min to 2 arc min, and the altitude has been reduced from 5 km to 4 km above the geoid. Additional grid and track line data have been included, both over land and the oceans. Wherever available, the original shipborne and airborne data were used instead of precompiled oceanic magnetic grids. Interpolation between sparse track lines in the oceans was improved by directional gridding and extrapolation, based on an oceanic crustal age model. The longest wavelengths (>330 km) were replaced with the latest CHAMP satellite magnetic field model MF6. EMAG2 is available at http://geomag.org/models/EMAG2.Authors and InstitutionsStefan Maus - CIRES, University of Colorado at Boulder, USA; National Geophysical Data Center, NOAA, Boulder, Colorado, USA. ORCID: 0000-0002-9604-3878Udo Barckhausen - Federal Institute for Geosciences and Natural Resources, Hannover, GermanyHeidi Berkenbosch - GNS Science, Avalon, New ZealandNasreddine Bournas - Geotech Ltd., Aurora, Ontario, CanadaJohn Brozena - Marine Physics Branch, Naval Research Laboratory, Washington, D.C., USAVicki Childers - National Geodetic Survey, NOAA, Silver Spring, Maryland, USAF. Dostaler - Geological Survey of Canada, Ottawa, Ontario, CanadaJ. Derek Fairhead - GETECH, Leeds, UK; School of Earth and Environment, University of Leeds, UKCarol Finn - U.S. Geological Survey, Denver, Colorado, USA. ORCID: 0000-0002-6178-0405Ralph R. B. von Frese - School of Earth Sciences, Ohio State University, Columbus, Ohio, USACarmen Gaina - Geological Survey of Norway, Trondheim, NorwayAlexander Golynsky - All-Russian Research Institute for Geology and Mineral Resources of the World Ocean, Saint Petersburg, RussiaRobert Kucks - U.S. Geological Survey, Denver, Colorado, USAHermann Lühr - Helmholtz Centre Potsdam, German Research Centre for Geosciences, Potsdam, GermanyPeter Milligan - Geoscience Australia, Canberra, ACT, AustraliaSaad Morgen - College of Sciences, King Saud University, Riyadh, Saudi ArabiaR. Dietmar Müller - EarthByte Research Group, School of Geosciences, The University of Sydney, Australia. ORCID: 0000-0002-3334-5764Odleiv Olesen - Geological Survey of Norway, Trondheim, NorwayMark Pilkington - Geological Survey of Canada, Ottawa, Ontario, CanadaRichard Saltus - U.S. Geological Survey, Denver, Colorado, USABernd Schreckenberger - Federal Institute for Geosciences and Natural Resources, Hannover, GermanyErwan Thébault - Institut de Physique du Globe de Paris, Paris, FranceFabio Caratori Tontini - Istituto Nazionale di Geofisica e Vulcanologia, Fezzano, ItalyOverview of Resources ContainedThis collection contains gridded global magnetic data, compiled from satellite, marine, aeromagnetic and ground magnetic surveys. These data are available as .pdf and .jpg images and posters, as a Google Earth .kmz grid, as ASCII grids, as netCDF grids, and as georeferenced GeoTIFF images. The grids can also be visualised interactively online using the GPlates Web Portal.&rft.creator=Anonymous&rft.date=2015&rft.relation=http://doi.org/10.1029/2009GC002471&rft.coverage=Global&rft_rights=CC BY: Attribution 3.0 AU http://creativecommons.org/licenses/by/3.0/au&rft_subject=Magnetism&rft_subject=Geoid&rft_subject=Magnetic Field&rft_subject=Magnetic Field Model&rft_subject=Champ&rft_subject=Mf6&rft_subject=World Digital Magnetic Anomaly Map&rft_subject=Magnetic Anomalies&rft_subject=Emag2&rft_subject=Earth Magnetic Anomaly Grid&rft_subject=Global&rft_subject=2 Arc Minute&rft_subject=Satellite&rft_subject=Shipborne&rft_subject=Airborne&rft_subject=Magnetism and Palaeomagnetism&rft_subject=Earth Sciences&rft_subject=Geophysics&rft_subject=Marine Geoscience&rft_subject=Geology&rft_subject=Expanding Knowledge in the Earth Sciences&rft_subject=Expanding Knowledge&rft_subject=Expanding Knowledge&rft_subject=Pure Basic Research&rft.type=dataset&rft.language=English Go to Data Provider

Licence & Rights:

Other view details
Unknown

CC BY: Attribution 3.0 AU
http://creativecommons.org/licenses/by/3.0/au

Access:

Other view details

Open Access

Contact Information


University of Colorado

Full description

This data collection is associated with the publication: Maus, S., Barckhausen, U., Berkenbosch, H., Bournas, N., Brozena, J., Childers, V., Dostaler, F., Fairhead, J. D., Finn, C., von Frese, R. R. B., Gaina, C., Golynsky, S., Kucks, R., Lühr, H., Milligan, P., Mogren, S., Müller, R. D., Olesen, O., Pilkington, M., Saltus, R., Schreckenberger, B., Thébault, E., & Caratori Tontini, F. (2009). EMAG2: A 2–arc min resolution Earth Magnetic Anomaly Grid compiled from satellite, airborne, and marine magnetic measurements. Geochemistry, Geophysics, Geosystems, 10(8). doi: 10.1029/2009GC002471

Publication Abstract

A global Earth Magnetic Anomaly Grid (EMAG2) has been compiled from satellite, ship, and airbornemagnetic measurements. EMAG2 is a significant update of our previous candidate grid for the World Digital Magnetic Anomaly Map. The resolution has been improved from 3 arc min to 2 arc min, and the altitude has been reduced from 5 km to 4 km above the geoid. Additional grid and track line data have been included, both over land and the oceans. Wherever available, the original shipborne and airborne data were used instead of precompiled oceanic magnetic grids. Interpolation between sparse track lines in the oceans was improved by directional gridding and extrapolation, based on an oceanic crustal age model. The longest wavelengths (>330 km) were replaced with the latest CHAMP satellite magnetic field model MF6. EMAG2 is available at http://geomag.org/models/EMAG2.

Authors and Institutions

Stefan Maus - CIRES, University of Colorado at Boulder, USA; National Geophysical Data Center, NOAA, Boulder, Colorado, USA. ORCID: 0000-0002-9604-3878

Udo Barckhausen - Federal Institute for Geosciences and Natural Resources, Hannover, Germany

Heidi Berkenbosch - GNS Science, Avalon, New Zealand

Nasreddine Bournas - Geotech Ltd., Aurora, Ontario, Canada

John Brozena - Marine Physics Branch, Naval Research Laboratory, Washington, D.C., USA

Vicki Childers - National Geodetic Survey, NOAA, Silver Spring, Maryland, USA

F. Dostaler - Geological Survey of Canada, Ottawa, Ontario, Canada

J. Derek Fairhead - GETECH, Leeds, UK; School of Earth and Environment, University of Leeds, UK

Carol Finn - U.S. Geological Survey, Denver, Colorado, USA. ORCID: 0000-0002-6178-0405

Ralph R. B. von Frese - School of Earth Sciences, Ohio State University, Columbus, Ohio, USA

Carmen Gaina - Geological Survey of Norway, Trondheim, Norway

Alexander Golynsky - All-Russian Research Institute for Geology and Mineral Resources of the World Ocean, Saint Petersburg, Russia

Robert Kucks - U.S. Geological Survey, Denver, Colorado, USA

Hermann Lühr - Helmholtz Centre Potsdam, German Research Centre for Geosciences, Potsdam, Germany

Peter Milligan - Geoscience Australia, Canberra, ACT, Australia

Saad Morgen - College of Sciences, King Saud University, Riyadh, Saudi Arabia

R. Dietmar Müller - EarthByte Research Group, School of Geosciences, The University of Sydney, Australia. ORCID: 0000-0002-3334-5764

Odleiv Olesen - Geological Survey of Norway, Trondheim, Norway

Mark Pilkington - Geological Survey of Canada, Ottawa, Ontario, Canada

Richard Saltus - U.S. Geological Survey, Denver, Colorado, USA

Bernd Schreckenberger - Federal Institute for Geosciences and Natural Resources, Hannover, Germany

Erwan Thébault - Institut de Physique du Globe de Paris, Paris, France

Fabio Caratori Tontini - Istituto Nazionale di Geofisica e Vulcanologia, Fezzano, Italy

Overview of Resources Contained

This collection contains gridded global magnetic data, compiled from satellite, marine, aeromagnetic and ground magnetic surveys. These data are available as .pdf and .jpg images and posters, as a Google Earth .kmz grid, as ASCII grids, as netCDF grids, and as georeferenced GeoTIFF images. The grids can also be visualised interactively online using the GPlates Web Portal.

Data time period: Present day

Spatial Coverage And Location

text: Global