Magnetic anomaly map of North America | U.S. Geological Survey - USGS.gov
WEBJan 1, 2002 — The North American magnetic anomaly map derived from the digital database provides a comprehensive magnetic view of continental-scale trends not available in individual data sets, helps link widely separated areas of outcrop, and unifies disparate geologic studies.
Earth Magnetic Anomaly Grid (EMAG) 2 | National Centers for ...
WEBJul 19, 2024 — These maps increase knowledge of subsurface structure and composition of the Earth's crust. Global magnetic anomaly grids are used for resource exploration, navigation where GPS is unavailable (submarine, directional drilling, etc.), and studying the evolution of the lithosphere.
Digital data grids for the magnetic anomaly map of North America
WEBDec 1, 2002 — The North American magnetic anomaly map derived from the digital database provides a comprehensive magnetic view of continental-scale trends not available in individual data sets, helps link widely separated areas of outcrop, and unifies disparate geologic studies.
Magnetic anomaly - Wikipedia
WEBIn geophysics, a magnetic anomaly is a local variation in the Earth's magnetic field resulting from variations in the chemistry or magnetism of the rocks. Mapping of variation over an area is valuable in detecting structures obscured by overlying material.
World Digital Magnetic Anomaly Map - Geomag
WEBAug 20, 2010 — The WDMAM is specified as a global 3-arc-minute resolution grid of the anomaly of the magnetic intensity at an altitude of 5 km above mean sea level. It was compiled from satellite, marine, aeromagnetic and ground magnetic surveys (see our acknowledgement of data providers and collaborators).
Magnetic anomaly map of North America - USGS Publications …
WEBThe North American magnetic anomaly map derived from the digital database provides a comprehensive magnetic view of continental-scale trends not available in individual data sets, helps link widely separated areas of outcrop, and unifies disparate geologic studies.
NASA SVS | South Atlantic Anomaly: 2015 through 2025
WEBAug 17, 2020 — South Atlantic Anomaly from 2015 through 2025 showing the geomagnetic intensity at the Earth's surface and the core-mantle boundary. There are versions that include the dates and colorbars and versions without the date and colorbat.
Earth Magnetic Anomaly Grid - Geomag
WEBJul 6, 2015 — Magnetic anomaly maps provide insight into the subsurface structure and composition of the Earth's crust. Anomalies trending parallel to the isochrons (lines of equal age) in the oceans reveal the temporal evolution of oceanic crust.
Wdmam
WEBThe WDMAM (World Digital Magnetic Anomaly Map) is an international scientific project under the auspices of IAGA (International Association of Geomagnetism and Aeronomy) and CGMW (Commission for the Geological Map of the World), aiming to compile and make available magnetic anomalies caused by the Earth lithosphere, on continental and oceanic ...
Geomagnetic Field Models at NGDC | NCEI - National Oceanic …
WEBNGDC hosts online calculators to compute the geomagnetic field at any location on the Earth. The geomagnetic models behind these calculators are regularly updated to maintain their accuracy.
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