Results 61 to 70 of about 8,285 (233)

Aeromagnetic survey in Minnesota

open access: yesEos, Transactions American Geophysical Union, 1982
The Minnesota Geological Survey is acquiring over 75,000 line km of aeromagnetic data over east central Minnesota as a continuation of a long‐range program to map the entire state. The survey is being flown at a mean ground clearance of 150 m with a 400‐m line spacing.
openaire   +1 more source

Geochemical Analysis of Diachronous V‐Shaped Ridges and Troughs That Flank the Reykjanes Ridge South of Iceland

open access: yesGeochemistry, Geophysics, Geosystems, Volume 27, Issue 3, March 2026.
Abstract It is recognized that mantle plumes play a direct role in generating regional uplift and producing immense volumes of basaltic magmatism, both of which can influence paleoclimate. The Icelandic Plume, beneath the North Atlantic Ocean, is of particular importance due to its size and position at a significant paleoceanographic gateway.
Nicky White   +5 more
wiley   +1 more source

Evaluation of Aliasing in Aeromagnetic Surveys ‐ Update to Reid 1980 Analysis

open access: yesEarth and Space Science, Volume 13, Issue 2, February 2026.
Abstract Regularly spaced magnetic anomaly surveys, consisting of parallel traverse lines and perpendicular (more widely spaced) tie lines, are routinely collected for multiple applications including geologic studies and, more recently, as reference for alternative magnetic navigation.
R. W. Saltus, A. Chulliat, R. J. Blakely
wiley   +1 more source

Localization of magnetic sources underground by a data adaptive tomographic scanner

open access: yes, 2005
A tomography method is proposed to image magnetic anomaly sources buried below a non-flat ground surface, by developing the expression of the total power associated with a measured magnetic field.
Mauriello, Paolo, Patella, Domenico
core   +1 more source

Late‐Stage Rift Evolution at Back Arc Basins: Insights From a Tomography Experiment at Orca Volcano, Bransfield Basin

open access: yesGeochemistry, Geophysics, Geosystems, Volume 27, Issue 2, February 2026.
Abstract Back‐arc basins provide insights into the processes governing the evolution of continental rifting to seafloor spreading. The Bransfield basin hosts a back arc rift that is hypothesized to be in the late stages of this transition. Orca volcano is a submarine volcano that lies on the most evolved portion of the rift.
Maleen Kidiwela   +3 more
wiley   +1 more source

Aeromagnetic anomalies and structure of the Iztaccíhuatl-Popocatépetl volcanic region in Central Mexico [PDF]

open access: yesGeofísica Internacional, 2002
Popocatépetl volcano is characterized by a high amplitude dipolar anomaly that is normally polarized and centered on the summit cone. The anomaly shows the effects of topographic relief and of major fault zones.
J.H. Flores-Ruiz   +6 more
doaj  

Subglacial Topography of Coats Land Records Post‐Gondwanan Landscape Evolution and Early Ice‐Sheet Behavior in East Antarctica

open access: yesJournal of Geophysical Research: Earth Surface, Volume 131, Issue 2, February 2026.
Abstract The East Antarctic Ice Sheet (EAIS) formed circa 34 million years ago and now contains an ice volume equivalent to ∼52 m of global sea‐level rise. Although the EAIS is approximately in balance today, there is substantial uncertainty regarding the sensitivity of sectors underlain by low‐lying bed topography to future climate and ocean warming ...
Guy J. G. Paxman   +5 more
wiley   +1 more source

Heat and Tectonics of the Canadian Cordillera From the Seismically Constrained Inversion of Gravity Data

open access: yesTectonics, Volume 45, Issue 2, February 2026.
Abstract An updated approach to seismically constrained modeling of gravity data reveals two broad, NW‐trending low‐density zones in the mantle lithosphere beneath the Canadian Cordillera. The low‐density zones coincide with a shallow lithosphere‐asthenosphere boundary (LAB), a shallow Curie‐point depth, and the location of Quaternary volcanoes.
Nathan Hayward, Tark S. Hamilton
wiley   +1 more source

Shallow thermal activity of Tokachidake Volcano (Japan) investigated through repeated drone-borne magnetic surveys

open access: yesEarth, Planets and Space
In recent years, new geothermal anomalies have been detected on the northwestern slope of the 62-II crater near the summit of Tokachidake Volcano, Hokkaido, Japan.
Toshiaki Hokari   +3 more
doaj   +1 more source

A compilation of new airborne magnetic and gravity data across Dronning Maud Land, Antarctica. [PDF]

open access: yes, 2007
The evolution of the South Atlantic region including the Weddell Sea and its adjacent areas is of crucialimportance for understanding the processes of the structure and tectonics of the Antarctic lithosphere, its relation to geodynamic processes ...
Jokat, Wilfried, Riedel, Sven
core  

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