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Geosciences
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Satellite/Airborne Gravity and Magnetic Investigations
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Satellite/Airborne Gravity and Magnetic Investigations

A special issue of Geosciences (ISSN 2076-3263). This special issue belongs to the section "Geophysics".

Deadline for manuscript submissions: closed (25 November 2022) | Viewed by 6277

Special Issue Editor

Prof. Dr. Lev V. Eppelbaum

E-Mail Website
Guest Editor
Dept. of Geophysics, Faculty of Exact Sciences, Tel Aviv University, Ramat Aviv 69978, Tel Aviv, Israel
Interests: potential geophysical fields; tectonics; geodynamics; 3D models of the Earth's crust; paleomagnetic reconstructions; natural hazards; environmental geophysics; archaeological geophysics; searching for economic minerals
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

I would like to bring to your attention to a Special Issue of Geosciences entitled “Satellite/Airborne Gravity and Magnetic Investigations”. This Special Issue will cover satellite- and airborne-derived gravity and magnetic field measurements with the aim of: (1) prediction of dangerous geodynamic events at a depth; (2) searching for economic minerals; (3) geological–geophysical mapping; (4) development of physical–geological models of deep structures and sub-surfaces; (5) paleomagnetic reconstructions; (6) solving different tectono-geodynamic problems; and (7) integrated analysis of gravity–magnetic data using other geophysical methods. The preliminary deadline for manuscript submission is February 20, 2021. The template for manuscript preparation can be downloaded from https://www.mdpi.com/journal/geosciences/instructions

Prof. Dr. Lev V. Eppelbaum
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Geosciences is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 1800 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • satellite gravity
  • satellite magnetics
  • airborne magnetics
  • physical–geological models
  • 3D modeling of potential fields
  • geodynamics
  • tectonics
  • paleomagnetic reconstructions
  • integrated analysis

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Published Papers (2 papers)

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Research

22 pages, 13639 KiB  
Article
Improvement of GOCE-Based Global Geopotential Models for Gravimetric Geoid Modeling in Turkey
by Mustafa Serkan Isik, Muhammed Raşit Çevikalp, Bihter Erol and Serdar Erol
Geosciences 2022, 12(12), 432; https://doi.org/10.3390/geosciences12120432 - 23 Nov 2022
Cited by 6 | Viewed by 2030
Abstract
This study investigates the contribution of global geopotential models which are calculated with GOCE satellite mission data to the improvement of gravimetric geoid models in Turkey. In this context, direct (DIR), time-wise (TIM), space-wise (SPW), and GOCO satellite-only model series were considered. The [...] Read more.
This study investigates the contribution of global geopotential models which are calculated with GOCE satellite mission data to the improvement of gravimetric geoid models in Turkey. In this context, direct (DIR), time-wise (TIM), space-wise (SPW), and GOCO satellite-only model series were considered. The research was carried out in two parts. The first part includes the validation of models in each series at 100 homogeneously distributed GNSS/leveling stations over the country utilizing spectrally enhanced geoid heights to determine the best performing model and its optimal expansion degree. According to obtained statistics, the TIM-R6 model was selected as the best model with an optimal expansion degree of 204. In the second part, the TIM-R6 model up to 204 degree/order was linearly blended with EGM2008 to obtain an improved version up to 360 degree/order of expansion. To clarify the contribution of the linearly blended model to the improvement of the regional geoid model, the gravimetric geoid models were computed adopting TIM-R6 up to 204 degree/order and its improved version up to 360 degree/order as reference models. To further emphasize the contribution of the GOCE mission’s data, the gravimetric geoid computations were repeated relying on EGM2008 up to 204 and 360 degrees of expansions, since EGM2008 does not contain GOCE data. In addition, we computed gravimetric geoids based on another combined model that includes GOCE mission data, the EIGEN-6C4 model. The calculated regional geoids were compared to each other and validated using GNSS/leveling data set. The obtained results revealed a ∼23% improvement in regional geoid model accuracy when the blended GOCE-based geopotential model was used as a reference. In addition, the results of this study presented the significance of GOCE contribution to mapping the gravity field in Turkey. The best accuracy obtained from this study was 7.7 cm for the Turkey geoid. Full article
(This article belongs to the Special Issue Satellite/Airborne Gravity and Magnetic Investigations)
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25 pages, 12295 KiB  
Article
Basement Structure and Styles of Active Tectonic Deformation in Central Interior Alaska
by Nilesh C. Dixit and Catherine Hanks
Geosciences 2021, 11(3), 127; https://doi.org/10.3390/geosciences11030127 - 10 Mar 2021
Cited by 3 | Viewed by 3452
Abstract
Central Interior Alaska is one of the most seismically active regions in North America, exhibiting a high concentration of intraplate earthquakes approximately 700 km away from the southern Alaska subduction zone. Seismological evidence suggests that intraplate seismicity in the region is not uniformly [...] Read more.
Central Interior Alaska is one of the most seismically active regions in North America, exhibiting a high concentration of intraplate earthquakes approximately 700 km away from the southern Alaska subduction zone. Seismological evidence suggests that intraplate seismicity in the region is not uniformly distributed, but concentrated in several discrete seismic zones, including the Nenana basin and the adjacent Tanana basin. Although the location and magnitude of the seismic activity in both basins are well defined by a network of seismic stations in the region, the tectonic controls on these intraplate earthquakes and the heterogeneous nature of Alaska’s continental interior remain poorly understood. We investigated the crustal structure of the Nenana and Tanana basins using available seismic reflection, aeromagnetic and gravity anomaly data, supplemented by geophysical well logs and outcrop data. We developed nine new two-dimensional forward models to delineate internal geometries and the crustal structure of Alaska’s interior. The results of our study demonstrates a strong crustal heterogeneity beneath both basins. The Tanana basin is a relatively shallow (up to 2 km) asymmetrical foreland basin with its southern, deeper side controlled by the northern foothills of the Central Alaska Range. Northeast-trending left lateral strike-slip faults within the Tanana basin are interpreted as a zone of clockwise crustal block rotation. The Nenana basin has a fundamentally different geometry. It is a deep (up to 8 km), narrow transtensional pull-apart basin that is deforming along the left-lateral Minto Fault. This study identifies two distinct modes of current tectonic deformation in Central Interior Alaska and provides a basis for modeling the interplay between intraplate stress fields and major structural features that potentially influence the generation of intraplate earthquakes in the region. Full article
(This article belongs to the Special Issue Satellite/Airborne Gravity and Magnetic Investigations)
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