Satellite-altitude horizontal magnetic gradient anomalies used to define the Kursk Magnetic Anomaly

Taylor, P. T.; Kis, K.I.; Wittmann, G.

doi:10.1016/j.jappgeo.2014.07.018

Cited by 9 publications

(6 citation statements)

References 19 publications

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“…It is one of the largest-amplitude magnetic anomalies in Russia. In ground-based measurements, the maximum amplitude of the Kursk anomaly was found to be nearly 200,000 nT (Ravat et al, 1993;Taylor et al, 2014). The distribution of the Kursk magnetic anomaly is correlated with the large iron-ore deposit in the Voronezh Crystalline Massif of the Ukrainian Shield, a Precambrian basement structure (Ravat et al, 1993).…”

Section: Introductionmentioning

confidence: 90%

Preliminary geological interpretation of long-wavelength magnetic anomalies over China and surrounding regions

Wang,

Yang,

Zeren

et al. 2024

Earth and Planetary Physics

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Geological origins of long-wavelength magnetic anomalies in China and surrounding regions are reviewed, including six magnetic high anomalies over the (1) Tarim Basin, (2) Sichuan Basin (3) Great Xing'an Range, (4) Barmer Basin, (5) Central Myanmar Basin, and (6) Sunda and Banda Arcs, and a striking magnetic low anomaly along the southern part of the Himalayan-Tibetan Plateau.• The tectonic backgrounds for these long-wavelength anomalies are related to either ancient basin basement or subduction-collision zone.• The difficulties of geological interpretation of long-wavelength magnetic anomalies come mainly from limited surface exposure of sources, later tectonic destruction, and superposition of multi-phase events.

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Section: Introductionmentioning

confidence: 90%

Preliminary geological interpretation of long-wavelength magnetic anomalies over China and surrounding regions

Wang,

Yang,

Zeren

et al. 2024

Earth and Planetary Physics

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“…Previously we Taylor et al [13] calculated the horizontal gradients over the Kursk magnetic anomaly. In this study the vertical, north and east gradients will be computed.…”

Section: Determining Champ Magnetic Anomaly Gradientsmentioning

confidence: 99%

Determination of the Earth’s Magnetic Field Gradients from Satellites Measurements and Their Inversion over the Kursk Magnetic Anomaly

Ki¹,

Pt²,

Wittmann³

2016

J Aeronaut Aerospace Eng

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We computed magnetic field gradients at satellite altitude, over Europe with emphasis on the Kursk Magnetic Anomaly (KMA). They were calculated using the CHAMP satellite total magnetic anomalies. Our computations were done to determine how the magnetic field observations data from the new ESA/Swarm satellites could be utilized to determine the structure of the magnetization of the Earth's crust, especially in the region of the KMA. Ten years of CHAMP data were used to simulate the Swarm data. An initial east magnetic anomaly gradient map of Europe was computed and subsequently the North, East and Vertical magnetic gradients for the KMA region were calculated. The vertical gradient of the KMA was also determined using Hilbert transforms. Inversion of the total KMA was derived using Simplex and Simulated Annealing algorithms. The depths of the upper and lower boundaries are calculated downward from the 324 km elevation of the satellite. Our resulting inversion depth model is a horizontal quadrangle. The maximum errors are determined by the model parameter errors.

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“…The latest previous studies showed that Swarm satellites can be used for monitoring electrical conductivity of the mantle (Civet et al, 2015), analysing the external magnetic field (Moretto et al, 2006), interpretation of regional total magnetic field (Taylor et al, 2014;Taylor et al, 2019), monitoring the magnetic field as an earthquake precursor (Akhoondzadeh, 2018).…”

Section: Introductionmentioning

confidence: 99%

Interpretation of the magnetic anomalies over the Mid-Atlantic Ocean Ridge using Swarm-A satellite

Özsöz

Pamukçu

2022

Geofizika (Online)

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The procedures and interpretation of the magnetic data measured over the Mid-Atlantic Ocean Ridge by Swarm-A satellite is discussed in this paper. The data processing procedure has four phases after the data format conversion. The first phase is the selecting data whose Kp index is lower than 1. Secondly, the main magnetic field should be subtracted from the measured data for example through the IGRF model. This step is followed by removing trend, related to the satellite trajectory. The final step is eliminating the dipole nature of the magnetic field via Reduction to the Pole (RTP). Nonetheless, the RTP process might cause misinterpretation over the large study area and lower latitudes. Therefore, the amplitude of the analytic signal (AS) is used as an alternative to the RTP. The qualitative interpretation of the magnetic anomaly is conducted via AS anomaly, bathymetry, heat flow and tectonic map. Quantitatively correlation coefficients of bathymetry and heat flow with respect to AS are interpreted.

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Satellite-altitude horizontal magnetic gradient anomalies used to define the Kursk Magnetic Anomaly

Cited by 9 publications

References 19 publications

Preliminary geological interpretation of long-wavelength magnetic anomalies over China and surrounding regions

Preliminary geological interpretation of long-wavelength magnetic anomalies over China and surrounding regions

Determination of the Earth’s Magnetic Field Gradients from Satellites Measurements and Their Inversion over the Kursk Magnetic Anomaly

Interpretation of the magnetic anomalies over the Mid-Atlantic Ocean Ridge using Swarm-A satellite

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