Results 1 to 10 of about 3,521 (164)

Wavelet-Based Three-Dimensional Inversion for Geomagnetic Depth Sounding

Magnetochemistry, 2022
The complexity of Earth’s structure poses a challenge to the multiscale detection capability of geophysics. In this paper, we present a new wavelet-based three-dimensional inversion method for geomagnetic depth sounding.
Shiwen Li, Yunhe Liu
doaj   +4 more sources

A Mantle Plume Beneath South China Revealed by Electrical Conductivity Obtained from Three-Dimensional Inversion of Geomagnetic Data [PDF]

Sensors, 2023
A three-dimensional electrical conductivity model of the mantle beneath South China is presented using the geomagnetic depth sounding method in this paper.
Shiwen Li, Yunhe Liu, Jianping Li
doaj   +2 more sources

GDS (Geomagnetic Depth Sounding) in Italy: applications and perspectives

Annals of Geophysics, 1998
The analysis of geomagnetic field variations is a useful tool to detect electrical conductivity contrasts within the Earth. Lateral resolution of outlined patterns depends on the array dimensions and density of measurement sites over the investigated ...
M. Gambetta, A. De Santis, V. Cerv, E. Bozzo, E. Armadillo, D. Di Mauro, A. Meloni   +6 more
doaj   +3 more sources

Electrical conductivity in the mantle transition zone beneath eastern Central Asian Orogenic Belt revealed by geomagnetic signals [PDF]

Scientific Reports
In the eastern segment of the Central Asian Orogenic Belt (CAOB), there is widespread volcanic magma activity. However, there is still considerable controversy over the formation mechanisms and material sources of these volcanoes.
Yanhui Zhang, Yujia Hu, Mina Ma, Yuyan Zhang   +3 more
doaj   +2 more sources

Lower crustal resistivity signature of an orogenic gold system [PDF]

Scientific Reports, 2021
Orogenic gold deposits provide a significant source of the world’s gold and form along faults over a wide range of crustal depths spanning sub-greenschist to granulite grade faces, but the source depths of the gold remains poorly understood.
Graham Heinson, Jingming Duan, Alison Kirkby, Kate Robertson, Stephan Thiel, Sasha Aivazpourporgou, Wolfgang Soyer   +6 more
doaj   +2 more sources

Deep crustal magnetotelluric imaging of continental accretion and intracontinental deformation in central Australia [PDF]

Scientific Reports
Central Australia preserves a record of micro-continent and craton accretion during assembly of the Paleoproterozoic Nuna supercontinent 2500 − 1600 Ma, followed by Mesoproterozoic magmatic and orogenic events that formed the Musgrave Province.
Graham Heinson, Ben Kay, David Baker, Relly Margiono   +3 more
doaj   +2 more sources

Trans-dimensional Bayesian joint inversion of magnetotelluric and geomagnetic depth sounding responses to constrain mantle electrical discontinuities

Geophysical Journal International, 2023
SUMMARYJoint inversion of magnetotelluric (MT) and geomagnetic depth sounding (GDS) responses can constrain the crustal and mantle conductivity structures. Previous studies typically use either deterministic inversion algorithms that provide limited information on model uncertainties or using stochastic inversion algorithms with a predetermined number ...
HongBo Yao, Zhengyong Ren, Jingtian Tang   +2 more
exaly   +2 more sources

Geomagnetic depth sounding analysis of the electrical conductivity of the mid-mantle beneath Taiwan

Earth, Planets and Space
The electrical conductivity structure of the mid-mantle at depths of 300–900 km beneath Taiwan was investigated for the first time by applying geomagnetic depth sounding (GDS) to geomagnetic field data.
Ding-Jiun Lin, Kiyoshi Baba, Ping-Yu Chang, Jordi Mahardika Puntu, Haiyina Hasbia Amania   +4 more
doaj   +2 more sources

Mantle conductivity structure beneath eastern China using 3-D geomagnetic depth sounding

Frontiers in Earth Science
The distribution of water in the mantle plays a critical role in deep earth dynamic processes, including plate subduction, earthquake generation, and magmatic activity.
Xinpeng Ma, Jingru Li, Kaijun Xu
doaj   +2 more sources

Satellite tidal magnetic signals constrain oceanic lithosphere-asthenosphere boundary. [PDF]

Sci Adv, 2016
The tidal flow of electrically conductive oceans through the geomagnetic field results in the generation of secondary magnetic signals, which provide information on the subsurface structure.
Grayver AV, Schnepf NR, Kuvshinov AV, Sabaka TJ, Manoj C, Olsen N.   +5 more
europepmc   +3 more sources