Browse research papers in Geophysics - Earth and Planetary Sciences Discover 5 academic papers with AI-powered analysis

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Geophysics

The physics of Earth and its environment, including seismology, gravity, magnetism, electrical methods, and the use of geophysical techniques to explore Earth's interior and natural resources

5 papers in this specialization

Papers

Characteristics of evolution of mining-induced stress field in the longwall panel: insights from physical modeling

This study used a large-scale physical model and theoretical analysis to investigate stress field evolution in a longwall mining panel. The research revealed that the major principal stress field forms an arch-shaped structure, with high stress concentration on the shoulders, and influences the fracture morphology of the overlying strata in a pattern resembling an inverted funnel before the first breaking, and a “\” shaped breaking line during periodic weighting.

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s40789-020-00390-5.pdf

Jul 14, 05:24 PM

International Geomagnetic Reference Field: the thirteenth generation

The thirteenth generation of the International Geomagnetic Reference Field (IGRF-13) provides updated models of Earth's main magnetic field for epochs 2015.0 and 2020.0, along with a predictive secular variation model for 2020.0-2025.0. The model reveals continued weakening of the dipole moment and westward drift of the South Atlantic Anomaly, with significant implications for navigation, satellite operations, and studies of Earth's core and magnetosphere.

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s40623-020-01288-x.pdf

Jul 14, 05:13 PM

International Geomagnetic Reference Field: the thirteenth generation

This paper introduces IGRF-13, the thirteenth generation of the International Geomagnetic Reference Field, providing updated coefficients and maps for the Earth's main magnetic field. The model includes a definitive main field for 2015.0, a main field for 2020.0, and a predictive secular variation model for 2020.0-2025.0, indicating continued weakening of the dipole moment and westward movement of the South Atlantic Anomaly.

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s40623-020-01288-x.pdf

Jul 14, 05:11 PM

Secular change and the onset of plate tectonics on Earth

Evidence suggests a global-scale initiation of plate tectonics no later than c. 3 Ga. Earlier apparent subduction events may be attributed to localized plume-induced subduction initiation, which did not develop into a stable global network until the Mesoarchean or later.

2022 Tonga Volcanic Eruption Induced Global Propagation of Ionospheric Disturbances via Lamb Waves

The 2022 Tonga volcanic eruption triggered ionospheric disturbances that propagated globally for at least four days, traveling around the globe multiple times. The disturbances exhibited characteristics consistent with Lamb waves, suggesting their significant role in the global propagation of the eruption's effects.