Results 81 to 90 of about 16,809 (204)

Hunga‐Tonga Volcano Plumbing System Inferred From Virtual Seismometer Approach

Geochemistry, Geophysics, Geosystems, Volume 27, Issue 5, May 2026.
Abstract We present a surface wave tomography application based on event‐pair interferometry to investigate local (∼100 km) mid‐ocean crustal structures, with a particular focus on imaging a potential crustal solidified intrusive complex in a region lacking seismic stations.
Taghi Shirzad, Marcelo Bianchi, Mohsen Kazemnia, Götz Bokelmann   +3 more
wiley   +1 more source

Seismicity, Repeating Earthquakes, and Tomographic Imaging of the Blanco Transform Fault System, Northeast Pacific

Journal of Geophysical Research: Solid Earth, Volume 131, Issue 5, May 2026.
Abstract The Blanco transform fault system (BTFS) represents an evolving transform plate boundary in the Northeast Pacific Ocean. Its seismic behavior was captured with a dense network of 54 ocean‐bottom seismometers (OBS) operated for 1 year. We created a high‐resolution earthquake catalog based on different machine‐learning onset pickers.
D. Lange, Y. Ren, I. Grevemeyer
wiley   +1 more source

Layered Seismic Anisotropy and Tectonics of the Anatolian Plate

Geophysical Research Letters, Volume 53, Issue 8, 28 April 2026.
Abstract Anatolian tectonics are associated with slab retreat in the west and gravitational potential energy and continental collision in the east, leading to westward motion of Anatolia relative to Eurasia, partially accommodated on the North and East Anatolian transform faults.
Chuanming Liu, Vera Schulte‐Pelkum, Thorsten W. Becker, Frederik Link, Lili Feng   +4 more
wiley   +1 more source

Impact of Non‐Classical Gravity‐Wave Dynamics on Middle‐Atmosphere Mean Flow and Solar Tides

Journal of Geophysical Research: Atmospheres, Volume 131, Issue 8, 28 April 2026.
Abstract Conventional gravity‐wave (GW) parameterizations neglect three aspects of GW dynamics. Instead of momentum and entropy fluxes they use Eliassen‐Palm fluxes, thereby neglecting the possibility that resolved flow are not in geostrophic and hydrostatic balance.
T. Kühner, G. S. Völker, U. Achatz
wiley   +1 more source

A fast sweeping method for Eikonal equations [PDF]

Mathematics of Computation, 2004
In this paper a fast sweeping method for computing the numerical solution of Eikonal equations on a rectangular grid is presented. The method is an iterative method which uses upwind difference for discretization and uses Gauss-Seidel iterations with alternating sweeping ordering to solve the discretized system.
openaire   +2 more sources

Solving the eikonal equation by the FSM method in Julia language

Discrete and Continuous Models and Applied Computational Science
There are two main approaches to the numerical solution of the eikonal equation: reducing it to asystemofODES(methodofcharacteristics)andconstructingspecializedmethodsforthenumericalsolutionof this equation in the form of a partial differential equation.
Christina A. Stepa, Arseny V. Fedorov, Migran N. Gevorkyan, Anna V. Korolkova, Dmitry S. Kulyabov   +4 more
doaj   +1 more source

On population extinction risk in the aftermath of a catastrophic event

, 2008
We investigate how a catastrophic event (modeled as a temporary fall of the reproduction rate) increases the extinction probability of an isolated self-regulated stochastic population.
Alex Kamenev, B. Gaveau, Baruch Meerson, C. W. Gardiner, L. D. Landau, M. I. Freidlin, Michael Assaf, N. G. van Kampen, R. Graham   +8 more
core   +1 more source

Landslide Activity in the European Alps ‐ Part 1: A Machine Learning Based Instrumental Catalog From the Analysis of Seismological Data

Journal of Geophysical Research: Earth Surface, Volume 131, Issue 4, April 2026.
Abstract Landslides in the European Alps are a growing concern in the context of climate change. However, landslide catalogs for the European Alps remain incomplete, often lacking precise timing and containing few, if any, entries for remote areas.
Charlotte Groult, Clément Hibert, Jean‐Philippe Malet, Anthony Lomax, Floriane Provost   +4 more
wiley   +1 more source

Bootstrapping the spinning two body problem in dynamical Chern-Simons gravity using worldline QFT

Journal of High Energy Physics
In this paper, we compute the WQFT partition function, specifically the eikonal phase in a black hole scattering event in the dynamical Chern-Simons theory, using the techniques of spinning worldline quantum field theory.
Arpan Bhattacharyya, Debodirna Ghosh, Saptaswa Ghosh, Sounak Pal   +3 more
doaj   +1 more source

Joint P- and S-Wave VSP Traveltime Tomography via Well Log-Guided Physics-Informed Neural Networks

IEEE Access
Traveltime tomography is widely used in seismology to construct accurate long-wavelengthsubsurface velocity models and to investigate the Earth’s internal structure and dynamic processes.
Tengyu Wang, Dingding Deng, Duoming Zheng, Zhen Zhang, Wenjun Luo, Yang Liu   +5 more
doaj   +1 more source