Results 91 to 100 of about 21,163 (257)
Abstract The rise of quantitative geosciences approaches and accessible computer science tools have led to increasing overlap and opportunity at the boundaries of both fields. The need for both research innovation and student cross‐training has motivated new, interdisciplinary Computer Science‐Geoscience collaborations.
Elizabeth Hajek +2 more
wiley +1 more source
Fourier Shell Analysis: k‐Space‐Based Metrics for Assessing Super‐Resolution in 4D Flow MRI
ABSTRACT Purpose To support the emerging field of super‐resolution (SR) in 4D flow MRI by proposing Fourier shell analysis to disentangle resolution enhancement from denoising effects during evaluation. Methods A thoracic aortic 4D flow MRI dataset was synthesized with various degrees of stenosis, providing ground truth flow fields generated using ...
Luuk Jacobs +2 more
wiley +1 more source
Magneto-seismological insights into the penumbral chromosphere and evidence for wave damping in spicules [PDF]
Aims: The observation of propagating magneto-hydrodynamic kink waves in magnetic structures and measurement of their properties (amplitude, phase speed) can be used to diagnose the plasma conditions in the neighbourhood of the magnetic structure via ...
Morton, Richard, R. J. Morton
core +1 more source
In this paper, the author proposed a methodology to reveal expected seismic activation places for coming years by a complex of forecasting parameters of a seismic mode.
T.U. Artikov +3 more
doaj +1 more source
This study presents physics‐based, 3D simulations using the EQSIM framework for several earthquakes in the Los Angeles region. The primary objective was to assess the ability of deterministic physics‐based ground motion simulations to reproduce the observed motions from historical events.
Chu‐Han (Clifford) Yen +5 more
wiley +1 more source
Early european women In seismology [PDF]
Inge Lehmann is the best-known European woman seismologist, but she is not an isolated case. The presence of women seismologists in Europe has a long tradition, with the earliest women researchers appearing at the beginning of the 20th century in the ...
Buforn Peiró, Vicenta María Elisa
core +1 more source
Validation of ShakeMaps Created From Global Navigation Satellite System (GNSS) Velocities
Ground velocity observations generated through a time difference of Global Navigation Satellite Systems (GNSS) phase observables and orbits have been shown to be comparable to seismic recordings without clipping during intense ground motions. Computing GNSS velocities is also computationally scalable and increases the density of ground motion ...
Jensen V. DeGrande, Brendan W. Crowell
wiley +1 more source
Hamilton's principle and normal mode coupling in an aspherical planet with a fluid core [PDF]
We apply Hamilton's principle to obtain the exact equations of motion for an elastic planet that is rotating, self-gravitating and comprises both fluid and solid regions.
David Al-Attar +13 more
core +1 more source
Vertical gravity gradient modeling and its influence on gravity datum transfer
In the past, the free-air gradient −308.6 × 10−8 s−2 was used as the vertical gravity gradient of the measuring point in gravity data processing, which resulted in inaccurate instrument height corrections.
Tianxiang Zhou +8 more
doaj +1 more source
Partitioning Site Amplification and κ0 in Earthquake Recordings
This study explores site amplification and spectral decay (κ0) estimates, focusing on the challenge of separating the two in observed Fourier amplitude spectra (FAS). We apply two general approaches: a Bayesian broadband inversion for simultaneous estimation of site amplification and κ0, and slope‐based methods for direct κ0 estimation from the ...
Bartik Pandel +3 more
wiley +1 more source

