Results 91 to 100 of about 67,700 (324)

Chromospheric Seismology [PDF]

open access: yesSymposium - International Astronomical Union, 1988
The aim of the present study is to examine whether seismologic diagnostic techniques may be used to improve the models of the solar chromosphere. We are mainly concerned by oscillations observed in the cores of strong lines such as the resonance lines of Ca II or Mg II. It is intuitive, and confirmed by numerical simulations (Gouttebroze and Leibacher,
openaire   +1 more source

NSF GAGE/SAGE Community Science Workshop: Advancing Geophysical Research Through Collaboration

open access: yesPerspectives of Earth and Space Scientists, Volume 6, Issue 1, December 2025.
Abstract The 2025 NSF GAGE/SAGE Community Science Workshop, hosted by the EarthScope Consortium from May 18–21 in Bloomington, Minnesota, convened 188 participants from 109 institutions for four days of scientific exchange and community engagement. The workshop featured plenary sessions, poster presentations, special interest groups, and networking ...
Gillian Haberli   +4 more
wiley   +1 more source

Determination of the cross-field density structuring in coronal waveguides using the damping of transverse waves

open access: yes, 2014
Time and spatial damping of transverse magnetohydrodynamic (MHD) kink oscillations is a source of information on the cross-field variation of the plasma density in coronal waveguides.
Arregui, I., Ramos, A. Asensio
core   +1 more source

Geophysical aspects of very long baseline neutrino experiments [PDF]

open access: yes, 2001
Several proposed experiments will send beams of neutrinos through the Earth along paths with a source-receiver distance of hundreds or thousands of kilometers. Knowledge of the physical properties of the medium traversed by these beams, in particular the
Bullen   +10 more
core   +2 more sources

Common Sensor Platform Project

open access: yesPerspectives of Earth and Space Scientists, Volume 6, Issue 1, December 2025.
Abstract EarthScope Consortium's Common Sensor Platform (CSP) project is a unified, modular, and scalable design approach for geophysical instrumentation deployments. Developed through cross disciplinary collaboration of National Science Foundation's GAGE and SAGE facilities, the platform outlines core station subsystems that have the flexibility to be
Molly Staats   +14 more
wiley   +1 more source

LFW2BBP: Broadband Ground‐Motion Parameters Estimation Using Physics‐Based Simulated Low‐Frequency Waveforms and Deep Learning

open access: yesJournal of Geophysical Research: Machine Learning and Computation, Volume 2, Issue 4, December 2025.
Abstract Accurate prediction of broadband ground motion parameters is important for earthquake disaster prevention and mitigation. Due to the lack of high wave number components in the source rupture process and velocity models, physics‐based ground motion simulation methods can only reliably produce low‐frequency ground motions (< ${< } $1 Hz).
Yuxing Pan   +3 more
wiley   +1 more source

Frequency dependent attenuation of seismic waves for Delhi and surrounding area, India

open access: yesAnnals of Geophysics, 2015
The attenuation properties of Delhi & surrounding region have been investigated using 62 local earthquakes recorded at nine stations. The frequency dependent quality factors Qa (using P-waves) and Qb (using S-waves) have been determined using the ...
Babita Sharma   +4 more
doaj   +1 more source

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