Results 111 to 120 of about 27,395 (224)

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

From GHz to mHz: A Multiwavelength Study of the Acoustically Active 14 August 2004 M7.4 Solar Flare

, 2007
We carried out an electromagnetic acoustic analysis of the solar flare of 14 August 2004 in active region AR10656 from the radio to the hard X-ray spectrum.
A. Ambastha, A. Ambastha, A.-C. Donea, A.-C. Donea, A.-C. Donea, A.-C. Donea, A.G. Kosovichev, A.G. Kosovichev, C. Lindsey, C. Lindsey, C.E. DeForest, C.L. Wolff, D. Besliu-Ionescu, D.C. Braun, D.C. Braun, D.C. Braun, D.C. Braun, D.C. Braun, H. Moradi, H. Moradi, H. Wang, H.J. Schunker, H.S. Hudson, J. C. Martínez-Oliveros, J. Qiu, J. Sato, J.J. Sudol, M.R. Kundu, P. S. Cally, P.H. Scherrer, R.B. Leighton, R.F. Stein, R.F. Stein, T. Sakurai, T.R. Metcalf, T.S. Bastian, V. Grechnev, W.M. Neupert   +37 more
core   +1 more source

Adsorption Preceding Wetting Front Controls Seismic Velocity

Geophysical Research Letters, Volume 53, Issue 8, 28 April 2026.
Abstract Rock elasticity varies with both humidity and water saturation, yet their combined effects remain poorly understood, although in nature vapor adsorption and liquid infiltration occur simultaneously. Here, we present experimental data of P‐wave velocity and volume expansion in a free‐standing sandstone subject to progressive wetting.
Rui Wu, Hongpu Kang, Fuqiang Gao, Xiangyuan Peng, Shuangyong Dong, Chenxi Zhao, Bing Qiuyi Li, Kerry Leith, Qinghua Lei, Gennady Y. Gor, Paul A. Selvadurai, Xiaoping Jia   +11 more
wiley   +1 more source

Ambient seismic noise tomography of the Antarctic continent [PDF]

, 2019
The lithosphere of Antarctica reacts to both the stress variations due to the dynamics of the mantle and the variation of the glacial load due to changes in climate. These two factors act on the dynamics of the glacial mass, on the evolution of the continent's topography and on the plate seismicity.
openaire   +1 more source

Detecting Thunderstorm‐Related High‐Energy Phenomena in Weak Signals

Journal of Geophysical Research: Atmospheres, Volume 131, Issue 8, 28 April 2026.
Abstract Gamma‐ray glows (GRGs) are high‐energy events associated with thunderstorms, characterized by an enhancement of the high‐energy background radiation lasting from a few seconds to several minutes. They are typically detected near their sources by balloons, aircraft, mountain‐based observatories, or at sea level in regions where thunderstorms ...
Y. Hazem, S. Celestin, F. Trompier, Y. Hobara   +3 more
wiley   +1 more source

Reflection images from ambient seismic noise

Geophysics, 2009
Abstract One application of seismic interferometry is to retrieve the impulse response (Green's function) from crosscorrelation of ambient seismic noise. Various researchers show results for retrieving the surface-wave part of the Green's function. However, reflection retrieval has proven more challenging.
Draganov, D.S. (author), Campman, X. (author), Thorbecke, J.W. (author), Verdel, A. (author), Wapenaar, C.P.A. (author)   +4 more
openaire   +4 more sources

Characterization of Near‐Surface Velocity Structure at Haast, New Zealand, Using Distributed Acoustic Sensing (DAS) Measurements of Seismicity

Geophysical Research Letters, Volume 53, Issue 7, 16 April 2026.
Abstract Distributed acoustic Sensing (DAS) data collected along a 30 km length of telecommunications fiber crossing the Alpine Fault near Haast enable analysis of interactions between fluvioglacial and seismotectonic processes. Here we use DAS recordings of 25 earthquakes to probe near‐surface structure beneath the Haast river valley.
Allan Raudsepp, Calum J. Chamberlain, Voon Hui Lai, Meghan S. Miller, John Townend   +4 more
wiley   +1 more source

Assessing the Main Frequencies of Modern and Historical Buildings Using Ambient Noise Recordings: Case Studies in the Historical Cities of Crete (Greece)

Heritage, 2018
Monitoring seismic structural response is an essential issue in earthquake risk assessments and mitigation studies for monumental buildings in order to undertake earthquake disaster management.
Margarita Moisidi, Filippos Vallianatos, Maria Rosaria Gallipoli   +2 more
doaj   +1 more source

Observing Broadband Tsunamis in Deep Water Via Distributed Acoustic Sensing

Geophysical Research Letters, Volume 53, Issue 7, 16 April 2026.
Abstract Tsunamis have been detected as strain variations in optical fibers of submarine cables through distributed acoustic sensing (DAS). However, the usefulness of strain variations during tsunamis for early warning remains unclear. Here, we compare fiber strains and sea‐level changes for both infragravity waves in ambient noise and tsunamis ...
T. Tonegawa, E. Araki
wiley   +1 more source

Spatio-temporal changes in the seismic velocity induced by the 2011 Tohoku-Oki earthquake and slow slip event revealed from seismic interferometry, using ocean bottom seismometer’s records

Progress in Earth and Planetary Science, 2018
Seismic interferometry is one of the most effective techniques for detecting temporal variations in seismic velocity caused by large earthquakes. Before the 2011 Tohoku-Oki earthquake (M w 9.0) near the Japan Trench, a slow slip event (SSE, M w 7.0) and ...
Miyuu Uemura, Yoshihiro Ito, Kazuaki Ohta, Ryota Hino, Masanao Shinohara   +4 more
doaj   +1 more source