Results 61 to 70 of about 22,636 (288)

Fiber-optic vibration sensing—I: Rotation measurement technique and its seismological applications

地球与行星物理论评, 2022
The seismic wavefield can be decomposed into three-component translational motions and three-component rotational motions. The rotation components contain important wavefield gradient information and are key elements of seismic wavefield reconstruction ...
Weijun Wang, Ling Chen, Yibo Wang, Fei Peng   +3 more
doaj   +1 more source

Subtle relict channels associated with large dolines in an area formerly beneath the Laurentide Ice Sheet, northern Ohio, USA

Boreas, EarlyView.
Low‐relief dry channels appear out of place across a glaciated karst landscape in northern Ohio. Channels are only a few metres deep cut into limestone and draped with a veneer of till. Several hypotheses are proposed for explaining the channels. Low‐relief dry channels are observed across the Bellevue‐Castalia Karst Plain of north‐central Ohio, USA ...
Timothy G. Fisher, Douglas J. Aden, Brittany D. Parrick, Kennedy O. Doro, Ira D. Sasowsky, Tyler A. Norris, Giorgi Chartolani   +6 more
wiley   +1 more source

A History of UNAVCO: Four Decades of Advancing Geodesy

Perspectives of Earth and Space Scientists, Volume 6, Issue 1, December 2025.
Abstract UNAVCO was a university‐governed consortium funded by the National Science Foundation (NSF), with support from the National Aeronautics and Space Administration (NASA) and the United States Geological Survey (USGS), to support geoscience research and education using geodesy.
Emily E. Zawacki, Donna J. Charlevoix, Charles M. Meertens, Jeffrey T. Freymueller, Tonie van Dam   +4 more
wiley   +1 more source

A New Lunar Crustal Thickness Model Constrained by Converted Seismic Waves Detected Beneath the Apollo Seismic Network

Geophysical Research Letters, Volume 52, Issue 13, 16 July 2025.
Abstract Analysis of conversions between compressional and shear waves is a workhorse method for constraining crustal and lithospheric structure on Earth; yet, such converted waves have not been unequivocally identified in seismic data from the largest events on the Moon, due to the highly scattered waveforms of shallow seismic events. We reanalyze the
D. Kim, V. Lekić, M. A. Wieczorek, N. C. Schmerr, G. S. Collins, M. P. Panning   +5 more
wiley   +1 more source

Along‐Arc Heterogeneity in Local Seismicity across the Lesser Antilles Subduction Zone from a Dense Ocean‐Bottom Seismometer Network

Seismological Research Letters, 2019
The Lesser Antilles arc is only one of two subduction zones where slow‐spreading Atlantic lithosphere is consumed. Slow‐spreading may result in the Atlantic lithosphere being more pervasively and heterogeneously hydrated than fast‐spreading Pacific ...
L. Bie, A. Rietbrock, S. Hicks, R. Allen, J. Blundy, V. Clouard, J. Collier, J. Davidson, T. Garth, S. Goes, Nicholas Harmon, T. Henstock, J. Hunen, M. Kendall, F. Krüger, L. Lynch, C. Macpherson, R. Robertson, Kate Rychert, S. Tait, J. Wilkinson, M. Wilson   +21 more
semanticscholar   +1 more source

Evidence for Fluid Pressurization of Fault Zones and Persistent Sensitivity to Injection Rate Beneath the Raton Basin

Geophysical Research Letters, Volume 52, Issue 13, 16 July 2025.
Abstract Subsurface wastewater injection has increased the seismicity rate within the Raton Basin over more than two decades, with the basin‐wide injection rate peaked between 2009 and 2015. To understand the evolution of injection‐induced earthquakes, we systematically analyzed 2016–2024 broadband recordings with a machine‐learning‐based phase picker ...
Mohammadreza Jamalreyhani, Ruijia Wang, Brandon Schmandt, Andres Felipe Peña Castro, Margaret Elizabeth Glasgow   +4 more
wiley   +1 more source

Rumble in the jungle: Convolutional neural networks demonstrate accurate footfall identification of terrestrial mammals

Ecological Solutions and Evidence, Volume 6, Issue 3, July–September 2025.
In this study, we developed a seismological approach to wildlife surveying by recording ground vibrations produced by four large mammal species using a footfall trap prototype. After signal processing, we extracted 10,965 footfall events, which we used to train four convolutional neural network models.
Benjamin J. Blackledge, Patrick J. C. White   +1 more
wiley   +1 more source

Seismometer designed for remote operation in random orientation [PDF]

, 1966
Portable seismometer mounted in a rugged housing can be placed in inaccessible locations and operate efficiently in other than a vertically upright position. The instrument housing contains an amplifier, transmitter, and antenna to relay measurement data
Lehner, F. E.
core   +1 more source

Imaging the Sediment Cover Offshore Central Chile With Surface‐Wave Dispersion and P‐Wave Conversion Using Distributed Acoustic Sensing

Journal of Geophysical Research: Solid Earth, Volume 130, Issue 7, July 2025.
Abstract Distributed acoustic sensing (DAS) is an attractive solution for ocean‐bottom seismological instrumentation, providing dense and long‐range measurements of ground deformation along submarine fiber optic cables. By sensing a 145 km telecom cable in central Chile, we determined the sedimentary cover structure leveraging both surface wave ...
Clara Vernet, Alister Trabattoni, Marie Baillet, Martijn van den Ende, Diane Rivet   +4 more
wiley   +1 more source

Diurnal expansion and contraction of englacial fracture networks revealed by seismic shear wave splitting

Communications Earth & Environment, 2021
Daily variations in seismic S-wave anisotropy reveal the dynamic response of englacial fractures to changing meltwater supply, according to shear wave splitting measurements from a seismometer network on the Rhonegletscher, Switzerland.
Wojciech Gajek, Dominik Gräff, Sebastian Hellmann, Alan W. Rempel, Fabian Walter   +4 more
doaj   +1 more source