Results 41 to 50 of about 14,357 (245)

Multi‐scale geophysical mapping of the brine and bedrock surfaces along the Dolores River, Paradox Valley, Colorado, December 2023

Near Surface Geophysics, Volume 24, Issue 1, Page 36-49, February 2026.
Abstract Total dissolved solids derived from salt dome–sourced brine in the underlying alluvial aquifer substantially increase with distance in the reach of the Dolores River that passes through Paradox Valley in southwestern Colorado. The area has been the site of salinity control operations since the 1990s to reduce salt loading to the downstream ...
Neil Terry, Alisa Mast, Andrea Creighton, Joel Homan, Connor Newman, Suzanne Paschke   +5 more
wiley   +1 more source

Seismic wave propagation in icy ocean worlds

, 2017
Seismology was developed on Earth and shaped our model of the Earth's interior over the 20th century. With the exception of the Philae lander, all in situ extraterrestrial seismological effort to date was limited to other terrestrial planets. All have in
Kedar, Sharon, Lorenz, Ralph, Nissen-Meyer, Tarje, Panning, Mark P., Stähler, Simon C., van Driel, Martin, Vance, Steve D.   +6 more
core   +1 more source

Seismic Velocity Variations, Ground Deformation and the Role of Fluids During a Low‐Energy Seismic Swarm

Geophysical Research Letters, Volume 53, Issue 2, 28 January 2026.
Abstract On March 9th $9\mathrm{th}$, 2023, three small earthquakes (3.8≤Mw≤4.5) $(3.8\le {M}_{w}\le 4.5)$ occurred near Umbertide (Central Italy), within 4 hours. Analyzing seismic ambient noise in the frequency band 0.1–1 Hz from six seismometers within 20 km of the Mw 4.5, we detect a significant drop in seismic velocity at the time of occurrence of
Eugenio Mandler, Lucia Zaccarelli, Massimo Nespoli, Maria Elina Belardinelli, Francesco Pintori, Enrico Serpelloni, Adriano Gualandi, Lauro Chiaraluce   +7 more
wiley   +1 more source

Tracking Subsurface Changes via Frequency Shifts in Volcanic Tremor Spectral Lines: Observations From Mt Etna

Geophysical Research Letters, Volume 53, Issue 2, 28 January 2026.
Abstract Episodes of volcanic tremor provide valuable insights into the dynamics of subsurface processes at active volcanoes. Previous studies have suggested that evolving tremor properties may relate to changes in the stress conditions of the plumbing system. However, a strong causative link has remained elusive.
A. S. Yates, S. Heuninck, A. Barajas, H. Bektas, C. Caudron, S. De Angelis, L. Zuccarello   +6 more
wiley   +1 more source

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

Ambient‐Noise Multicomponent Multimodal Dispersion Characteristics in Thick Sedimentary Basins

Geophysical Research Letters, Volume 53, Issue 1, 16 January 2026.
Abstract Ambient noise cross‐correlations enable the extraction of multimodal surface waves, yet resolving their complex dispersion characteristics is essential for robust subsurface imaging. Using dense array data from the North China Plain, we resolve multicomponent multimodal Rayleigh and Love wave dispersion with unprecedented detail.
Gongheng Zhang, Chunquan Yu, Zhengbo Li, Xiaofei Chen, Caiwang Shi, Xuping Feng, Fanchang Meng, Bo Li   +7 more
wiley   +1 more source

Implications for Oceanographic and Seafloor Geodetic Applications Due To Settling of Self‐Calibrating Bottom Pressure Recorders

Geophysical Research Letters, Volume 53, Issue 1, 16 January 2026.
Abstract Ocean bottom pressure recordings are a key observation for both ocean circulation and seafloor geodesy. New self‐calibrating instruments may solve a long‐time issue of instrument drift, allowing new high precision observations. However, instruments on the seafloor may settle over days to months, potentially contaminating results.
Nicholas Harmon, Catherine A. Rychert, Ben Moat, David Smeed, Eleanor Frajka‐Williams, Tillys Petit, Martin Walker, Paul Provost, Tina Thomas   +8 more
wiley   +1 more source

Low Frequency Tilt Seismology with a Precision Ground Rotation Sensor [PDF]

, 2017
We describe measurements of the rotational component of teleseismic surface waves using an inertial high-precision ground-rotation-sensor installed at the LIGO Hanford Observatory (LHO). The sensor has a noise floor of 0.4 nrad$/ \sqrt{\rm Hz}$ at 50 mHz
Bodin, P., Coughlin, M. W., Gundlach, J. H., Hagedorn, C. A., Kissel, J. S., Radkins, H., Ross, M. P., Shaffer, T. J., Venkateswara, K., Warner, J.   +9 more
core   +2 more sources

Deformation of the Upper Oceanic Crust in the Outer Rise of the Sumatra Subduction Zone: Insights From P‐ and Doubly Converted S‐Wave Arrivals on Downward Continued Streamer Data

Geophysical Research Letters, Volume 53, Issue 1, 16 January 2026.
Abstract The structure and properties of mature upper oceanic plates may evolve through mechanisms such as magmatism, hydrothermal circulation, and faulting. However, high‐resolution constraints, especially those involving both P‐ and S‐waves, remain scarce, limiting our ability to detect these processes and assess their impacts on crustal properties ...
Anne Bécel, Tanner Acquisto, Satish C. Singh, Hélène Carton   +3 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