Results 71 to 80 of about 4,496 (198)

Atomic clocks as a tool to monitor vertical surface motion [PDF]

open access: yes, 2015
Atomic clock technology is advancing rapidly, now reaching stabilities of $\Delta f/f \sim 10^{-18}$, which corresponds to resolving $1$ cm in equivalent geoid height over an integration timescale of about 7 hours.
Bondarescu, Mihai   +6 more
core   +1 more source

Basal Melting Variability of the Ross Ice Shelf From Mixing Ratios of Simulated Water Masses (1993–2018) and Potential Climatic Drivers

open access: yesJournal of Geophysical Research: Oceans, Volume 131, Issue 2, February 2026.
Abstract Several water masses circulate under the Ross Ice Shelf (RIS), the largest ice shelf in Antarctica, each causing basal melting with a specific spatio‐temporal pattern. To investigate these patterns and their variability, we applied a mixing ratio analysis to simulated water masses from a new numerical ocean model of the Ross Sea.
Enrico Pochini   +10 more
wiley   +1 more source

SBAS Analysis of Induced Ground Surface Deformation from Wastewater Injection in East Central Oklahoma, USA

open access: yesRemote Sensing, 2018
The state of Oklahoma has experienced a dramatic increase in the amount of measurable seismic activities over the last decade. The needs of a petroleum-driven world have led to increased production utilizing various technologies to reach energy reserves ...
Elizabeth Loesch, Vasit Sagan
doaj   +1 more source

Deciphering Okmok Volcano's restless years (2002-2005) [PDF]

open access: yes, 2015
Thesis (Ph.D.) University of Alaska Fairbanks, 2015Okmok Volcano is an active island-arc shield volcano located in the central Aleutian islands of Alaska. It is defined by a 10-km-diameter caldera that formed in two cataclysmic eruptions, the most recent
Reyes, Celso Guillermo
core  

Transpressional Rupture Cascade of the 2016 Mw 7.8 Kaikoura Earthquake, New Zealand [PDF]

open access: yes, 2018
Large earthquakes often do not occur on a simple planar fault but involve rupture of multiple geometrically complex faults. The 2016 M 7.8 Kaikoura earthquake, New Zealand, involved the rupture of at least 21 faults, propagating from southwest to ...
Ampuero, JP   +6 more
core   +1 more source

Retrieving Three‐Dimensional Deformation in Groundwater Pumping Areas Based on InSAR Data

open access: yesWater Resources Research, Volume 62, Issue 2, February 2026.
Abstract Monitoring three‐dimensional (3D) surface deformation in groundwater pumping areas remains a significant challenge, as conventional InSAR techniques are constrained by their limited sensitivity to north‐south displacement. This study develops an inversion approach—the Vertical Gradient‐Constrained Strain Model (VG‐SM3D)—that combines multi ...
Guangli Su   +4 more
wiley   +1 more source

3DBP-CS: Three-Dimensional Back Projection Combined with Compressive Sensing for Low-Altitude Array-InSAR Imaging

open access: yesJournal of Remote Sensing
Synthetic aperture radar (SAR) 3-dimensional (3D) imaging uses multichannel systems to acquire 3D ground object information, overcoming the limitations of traditional 2D imaging.
Yuqing Lin   +3 more
doaj   +1 more source

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

open access: yesGeophysical 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   +7 more
wiley   +1 more source

Distribution of slip from 11 M_w > 6 earthquakes in the northern Chile subduction zone [PDF]

open access: yes, 2006
We use interferometric synthetic aperture radar, GPS, and teleseismic data to constrain the relative location of coseismic slip from 11 earthquakes on the subduction interface in northern Chile (23°–25°S) between the years 1993 and 2000.
Ji, C., Pritchard, M. E., Simons, M.
core  

Geodetic Constraints on the 2014 M 6.0 South Napa Earthquake [PDF]

open access: yes, 2015
On 24 August 2014, the M 6.0 South Napa earthquake shook much of the San Francisco Bay area, leading to significant damage in the Napa Valley. The earthquake occurred in the vicinity of the West Napa fault (122.313° W, 38.22° N, 11.3 km), a mapped ...
Barnhart, W. D.   +7 more
core   +1 more source

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