Results 81 to 90 of about 91,577 (233)

Spontaneous Transient Summit Uplift at Taftan Volcano (Makran Subduction Arc) Imaged Using an InSAR Common‐Mode Filtering Method

Geophysical Research Letters, Volume 52, Issue 19, 16 October 2025.
Abstract We unambiguously document unrest at Taftan volcano. Summit uplift was detected using Interferometric Synthetic Aperture Radar time series and its timing tightly constrained applying a new common mode filtering method. Uplift started and ended gradually lasting 10 months (July 2023 to May 2024).
Mohammadhossein Mohammadnia, Man Wai Yip, A. Alexander G. Webb, Pablo J. González   +3 more
wiley   +1 more source

Unveiling the First Impressions of the Wide‐Swath Altimetry SWOT Mission Over the Ganga River, India

Geophysical Research Letters, Volume 52, Issue 19, 16 October 2025.
Abstract The Surface Water and Ocean Topography (SWOT) mission offers novel global observations of river hydrodynamics, yet its performance across varied river morphologies remains understudied. We evaluate SWOT node and raster products over a ∼210 km stretch of the Ganga River, India, during the fast‐sampling phase, using GNSS‐based continuous ...
Pankaj R. Dhote, Ankit Agarwal, Adrien Paris, Gaurish Singhal, Praveen K. Thakur, Hind Oubanas, Daniel M. Moreira, Laetitia Gal, Vaibhav Garg, Pramod Kumar, Raghavendra P. Singh, Stephane Calmant   +11 more
wiley   +1 more source

Generation of Seismic-Related DC Electric Fields and Lithosphere-Atmosphere-Ionosphere Coupling

, 2013
This paper reviews modeling of the influence of earthquake (EQ) preparation processes on the ionosphere through the electric field and electric current occurring in the global atmosphere–ionosphere electric circuit.
V. Sorokin, M. Hayakawa
semanticscholar   +1 more source

Validation of a Global Geospace Model With a Systems Science Approach Based on Canonical Correlation Analysis

Geophysical Research Letters, Volume 52, Issue 19, 16 October 2025.
Abstract A systems science approach based on canonical correlation analysis (CCA) is applied as a new, behavioral way to validate global geospace models. The biggest novelty of the technique is that it validates models at a system level, whereby a side‐by‐side comparison is performed of CCA applied to a 30‐day observational and the corresponding ...
Gian Luca Delzanno, Brianna Isola, Christian Lao, Joseph E. Borovsky, Kareem Sorathia, Viacheslav G. Merkin, Oleksandr Koshkarov, Andrew McCubbin, Jeff Garretson, Harry Arnold, Dong Lin   +10 more
wiley   +1 more source

Magnetic Aspect Sensitivity of Nonspecular Meteor Trail Echoes

Geophysical Research Letters, Volume 52, Issue 19, 16 October 2025.
Abstract The ablation of micrometeoroids entering Earth's atmosphere leaves behind a hot, dense column of plasma between 80 and 120 km altitude. Sharp density gradients can drive the plasma unstable, leading to turbulence and waves at the same altitude, which are often observed as coherent radar echoes.
Alexander Q. Green, Meers M. Oppenheim
wiley   +1 more source

Mapping a Carrington Storm

Geophysical Research Letters, Volume 52, Issue 19, 16 October 2025.
Abstract A map is presented of median 1‐min‐resolution peak geoelectric‐field strength across the United States as would be induced by magnetic storms as intense as the 2 September 1859 Carrington storm. The map is constructed from two data sets: Magnetometer time series from 22 ground‐based observatories recording 40 magnetic storms, and surface ...
Jeffrey J. Love, Greg M. Lucas, Anna Kelbert, E. Joshua Rigler, Paul A. Bedrosian, Neesha R. Schnepf   +5 more
wiley   +1 more source

Electron Energization by Dispersive Alfvén Waves in the Cusp

Geophysical Research Letters, Volume 52, Issue 19, 16 October 2025.
Abstract The propagation of kinetic Alfvén waves (assumed sourced from intermittent dayside reconnection) is investigated with a gyrofluid‐kinetic electron model compared with Cluster observations. These observations reveal electron distributions that are preferentially field‐aligned or field‐opposed, with signatures that are unidirectional or ...
P. A. Damiano, A. J. Hull, C. C. Chaston, J. R. Johnson, Y. Lin   +4 more
wiley   +1 more source

Magnetic measurements in the stratosphere and their role in the studies of magnetic field of the Earth

Геофизический журнал, 2016
Listed non-exhaustive list of tasks stratospheric magnetic surveys, at which decision the use of gradient measurements of the geomagnetic field on board a stratospheric balloon increases the accuracy of the research field of nature.
Yu. P. Tsvetkov, S. V. Filippov, V. V. Ivanov, O. M. Brekhov   +3 more
doaj   +1 more source

Direct Kelvin‐Helmholtz Instability Detection at the Ionospheric E Region Electron Density

Geophysical Research Letters, Volume 52, Issue 19, 16 October 2025.
Abstract New high‐resolution measurements by Sanya incoherent scatter radar (ISR) employing a wide‐bandwidth chirp signal now enable spatiotemporal resolutions of 37.5 m and 50 s. We have applied these new capabilities for observations of Kelvin‐Helmholtz instability (KHI) dynamics in the low‐latitude ionosphere E region.
Junyi Wang, Xinan Yue, Yihui Cai, Feng Ding, Xu Zhou, Jorge L. Chau, David C. Fritts, Juha Vierinen, Alan Z. Liu   +8 more
wiley   +1 more source

Diurnal Variability of Submesoscale Chlorophyll‐a Fronts Revealed by Hourly Geostationary Satellite Observations

Geophysical Research Letters, Volume 52, Issue 19, 16 October 2025.
Abstract The detection of submesoscale fronts is critical for understanding physical‐biological interactions and ecosystem variability. This study characterizes the diurnal variability of chlorophyll‐a (Chl‐a) fronts using hourly data from the geostationary satellite GK‐2B/GOCI‐II in the East/Japan Sea.
Hye‐Jin Woo, Kyung‐Ae Park, Peter C. Cornillon   +2 more
wiley   +1 more source