Results 91 to 100 of about 1,334 (170)

Multi-instrument analysis of medium-scale travelling ionospheric disturbances generated by an intense tropospheric jet-front system with severe convection in Europe in August 2023

Journal of Space Weather and Space Climate
Tropospheric jet-front systems and intense convection are known to be potential sources of atmospheric gravity waves (AGWs), which can propagate upward.
Barta Veronika, Potuznikova Katerina, Knížová Petra Koucká, Chum Jaroslav, Mielich Jens, Guerra Marco, Buresova Dalia, Sivakandan Mani, Verhulst Tobias G. W., Berényi Kitti A., Altadill David, Segarra Antoni, Kouba Daniel, Mosna Zbysek, Buzás Attila, Spogli Luca, Urbář Jaroslav, de Paula Víctor, Ventriglia Vincenzo, Belehaki Anna   +19 more
doaj   +1 more source

A Dynamical System Analysis of Electric Field Fluctuations Inside Equatorial Plasma Bubbles: A Case Study Using CSES‐01 Observations

Geophysical Research Letters, Volume 53, Issue 4, 28 February 2026.
Abstract This study investigates the spectral and dynamic characteristics of turbulent fluctuations in the electric field within equatorial plasma bubbles using data from the Electric Field Detector aboard the China Seismo‐Electromagnetic Satellite‐01.
P. De Michelis, V. Quattrociocchi, T. Alberti, E. Papini, G. Consolini   +4 more
wiley   +1 more source

Vertical Land Motion and Human Exposure Across India's Coastal Regions

Geophysical Research Letters, Volume 53, Issue 4, 28 February 2026.
Abstract In India, over 200 million people live within 100 km of the coastline, and many reside in low‐lying areas exposed to increasing flood risks associated with sea‐level rise. However, the role of vertical land motion (VLM)—particularly land subsidence—in shaping this coastal exposure remains poorly quantified. Here we present the first assessment
Quantao Zhu, Pei‐Chin Wu, Meng (Matt) Wei, Estelle Chaussard   +3 more
wiley   +1 more source

Modelling and assessing ionospheric higher order terms for GNSS signals [PDF]

, 2015
High precision positioning and time transfer are required by a large number of scientific applications: seismic ground deformations, sea level monitoring or land survey applications require sub-centimeter precision in kinematic position; monitoring of ...
Aragón Àngel, Angela, Bergeot, Nicolas, Defraigne, Pascale, Hernández Pajares, Manuel, Prieto Cerdeira, Roberto   +4 more
core  

A Continuum of Slow Slip Events in the Cascadia Subduction Zone Illuminated by High‐Resolution Deep‐Learning Denoising

Geophysical Research Letters, Volume 53, Issue 3, 16 February 2026.
Abstract Slow, aseismic fault slip has emerged as a significant contributor to the seismic cycle. However, whether slow and fast slip arise from similar physical processes remains unresolved, due to detection biases affecting noisy surface measurements and the analysis of the source properties of slow slip.
Giuseppe Costantino, Mathilde Radiguet, Zaccaria El Yousfi, Anne Socquet   +3 more
wiley   +1 more source

Categorizing Characteristic Regions of High‐Latitude Scintillations Using a Combination of Isolation Forest and Neural Network Machine Learning Algorithms

Journal of Geophysical Research: Machine Learning and Computation, Volume 3, Issue 1, February 2026.
Abstract Global Positioning System (GPS) scintillations are radio signal fluctuations due to ionospheric structures or irregularities. In this work, we utilize scintillation data to identify the source region (auroral oval vs. polar cap) of a high latitude irregularity responsible for any given scintillation instance, using a combination of ML and deep
Chintan Thakrar, Nicolas Gachancipa, Kshitija Deshpande, Anna‐Marie Bals, Larry Paxton   +4 more
wiley   +1 more source

Applying Hpo Indices to Empirical Thermospheric Density Models During Geomagnetic Storms

Earth and Space Science, Volume 13, Issue 2, February 2026.
Abstract Accurate atmospheric drag modeling is essential for precise orbit determination and prediction of Low Earth Orbit satellites. A key component is the thermospheric density, typically estimated using empirical models driven by geomagnetic activity indices such as the 3‐hr Kp or ap.
Kemin Zhu, Jizhang Sang, Xianjie Li, Lei Liu, Yangbo Qian, Shengfu Xia   +5 more
wiley   +1 more source

The CuSPED Mission: CubeSat for GNSS Sounding of the Ionosphere-Plasmasphere Electron Density [PDF]

The CubeSat for GNSS Sounding of Ionosphere-Plasmasphere Electron Density (CuSPED) is a 3U CubeSat mission concept that has been developed in response to the NASA Heliophysics program's decadal science goal of the determining of the dynamics and coupling
Christian, John A., Gross, Jason N., Gu, Yu, Keesee, Amy M., Komjathy, Attila, Lightsey, E. Glenn, Pollock, Craig J., Scime, Earl   +7 more
core   +1 more source

First Detections of Ionospheric Plasma Density Irregularities from GOES Geostationary GPS Observations during Geomagnetic Storms

Atmosphere
In this study, we present the first results of detecting ionospheric irregularities using non-typical GPS observations recorded onboard the Geostationary Operational Environmental Satellites (GOES) mission operating at ~35,800 km altitude.
Iurii Cherniak, Irina Zakharenkova, Scott Gleason, Douglas Hunt   +3 more
doaj   +1 more source

GNSS total variometric approach: first demonstration of a tool for real-time tsunami genesis estimation. [PDF]

Sci Rep, 2021
Ravanelli M, Occhipinti G, Savastano G, Komjathy A, Shume EB, Crespi M.   +5 more
europepmc   +1 more source