Results 101 to 110 of about 9,363 (210)

Auroral Effect on Mid‐Latitude Ionospheric Disturbances Over Europe During the Extreme Geomagnetic Storm of 10 May 2024

Space Weather, Volume 24, Issue 8, August 2026.
Abstract Large ionospheric disturbances were observed over Europe during the extreme geomagnetic storm on 10 May 2024. This study analyzes GNSS‐derived total electron content (TEC) and all‐sky imager data to investigate these disturbances. Pronounced TEC enhancements, irregularities, and strong gradients were confined to the auroral region above the ...
Grzegorz Nykiel, Joanna Kanska, Hiroatsu Sato, Shin‐ichiro Oyama, Kazuo Shiokawa, David R. Themens   +5 more
wiley   +1 more source

Model‐Based Analysis of Ionospheric TEC Disturbances Over China and Adjacent Regions During the May 2024 Super Geomagnetic Storm

Space Weather, Volume 24, Issue 8, August 2026.
Abstract This study uses observation data from multi‐constellation (GPS/GLONASS/Galileo/BeiDou) ground‐based Global Navigation Satellite Systems (GNSS) networks and a non‐integrated spherical harmonic function modeling methodology to develop an ionospheric Total Electron Content (TEC) model with high spatiotemporal resolution (1° × 1° in longitude and ...
Heng Xu, Wengeng Huang, Jiayue Yang, Hua Shen, Lei Zhang, Xin Wang   +5 more
wiley   +1 more source

Beyond temperature: The environmental constraints of high‐mountain microrefugia

Journal of Ecology, Volume 114, Issue 8, August 2026.
Cold spots in an alpine landscape often sit on poor, rocky, carbon‐low soils rather than well‐developed ground. As climate warms, alpine plants may find these cold refuges too harsh to colonize, since many depend on richer soils than nival and subnival species do.
Branislav Vrábel, Kryštof Chytrý, Dietmar Moser, Karl Hülber, Norbert Helm, Johannes Hausharter, Johannes Wessely, Andreas Kollert, Andreas Mayr, Harald Pauli, Moritz Fallgatter, William John Eden, Stefan Dullinger   +12 more
wiley   +1 more source

Assessing the Vulnerability of an Inuit Archaeological Site in a Changing Periglacial Environment: A Novel Multimethod Geophysical Approach in Arctic Geoarchaeology

Archaeometry, Volume 68, Issue 4, Page 620-632, August 2026.
ABSTRACT With northern regions warming at twice the global rate, assessing the state of archaeological sites in these areas is critically important. In this study, we used a multimethod geophysical approach (ERT, GPR, and EMI) to characterize the current geocryological conditions of an Inuit archaeological site on South Aulatsivik Island (Labrador ...
Rachel Labrie, Dominique Todisco, Najat Bhiry, Cécile Finco, Héloïg Barbel Le Page, Armelle Couillet   +5 more
wiley   +1 more source

From Static to Dynamic: Evaluating the Impact of Temporal Bias in Historical Street View Images for Cross‐View Geolocalization

Transactions in GIS, Volume 30, Issue 5, August 2026.
ABSTRACT Street View Images (SVIs) have become a valuable source of geotagged visual data, increasingly used in tasks such as assessing socioeconomic conditions, mapping accessibility, monitoring infrastructure, and supporting navigation and perception studies.
Yu Wang, Ana Basiri
wiley   +1 more source

Discrepancy in Satellite Altimetry Products Hinders Robust Retrieval of GIA Signals From Bedrock GNSS Data in Greenland

Geophysical Research Letters, Volume 53, Issue 14, 28 July 2026.
Abstract Isolating glacial isostatic adjustment (GIA) signals from Global Navigation Satellite System (GNSS) observations of vertical land motion (VLM) in Greenland requires removal of elastic solid Earth response to contemporary ice mass change. This elastic correction depends on ice‐surface elevation changes derived from satellite altimetry and firn ...
Holly Kyeore Han, Surendra Adhikari, Lambert Caron, Hui Gao, Parviz Ajourlou, Shfaqat Khan, Beata M. Csatho   +6 more
wiley   +1 more source

Global Navigation Satellite Systems (GNSS) - Attacks and Countermeasures

, 2008
Increasing numbers of mobile computing devices, user-portable, or embedded in vehicles, cargo containers, or the physical space, need to be aware of their location in order to provide a wide range of commercial services. Most often, mobile devices obtain their own location with the help of global navigation satellite systems (GNSS), integrating, for ...
Papadimitatos, Panos, Jovanovic, Aleksandar   +1 more
openaire   +1 more source

Tsunami Traveling Ionospheric Disturbances Triggered by the 29 July 2025 Mw 8.8 Kamchatka Earthquake Observed in Japan and Taiwan

Geophysical Research Letters, Volume 53, Issue 14, 28 July 2026.
Abstract The 29 July 2025 Mw 8.8 Kamchatka earthquake generated notable seismic and tsunami waves. The total electron content (TEC) derived by more than 1,400 ground‐based global navigation satellite system (GNSS) receiving stations in Japan and Taiwan is employed to examine the spatiotemporal evolution of seismic‐ and tsunami‐traveling ionospheric ...
Chun‐Yen Huang, Jann‐Yenq Liu, Chi‐Yen Lin, Tatsuhiro Yokoyama, Kenji Satake, Tien‐Chi Liu, Tung‐Yuan Hsiao, Charles Chien‐Hung Lin, Chia‐Hung Chen   +8 more
wiley   +1 more source

SWOT High‐Rate Raster Data Reveals Antarctic Ice Shelf Motion and Change in Response to Ocean and Ice Dynamics

Geophysical Research Letters, Volume 53, Issue 14, 28 July 2026.
Abstract The NASA/CNES Surface Water and Ocean Topography (SWOT) swath‐mapping radar altimetry satellite mission, launched in December 2022, provides repeat‐track coverage to about ±78.2° latitude every 21 days, sampling many of Antarctica's most dynamic ice shelves that play key roles in constraining mass loss from the grounded ice sheet ...
S. L. Howard, Z. S. Katz, L. Padman, M. R. Siegfried, E. Abrahams, T. M. Snow   +5 more
wiley   +1 more source

TRACERS Small‐Scale Field‐Aligned Currents and Intense GPS Amplitude and Phase Scintillations in the Nightside Auroral Region

Geophysical Research Letters, Volume 53, Issue 14, 28 July 2026.
Abstract We present conjugate observations of ionospheric small‐scale magnetic perturbations (dB) $(dB)$ and GPS scintillations from the Tandem Reconnection and Cusp Electrodynamics Reconnaissance Satellites (TRACERS) and the Canadian High Arctic Ionospheric Network (CHAIN) during a storm‐time substorm on 9 August 2025 in the nightside auroral region ...
Yangyang Shen, Robert J. Strangeway, Hao Cao, James M. Weygand, Jiashu Wu, Anthony McCaffrey, P. T. Jayachandran, Daniel Billett, Magnus F. Ivarsen, Christopher Watson, Sheng Tian, Marit Oieroset, David Miles   +12 more
wiley   +1 more source