Results 81 to 90 of about 808 (191)

Space Weather Effects From Moderate to Severe Geomagnetic Storms in October 2024 Over the Latin American Sector

Space Weather, Volume 24, Issue 6, June 2026.
Abstract This study presents a detailed case study of the ionospheric impacts of moderate (G2) and severe (G4) geomagnetic storms over the Latin American sector, with particular emphasis on the formation and suppression of equatorial plasma bubbles (EPBs).
C. S. Carmo, L. Dai, C. M. Wrasse, D. Barros, H. Takahashi, J. R. Costa, L. F. R. Vital, P. R. Jauer, C. De La Jara, A. J. Carrasco, C. A. O. B. Figueiredo, C. Wang, H. Li, Z. Liu   +13 more
wiley   +1 more source

Monitoring and Modeling the Rapid Evolution of Earth's Newest Volcanic Island: Hunga Tonga Hunga Ha'apai (Tonga) Using High Spatial Resolution Satellite Observations

Geophysical Research Letters, 2018
We have monitored a newly erupted volcanic island in the Kingdom of Tonga, unofficially known as Hunga Tonga Hunga Ha'apai, by means of relatively frequent high spatial resolution (~50 cm) satellite observations.
J. B. Garvin, D. A. Slayback, V. Ferrini, J. Frawley, C. Giguere, G. R. Asrar, K. Andersen   +6 more
doaj   +1 more source

Differentiating Solar Radiation Modification Field Experiments: Scale, Technical Characteristics, and Governance Implications

Earth's Future, Volume 14, Issue 5, May 2026.
Abstract Proposed solar radiation modification (SRM) field experiments are receiving growing scientific and policy attention, with several localized experiments having occurred or under development. While they may be critical for improving technical understanding and reducing uncertainties, SRM field experiments remain controversial and inadequately ...
B. H. Redmond Roche, I. Hernandez‐Galindo, A. Määttänen, J. C. Moore, O. Boucher, B. M. Dollner, A. Duffey, B. Gasparini, J. Henneberger, A. N. Koyun, D. McGrath, I. Steinke, J. Vinders, D. Visioni, P. J. Irvine   +14 more
wiley   +1 more source

Giant ionospheric density hole near the 2022 Hunga-Tonga volcanic eruption: multi-point satellite observations

, 2023
A giant ionospheric hole was simultaneously detected in the in situ measurements of FORMOSAT-7/COSMIC-2 (F7/C2), Ionospheric Connection Explorer (ICON), Swarm missions, and ground-based total electron content (TEC) by global navigation satellite system ...
Shih-Ping Chen, P. K. Rajesh, Marty Chou, Young-Sil Kwak, Charles Chien-Hung Lin, Jia-Ting Lin, Jong-Min Choi   +6 more
core   +1 more source

Hunga‐Tonga Volcano Plumbing System Inferred From Virtual Seismometer Approach

Geochemistry, Geophysics, Geosystems, Volume 27, Issue 5, May 2026.
Abstract We present a surface wave tomography application based on event‐pair interferometry to investigate local (∼100 km) mid‐ocean crustal structures, with a particular focus on imaging a potential crustal solidified intrusive complex in a region lacking seismic stations.
Taghi Shirzad, Marcelo Bianchi, Mohsen Kazemnia, Götz Bokelmann   +3 more
wiley   +1 more source

Large Ozone Hole in 2023 and the Hunga Tonga Volcanic Eruption

Pure and Applied Geophysics
AbstractPolar stratospheric chemistry is highly sensitive to changes in water vapor content and temperature. We identified an unusual behavior of water vapor and temperature in the southern polar winter stratosphere in 2023. The relationships between the Hunga-Tonga eruption injection of water vapor (detected in the tropics) and its transport to SH ...
Michal Kozubek, Peter Krizan, Sunil Kumar Ramatheerthan, Jan Laštovička   +3 more
openaire   +2 more sources

The 6–8 Aug 2019 eruption of ‘Volcano F’ in the Tofua Arc, Tonga [PDF]

, 2020
Highlights • We identify Volcano F as the source of the August 2019 pumice raft in Tonga. • Satellite and seismic data give constraints on the timing of the submarine eruption.
Petersen, Sven, Hannington, Mark D., Arculus, Richard J., Brandl, Philipp A., Grevemeyer, Ingo, Kopp, Heidrun, Brandl, Philipp A, Devey, C W, Hannington, Mark D, Arculus, Richard, Stewart, Margaret, Schmid, Florian, Augustin, Nico, Devey, Colin W.   +13 more
core   +1 more source

WACCM‐X Simulation of the Atmosphere From 1950 Through 2024 at an Hourly Resolution

Journal of Geophysical Research: Space Physics, Volume 131, Issue 5, May 2026.
Abstract Modeling of the upper atmosphere, namely the thermosphere and ionosphere, is becoming important for applications such as orbital propagation (including satellite collision avoidance), radio propagation for communications, radar and position, navigation and timing.
M. K. Brown, S. Elvidge, O. Allanson, D. R. Themens   +3 more
wiley   +1 more source

Forecasting of Volcanic–Flow Tsunamis Through Integrated Data From Laboratory Experiments and the 2019–2021 Stromboli Events, Italy

Journal of Geophysical Research: Oceans, Volume 131, Issue 5, May 2026.
Abstract Stromboli, Italy, is a unique volcano worldwide with near‐continuous eruptions monitored by a multi‐sensor network. Between 2019 and 2021, three events produced pyroclastic density currents along the Sciara del Fuoco that entered the sea and generated tsunamis, providing a unique data set linking flow dynamics to tsunami generation near the ...
A. Bougouin, R. Paris, C. Vaerewyck, O. Roche, E. M. Lane, G. Lacanna, M. Ripepe   +6 more
wiley   +1 more source

Tracking the Dynamics of human Colonisation and Adaptation in Central Vanuatu: Preliminary Results From Excavation and Survey at Pangpang, East Efate

Archaeology in Oceania, Volume 61, Issue 1, Page 221-236, April 2026.
ABSTRACT In October 2022 an extensive archaeological landscape was identified by staff of the Vanuatu Cultural Centre at Pangpang on the east coast of Efate Island in central Vanuatu. It included midden deposits on the banks of the Pangpang River near the sea at Forari Bay where Lapita and Early Erueti‐style pottery sherds were recovered.
Stuart Bedford, Iarawai Phillip, Lucas Sarvanu, Edson Willie, Stuart Hawkins, Robert Henderson, Frédérique Valentin, Siri Seoule, Emily Nutman, Phillip Parton   +9 more
wiley   +1 more source