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volcanoes

Photograph of a volcano erupting.
Posted inEditors' Vox

Dynamics of Volcanic Processes

by Olivier Roche, Yosuke Aoki, Nikolai Bagdassarov, Michael Heap, Sigrun Hreinsdottir, Qinghua Huang, Daniel Pastor-Galán, Michael Poland, Maria Sachpazi, Fang-Zhen Teng, Gregory P. Waite, Marie Edmonds, Paul Asimow, Minghua Zhang and Graziella Caprarelli 6 July 202220 September 2022

A new cross-journal special collection invites contributions on modern approaches used to investigate dynamics of volcanic processes.

Four satellite images showing pyroclastic material infill between 2014 and 2019.
Posted inEditors' Highlights

Volcanic Creation and Destruction of Temporary Tephra Storage

by Agnes Kontny 1 July 20225 June 2023

Pyroclastic density currents (PDCs) are a major threat during an explosive volcanic eruption. A new study shows that loose tephra accumulations on volcanic slopes tend to re-mobilize rapidly.

Two students from Syiah Kuala University deploy a node in a farmer’s field near the village of Mane, Aceh.
Posted inAGU News

Adventure Time

Heather Goss, AGU Publisher by Heather Goss 23 June 202215 November 2022

In our July issue, we tell the tales of Earth and space scientists as they venture into the field and lab to gather critical data.

A snow-covered mountain summit contains a smoking crater.
Posted inNews

Unlocking the Magmatic Secrets of Antarctica’s Mount Erebus

Jenessa Duncombe, Staff Writer by Jenessa Duncombe 22 June 202222 June 2022

Unprecedented images of Mount Erebus’s inner workings show the unique trappings of a CO2-rich rift volcano.

Images showing the ArchKalmag14k model output for Paris (France) compared to other geomagnetic field models..
Posted inEditors' Highlights

Time-Step Filtering in Holocene Global Magnetic Field Models

by Mark J. Dekkers 9 June 20229 May 2023

Through a local fixed time-step filter, global Holocene magnetic field models remain mathematically tractable refining our insight into field variability and improving archeological dating.

NASA卫星拍摄到南太平洋汤加火山
Posted inResearch Spotlights

汤加火山引发电离层扰动

by Jack Lee 3 June 202230 November 2022

汤加火山喷发产生了影响深远的电离层扰动,其中一次扰动的初始速度高达950米每秒。

Niveau du lac du Nyiragongo au cours du temps.
Posted inEditors' Highlights

Mesurer les oscillations d’un lac de lave depuis l’espace

by Michael Poland 19 May 202221 February 2023

Les images satellite permettent de mesurer les oscillations du lac de lave du Nyiragongo (RD Congo). Ces mesures renseignent sur la dynamique du volcan et aident à anticiper ses éruptions futures.

Lava lake activity over time at the Nyiragongo volcano.
Posted inEditors' Highlights

Tracking Lava Lake Levels at an African Volcano from Space

by Michael Poland 19 May 20222 August 2022

Satellite data from Nyiragongo Volcano, Democratic Republic of Congo, track changes in summit-crater lava levels that provide a window into eruption dynamics and aid in forecasting future activity.

Red-filter image of the Hunga Tonga–Hunga Ha‘apai eruption on 15 January 2022
Posted inResearch Spotlights

Modeling Atmospheric Waves from Hunga Tonga–Hunga Ha‘apai

Aaron Sidder, freelance science writer by Aaron Sidder 12 May 202230 November 2022

A shallow-water oceanic model showed agreement with satellite observations of atmospheric waves produced by the eruption of the underwater volcano.

On the left: a view of Pluto, as imaged by the New Horizons spacecraft. On the right: a close-up of an undulating region believed to have been formed by volcanoes that erupted icy material.
Posted inNews

Pluto’s Surface Was Recently Sculpted by Icy Volcanism

Katherine Kornei, Science Writer by Katherine Kornei 2 May 202217 February 2023

Geologically young regions of Pluto’s southern hemisphere were likely resurfaced by cryovolcanism, data from the New Horizons spacecraft reveal.

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