Results 1 to 10 of about 441,479 (240)

A strength inversion origin for non-volcanic tremor [PDF]

Nature Communications, 2022
Subduction plate boundaries have enigmatic seismic tremor that is often associated with surges in creep across these boundaries. Here, the authors use multiple approaches to show how blocks of weak rocks in a stronger matrix can explain both the ...
Paola Vannucchi, Alexander Clarke, Albert de Montserrat, Audrey Ougier-Simonin, Luca Aldega, Jason P. Morgan   +5 more
doaj   +8 more sources

Coupling Between Magmatic Degassing and Volcanic Tremor in Basaltic Volcanism [PDF]

Frontiers in Earth Science, 2018
Magmatic degassing, typically measured as SO2 flux, plays a fundamental role in controlling volcanic eruption style and is one of the key parameters used by volcano observatories to assess volcanic unrest and detect eruption precursors.
Giuseppe G. Salerno, Mike Burton, Giuseppe Di Grazia, Tommaso Caltabiano, Clive Oppenheimer   +4 more
doaj   +7 more sources

Energy threshold changes in volcanic activity at Mt. Etna (Italy) inferred from volcanic tremor [PDF]

Scientific Reports, 2022
From the 2010s on, pattern classification has proven an effective method for flagging alerts of volcano unrest before eruptive activity at Mt. Etna, Italy.
Horst Langer, Susanna Falsaperla, Salvatore Spampinato, Alfio Messina   +3 more
doaj   +3 more sources

Depth Migration of Seismovolcanic Tremor Sources Below the Klyuchevskoy Volcanic Group (Kamchatka) Determined From a Network-Based Analysis

Geophysical Research Letters, 2019
We present a method for automatic location of dominant sources of seismovolcanic tremor in 3‐D, based on the spatial coherence of the continuously recorded wavefield at a seismic network.
Julien de Rosny, Nikolai M. Shapiro, Léonard Seydoux   +2 more
exaly   +3 more sources

Locating hydrothermal fluid injection of the 2018 phreatic eruption at Kusatsu-Shirane volcano with volcanic tremor amplitude

Earth, Planets and Space, 2021
Kusatsu-Shirane volcano hosts numerous thermal springs, fumaroles, and the crater lake of Yugama. Hence, it has been a particular study field for hydrothermal systems and phreatic eruptions.
Taishi Yamada, Aika K. Kurokawa, Akihiko Terada, Wataru Kanda, Hideki Ueda, Hiroshi Aoyama, Takahiro Ohkura, Yasuo Ogawa, Toshikazu Tanada   +8 more
doaj   +2 more sources

Source dynamics of Ruapehu's 2022 volcanic unrest: insights from drumbeat seismicity, tremor, and crater lake signals. [PDF]

Bull Volcanol
Ruapehu, one of Aotearoa New Zealand’s most active andesitic volcanoes, experienced moderate to heightened volcanic unrest beginning March 2022. This included heightened volcanic tremor, the initiation of a new heating phase at the crater lake Te Wai ā ...
Bramwell LA, Illsley-Kemp F, Hughes EC, Butcher S, Lamb OD, Behr Y.   +5 more
europepmc   +2 more sources

How a non harmonic-like tremor at a volcanic lake could be caused by sustained wind: A case of study of Taupō volcano

Volcanica
Taupō volcano lies underneath the largest lake in New Zealand. It undergoes unrest roughly every ten years, has minor eruptions every few hundred years, and has supereruptions.
Henriette Bakkar Hindeleh, Martha Savage, Finnigan Illsley-Kemp, Eleanor R. H. Mestel   +3 more
doaj   +2 more sources

On data reduction methods for volcanic tremor characterization: the 2012 eruption of Copahue volcano, Southern Andes

Earth, Planets and Space, 2020
Improving the ability to detect and characterize long-duration volcanic tremor is crucial to understand the long-term dynamics and unrest of volcanic systems.
Ivan Melchor, Javier Almendros, Roberto Carniel, Kostas I. Konstantinou, Marcia Hantusch, Alberto Caselli   +5 more
doaj   +2 more sources

Volcanic eruption tremor from particle impacts and turbulence using conduit flow models

Seismica
The intensity of explosive volcanic eruptions is correlated with the amplitude of eruption tremor, a ubiquitously observed seismic signal during eruptions.
Katherine Coppess, Fredric Lam, Eric Dunham   +2 more
doaj   +2 more sources

A model for the hydrothermal tremor source of the Mefite d'Ansanto (Italy) CO₂ non-volcanic emissions in the intermediate frequency band (1-15 Hz). [PDF]

Sci Rep
In the Summer 2021 a seismic passive survey was carried out at Mefite d’Ansanto (Italy), well-known for the cold non-volcanic and lethal CO2 emissions.
Morabito S, Cusano P, Nardone L, Petrosino S.   +3 more
europepmc   +2 more sources