Results 111 to 120 of about 4,463,624 (383)

Insights on Hydrothermal‐Magmatic Interactions and Eruptive Processes at Poás Volcano (Costa Rica) From High‐Frequency Gas Monitoring and Drone Measurements

Geophysical Research Letters, 2019
Identification of unambiguous signals of volcanic unrest is crucial in hazard assessment. Processes leading to phreatic and phreatomagmatic eruptions remain poorly understood, inhibiting effective eruption forecasting.
J. M. Moor, J. Stix, G. Avard, C. Muller, Ernesto Corrales, J. A. Diaz, A. Alan, J. Brenes, J. F. Pacheco, A. Aiuppa, Tobias P. Fischer   +10 more
semanticscholar   +1 more source

Beyond Presumptions: Toward Mechanistic Clarity in Metal‐Free Carbon Catalysts for Electrochemical H2O2 Production via Data Science

Advanced Materials, EarlyView.
Metal‐free carbon catalysts enable the sustainable synthesis of hydrogen peroxide via two‐electron oxygen reduction; however, active site complexity continues to hinder reliable interpretation. This review critiques correlation‐based approaches and highlights the importance of orthogonal experimental designs, standardized catalyst passports ...
Dayu Zhu, Hsi‐wen Wu, Xiao Wang, Jie Zhang   +3 more
wiley   +1 more source

Etna International Training School of Geochemistry. Science meets Practice [PDF]

, 2019
Also this year, the “Etna International Training School of Geochemistry. Science meets practice” took place at Mt. Etna, now in its fourth edition.
Bitetto Marcello, Bobrowski Nicole, Brugnone FIlippo, Cabassi Jacopo, Calabrese Sergio, Cantarero Massimo, Capecchiacci Francesco, Consoli Salvatore, Daskalopoulou Kyriaki, Franco Italiano, Fuchs Christopher, Giammanco Salvatore, Giuffrida GIovanni, Ionescu Artur, Kuhn Jonas, Li Vigni Lorenza, Pecoraino Guendalina, Privitera Eugenio, Randazzo Luciana, Tamburello Giancarlo, Tassi Francesco, Venturi Stefania   +21 more
core   +1 more source

Volcanic Thunder From Explosive Eruptions at Bogoslof Volcano, Alaska

Geophysical Research Letters, 2018
Lightning often occurs during ash‐producing eruptive activity, and its detection is now being used in volcano monitoring for rapid alerts. We report on infrasonic and sonic recordings of the related, but previously undocumented, phenomenon of volcanic ...
Matthew M. Haney, Alexa R. Van Eaton, John J. Lyons, Rebecca L. Kramer, David Fee, Alexandra M. Iezzi   +5 more
doaj   +1 more source

Exploiting ground-based optical sensing technologies for volcanic gas surveillance

Annals of Geophysics, 2004
Measurements of volcanic gas composition and flux are crucial to probing and understanding a range of magmatic, hydrothermal and atmospheric interactions.
A. J. S. McGonigle, C. Oppenheimer
doaj   +1 more source

Probabilistic enhancement of the Failure Forecast Method using a stochastic differential equation and application to volcanic eruption forecasts

, 2018
We introduce a doubly stochastic method for performing material failure theory based forecasts of volcanic eruptions. The method enhances the well known Failure Forecast Method equation, introducing a new formulation similar to the Hull-White model in ...
Bevilacqua, Andrea, Bursik, Marcus, Neri, Augusto, Patra, Abani, Pitman, E. Bruce, Voight, Barry   +5 more
core   +1 more source

A Biochar‐Based Composite Hydrogel Microenvironment for Enhanced Biocatalysis

Advanced Materials, EarlyView.
This work presents the synthesis of a polyacrylamide hydrogel wherein biomass‐derived biochar is co‐encapsulated with the enzyme horseradish peroxidase (HRP). The resulting composite hydrogel possesses balanced electron‐rich and electron‐deficient domains, creating an optimal microenvironment that concentrates both hydrogen peroxide and phenol ...
Shengzhe Wang, Jingling Zhu, Weiyang Xue, Yuting Wen, Zhongxing Zhang, Xia Song, Yuan Yu, Chenglin Sun, Huangzhao Wei, Jun Li   +9 more
wiley   +1 more source

2021–2023 Unrest and Geodetic Observations at Askja Volcano, Iceland

Geophysical Research Letters
Unrest began in July 2021 at Askja volcano in the Northern Volcanic Zone (NVZ) of Iceland. Its most recent eruption, in 1961, was predominantly effusive and produced ∼0.1 km3 lava field. The last plinian eruption at Askja occurred in 1875.
Michelle M. Parks, Freysteinn Sigmundsson, Vincent Drouin, Sigrún Hreinsdóttir, Andrew Hooper, Yilin Yang, Benedikt G. Ófeigsson, Erik Sturkell, Ásta R. Hjartardóttir, Ronni Grapenthin, Halldór Geirsson, Elisa Trasatti, Sara Barsotti, Rikke Pedersen, Páll Einarsson, Bergrún A. Óladóttir, Hildur M. Friðriksdóttir   +16 more
doaj   +1 more source

Geomagnetic anomalies observed at volcano Popocatepetl, Mexico [PDF]

Advances in Geosciences, 2008
Results of the ULF geomagnetic monitoring of the volcano Popocatepetl (Mexico) and their analysis are summarized and presented for the period 2003–2006.
A. Kotsarenko, V. Grimalsky, R. Pérez Enríquez, V. Yutsis, S. Koshevaya, J. A. López Cruz-Abeyro, C. Valdez-Gonzalez, R. A. Villegas Cerón   +7 more
doaj  

The recent seismicity of Mt. Vesuvius: inference on seismogenic processes

Annals of Geophysics, 2013
We have analyzed the recent seismicity of Mt. Vesuvius, with particular emphasis on the period 1999-2012. Since 1972 continuous observations with electromagnetic seismometers allowed the compilation of a detailed earthquake catalogue for the station OVO.
Luca D’Auria, Antonietta M. Esposito, Domenico Lo Bascio, Patrizia Ricciolino, Flora Giudicepietro, Marcello Martini, Teresa Caputo, Walter De Cesare, Massimo Orazi, Rosario Peluso, Giovanni Scarpato, Ciro Buonocunto, Marco Capello, Antonio Caputo   +13 more
doaj   +1 more source