Article
Geosciences, Multidisciplinary
Paul Segall, Kyle Anderson, Taiyi A. Wang
Summary: In 2018, Kilauea volcano erupted causing caldera collapse after a decade of basalt eruption. However, less than 2.5 years later, Kilauea erupted again. Analysis of magma surges and Global Positioning System data suggests that the pressure condition required to bring magma to the surface was met at the onset of the 2020 eruption.
GEOPHYSICAL RESEARCH LETTERS
(2022)
Article
Geochemistry & Geophysics
Francisco Caceres, Bettina Scheu, Mathieu Colombier, Kai-Uwe Hess, Yves Feisel, Bernhard Ruthensteiner, Donald B. Dingwell
Summary: Silicic magmas exhibit a wide range of eruptive styles between explosive and effusive, with transitions between these styles driven by factors such as degassing of magmatic water. Experimental investigation in natural rhyolite shows that microlites play a significant role in bubble nucleation, while phenocrysts enhance bubble coalescence and connectivity in low-crystallinity magma. These findings contribute to understanding the influence of crystalline phases on degassing processes in silicic magma ascent.
EARTH AND PLANETARY SCIENCE LETTERS
(2022)
Article
Geochemistry & Geophysics
Penny E. Wieser, Hector Lamadrid, John Maclennan, Marie Edmonds, Simon Matthews, Kayla Iacovino, Frances E. Jenner, Cheryl Gansecki, Frank Trusdell, R. L. Lee, Evgenia Ilyinskaya
Summary: The 2018 lower East Rift Zone eruption at Kilauea Volcano in Hawaii was a destructive event, allowing for the determination of magma storage reservoirs supplying the eruption through analysis of lava sampling and geodetic data. This study highlights the importance of direct measurements of melts and vapor bubbles in identifying magma storage reservoirs for volcanic eruptions.
GEOCHEMISTRY GEOPHYSICS GEOSYSTEMS
(2021)
Article
Geochemistry & Geophysics
Meredith Townsend
Summary: This study introduces a new model for surface deformation related to magma chamber evolution. Results indicate that surface velocities associated with crystallization and second boiling should not exceed 1 mm/yr unless magma cooling rate is substantially elevated. The surface response to magma injection depends on magma compressibility and the timescale of injection compared to the timescale for viscous relaxation.
EARTH AND PLANETARY SCIENCE LETTERS
(2022)
Article
Geochemistry & Geophysics
Michael O. Garcia, Aaron J. Pietruszka, Marc D. Norman, J. Michael Rhodes
Summary: This study provides a synthesis and update on the petrologic and geochemical evolution of lava erupted from Kilauea's Pu'u 'O'o eruption, which lasted over 35 years. The research shows the changes in crustal and mantle processes during the eruption, with new major element, trace element, and Sr isotope data presented for the period from 2010 to 2018, highlighting the importance of systematic temporal sampling during an active eruption.
Article
Geochemistry & Geophysics
Isoji Miyagi, Hideo Hoshizumi, Taichi Suda, Genji Saito, Yasuo Miyabuchi, Nobuo Geshi
Summary: This paper analyzes the chemical composition (including H2O and CO2) of matrix glass, melt inclusions in phenocrysts, and their host minerals in eruptive products from Aso caldera. It identifies a group of melt inclusions with lower potassium compared to previously reported high-K2O whole-rock compositions. Through a model, the paper explains the discrepancy and suggests that volcanic gas flux monitoring can be used as a "basalt usage meter" during the dormant period of caldera volcanoes.
JOURNAL OF PETROLOGY
(2023)
Article
Geochemistry & Geophysics
Zihan Wei, Zhipeng Qin, Jenny Suckale
Summary: This study investigates the relationship between volcanic activity and volatile transport. By integrating a multiscale conduit-flow model and a volatile-concentration model, the researchers compute synthetic profiles of volatile concentrations for different flow conditions and CO2 fluxing. The results suggest that magma mixing and CO2 fluxing leave distinct observational signatures, and tracking them jointly could provide better constraints on changes in conduit flow.
JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH
(2022)
Article
Geochemistry & Geophysics
G. Boudoire, G. Pasdeloup, F. Schiavi, N. Cluzel, V. Rafflin, F. Grassa, G. Giuffrida, M. Liuzzo, A. Harris, D. Laporte, A. L. Rizzo
Summary: Developing monitoring strategies in long-quiescent volcanic provinces is challenging due to the lack of recordable signals and experienced eruptive phenomenology. This study in the Massif Central (France) focuses on the Pavin's Group of Volcanoes and proposes an innovative approach to understand the gas evolution in the magmatic system. By analyzing fluid inclusions, the study reveals insights into magma degassing, magma differentiation, and the origin of gas emissions in the region.
Article
Multidisciplinary Sciences
Heather Winslow, Philipp Ruprecht, Helge M. Gonnermann, Patrick R. Phelps, Carolina Munoz-Saez, Francisco Delgado, Matthew Pritchard, Alvaro Amigo
Summary: Two distinct types of rare crystal-rich mafic enclaves have been identified in the rhyolite lava flow from the 2011-12 Cordon Caulle eruption. These enclaves, including coarse-crystalline and porphyritic types, have compositions that differ significantly from the rhyolite host. The presence of interstitial melt in the enclaves suggests a direct derivation of the crystal-poor rhyolite magma from the underlying basaltic magma mush, bypassing the typical magmatic differentiation process.
SCIENTIFIC REPORTS
(2022)
Article
Geosciences, Multidisciplinary
Yasuo Miyabuchi, Eiichi Sato
Summary: This study examines the dispersal and grain size characteristics of the deposits from the May 14, 2018 eruption of Shinmoedake volcano in southwestern Japan. The analysis combines field and meteorological data to understand the eruption sequence and the behavior of the plume. The study finds that the wind direction and altitude influenced the dispersal and grain size of the deposits, with different characteristics observed on the east and west sides of the main dispersal axis.
EARTH PLANETS AND SPACE
(2023)
Article
Geochemistry & Geophysics
Max S. Sharpe, Simon J. Barker, Shane M. Rooyakkers, Colin J. N. Wilson, Isabelle Chambefort, Michael C. Rowe, C. Ian Schipper, Bruce L. A. Charlier
Summary: The concentrations of sulfur, chlorine, and fluorine in volcanic eruptive materials can provide insights into geothermal fluid compositions, ore deposit formation, and volcanic eruption processes and impacts. By studying these concentrations in different host materials, we can decipher the origins and evolution of magmas.
CONTRIBUTIONS TO MINERALOGY AND PETROLOGY
(2022)
Article
Geosciences, Multidisciplinary
Mauro Rosi, Valerio Acocella, Raffaello Cioni, Francesca Bianco, Antonio Costa, Prospero De Martino, Guido Giordano, Salvatore Inguaggiato
Summary: A crucial aspect of managing a volcanic crisis is the ability of volcanologists to quickly detect an impending eruption. This study focuses on identifying different states of active volcanoes using monitoring data and highlights the importance of recognizing the state of impending eruption for timely forecasts. Applying this rationale to active volcanoes in densely populated areas demonstrates its feasibility and significance in eruption forecasting.
FRONTIERS IN EARTH SCIENCE
(2022)
Article
Geochemistry & Geophysics
Sean B. O'Donnell, James E. Gardner
Summary: This study analyzed the small eruptions before large silicic eruptions and the pyroclasts from these eruptions, suggesting that the differences between them may be caused by different magma ascent dynamics.
CONTRIBUTIONS TO MINERALOGY AND PETROLOGY
(2022)
Article
Geochemistry & Geophysics
A. Caracciolo, E. Bali, S. A. Halldorsson, G. H. Guofinnsson, M. Kahl, I. Poroardottira, G. L. Palmadottir, V. Silvestri
Summary: In this study, the eruptive history of the Reykjanes Peninsula in Iceland was analyzed, and it was found that recent eruptions may mark the beginning of a new eruptive episode. The plumbing configuration and timescales of pre-eruptive magmatic processes were also studied. The analysis of rock compositions and structures revealed likely eruption scenarios for possible future eruptions.
EARTH AND PLANETARY SCIENCE LETTERS
(2023)
Article
Geochemistry & Geophysics
Tushar Mittal, Jacob S. Jordan, Lise Retailleau, Francois Beauducel, Aline Peltier
Summary: This study introduces a new conceptual model combining previously studied models for geomechanical magma reservoirs and dyke-shaped conduits, along with a model for porous mush adjacent to a visco-elastic magma reservoir. The comparison with the submarine 2018 Mayotte eruption shows that a single magma reservoir cannot fully match the observed eruptive history, highlighting the importance of considering magmatic mushes in explaining long-lived basaltic eruptions.
EARTH AND PLANETARY SCIENCE LETTERS
(2022)