Article
Geochemistry & Geophysics
Francesco Lazari, Angela Castagna, Stefan Nielsen, Ashley Griffith, Giorgio Pennacchioni, Rodrigo Gomila, Phil Resor, Chiara Cornelio, Giulio Di Toro
Summary: The frictional power per unit area Q played a crucial role in controlling earthquake rupture nucleation, propagation, and arrest. However, determining Q using geophysical methods is challenging. In this study, we estimated Q dissipated on a fault patch exhumed from 7-9 km depth by combining theoretical models, experimental data, and geological constraints. Our findings suggest that the grain-scale roughness of the boundary between frictional melt and host rock decreases with increasing Q. The estimated Q values range from 4-60 MW m-2, which are at the lower end of previous estimates.(c) 2023 Elsevier B.V. All rights reserved.
EARTH AND PLANETARY SCIENCE LETTERS
(2023)
Article
Geochemistry & Geophysics
Natalya Zeinalova, Alik Ismail-Zadeh, Igor Tsepelev, Oleg Melnik, Frank Schilling
Summary: In this paper, a numerical study of lava dome growth at Volcan de Colima, Mexico is presented. The study reveals the significant role of cooling in long-term dome building, leading to the formation of a carapace and influencing the dynamics of the lava dome.
GEOPHYSICAL JOURNAL INTERNATIONAL
(2023)
Article
Engineering, Mechanical
Feng Du, Peng Ke, Ping Hong
Summary: This study presents a theoretical framework and a simplified analytical solution to unveil the friction mechanism when a curved skate sliding on ice. The theory is validated by experiments and the effects of various factors on the friction are revealed in detail. The study finds that the contribution of friction force from the ploughing deformation and the fluid friction are comparable, clarifying how the ploughing deformation and frictional melting regulate the friction during skating.
Article
Geosciences, Multidisciplinary
Alina V. Shevchenko, Viktor N. Dvigalo, Edgar U. Zorn, Magdalena S. Vassileva, Francesco Massimetti, Thomas R. Walter, Ilya Yu. Svirid, Sergey A. Chirkov, Alexey Yu. Ozerov, Valery A. Tsvetkov, Ilya A. Borisov
Summary: This study analyzes the recent activity of Shiveluch volcano, revealing the growth and collapse of the lava dome during volcanic eruptions and changes in structure and morphology during explosive events. The results demonstrate the importance of structural architecture and regional tectonic influences on volcanic behavior, providing insights into volcano constructive and destructive processes.
FRONTIERS IN EARTH SCIENCE
(2021)
Article
Geochemistry & Geophysics
Masaaki Obata, T. Mashimo, J. Ando, L. Chen, N. Kawai, Xun Liu, T. Yamamoto
Summary: Two kinds of shock compression experiments were conducted to study seismo-mechanochemical processes in forsteritic olivine. The experiments showed the generation of shear planes and local melting within a narrow zone along the shear plane. Microstructural observations revealed the comminution of olivine into nano-sized particles and partial melting. The power generated by friction was large enough to cause melting, occurring in a time scale <0.6 microseconds.
PHYSICS OF THE EARTH AND PLANETARY INTERIORS
(2023)
Article
Geochemistry & Geophysics
Yao WenMing, Zhou YongSheng, Zhang Lei, Ma Xi, Dai WenHao
Summary: This study conducted frictional experiments on pseudotachylyte gouges under both hydrothermal and dry conditions. The results showed that the friction coefficient of pseudotachylyte gouges increased with increasing temperature and was lower in dry samples compared to hydrothermal conditions. The slip stability of pseudotachylyte gouges exhibited velocity strengthening at lower temperatures and velocity weakening at higher temperatures. Loading rate also affected the stability of pseudotachylyte gouges. The presence of pseudotachylyte could increase the possibility of earthquake nucleation and promote the propagation of co-seismic dynamic rupture.
CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION
(2022)
Article
Geosciences, Multidisciplinary
Yannick Le Moigne, Glyn Williams-Jones, Nathalie Vigouroux, James K. Russell
Summary: Despite their short periods of eruptions, monogenetic volcanoes can pose significant risks to nearby populations. This study examines the eruption of Tseax volcano in 1700 CE, which resulted in the deaths of up to 2,000 people from the Nisga'a First Nation, making it Canada's worst natural disaster. By integrating field observations and data from Nisga'a oral and written histories, the researchers establish the chronology of the eruption and confirm the short duration and intense intensity recorded in volcanic products. The eruption was divided into two main periods, and the volcanic materials caused significant damage for several months.
FRONTIERS IN EARTH SCIENCE
(2022)
Article
Geosciences, Multidisciplinary
F. Di Fiore, A. Vona, A. Scarani, G. Giordano, C. Romano, D. Giordano, L. Caricchi, A. Martin Lorenzo, F. Rodriguez, B. Coldwell, P. Hernandez, M. Pankhurst
Summary: The 2021 Tajogaite eruption of Cumbre Vieja (La Palma, Spain) involved the emission of low viscosity lavas with high flowability. Experimental investigations revealed that the rheological evolution of the melt is controlled by disequilibrium crystallization and its timescale. These findings help us understand the exceptional flowing ability of the lavas.
GEOPHYSICAL RESEARCH LETTERS
(2023)
Article
Forestry
Jesus Eduardo Saenz-Ceja, Blanca Lizeth Saenz-Ceja, J. Trinidad Saenz-Reyes, Diego Rafael Perez-Salicrup
Summary: After the Paricutin volcano eruption, conifer trees rapidly established on the substrates created by the eruption. The four earliest established pine species became the most abundant and dominant. Tree establishment was not influenced by the distance from mature forests and exhibited a continuous pattern, unaffected by inter-annual climatic conditions.
Article
Geochemistry & Geophysics
Sejin Jung, Ji-Hoon Kang, Youngwoo Kil, Haemyeong Jung
Summary: The 5.5 magnitude earthquake in Pohang, South Korea in 2017 was an example of one of the largest triggered earthquakes at an enhanced geothermal system (EGS) site. The faults that ruptured in Pohang were not initially detected, but further study of fault rocks at the site revealed features indicative of fault gouge or breccia. Additionally, evidence of frictional melting during coseismic slip suggests a prior seismic event at the Pohang EGS site.
Article
Geosciences, Multidisciplinary
Yuya Ikenaga, Fukashi Maeno, Atsushi Yasuda
Summary: This study investigates the An'ei eruption of the Izu-Oshima volcano using geological data, historical documents, and chemical analyses. The results show that the transition of eruption style and magma type is closely related and can be explained by magma evacuation from multiple reservoirs. The study also reveals the existence of multiple magma reservoirs and pathways.
FRONTIERS IN EARTH SCIENCE
(2023)
Article
Environmental Sciences
Nikola Rogic, Giuseppe Bilotta, Gaetana Ganci, James O. Thompson, Annalisa Cappello, Hazel Rymer, Michael S. Ramsey, Fabrizio Ferrucci
Summary: Spaceborne detection and measurements of high-temperature thermal anomalies enable monitoring and forecasts of lava flow propagation. To address the deficit of field and laboratory-based emissivity data for inverse and forward modelling, the emissivity of 'a'a lava samples from the 2001 Mt. Etna eruption was measured. The results show that emissivity is wavelength dependent and increases non-linearly with cooling, revealing lower values than those typically assumed for basalts.
Article
Geochemistry & Geophysics
Michael P. Poland, Daniele Carbone, Matthew R. Patrick
Summary: This study utilized continuous gravimeters to monitor the eruption activity of Kilauea Volcano in 2018, providing detailed physical characteristics of lava lakes and data on lava withdrawal, emphasizing the importance of continuous gravity in monitoring active volcanoes.
EARTH AND PLANETARY SCIENCE LETTERS
(2021)
Article
Geochemistry & Geophysics
E. M. Conrad, N. Tisato, B. M. Carpenter, G. Di Toro
Summary: This study investigates the effects of frictional melt formation on the coseismic and interseismic strength of faults using a new energy-controlled rotary shear machine. The experiments reveal that the presence of melts modulates different stages of earthquakes and faulting. Monitoring acoustic emissions and vibrational waves during slip events can provide valuable insights into the underlying physical processes and help improve our understanding of earthquakes.
JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH
(2023)
Article
Engineering, Chemical
Jiahui Hao, Yanjie Li, Yi Liu, Jennifer S. Curtis, Yu Guo
Summary: This study examines the jamming phenomenon in shear flows of cylindrical particles with different size distributions and found that at the jamming volume fraction, stress fluctuation and granular temperature reach their maximum values, while the alignment degree of cylindrical particles reaches a minimum.
ADVANCED POWDER TECHNOLOGY
(2021)
Correction
Materials Science, Ceramics
Dirk Muller, Kai-Uwe Hess, Donald B. Dingwell
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2023)
Article
Geochemistry & Geophysics
Robert E. Anthony, Adam T. Ringler, Toshiro Tanimoto, Robin S. Matoza, Silvio De Angelis, David C. Wilson
Summary: Records of pressure variations on seismographs, previously considered as unwanted noise, have now become valuable for inverting for near-surface Earth structure with the help of collocated seismic and acoustic instrumentation. The eruption of the Hunga Tonga-Hunga Ha'apai volcano generated globally observed high-amplitude infrasound signals, allowing for the examination of acoustic-to-seismic coupling. The study shows that ground motion amplitudes are related to upper crust material properties and the analysis of this coupling could improve crustal structure models.
SEISMOLOGICAL RESEARCH LETTERS
(2023)
Article
Geochemistry & Geophysics
Ismael Vera Rodriguez, Marius P. Isken, Torsten Dahm, Oliver D. Lamb, Sin-Mei Wu, Sigridur Kristjansdottir, Kristin Jonsdottir, Pilar Sanchez-Pastor, John Clinton, Christopher Wollin, Alan F. Baird, Andreas Wuestefeld, Beat Booz, Eva P. S. Eibl, Sebastian Heimann, Bettina P. Goertz-Allmann, Philippe Jousset, Volker Oye, Vala Hjorleifsdottir, Anne Obermann
Summary: This work presents a study on the acoustic signals of a meteoroid in Iceland using large-N seismic and distributed acoustic sensing (DAS) observations. The dense data set allows for the identification of acoustic phases that are difficult to discriminate on sparser networks. With the trajectory parameters of one fragment estimated through a Bayesian inversion model, the meteoroid is classified as a slow meteoroid of asteroidal origin with an estimated energy of 4-40 GJ and a probable size on the order of centimeters, consistent with the main asteroid belt.
SEISMOLOGICAL RESEARCH LETTERS
(2023)
Article
Multidisciplinary Sciences
Anthony Lamur, Jackie E. E. Kendrick, Lauren N. N. Schaefer, Yan Lavallee, Ben M. M. Kennedy
Summary: This study investigates the damage accumulation and weakening caused by time-dependent creep and repeating stress oscillations in volcanic rocks. The results show that stress oscillations lead to more damage than constant loads, and repetitive stress oscillations can amplify the amount of damage, accentuating the weakening of the materials. This process may affect natural or engineered structures.
SCIENTIFIC REPORTS
(2023)
Article
Geochemistry & Geophysics
Anna Perttu, Jelle Assink, Alexa R. Van Eaton, Corentin Caudron, Chris Vagasky, Janine Krippner, Kathleen McKee, Silvio De Angelis, Brian Perttu, Benoit Taisne, Gert Lube
Summary: On January 12th, 2020, an eruption started at the Main Crater Lake of Taal Volcano in the Philippines. The eruption intensified throughout the day, producing volcanic lightning, ashfall, and a tall plume. The Philippine Institute of Volcanology and Seismology and the Tokyo Volcanic Ash Advisory Center provided detailed documentation of the events. The collected data from this eruption provides an opportunity to investigate the combination of remote sensing methods and local observations.
BULLETIN OF THE SEISMOLOGICAL SOCIETY OF AMERICA
(2023)
Article
Geochemistry & Geophysics
Vittorio Minio, Luciano Zuccarello, Silvio De Angelis, Giuseppe Di Grazia, Gilberto Saccorotti
Summary: Volcanic activity generates seismic and acoustic signals that offer valuable insights into magmatic processes. Networks and arrays of sensors are crucial for volcano monitoring. Analyzing the data collected by these instruments necessitates efficient workflows and specialized software.
SEISMOLOGICAL RESEARCH LETTERS
(2023)
Article
Materials Science, Ceramics
Dirk Mueller, Luiz Pereira, Kai-Uwe Hess, Donald B. Dingwell
Summary: This study determined the high temperature viscosity data for 14 sodium disilicate melts modified with equimolar additions of lanthanum oxides. The results show that the viscosity of the modified melts generally decreases at high temperatures, but increases slightly at lower temperatures for the heaviest lanthanides. The lanthanides exhibit a highly coherent behavior in reducing the viscosity, with the exception of Ce and Tm, which show anomalously stronger effects. The glass densities are also correlated with the atomic number, except for Ce and Tm samples.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2023)
Article
Multidisciplinary Sciences
Daniel Weidendorfer, Kai-Uwe Hess, Ruben M. Ruhekenya, Juergen E. K. Schawe, Martin C. Wilding, Donald B. Dingwell
Summary: This article presents the calorimetric measurements of the glass transition temperatures (Tg) of hydrous carbonate melts and investigates the effect of water content on the transition temperature. The study derives important parameters of hydrous carbonate melts and reveals strong interactions between water and carbonates.
PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY A-MATHEMATICAL PHYSICAL AND ENGINEERING SCIENCES
(2023)
Article
Multidisciplinary Sciences
M. Colombier, I. A. Ukstins, S. Tegtmeier, B. Scheu, S. J. Cronin, S. Thivet, J. Paredes-Marino, C. Cimarelli, K. -U. Hess, Taaniela Kula, Folauhola H. Latu'ila, D. B. Dingwell
Summary: The submarine eruption at Hunga volcano on 15 January 2022 was the most explosive volcanic eruption in 140 years. It involved intense interaction between magma and seawater, causing a volcanic jet to breach the sea surface and form a subaerial eruptive plume. The eruption injected a significant amount of sea salts into the upper atmosphere, potentially impacting climate.
SCIENTIFIC REPORTS
(2023)
Article
Multidisciplinary Sciences
Adrian Hornby, Esteban Gazel, Claire Bush, Kyle Dayton, Natalie Mahowald
Summary: Volcanic ash emissions have significant impacts on atmospheric processes, depositional ecosystems, human health, and global climate. However, there is a lack of datasets describing the constituent phases of ash that are relevant for atmospheric transport and widely distributed impacts. This study presents X-ray diffraction measurements on size-separated fractions of volcanic ash samples and characterizes changes in phase fractions with grain size, tectonic setting, and whole-rock SiO2. The results provide insights into the major crystalline phases and their proportions in volcanic ash, and contribute to a better understanding of the impact of explosive volcanism on the Earth system.
SCIENTIFIC REPORTS
(2023)
Article
Geochemistry & Geophysics
Ana S. Casas, Kai-Uwe Hess, James Badro, Michael Eitel, Donald B. Dingwell
Summary: The viscosity of molten Earth mantle has been determined for various redox states, showing a decreasing trend with increasing iron redox state. Additionally, an increase in glass transition temperatures with increasing melt depolymerisation is observed.
Article
Geochemistry & Geophysics
J. Weaver, A. Lamur, T. D. Lea, F. B. Wadsworth, J. E. Kendrick, J. Schauroth, Y. Lavallee
Summary: This study experimentally and theoretically investigates the evolution of permeable networks during sintering of hot volcanic systems. The results show the competition between vesiculation and diffusive outgassing, and suggest that classical sintering models must be modified to account for these processes.
EARTH AND PLANETARY SCIENCE LETTERS
(2023)
Article
Geosciences, Multidisciplinary
Mila Huebsch, Ulrich Kueppers, Guillaume Carazzo, Corrado Cimarelli, Kai-Uwe Hess, Adrian Hornby, Anne-Marie Lejeune, Audrey Michaud-Dubuy, Diego Perugini, Daniel Weller, Michael J. Heap, Donald B. Dingwell
Summary: This study examines the physical controls on the production of fine particles during volcanic eruptions. By analyzing samples from different eruption types of Mt. Pelee in Martinique, the researchers find that Pelean activity and Plinian eruptions exhibit different fragmentation efficiency behaviors. The findings can help quantitatively constrain the energetic conditions underlying different volcanic eruptions.
BULLETIN OF VOLCANOLOGY
(2023)
Article
Geochemistry & Geophysics
Yan Lavallee, Takahiro Miwa, James D. Ashworth, Paul A. Wallace, Jackie E. Kendrick, Rebecca Coats, Anthony Lamur, Adrian Hornby, Kai-Uwe Hess, Takeshi Matsushima, Setsuya Nakada, Hiroshi Shimizu, Bernhard Ruthensteiner, Hugh Tuffen
Summary: This study presents a high-resolution investigation on the permeability distribution of shear zones in a volcanic conduit. The results show that the marginal shear zone exhibits varying permeability along its width, with a highly sheared region having low permeability. The central shear zone, on the other hand, is characterized by enhanced permeability. These findings are important for understanding the changes in magma properties during ascent and eruption, as well as the control of eruption style.