Article
Multidisciplinary Sciences
Takeshi Nishimura, Kentaro Emoto, Hisashi Nakahara, Satoshi Miura, Mare Yamamoto, Shunsuke Sugimura, Ayumu Ishikawa, Tsunehisa Kimura
Summary: This study presents a novel method for source location determination of volcanic earthquakes and characterization of volcanic subsurfaces using a distributed acoustic sensing (DAS) system. By analyzing well-correlated waveforms and seismic amplitudes recorded along a fiber-optic cable, the hypocenters of volcanic earthquakes at Azuma volcano, Japan were successfully determined, showing a shallow depth beneath active volcanic areas. The spatial distribution of site amplification factors from coda waves of regional tectonic earthquakes is correlated with old lava flow distributions and volcano topography.
SCIENTIFIC REPORTS
(2021)
Article
Geosciences, Multidisciplinary
Ellen Gottschaemmer, Alicia Rohnacher, William Carter, Amelie Nuesse, Konstantin Drach, Silvio De Angelis, Yan Lavallee, Jackie E. Kendrick, Amilcar Roca, Pablo Castellanos, Gustavo Chigna, Andreas Rietbrock
Summary: Long-term instrumental monitoring of open-vent volcanoes is important for characterizing volcanic activity and its temporal changes. A multi-parametric study on the Santiaguito lava dome complex revealed various geophysical signals and associated processes during the effusive-explosive activity.
JOURNAL OF VOLCANOLOGY AND GEOTHERMAL RESEARCH
(2021)
Article
Geosciences, Multidisciplinary
Mariangela Sciotto, Placido Montalto
Summary: Investigating infrasonic signals is crucial for volcano monitoring and explosion dynamics studies. Proper detection of weak signals is essential for active volcano monitoring. The subspace-based detection technique shows promise in sensitively detecting lower energy events and can be a good compromise in tracking volcanic activity.
FRONTIERS IN EARTH SCIENCE
(2021)
Review
Geochemistry & Geophysics
Gabrielle Tepp, Robert P. Dziak
Summary: Many submarine eruptions have been recorded through seismo-acoustic signals since 1939, providing valuable information about the activity of hidden underwater volcanoes. Real-time monitoring and study of submarine eruptions have increased our understanding of deep-sea volcanoes, but there are still many questions that need to be addressed in order to fully understand and monitor submarine volcanoes.
JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH
(2021)
Article
Geochemistry & Geophysics
Mariangela Sciotto, Andrea Cannata, Giuseppe Di Grazia, Placido Montalto
Summary: This study analyzed volcanic tremor and LP events recorded at Mt. Etna and concluded that they are not caused by a common source mechanism.
PHYSICS OF THE EARTH AND PLANETARY INTERIORS
(2022)
Article
Engineering, Marine
Mohammad Heidarzadeh, Aditya Riadi Gusman, Takeo Ishibe, Ramtin Sabeti, Jadranka Sepic
Summary: The 15 January 2022 Tonga volcanic tsunami was a unique event where waves were created by a dual-mechanism generation process involving atmospheric pressure waves and eruption-induced water displacements. The study found that the maximum overall coastal tide gauge amplitudes ranged from 4.2 to 148.8 cm, while DARTs recorded maximum amplitudes of 3.6 to 21.4 cm.
Article
Geochemistry & Geophysics
Jean Soubestre, Bernard Chouet, Phillip Dawson
Summary: The volcanic tremor occurring at the beginning of the 2018 Kilauea eruption is characterized by long-period tremor and gliding tremor, attributed to radiation from a shallow hydrothermal system and the evolution of magma within a dike impacted by repeated roof collapses. Models suggest a decrease in gas volume fraction and bubble number density in the magma, leading to quasi to fully degassed magma by May 26.
JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH
(2021)
Article
Geosciences, Multidisciplinary
Guoming Liu, Chenyu Li, Zhigang Peng, Yinan Liu, Yu Zhang, Dongyang Liu, Maoliang Zhang, Bo Pan
Summary: Changbaishan volcano, one of the most active intraplate volcanoes in East Asia, experienced unrest from 2002 to 2005, triggering seismic swarms, long-period events, and harmonic-spectra events, indicating magma movement. Research suggests that the Wangqing deep-focus earthquake may have caused the volcano's unrest and potentially triggered bubble excitation in the mid-crust magma system.
FRONTIERS IN EARTH SCIENCE
(2021)
Article
Geochemistry & Geophysics
B. Steinke, A. D. Jolly, R. Carniel, D. E. Dempsey, S. J. Cronin
Summary: This study presents an algorithm based on Self-Organizing Maps (SOM) and k-means clustering to recognize patterns in tremor time series recorded at Whakaari/White Island volcano in New Zealand. The algorithm can be applied to different volcanic settings by adjusting the classifier. Hyperparameters are evaluated statistically to determine the ideal SOM parameters. The study categorizes the seismic time series into regimes representing different volcanic states during recent unrest episodes, and the classification results show a clear separation between background regimes and those representing elevated levels of unrest.
JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH
(2023)
Review
Environmental Sciences
K. M. Bisson, S. Gasso, N. Mahowald, S. Wagner, B. Koffman, S. A. Carn, S. Deutsch, E. Gazel, S. Kramer, N. Krotkov, C. Mitchell, M. E. Pritchard, K. Stamieszkin, C. Wilson
Summary: Volcanic eruptions have significant impacts on inhabited coastal environments and also contribute to climate and biogeochemical cycles. Current research on volcanic ash in the ocean primarily focuses on its effect on phytoplankton, particularly chlorophyll-a concentration. However, many fundamental questions regarding how volcanic ash deposition affects phytoplankton growth and community composition remain unanswered. This study proposes a multidisciplinary approach to monitoring volcanic eruptions near ocean ecosystems using satellite technology, with a focus on ash characteristics and geochemistry in seawater. The ultimate goal is to gain a better understanding of the impacts of volcanic eruptions on marine ecosystems and address societal concerns beyond chlorophyll-a measurements.
REMOTE SENSING OF ENVIRONMENT
(2023)
Article
Geosciences, Multidisciplinary
Leonardo van der Laat, Mauricio M. Mora, Javier Fco Pacheco, Philippe Lesage, Esteban Meneses
Summary: This paper investigates the seismic records of the Turrialba volcano to identify precursory signals and understand the volcanic evolution. The long-term analysis reveals decreases in tremor amplitude and SO2 flux prior to eruptions. Volcano-tectonic seismicity suggests magma migration from Irazu volcano to Turrialba volcano, while harmonic tremor and tonal seismic signals serve as short-term precursors. The sealing and rupture of conduits gradually lead to eruptions. This seismic characterization provides valuable insights for monitoring and risk assessment.
JOURNAL OF VOLCANOLOGY AND GEOTHERMAL RESEARCH
(2022)
Article
Geosciences, Multidisciplinary
Miriam Christina Reiss, Francesco Massimetti, Amani S. Laizer, Adele Campus, Georg Ruempker, Emmanuel O. Kazimoto
Summary: This study analyzes volcanic tremor from Oldoinyo Lengai volcano in Tanzania and reveals the observations of seismo-acoustic tremor caused by carbonatitic eruptions. The researchers characterize the tremor by analyzing its seismic amplitude, duration, recurrence, dominant seismic frequency, and harmonics. They find that the tremor is highly variable and may be influenced by various time-dependent mechanisms. The study also compares seismic-acoustic data with satellite Infrared thermal data to infer different volcanic activity styles throughout the year.
JOURNAL OF VOLCANOLOGY AND GEOTHERMAL RESEARCH
(2023)
Article
Geosciences, Multidisciplinary
Stuart R. Mead, Jonathan Procter, Gabor Kereszturi
Summary: The use of mass flow simulations in volcanic hazard zonation and mapping is limited by model complexity and uncertainties, leading to moderate accuracy in model performance assessments. Different approaches, such as fuzzy set approach, can improve targeted performance metrics but may also result in trade-offs and reduction in resolution.
NATURAL HAZARDS AND EARTH SYSTEM SCIENCES
(2021)
Article
Geochemistry & Geophysics
Kevin F. Lally, Jacqueline Caplan-Auerbach, John A. Power
Summary: Tanaga Island has four stratovolcanoes, with only Tanaga having a confirmed record of historical eruptive activity. The study uses seismic relocations to gain insight into volcanic and tectonic activity in the region. The results show that volcanic activity is relatively rare compared to tectonic activity.
GEOCHEMISTRY GEOPHYSICS GEOSYSTEMS
(2023)
Review
Multidisciplinary Sciences
Juliet Biggs, Atalay Ayele, Tobias P. Fischer, Karen Fontijn, William Hutchison, Emmanuel Kazimoto, Kathy Whaler, Tim J. Wright
Summary: New observations of volcanic and magmatic activity in Africa are reshaping our understanding of continental rifting and highlighting the associated hazards. Despite efforts to shift from crisis response to reducing disaster risks, limited capacity in sub-Saharan Africa hinders effective mitigation of geohazards.
NATURE COMMUNICATIONS
(2021)
Article
Geochemistry & Geophysics
Raul R. Castro, Lenin Avila-Barrientos
JOURNAL OF SEISMOLOGY
(2015)
Article
Geosciences, Multidisciplinary
L. Avila-Barrientos, F. R. Zuniga, Q. Rodriguez-Perez, M. Guzman-Speziale
JOURNAL OF SOUTH AMERICAN EARTH SCIENCES
(2015)
Article
Geochemistry & Geophysics
F. A. Nava, V. H. Marquez-Ramirez, F. R. Zuniga, L. Avila-Barrientos, C. B. Quinteros
JOURNAL OF SEISMOLOGY
(2017)
Article
Geochemistry & Geophysics
F. A. Nava, L. Avila-Barrientos, V. H. Marquez-Ramirez, I. Torres, F. R. Zuniga
JOURNAL OF SEISMOLOGY
(2018)
Article
Geosciences, Multidisciplinary
Lenin Avila-Barrientos, Carlos Valdes-Gonzalez, David A. Novelo-Casanova
Article
Geosciences, Multidisciplinary
Lenin Avila-Barrientos, Enrique Cabral-Cano, F. Alejandro Nava Pichardo, Carlos E. Reinoza, Luis Salazar-Tlaczani, Enrique Fernandez-Torres
Summary: Ceboruco volcano in western Mexico is considered one of the five most hazardous volcanoes in the country, with approximately 32,927 people residing within a 10 km radius. Two permanent GNSS stations were installed in 2018 to monitor surface deformation and have shown periods of small-amplitude inflation and deflation of the volcanic edifice.
JOURNAL OF VOLCANOLOGY AND GEOTHERMAL RESEARCH
(2021)
Article
Geosciences, Multidisciplinary
Lenin Avila-Barrientos, Luis A. Yegres-Herrera, Hortencia Flores-Estrella, Antonio Gonzalez-Fernandez
Summary: This study evaluates the subsoil conditions at La Reforma caldera, located inside the Tres Virgenes Volcanic Complex in Baja California Sur, Mexico, using the Horizontal to Vertical Spectral Ratios (HVSR) method. The spatial distribution of dominant frequencies exhibits a complex pattern, possibly due to the heterogeneities of the zone. The study also reveals significant contrast between V-P and V-S, indicating the presence of water-saturated material.
JOURNAL OF APPLIED GEOPHYSICS
(2022)
Article
Geochemistry & Geophysics
Hortencia Flores-Estrella, Lenin Avila-Barrientos, Hector Gonzalez-Huizar
Summary: On March 11, 2021, a strong signal was recorded by seismic stations, which was not associated with any earthquakes. This anomalous atmospheric activity caused vibrations and rumbling in Ensenada, Mexico. The study analyzes a multiparameter dataset and finds that the atmospheric perturbation wave was strong enough to be recorded by seismic stations within an 80 km area and affect meteorological parameters.
Article
Geosciences, Multidisciplinary
Lenin Avila-Barrientos, Luis A. Yegres-Herrera, Hortencia Flores-Estrella
Summary: This paragraph describes the damage caused by several landslides on highway 1D in Baja California, Mexico, and proposes the use of seismic noise analysis for subsurface characterization in this region.
Article
Geochemistry & Geophysics
Lenin Avila-Barrientos, F. Alejandro Nava Pichardo
GEOFISICA INTERNACIONAL
(2020)
