Article
Geosciences, Multidisciplinary
Alicja Caputa, Lukasz Rudzinski, Simone Cesca
Summary: Underground exploitation of georesources can lead to induced seismic activity, which poses a risk to mining operations. Monitoring of mining activity through a dedicated seismic network is crucial for safety. Different methods are used to estimate earthquake source mechanisms, with some relying on polarity and amplitude fitting of P-wave onsets, while more advanced techniques focus on fitting full waveforms and spectra.
FRONTIERS IN EARTH SCIENCE
(2021)
Article
Geochemistry & Geophysics
Gene A. Ichinose, Sean R. Ford, Robert J. Mellors
Summary: Combining rotational motions with translational displacements improves the inference of radiation patterns in MT inversions.
JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH
(2021)
Article
Chemistry, Multidisciplinary
Yao Yang, Anye Cao, Yaoqi Liu, Xianxi Bai, Zhenqian Yan, Songwei Wang, Changbin Wang
Summary: Strong mining tremors (SMTs) frequently occur in super-thick strata near the goaf when mining. The three consecutive SMTs in the Shilawusu Coal Mine caused production suspension for over 290 days, affected households, and threatened underground worker safety and production capacity. This study investigated the occurrence mechanism of SMTs in super-thick strata goaf mining and established a theoretical mechanics model to understand the phenomenon and prevention of SMT in coal mines.
APPLIED SCIENCES-BASEL
(2023)
Article
Geosciences, Multidisciplinary
Iwona Kudlacik, Anna Tyminska, Grzegorz Lizurek, Jan Kaplon, Jacek Paziewski
Summary: High-rate GNSS data can be used as a supplementary tool for monitoring the impact of low-magnitude anthropogenic earthquakes on infrastructure, especially when seismic data is lacking.
GEOMATICS NATURAL HAZARDS & RISK
(2023)
Article
Environmental Sciences
Naythan van Wyk, Andrew C. Eloka-Eboka, Elvis Fosso-Kankeu
Summary: Acid mine drainage (AMD) caused by the oxidation of sulphide minerals in mine waste is a global concern, and this study evaluated the acid-neutralising capabilities of different mine tailings and their potential use in preventing and treating AMD. The results showed that alkaline mine tailings have a high acid-neutralising capacity and can be used as pH neutralising cover materials.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Geosciences, Multidisciplinary
Boris Roesler, Seth Stein, Susan E. Hough
Summary: With advancements in technology, earthquake scientists can now utilize big data and open data-sharing to explore important seismic issues. However, it is important to recognize the differences between interpreted data products and raw data to avoid potential issues.
FRONTIERS IN EARTH SCIENCE
(2022)
Article
Geosciences, Multidisciplinary
Yifang Cheng, Xin Wang, Zhongwen Zhan, Yehuda Ben-Zion
Summary: The study found that some earthquakes in the 2019 Ridgecrest sequence exhibited considerable explosive isotropic components, likely due to high-frequency damage-related radiation and other local dilatational processes.
GEOPHYSICAL RESEARCH LETTERS
(2021)
Article
Engineering, Geological
Yaoqi Liu, Anye Cao, Changbin Wang, Xu Yang, Qiang Wang, Xianxi Bai
Summary: High-magnitude events (HMEs) in underground mines, such as rockbursts, can cause violent rock failures. This study aims to investigate the cluster properties of moment tensors (MTs) before HMEs and develop a prediction method. A seismic clustering method was proposed to analyze MTs and their decompositions. Results show that HMEs have different source mechanisms but are close in location. A refined cluster possibility index was proposed to identify abnormal risk zones, and a risk assessment index was developed to evaluate the degree of seismic event clusters. The study achieved a 60% accuracy in predicting HMEs.
ROCK MECHANICS AND ROCK ENGINEERING
(2023)
Article
Geochemistry & Geophysics
Amandine Amemoutou, Patricia Martinez-Garzon, Grzegorz Kwiatek, Justin L. Rubinstein, Marco Bohnhoff
Summary: The significant increase in seismicity rates in the USA over the past 10 years is attributed to the injection of wastewater from oil and gas production. A study on induced earthquakes in southern Kansas reveals that their source mechanisms are related to injection activity and local stress fields. The orientation of fault geometries in relation to the stress field show that small stress perturbations caused by water injection could lead to failure.
JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH
(2021)
Article
Geochemistry & Geophysics
Bin Luo, Ge Jin, Frantisek Stanek
Summary: Microseismic monitoring using fiber-optic distributed acoustic sensing (DAS) technology has improved acquisition of microseismic events with high spatial resolution and low cost. By analyzing mathematical expressions and generating synthetic DAS strain records, it is possible to better understand and characterize microseismic source parameters. Polarity sign patterns in the synthetic records are sensitive to source orientations and can be qualitatively matched to field data examples. The near-field signals detected by DAS have potential value in hydraulic fracture monitoring for reflecting the geomechanical response of unconventional reservoirs.
Article
Geosciences, Multidisciplinary
Hijrah Saputra, Wahyudi Wahyudi, Iman Suardi, Ade Anggraini, Wiwit Suryanto
Summary: This study investigates the source mechanisms of the 2006 Yogyakarta earthquake mainshock and aftershocks, revealing the spatial and temporal slip distributions during the seismic events and stress field variations around the tectonic area. The research also uncovers the presence of two distinct asperities in the fault slip distribution within the source region.
GEOSCIENCE LETTERS
(2021)
Article
Chemistry, Analytical
Ju Ma, Shuang Wu, Yuan Zhao, Guoyan Zhao
Summary: Precise stochastic approaches can quantitatively calculate source uncertainties and eliminate the influence of anisotropy on moment tensor inversion. Results show that anisotropy and noise have a minimal effect on fault plane rotation for a pure shear source. Complex sources are more sensitive to velocity models and full moment tensor solutions exhibit larger fault plane rotation than double couple solutions. Collaborative inversion improves fault plane solution accuracy and reduces spurious components.
Review
Chemistry, Multidisciplinary
Julie A. Besedin, Leadin S. Khudur, Pacian Netherway, Andrew S. Ball
Summary: Arsenic-contaminated gold mine waste is a global problem with significant risks to the ecosystem and community. Research is focusing on environmentally sustainable techniques, such as phytoremediation and soil amendments, to address this issue. Currently, fern species are commonly used for phytoremediation, but there is a need to identify native plants compatible with arid climates. Assessing the efficacy of soil amendments is crucial due to the toxicity of arsenic to plants.
APPLIED SCIENCES-BASEL
(2023)
Article
Environmental Studies
Kentse Sesele, Lochner Marais, Deidre van Rooyen
Summary: The study examines the social aspects of mine closure, highlighting the gendered impact of mining industry's tendency to address problems towards the end of a mine's life cycle. Recommendations include a stronger policy focus on the social consequences of mine closure for women at local and regional levels.
Article
Geosciences, Multidisciplinary
Ke Ma, Fuzhen Yuan, Hongbo Wang, Zhenghu Zhang, Xingye Sun, Yilin Peng, Haiyong Wang
Summary: This study investigated the response characteristics of key strata during the periodic weighting process in Dongjiahe coal mine using micro-seismic monitoring. Fracture types of key strata were identified through moment tensor inversion, revealing the fracture mechanism of roof key strata from a microscopic viewpoint. The results showed different concentrations of micro-seismic events along the dip direction, with various types of fractures occurring in front of and behind the working face. The findings provide a theoretical reference for strata behaviors and hazard risk assessment under similar conditions.
GEOMATICS NATURAL HAZARDS & RISK
(2021)
Article
Geosciences, Multidisciplinary
Jan Sileny, Josef Horalek
PHYSICS AND CHEMISTRY OF THE EARTH
(2016)
Article
Physics, Multidisciplinary
Zdenek Kalab, Jan Sileny, Marketa Lednicka
Article
Geochemistry & Geophysics
M. Petruzalek, Z. Jechumtalova, P. Kolar, P. Adamova, T. Svitek, J. Sileny, T. Lokajicek
JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH
(2018)
Article
Geochemistry & Geophysics
Petra Adamova, Jan Sileny
BULLETIN OF THE SEISMOLOGICAL SOCIETY OF AMERICA
(2013)
Article
Geochemistry & Geophysics
J. D. Pesicek, J. Sileny, S. G. Prejean, C. H. Thurber
GEOPHYSICAL JOURNAL INTERNATIONAL
(2012)
Article
Geochemistry & Geophysics
Josef Horalek, Jan Sileny
GEOPHYSICAL JOURNAL INTERNATIONAL
(2013)
Article
Geochemistry & Geophysics
Eva Stierle, Vaclav Vavrycuk, Jan Sileny, Marco Bohnhoff
GEOPHYSICAL JOURNAL INTERNATIONAL
(2014)
Article
Geochemistry & Geophysics
Z. Jechumtalova, J. Sileny, C-I Trifu
GEOPHYSICAL JOURNAL INTERNATIONAL
(2014)
Article
Engineering, Geological
M. Petruzalek, T. Lokajicek, T. Svitek, Z. Jechumtalova, P. Kolar, J. Sileny
ROCK MECHANICS AND ROCK ENGINEERING
(2019)
Article
Engineering, Geological
M. Petruzalek, Z. Jechumtalova, J. Sileny, P. Kolar, T. Svitek, T. Lokajicek, I Turkova, M. Kotrly, R. Onysko
INTERNATIONAL JOURNAL OF ROCK MECHANICS AND MINING SCIENCES
(2020)
Article
Multidisciplinary Sciences
Beata Orlecka-Sikora, Stanislaw Lasocki, Joanna Kocot, Tomasz Szepieniec, Jean Robert Grasso, Alexander Garcia-Aristizabal, Marc Schaming, Pawel Urban, Glenda Jones, Ian Stimpson, Savka Dineva, Piotr Salek, Konstantinos Leptokaropoulos, Grzegorz Lizurek, Dorota Olszewska, Jean Schmittbuhl, Grzegorz Kwiatek, Aglaja Blanke, Gilberto Saccarotti, Karolina Chodzinska, Lukasz Rudzinski, Izabela Dobrzycka, Grzegorz Mutke, Adam Baranski, Aleksandra Pierzyna, Elena Kozlovskaya, Jouni Nevalainen, Jannes Kinscher, Jan Sileny, Mariusz Sterzel, Szymon Cielesta, Tomas Fischer
Article
Geochemistry & Geophysics
Jan Sileny, Simone Cesca, Rami Hofstetter
Summary: The focal mechanism of an earthquake is a parameter that requires observations around the focus. Without such observations, only limited information about the rupturing process can be obtained, and the shear versus non-shear nature cannot be determined. In the case of weak seismic events, where data is limited, important features of the focal mechanism can still be retrieved under specific configurations.
SEISMOLOGICAL RESEARCH LETTERS
(2023)
Article
Geochemistry & Geophysics
Petr Kolar, Matej Petruzalek, Tomas Lokajicek, Jan Sileny, Zuzana Jechumtalova, Petra Adamova, Alena Bouskova
PURE AND APPLIED GEOPHYSICS
(2020)
Article
Geochemistry & Geophysics
Zuzana Jechumtalova, Jan Sileny, Jiri Malek
PURE AND APPLIED GEOPHYSICS
(2017)
Article
Geochemistry & Geophysics
Jan Sileny, Zuzana Jechumtalova, Catherine Dorbath
PURE AND APPLIED GEOPHYSICS
(2014)