Article
Engineering, Geological
Rashad Sawires, Jose A. Pelaez, Miguel A. Santoyo
Summary: An updated probabilistic seismic hazard analysis was conducted for Western Mexico, providing peak ground acceleration and spectral acceleration values for different site classes. The study identified the southwestern coast as the highest hazard area, which was confirmed by the recent Mw 7.6 earthquake on September 19, 2022. The results contribute to a better understanding of seismic hazard in the region and propose a new design response spectrum.
ENGINEERING GEOLOGY
(2023)
Article
Engineering, Civil
Hossein Sadighi, Esmail Badiei, Abbas Eslami Haghighat
Summary: In this paper, the horizontal seismic coefficient of the Nazloo landfill is determined using a two-step process. Firstly, a probabilistic seismic hazard analysis is conducted to identify active faults, historical earthquakes, and instrumental earthquakes within a specific radius of the site. The site design spectrum is then obtained using the seismic characteristics of the faults and attenuation equations. Secondly, artificial seismic records are generated and applied to the landfill using dynamic analysis to estimate its permanent displacement. The pseudostatic seismic coefficient is calculated through trial and error. The horizontal pseudostatic seismic coefficient is found to be a function of the landfill's geometry and material properties.
IRANIAN JOURNAL OF SCIENCE AND TECHNOLOGY-TRANSACTIONS OF CIVIL ENGINEERING
(2022)
Article
Chemistry, Multidisciplinary
Christino Boyke, Afif Navir Refani, Takashi Nagao
Summary: This study aims to propose site-specific rational earthquake ground motions (EGMs) for the seismic design of port facilities in Indonesia. By analyzing Indonesian EGM records and ground data, and conducting deconvolution analysis and seismic response analysis, EGMs at 144 port sites were obtained. The proposed EGMs significantly differ from the EGMs in the design code.
APPLIED SCIENCES-BASEL
(2022)
Article
Engineering, Geological
Vakhitkhan Alikhanovich Ismailov, Sharofiddin Ismatullayevich Yodgorov, Sherzod Botirovich Allayev, Timur Umarjonovich Mamarozikov, Shukhrat Bakhtiyorovich Avazov
Summary: This article discusses the seismic microzoning of Tashkent territory based on calculation methods, using peak ground accelerations (PGAs) at the free surface as the basis for seismic zoning. Calculations were performed using the STRATA program developed by the Pacific Seismotechnical Research Center, considering 36 seismic-geological models for the soil strata response to seismic impact. Seismic microzoning schemes for the city were presented based on earthquake probabilities with return periods of 500 years and 2500 years.
SOIL DYNAMICS AND EARTHQUAKE ENGINEERING
(2022)
Article
Engineering, Geological
Yan Zhang, Fabio Romanelli, Franco Vaccari, Antonella Peresan, Changsheng Jiang, Zhongliang Wu, Shanghua Gao, Vladimir G. Kossobokov, Giuliano F. Panza
Summary: This study conducted a first-order seismic zoning based on Neo-deterministic Seismic Hazard Assessment in the seismically active China Seismic Experimental Site area. The results indicated high seismic hazard in the region, particularly around main fault zones. This zoning findings may support preparedness actions and site-specific studies.
ENGINEERING GEOLOGY
(2021)
Article
Engineering, Geological
Yoon-Ah Kim, Hae-In Lee, Kil-Wan Ko, Tae-Hyuk Kwon
Summary: Earthquake-induced slope failure can cause significant damage to structures above and below the slope. This study investigates the amplification of acceleration within a slope during earthquakes using dynamic centrifuge tests and analytical modeling. The results show that the acceleration is concentrated at the crest and near the slope surface. Using the acceleration at these locations can provide better insight into slope stability analysis.
SOIL DYNAMICS AND EARTHQUAKE ENGINEERING
(2022)
Article
Construction & Building Technology
Moo-Won Hur, Tae-Won Park
Summary: Story-added type apartments have been introduced to address housing supply shortage in rapidly industrialized and urbanized areas. However, the infrastructure of old apartment buildings makes it difficult to introduce modern facilities. Applying housing technologies to existing older apartments can increase housing supply and resolve these issues.
Article
Mechanics
Nazmi Hasi, Latif Hasi, Naim Syla, Arber Zeqiraj
Summary: It is important to re-evaluate seismic hazard for Kosovo in order to make use of new methods and data available for more accurate assessment. This article's findings contribute to reducing seismic risk for Kosovo.
Article
Engineering, Civil
Hartanto Wibowo, Sri Sritharan
Summary: Vertical ground accelerations can have a significant impact on bridge superstructures, particularly in connections and bearing forces. However, current design practices do not sufficiently account for the effects of high vertical ground accelerations. This study investigates the response of steel bridge superstructures to large magnitude vertical ground accelerations and finds that the moment demands can be amplified by over 100% at certain locations.
ENGINEERING STRUCTURES
(2022)
Article
Engineering, Mechanical
M. Grigoriu, A. Radu
Summary: The study shows that fragilities based on IDA and MSA are unsatisfactory for moderate and large seismic events, are sensitive to parameters used, and may or may not improve with sample size. Additionally, the usefulness of optimization algorithms for selecting ground motion records is questionable.
PROBABILISTIC ENGINEERING MECHANICS
(2021)
Article
Geochemistry & Geophysics
Naveed Iqbal, Mudassir Masood, Motaz Alfarraj, Umair Bin Waheed
Summary: Wired geophones are impractical for large-scale seismic exploration in areas without infrastructure. A network of wireless geophones is proposed as an inexpensive solution. To overcome challenges in transmitting massive amounts of data, a compressive sensing method and a deep convolutional neural network (DCNN) for reconstruction are proposed. The system achieves energy-efficient sensing and transmission, and demonstrates superior compression gain and reconstruction quality compared to existing methods.
IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING
(2023)
Article
Engineering, Geological
Riccardo Conti, Giulia M. B. Viggiani
Summary: This work summarises recent research on the seismic behaviour of displacing or yielding retaining structures, which allows permanent displacements without failing during earthquakes. The activation of ductile plastic mechanisms is crucial for energy dissipation and must be properly identified for desired strength hierarchy. The critical acceleration plays a key role in the performance-based design of yielding retaining structures.
SOIL DYNAMICS AND EARTHQUAKE ENGINEERING
(2023)
Article
Engineering, Civil
Jian Ji, Wenliang Zhang, Tong Zhang, Jian Song
Summary: In this paper, an improved Newmark displacement model that considers the accumulation of dynamic pore water pressure (DPWP) in the soil caused by both vertical and horizontal ground motions is proposed. The seismic slope displacement analyses indicate that the weakening effect of slope yield acceleration caused by bidirectional earthquake excitation-induced DPWP is more obvious than when only considering the horizontal ground motion when the slip surface soils are in near-saturated state. The numerical results show that the seismic displacement model seldomly considering the effect of DPWP, or only considering the DPWP induced by horizontal ground motion, can significantly underestimate the displacement value when the slip surface soils are in a near-saturated state.
EARTHQUAKE ENGINEERING & STRUCTURAL DYNAMICS
(2023)
Article
Engineering, Geological
Rashad Sawires, Jose A. Pelaez, Miguel A. Santoyo
Summary: This study presents a deaggregation appraisal for 15 significant cities in Western Mexico, considering different oscillation periods, soil conditions, and return periods. The results show that nearby seismic sources contribute most to the seismic hazard for most cities, especially at lower periods. However, for cities far from the Middle America Trench, distant large-magnitude earthquakes contribute more to the seismic hazard, especially at larger spectral periods. Additionally, the study finds that soil conditions have little influence on the deaggregation results.
GEORISK-ASSESSMENT AND MANAGEMENT OF RISK FOR ENGINEERED SYSTEMS AND GEOHAZARDS
(2023)
Article
Metallurgy & Metallurgical Engineering
Ying-chao Wang, Yin Guo, Yu Qiu, Wen Jiang, Yuan-hai Li, Cheng Cheng
Summary: In this study, the FLAC(3D) software was used to construct a model of the surrounding rock-lining structure of a tunnel crossing a fault in Sichuan, China. The influence of fault width and dip angle on the dynamic response of the tunnel lining structure was studied, and the variation of displacement, internal force, and tunnel plastic zone was analyzed. The results showed that the shear effect is the most significant influence of the fault fracture zone on the tunnel. The larger the fault dip angle, the more favorable it is to the tunnel lining structure, while the larger the fault width, the larger the fault influence zone, which is unfavorable to the tunnel lining structure. These results can provide a theoretical basis for improving seismic measures when tunneling through faults.
JOURNAL OF CENTRAL SOUTH UNIVERSITY
(2023)
Article
Geochemistry & Geophysics
Jeanne L. Hardebeck, Andrea L. Llenos, Andrew J. Michael, Morgan T. Page, Nicholas van der Elst
SEISMOLOGICAL RESEARCH LETTERS
(2019)
Article
Multidisciplinary Sciences
Sarah E. Minson, Annemarie S. Baltay, Elizabeth S. Cochran, Thomas C. Hanks, Morgan T. Page, Sara K. McBride, Kevin R. Milner, Men-Andrin Meier
SCIENTIFIC REPORTS
(2019)
Article
Geochemistry & Geophysics
Sara K. McBride, Andrea L. Llenos, Morgan T. Page, Nicholas van der Elst
SEISMOLOGICAL RESEARCH LETTERS
(2020)
Article
Geochemistry & Geophysics
Andrew J. Michael, Sara K. McBride, Jeanne L. Hardebeck, Michael Barall, Eric Martinez, Morgan T. Page, Nicholas van der Elst, Edward H. Field, Kevin R. Milner, Anne M. Wein
SEISMOLOGICAL RESEARCH LETTERS
(2020)
Article
Geochemistry & Geophysics
Kevin R. Milner, Edward H. Field, William H. Savran, Morgan T. Page, Thomas H. Jordan
SEISMOLOGICAL RESEARCH LETTERS
(2020)
Editorial Material
Geochemistry & Geophysics
Matthew E. Pritchard, Richard M. Allen, Thorsten W. Becker, Mark D. Behn, Emily E. Brodsky, Roland Burgmann, Cindy Ebinger, Jeff T. Freymueller, Matt Gerstenberger, Bruce Haines, Yoshihiro Kaneko, Steve D. Jacobsen, Nate Lindsey, Jeff J. McGuire, Morgan Page, Sergio Ruiz, Maya Tolstoy, Laura Wallace, William R. Walter, William Wilcock, Harold Vincent
SEISMOLOGICAL RESEARCH LETTERS
(2020)
Article
Geochemistry & Geophysics
Susan E. Hough, Morgan Page, Leah Salditch, Molly M. Gallahue, Madeleine C. Lucas, James S. Neely, Seth Stein
Summary: This study revisits the three largest historical earthquakes in California and compares their estimated shaking distributions with predictions using modern ground-motion models and intensity conversion equations. The results suggest that the historical earthquake magnitudes in California may have been underestimated.
BULLETIN OF THE SEISMOLOGICAL SOCIETY OF AMERICA
(2021)
Article
Geochemistry & Geophysics
Edward H. Field, Kevin R. Milner, Morgan T. Page
Summary: This article introduces a procedure for constructing seismic hazard source models for interconnected fault systems with adjustable segmentation constraints, emphasizing the importance of generalization, simplification, and representing epistemic uncertainties. It addresses common concerns and misunderstandings associated with the third Uniform California Earthquake Rupture Forecast, and provides a general protocol for constructing such models.
BULLETIN OF THE SEISMOLOGICAL SOCIETY OF AMERICA
(2021)
Article
Geochemistry & Geophysics
Men-Andrin Meier, Jean-Paul Ampuero, Elizabeth Cochran, Morgan Page
Summary: Studies have shown biases and invalid estimates in predicting earthquake rupture, with potential statistically indistinguishable growth between small and large earthquakes. A weaker trend is apparent among events of comparable duration, but its significance cannot be resolved by current data.
GEOPHYSICAL JOURNAL INTERNATIONAL
(2021)
Article
Geochemistry & Geophysics
Egill Hauksson, Brian Olson, Alex Grant, Jennifer R. Andrews, Angela I. Chung, Susan E. Hough, Hiroo Kanamori, Sara K. McBride, Andrew J. Michael, Morgan Page, Zachary E. Ross, Deborah E. Smith, Sotiris Valkaniotis
Summary: The 2020 Lone Pine earthquake in eastern California was the largest earthquake in the region since the nineteenth century, causing complex seismotectonic effects and triggering rockfalls and liquefaction. Despite no surface rupture along the scarps from 1872, the earthquake led to notable impacts at high elevations and along the western edge of Owens Lake.
SEISMOLOGICAL RESEARCH LETTERS
(2021)
Editorial Material
Geochemistry & Geophysics
Santanu Baruah, Chandan Dey, Prachurjya Borthakur, G. Narahari Sastry, Andrew J. Michael
Summary: The IVWGST-2020 workshop aimed to inspire students and academics globally with quality lecture sessions amidst the COVID-19 pandemic. Over 1000 participants from 30 different countries attended lectures given by 15 eminent speakers through Microsoft Teams, facilitating direct interaction with geoscience pioneers and researchers worldwide.
SEISMOLOGICAL RESEARCH LETTERS
(2021)
Article
Engineering, Civil
Mark D. Petersen, Allison M. Shumway, Peter M. Powers, Morgan P. Moschetti, Andrea L. Llenos, Andrew J. Michael, Charles S. Mueller, Arthur D. Frankel, Sanaz Rezaeian, Kenneth S. Rukstales, Daniel E. McNamara, Paul G. Okubo, Yuehua Zeng, Kishor S. Jaiswal, Sean K. Ahdi, Jason M. Altekruse, Brian R. Shiro
Summary: The 2021 US National Seismic Hazard Model (NSHM) for the State of Hawaii has updated the previous assessment by incorporating new data and modeling techniques, providing more accurate forecasts for ground shaking in the region. The results show that there is a significant chance of slight or greater damaging ground motions across most of the island chain.
EARTHQUAKE SPECTRA
(2022)
Article
Geochemistry & Geophysics
Nicholas J. van der Elst, Jeanne L. Hardebeck, Andrew J. Michael, Sara K. McBride, Elizabeth Vanacore
Summary: This study evaluates the aftershock forecasts of the Puerto Rico earthquake made by the US Geological Survey (USGS) using the ETAS model. The results show that the ETAS-based forecast performs well overall and is a substantial improvement over the existing forecast models. However, there are limitations to the current model, particularly regarding nonstationarities in the aftershock magnitude distribution and model parameters throughout the evolving sequence.
SEISMOLOGICAL RESEARCH LETTERS
(2022)
Article
Geochemistry & Geophysics
Andrew J. Michael, Andrea L. Llenos
Summary: Standard approaches to seismic-hazard assessment assume random and independent earthquake occurrences. This study introduces an analytic method that allows for arbitrary distributions of earthquake occurrence, considering the clustering behavior. The study finds that the non-Poisson behavior has the greatest impact for high probabilities of exceedance, low-mean rates of occurrence, and multiple exceedances. This has important implications for various applications in engineering, insurance, and hazard assessment.
BULLETIN OF THE SEISMOLOGICAL SOCIETY OF AMERICA
(2022)
Article
Geochemistry & Geophysics
Morgan T. Page
Summary: The concern over multifault ruptures in the third edition of UCERF3 model has been raised, but the author argues that the rupture-length distribution matches empirical data and suggests improvements by adding more connectivity to the fault system. This improvement would enhance model fit with data, make the model less characteristic on the faults, potentially improve aftershock forecasts, and reduce sensitivity to inadequacies and unknowns in the modeled fault system.
BULLETIN OF THE SEISMOLOGICAL SOCIETY OF AMERICA
(2021)
