Article
Engineering, Geological
Lana Todorovic, Vitor Silva
Summary: A non-parametric model using machine learning was developed to predict liquefaction occurrence, and its performance was evaluated by comparing the area under ROC curve and Brier score with existing models. The proposed model was applied to assess liquefaction occurrence for historical events and hypothetical scenarios in Montenegro and Albania.
SOIL DYNAMICS AND EARTHQUAKE ENGINEERING
(2022)
Article
Engineering, Geological
Adriana Pacifico, Eugenio Chioccarelli, Iunio Iervolino
Summary: The project aims to evaluate the seismic reliability of buildings designed according to the current Italian building code and derive national seismic risk maps for Italy. The study shows that the failure rates of structures vary significantly with the increasing hazard of the sites and alternative hazard models have limited impact on the failure rates.
SOIL DYNAMICS AND EARTHQUAKE ENGINEERING
(2022)
Article
Engineering, Geological
Naida Ademovic, Vedad Demir, Snjezana Cvijic-Amulic, Jiri Malek, Ivan Prachar, Jiri Vackar
Summary: The first generation of probabilistic seismic hazard maps of Bosnia and Herzegovina combines two seismotectonic models and presents seismic hazard according to different return periods, making the design of earthquake-resistant buildings more accurate and reliable.
SOIL DYNAMICS AND EARTHQUAKE ENGINEERING
(2021)
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, 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
Mohammad Talebi, Mehdi Zare, Ehsan Noroozinejad Farsangi, Mohammad Reza Soghrat, Vahid Maleki, Shamseddin Esmaeili
Summary: This study aims to provide risk-targeted seismic design maps and hazard maps for the Iranian plateau using the EMME model. By utilizing rational parameters, uniform seismic risk maps for different intensity measures were obtained. The study's outcome can contribute to a more reliable seismic design of building structures through the national seismic code revision.
SOIL DYNAMICS AND EARTHQUAKE ENGINEERING
(2021)
Article
Engineering, Geological
Sebastian Arango-Serna, Mauricio Herrera, Alejandro Cruz, Eimar Sandoval, Peter Thomson, Christian Ledezma
Summary: The study proposed a shear strain model to estimate maximum surface layer shear strain during earthquakes in potentially liquefiable sites. Experimental verification showed the model's effectiveness under specific conditions for predicting potential liquefaction issues.
SOIL DYNAMICS AND EARTHQUAKE ENGINEERING
(2021)
Article
Engineering, Geological
Ryan A. Rasanen, Brett W. Maurer
Summary: This study presents probabilistic seismic-source inversions of the 1886 Charleston earthquake using liquefaction evidence and historical intensity reports. The results do not strongly support the hypothesized Woodstock Fault but generally uphold the magnitude distribution adopted by the U.S. National Seismic Hazard Model Project. The inversion methodology used in this study can be applied to any seismic zone and coseismic response.
ENGINEERING GEOLOGY
(2023)
Article
Geochemistry & Geophysics
Ahmed Deif, Adel M. E. Mohamed, Issa El-Hussain, Yousuf Al-Shijbi, Sherif El-Hady, Zaid Al Habsi
Summary: The study conducted a site-specific probabilistic seismic hazard assessment in the area of special economic zone authority of Duqm, using a logic-tree algorithm to study the influence of uncertainties on seismic hazard and assessing the effects of local geology and soil on seismic ground motion.
JOURNAL OF GEOPHYSICS AND ENGINEERING
(2021)
Article
Geochemistry & Geophysics
Sepideh Pajang, Nadaya Cubas, Jean Letouzey, Laetitia Le Pourhiet, Seyedmohsen Seyedali, Marc Fournier, Philippe Agard, Mohammad Mahdi Khatib, Mahmoudreza Heyhat, Mohammad Mokhtari
Summary: The study reveals the largely unconstrained seismic potential in the Western Makran region through mechanical modeling and structural mapping analysis. The area is influenced by multiple active fault zones, with higher seismic risk particularly in the eastern domain.
EARTH AND PLANETARY SCIENCE LETTERS
(2021)
Article
Engineering, Civil
Ryan A. Rasanen, Brett W. Maurer
Summary: In regions with infrequent moderate-to-large earthquakes, historical earthquake catalogs may not be sufficient for seismic-hazard analyses. This article proposes a new framework to probabilistically determine seismic-source parameters from paleoliquefaction evidence. The framework has the potential to provide valuable insights in enigmatic seismic zones globally.
EARTHQUAKE SPECTRA
(2022)
Article
Geosciences, Multidisciplinary
Maria Karpouza, Konstantinos Chousianitis, George D. Bathrellos, Hariklia D. Skilodimou, George Kaviris, Assimina Antonarakou
Summary: This study aims to propose an approach for simultaneous hazard zonation mapping of earthquake-induced secondary effects. The methodology involves evaluating the hazard of seismically induced landslides and soil liquefaction separately, then combining them into a single hazard map to assess areas exposed to both phenomena. Using spatial multi-criteria method and Geographic Information Systems, the methodology can categorize regions threatened by coseismic landslides, soil liquefaction, or both, especially in seismically active regions with mountainous terrain and coastal plain areas.
Article
Geosciences, Multidisciplinary
Mohamed EL Hilali, Ali Bounab, Youssef Timoulali, Jamal Eddine Stitou El Messari, Mohamed Ahniche
Summary: This study assesses the seismic site-effects and liquefaction hazard in Northern Morocco using the HVSR method and vulnerability index (Kg). The findings indicate a higher vulnerability to liquefaction in the Southern part of the basin, attributed to the asymmetric geometry of Quaternary sedimentation and tectonic uplift. Despite challenges in data acquisition, the study concludes the existence of significant seismic effects potential in the area.
Article
Engineering, Civil
Bo Li, Zhen Cai, Zhongdong Duan
Summary: In seismic risk analysis, selecting hazard-consistent ground motions is a key step. Current methods have limitations, and this study proposes a novel method that utilizes a scenario earthquake set and simulation of target response spectra. The selected ground motions using this method show very good consistency with the site seismic hazards.
Article
Geochemistry & Geophysics
Srijit Bandyopadhyay, Yogita M. Parulekar, Aniruddha Sengupta
Summary: Probabilistic seismic hazard assessment (PSHA) and site-specific amplification study are crucial to understand the behavioral patterns of soil sites during earthquakes. This paper presents the PSHA results for Assam state, providing peak ground acceleration values and site-specific response spectra for different return periods and exceedance probabilities.