Results 41 to 50 of about 2,342 (198)

The Main Factors Controlling Probabilistic Seismic Hazard Variability Due to Epistemic Uncertainty in Greece: Results from a One-Factor-at-a-Time Analysis

The Seismic Record
We present a one-factor-at-a-time (OFAT) sensitivity study for the Probabilistic Seismic Hazard Assessment (PSHA) in Greece. The analysis examines several PSHA controlling factors, such as seismic source model (geometry, etc.), active tectonics (faulting
Athanasia Kerkenou, Costas Papazachos, Basil Margaris, Christos Papaioannou   +3 more
doaj   +1 more source

Seismic Hazard Estimation for Sumatra and Kalimantan Region Using Event-Based Probabilistic Seismic Hazard Analysis (EB-PSHA)

JGEET: Journal of Geoscience, Engineering, Environment and Technology
Indonesia is located in a tectonically active region influenced by the interactions of several tectonic plates. This tectonics setting give rise to numerous active faults and subduction zones, making Indonesia highly susceptible to earthquakes.
Aulia Khalqillah, Muksin Umar, Andrean V. H. Simanjuntak, Abdi Jihad, Vrieslend H. Banyunegoro   +4 more
doaj   +1 more source

Directionality Scaling of Scalar and Vector Ground Motion Intensity Measures

Earthquake Engineering &Structural Dynamics, EarlyView.
ABSTRACT The azimuthal directionality of earthquake ground‐motion intensity measures (IMs) is conventionally described by the ratios between the orientation‐independent maximum (RotD100) and median (RotD50) values over the horizontal plane. This study presents a refined characterization of the directionality of 31 IMs, including spectral accelerations (
Mao‐Xin Wang, Gang Wang
wiley   +1 more source

Planar seismic source characterization models developed for probabilistic seismic hazard assessment of Istanbul [PDF]

Natural Hazards and Earth System Sciences, 2017
This contribution provides an updated planar seismic source characterization (SSC) model to be used in the probabilistic seismic hazard assessment (PSHA) for Istanbul. It defines planar rupture systems for the four main segments of the North Anatolian
Z. Gülerce, K. Buğra Soyman, B. Güner, N. Kaymakci   +3 more
doaj   +1 more source

Influence of Site Amplification Approaches in PSRA: Insights From Five Different Cities

Earthquake Spectra, Volume 42, Issue 4, November 2026.
Regional and national seismic hazard models used in probabilistic seismic risk analysis often rely on generalized proxy‐based site terms to account for ground shaking amplification. This can result in coarse representations of site response, which can introduce bias or additional uncertainty in the associated risk results.
Julián Montejo, Vitor Silva, Bruno Pace, Marco Pagani   +3 more
wiley   +1 more source

Nota sobre la definición de demandas sísmicas para el diseño de edificaciones en Colombia

Geofísica Internacional
La definición de los parámetros de diseño sismorresistente de todo tipo de infraestructura resulta crucial para asegurar un buen desempeño en países ubicados en zonas con amenaza sísmica significativa.
Julián Montejo Espitia, Helen Crowley, Vitor Silva, Catalina Yepes-Estrada, Daniela González, Marco Pagani   +5 more
doaj   +1 more source

A Short Term Seismic Hazard Assessment in Christchurch, New Zealand, After the M 7.1, 4 September 2010 Darfield Earthquake: An Application of a Smoothing Kernel and Rate-and-State Friction Model

Terrestrial, Atmospheric and Oceanic Sciences, 2012
The Mw 6.3, 21 February 2011 Christchurch, New Zealand, earthquake is regarded as an aftershock of the M 7.1, 4 September 2010 Darfield earthquake. However, it caused severe damage in the downtown Christchurch.
Chung-Han Chan, Yih-Min Wu, Ting-Li Lin
doaj   +1 more source

Revisiting seismic hazard assessment for Peninsular Malaysia using deterministic and probabilistic approaches [PDF]

Natural Hazards and Earth System Sciences, 2018
Seismic hazard assessments, both deterministic and probabilistic, for Peninsular Malaysia have been carried out using peak ground acceleration (PGA) data recorded between 2004 and 2016 by the Malaysian Meteorological Department using triaxial ...
D. W. Loi, M. E. Raghunandan, V. Swamy
doaj   +1 more source

Suite of Regional Seismic Velocity Models for the U.S. Atlantic and Gulf Coastal Plains (CPVMv2.0): Incorporating Epistemic Uncertainty in Velocity Models

Earthquake Spectra, Volume 42, Issue 4, November 2026.
The U.S. Atlantic and Gulf Coastal Plain (CP) sediments are kilometers‐thick, low‐velocity deposits underlain by high‐velocity bedrock that create regional patterns of amplification and attenuation of ground motions. Capturing these effects is challenging because of the limited subsurface information available, particularly the shear wave velocity (VS)
Cassie Gann‐Phillips, Ashly Cabas, Chunyang Ji, Oliver Boyd, James Kaklamanos, Chris Cramer   +5 more
wiley   +1 more source

Accelerated Propagation of Epistemic Uncertainty for PSHA Using a Differentiable KL-PCE Framework [PDF]

Uncertainty quantification (UQ) in probabilistic seismic hazard analysis (PSHA) is vital for downstream tasks like infrastructure design, building code development, and disaster response planning. As the field of PSHA has matured, hazard models and their
Messa, Ian
core   +4 more sources