Results 121 to 130 of about 661,618 (285)

Landslide susceptibility mapping using a machine learning approach and different environmental factors in the Western Ghats region (India)

Earth Surface Processes and Landforms, Volume 51, Issue 5, May 2026.
Landslide susceptibility mapping in India's Western Ghats using machine learning revealed high‐risk zones driven by deforestation, slope alteration and road proximity. The Random Forest model showed highest accuracy, supporting targeted mitigation, planning and early warning systems.
Manoranjan Mishra, Rajkumar Guria, Suman Paul, Richarde Marques da Silva, Celso Augusto Guimarães Santos   +4 more
wiley   +1 more source

General theory of the modified Gutenberg-Richter law for large seismic moments

, 1999
The Gutenberg-Richter power law distribution of earthquake sizes is one of the most famous example illustrating self-similarity. It is well-known that the Gutenberg-Richter distribution has to be modified for large seismic moments, due to energy ...
Sornette, A., Sornette, D.
core  

Assessing Post‐Earthquake Emergency Healthcare Accessibility Considering Damage to Hospital Buildings and Transportation Infrastructure

Earthquake Spectra, Volume 42, Issue 2, May 2026.
This article presents a framework for performing a regional assessment of the accessibility of emergency healthcare facilities after a major earthquake. Accessibility is assessed by applying the enhanced two‐step floating catchment area method to a regional road network, implemented in ArcGIS.
Kiranjot Kaur, Carlos Molina Hutt, Amy M. Kim   +2 more
wiley   +1 more source

Ages and Masses of 0.64 million Red Giant Branch stars from the LAMOST Galactic Spectroscopic Survey

, 2019
We present a catalog of stellar age and mass estimates for a sample of 640\,986 red giant branch (RGB) stars of the Galactic disk from the LAMOST Galactic Spectroscopic Survey (DR4).
Bi, S., Chen, B., Huang, Y., Huo, Z., Li, Y., Liu, K., Liu, X., Ren, J., Shi, J., Tian, Z., Wang, C., Wu, Y., Xiang, M., Yuan, H., Zhang, J., Zhang, X., Zhao, G.   +16 more
core   +1 more source

Suitability of Ground‐Motion Models for Seismic Hazard Assessments in Puerto Rico and the US Virgin Islands

Earthquake Spectra, Volume 42, Issue 2, May 2026.
We perform linear mixed‐effects analyses with a ground‐motion dataset to evaluate how well ground‐motion models (GMMs) fit active crustal, subduction interface, and subduction intraslab earthquakes in Puerto Rico and the US Virgin Islands. Most of the GMMs reproduce the spatial variation in peak ground motions with earthquake magnitude and rupture ...
Brad T. Aagaard, Morgan P. Moschetti, Kyle B. Withers   +2 more
wiley   +1 more source

OpenAmp: An Open‐Source Site Amplification Database to Unlock the Potential of Machine Learning

Earthquake Spectra, Volume 42, Issue 2, May 2026.
OpenAmp is an open‐source, consistently curated, high‐quality database of earthquake site amplification functions derived from instrumental recordings, accompanied by a comprehensive suite of site metadata, for 1,742 K‐NET and KiK‐net observation sites in Japan.
Chuanbin Zhu, Dong‐youp Kwak, Marco Pilz, Annabel Haendel, Junju Xie, Hiroshi Kawase, Fabrice Cotton   +6 more
wiley   +1 more source

Design and research on seismic intensity monitoring system for railway based on Kriging interpolation method [PDF]

Railway Sciences
PurposeThis research aims to monitor seismic intensity along railway lines, study methods for calculating the extent of earthquake impact on railways and address practical challenges in estimating intensity distribution along railway routes, thereby ...
Xueying Zhou, Xin Bai, Wentao Sun, Zehui Zhang, Youbiao Wang, Cheng Wang, Yan Xuan   +6 more
doaj   +1 more source

Multifractal Scaling of Thermally-Activated Rupture Processes

, 2004
We propose a ``multifractal stress activation'' model combining thermally activated rupture and long memory stress relaxation, which predicts that seismic decay rates after mainshocks follow the Omori law $\sim 1/t^p$ with exponents $p$ linearly ...
A. Helmstetter, D. Sornette, D. Sornette, D. Sornette, D. L. Wells, F. Schmitt, G. Ouillon, G. Parisi, M. V. Rodkin, Y. Y. Kagan   +9 more
core   +1 more source

2025 U.S. Geological Survey National Seismic Hazard Model for Puerto Rico and the U.S. Virgin Islands: Overview of Model and Hazard Results

Earthquake Spectra, Volume 42, Issue 2, May 2026.
The U.S. Geological Survey recently updated the National Seismic Hazard Model (NSHM) for Puerto Rico and the U.S. Virgin Islands (PRVI). The first version of the PRVI NSHM was released in 2003, and therefore this 2025 update includes over 20 years of new geologic, geophysical, and engineering data, methods, and models.
Allison M. Shumway, Kevin R. Milner, Peter M. Powers, Morgan P. Moschetti, Jason M. Altekruse, Julie A. Herrick, Andrea L. Llenos, Kyle B. Withers, Edward H. Field, Brad T. Aagaard, Richard W. Briggs, Alexandra E. Hatem, Kirstie L. Haynie, Andrew J. Michael, Jessica A. Thompson Jobe, Kishor S. Jaiswal, Brandon S. Clayton, Nicolas Luco, Mark D. Petersen, Sanaz Rezaeian, Thomas L. Pratt, Yuehua Zeng   +21 more
wiley   +1 more source

A repeating earthquake catalog for the Atacama Segment in North Chile (24.5°S-30.5°S)

Seismica
Repeating earthquakes are close to identical seismic events that recur on the same fault patch with consistent focal mechanisms. They can be used to estimate local fault slip and their magnitude-dependent recurrence intervals can serve to infer patterns
Jonas Folesky, Jörn, Laurens Jan Hofman
doaj   +1 more source