Results 21 to 30 of about 1,629,358 (124)

Coseismic Shallow Landslide Distributions Reveal Patterns of Regolith Thickness in High Mountains

Journal of Geophysical Research: Earth Surface, Volume 131, Issue 10, October 2026.
Abstract Earthquake‐triggered landslides are a major source of sediment mobilization in steep mountain landscapes, yet the controls that organize regional patterns of coseismic shallow failure remain incompletely understood. Because shallow landslides occur within regolith, their initiation and magnitude depend strongly on near‐surface material ...
Suryodoy Ghoshal, Sarah J. Boulton, Tristram C. Hales, Georgina Bennett, Amy Beswick, Joshua N. Jones, Shaun Lewin, Zoë K. Mildon, Martin Stokes, Michael R. Z. Whitworth, Benjamin Campforts   +10 more
wiley   +1 more source

Development of an hybrid GMPE-less ShakeMap implementation for real-time ground shaking maps reconstruction

, 2023
Ground shaking maps are an essential tool for seismic monitoring and civil defence operations as they provide information about the area and amplitude of the ground motion relative to a seismic event.
Simone Francesco Fornasari, Veronica Pazzi, Giovanni Costa   +2 more
core   +1 more source

Predicting Seismic Intensity Using Machine Learning With Ancillary Data: Evidence From Destructive Earthquakes in China

Engineering Reports, Volume 8, Issue 9, September 2026.
A machine learning framework integrating multisource seismic, social, and geographic data accurately predicts kilometer‐scale seismic intensity, enabling rapid postearthquake damage assessment during data‐scarce “black‐box” periods. ABSTRACT Accurate and rapid assessment of seismic intensity is crucial for postearthquake emergency response.
Ma Yuan, Yu Jianming, Zhao Hui, Gong Huiyuan, Zhang Jianying   +4 more
wiley   +1 more source

Validation of ShakeMaps Created From Global Navigation Satellite System (GNSS) Velocities

Earthquake Spectra, Volume 42, Issue 3, August 2026.
Ground velocity observations generated through a time difference of Global Navigation Satellite Systems (GNSS) phase observables and orbits have been shown to be comparable to seismic recordings without clipping during intense ground motions. Computing GNSS velocities is also computationally scalable and increases the density of ground motion ...
Jensen V. DeGrande, Brendan W. Crowell
wiley   +1 more source

A Performance‐Based Earthquake Fatality Modeling Framework Using Collapse Volume Ratios

Earthquake Spectra, Volume 42, Issue 2, May 2026.
Conventional earthquake fatality models are commonly implemented using a binary representation of building collapse, an assumption that overlooks severe failure modes and systematically underestimates fatalities. To address this limitation, this study advances the collapse volume ratio—a continuous metric quantifying the reduction of survivable space ...
Luis Ceferino, Yinchen Yi, Wenxiao Li, Yvonne Merino, Luis Moya, Kimberley Shoaf, Emily So   +6 more
wiley   +1 more source

A Comparison of Two Versions of Modified Mercalli Intensity for Earthquake Exposure Assessment [PDF]

, 2012
The U.S. Geological Survey conducted an earthquake exposure assessment for the State of Washington using peak ground acceleration (PGA) shaking from the USGS ShakeMap Project grouped to approximate Modified Mercalli Intensity (MMI) classes.
Ratliff, Jamie L., Ratliff, Jamie Lynne
core   +1 more source

A Temporal Look at the Influence of Topographic Amplification on Earthquake‐Triggered Landslides in 3D Seismic Simulations

Journal of Geophysical Research: Earth Surface, Volume 131, Issue 4, April 2026.
Abstract Earthquakes are a primary trigger for landslides, often leading to catastrophic consequences. While numerous studies have explored the spatial distribution of earthquake‐triggered landslides, understanding the interaction between seismic waves and topography remains a critical challenge.
Emerald Awuor, Audrey Dunham, Hakan Tanyas, Islam Fadel   +3 more
wiley   +1 more source

Accounting for rupture directivity in ShakeMap

, 2010
The rapid and accurate information about the ground shaking following an earthquake is necessary for emergency response planning. A prompt strategy is contouring the real data recorded at the stations. However only few regions, i.e.
Michelini, Alberto, Saraò, Angela, Faenza, Licia, Herrero, André, Cultrera, Giovanna, Spagnuolo, Elena   +5 more
core   +1 more source

Beyond Deaths and Dollars: Modeling Requirements to Support Equity‐Focused Disaster Risk Management

Earthquake Spectra, Volume 42, Issue 1, February 2026.
The disaster risk modeling framework has long focused on quantifiable impact metrics to assess a hazard's potential direct effects, such as fatalities (deaths) and economic losses (dollars). Over time, as the framework has expanded to inform both public and private applications, additional impact metrics that more directly consider the societal roots ...
Sabine Loos, Marísa Macías, Madeline Karr, Lori Peek   +3 more
wiley   +1 more source

Uncertainty in Ground-Motion-to-Intensity Conversions Significantly Affects Earthquake Early Warning Alert Regions

The Seismic Record
We examine how the choice of ground-motion-to-intensity conversion equations (GMICEs) in earthquake early warning (EEW) systems affects resulting alert regions. We find that existing GMICEs can underestimate observed shaking at short rupture distances or
Jessie K. Saunders, Annemarie S. Baltay, Sarah E. Minson, Maren Böse   +3 more
doaj   +1 more source