Results 281 to 290 of about 2,146,102 (364)

Urban Transformations, Emergencies, and Disasters in Los Angeles: Constructing Civilian Unpreparedness as a Public Policy Issue (1940–1980) 洛杉矶的城市转型、紧急情况和灾害:将公民的准备不足建构为公共政策问题(1940年至1980年) Transformaciones Urbanas, Emergencias y Desastres En Los Ángeles: La Construcción De La Falta De Preparación Civil Como Un Problema De Política Pública (1940–1980)

open access: yesRisk, Hazards &Crisis in Public Policy, Volume 16, Issue 3, September 2025.
ABSTRACT This article explores the sociohistorical construction of civilian unpreparedness as a public policy issue in Los Angeles, arguing that it emerged not as a neutral response to escalating urban risks, but as a mechanism through which actors negotiated power dynamics amid urban transformations between 1940 and 1980.
Piero Tellerías Melgarejo
wiley   +1 more source

Self‐Supervised Coherence‐Based Denoising of Cryoseismological Distributed Acoustic Sensing Data

open access: yesJournal of Geophysical Research: Machine Learning and Computation, Volume 2, Issue 3, September 2025.
Abstract A major challenge in cryoseismology is that signals of interest are often buried within the high noise level emitted by a variety of environmental processes. Particular Distributed Acoustic Sensing (DAS) data often suffers from low signal‐to‐noise ratios (SNR) potentially resulting in a multitude of undetected events of interest, which further
Johanna Zitt   +4 more
wiley   +1 more source

Unsupervised Clustering of Microseismic Events and Focal Mechanism Analysis at the CO2 Injection Site in Decatur, Illinois

open access: yesJournal of Geophysical Research: Machine Learning and Computation, Volume 2, Issue 3, September 2025.
Abstract Characterization of induced microseismicity at a carbon dioxide (CO2 ${\text{CO}}_{2}$) storage site is critical for preserving reservoir integrity and mitigating seismic hazards. We apply a multilevel machine learning (ML) approach that combines the nonnegative matrix factorization and hidden Markov model to extract spectral representations ...
Rachel M. Willis   +5 more
wiley   +1 more source

Effects of the Last Quaternary Glacial Forebulge on Vertical Land Movement, Sea‐Level Change, and Lithospheric Stresses

open access: yesReviews of Geophysics, Volume 63, Issue 3, September 2025.
Abstract A glacial forebulge is a bending‐related upheaval of the lithosphere outside a glaciated area that co‐occurs to the depression of the lithosphere below an ice sheet. The forebulge of the last glaciation attracted attention over more than one century, but quantitative descriptions on the geometry of the forebulge are rare.
Christian Brandes   +4 more
wiley   +1 more source

A persistent radon anomaly signal preceding the destructive 7.7 M<sub>w</sub> earthquake in Myanmar on March 28, 2025. [PDF]

open access: yesSci Rep
Sahoo BK   +8 more
europepmc   +1 more source

Twenty‐Five Years of Probabilistic Fault Displacement Hazard Assessment

open access: yesReviews of Geophysics, Volume 63, Issue 3, September 2025.
Abstract Fault displacement hazard poses significant risks to critical infrastructure such as buildings, roads, and pipelines. While some structures can tolerate a certain degree of surface displacement, others, such as buildings, are far more vulnerable. Probabilistic Fault Displacement Hazard Assessment (PFDHA) quantifies the probability of exceeding
A. Valentini   +4 more
wiley   +1 more source

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