Results 71 to 80 of about 137,368 (329)

Developing a model of evacuation after an earthquake in Lebanon [PDF]

open access: yesarXiv, 2013
This article describes the development of an agent-based model (AMEL, Agent-based Model for Earthquake evacuation in Lebanon) that aims at simulating the movement of pedestrians shortly after an earthquake. The GAMA platform was chosen to implement the model.
arxiv  

Experimental study on the damage characteristics of cyclic disturbance and acoustic emission characteristics of different types of sandstones under high stress in deep mines

open access: yesDeep Underground Science and Engineering, EarlyView.
The mechanical characteristics of three different types of sandstones under high stress levels are studied. The degree of fragmentation of specimens increases with the applied stress level. The acoustic emission counting of different types of sandstones presents three stages: weakening, stabilizing, and surging.
Yujing Jiang   +6 more
wiley   +1 more source

Dynamic bedrock channel width during knickpoint retreat enhances undercutting of coupled hillslopes

open access: yesEarth Surface Processes and Landforms, Volume 47, Issue 15, Page 3629-3640, December 2022., 2022
The graphical abstract shows images of analogue flume experiments that highlight the width narrowing process during knickpoint retreat, and the cartoon figure shows the response of adjoining hillslopes. Abstract Mountain landscapes respond to transient tectonic and climate forcing through a bottom‐up response of enhanced bedrock river incision that ...
Edwin R.C. Baynes   +3 more
wiley   +1 more source

Seismic performance of concrete tunnel–sand–pile interaction by the shake table test

open access: yesDeep Underground Science and Engineering, EarlyView.
This research presents the square root sum of squares response of displacements and tunnel moments under the Kobe and Loma Prieta seismic excitations with a peak ground acceleration of 0.05 g for various dry relative densities of local sand in Bangladesh.
Md. Foisal Haque, Mehedi A. Ansary
wiley   +1 more source

Linking uplift, erosion, and sedimentation using landscape evolution models: Madagascar since the Late Cretaceous

open access: yesEarth Surface Processes and Landforms, Volume 48, Issue 1, Page 215-229, January 2023., 2023
This paper uses a numerical landscape evolution model to reconstruct the topographic history of Madagascar since the Late Cretaceous. The model is optimised by balancing the volumes of onshore erosion and offshore sedimentation; the former is predicted with erosion laws and based on uplift history inferred from elevated planation surfaces.
Ruohong Jiao   +4 more
wiley   +1 more source

A review of multiscale numerical modeling of rock mechanics and rock engineering

open access: yesDeep Underground Science and Engineering, EarlyView.
Multiscale numerical methods of rock mechanics and rock engineering are reviewed, and the review results show that more attention should be paid to the development of an advanced constitutive model in addition to numerical techniques themselves. Abstract Rock is geometrically and mechanically multiscale in nature, and the traditional phenomenological ...
Xindong Wei, Zhe Li, Gaofeng Zhao
wiley   +1 more source

EVALUATION OF TSUNAMI DANGER FOR THE WESTERN COAST OF THE BLACK SEA BY POSSIBLE CATASTROPHIC UNDERWATER EARTHQUAKES [PDF]

open access: yesScience of Tsunami Hazards, 2018
The present study deals with the numerical simulation of generation and propagation of tsunami waves from hypothetical earthquake sources along the western coast of the Black Sea.
R.Kh.Mazova, Kolchina E.A
doaj  

Geostatistical modeling to capture seismic-shaking patterns from earthquake-induced landslides [PDF]

open access: yes, 2018
In this paper, we investigate earthquake-induced landslides using a geostatistical model that includes a latent spatial effect (LSE). The LSE represents the spatially structured residuals in the data, which are complementary to the information carried by the covariates.
arxiv   +1 more source

Optimal mud pressure design using nonlinear failure criteria for wellbores in shaley sedimentary reservoir

open access: yesDeep Underground Science and Engineering, EarlyView.
The present study uses the Modified Mohr‐Coulomb true‐triaxial failure criterion (MMC_TT), which predicts the strength of rock better than the MGC criterion in laboratory true‐triaxial tests to overcome the limitations. Moreover, based on the data from previously published five vertical wells in the Krishna‐Godavari basin (K‐G basin), an empirical ...
Ravindra K. Burnwal, Aditya Singh
wiley   +1 more source

Blasting effects of cross‐fault deep‐buried excavation on adjacent existing tunnel stability

open access: yesDeep Underground Science and Engineering, EarlyView.
Based on the theoretical analysis of cylindrical wave propagation in a deep rock mass in the fault with a filling layer, the calculation method of peak particle velocity caused by wave propagation in the existing tunnel is established. The viscoelastic characteristics of a rock mass are examined in the analysis.
Shaobo Chai   +5 more
wiley   +1 more source

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