Results 31 to 40 of about 10,045,006 (209)

Topographic effects in stratified flows

open access: yesInternational Journal of Multiphase Flow, 1996
1. Background 2. The flow of a homogeneous layer with a free surface 3. Two-layer flows 4. Waves in stratified fluids 5. Stratified flow over two-dimensional obstacles 6. Stratified flow past three-dimensional topography 7. Applications to practical modelling of flow over complex terrain.
  +4 more sources

2021年5月21日漾濞MS6.4地震极震区地形效应对地震动特性的影响

open access: yesDizhen xuebao
基于对2021年5月21日漾濞MS6.4地震微观震中秀岭村进行的震害调查,利用流动观测地形台阵观测资料,分析了地形效应对地震动特性的影响。结果表明,若地震波垂直山脉走向入射,陡坡会放大地震波的高频部分,且不同高程处,山脉垂向低频差异较大,山脉走向低频差异较小。利用谱衰减法计算高频衰减参数的场地影响项κ0,分析了水平和竖向分量的κ0与场地软弱程度和卓越频率的相关性,其结果表明,在小尺度范围内,水平分量和竖向分量的κ0均具有较强的空间不均匀性。
Libao Zhang   +6 more
doaj   +1 more source

Effect of Topographic Data Accuracy on Watershed Management [PDF]

open access: yesInternational Journal of Environmental Research and Public Health, 2019
A digital elevation model (DEM) is a digital model or 3D representation of a terrain’s surface. There are many methods to create DEM such as LiDAR, stereo photogrammetry and topographic maps. DEMs are very important for many applications such as extracting terrain parameters for geomorphology and modeling water flow for hydrology or mass movement.
Ismail Fathy   +3 more
openaire   +2 more sources

Ground-Motion Modification by Soil, Structures, and Topography: A Review of Soil Structure Interaction (SSI) and Its Multi-Scale Extensions

open access: yesBuildings
The effect of an earthquake on any structure is primarily determined by both its inherent properties and the surrounding environmental conditions. When seismic waves pass through different media, their characteristics and properties, such as amplitude ...
Sudhir Bikram K C, Lei Zhang, Guobo Wang
doaj   +1 more source

THE EFFECT OF LONGSHORE TOPOGRAPHIC VARIATION ON OVERWASH MODELLING [PDF]

open access: yesCoastal Engineering Proceedings, 2011
This paper describes an application of the XBeach model to investigate the effect of longshore topographic variance on overwash. The model is used to simulate the morphological response of an eight- kilometer section of Santa Rosa Island, Florida, due to Hurricane Ivan (2004).
McCall, R. (author)   +2 more
openaire   +2 more sources

Seasonal Dependence of Topographic Effect on Mountainous Land Surface Temperature Retrieval: Insights From Landsat-8 Data

open access: yesIEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
Land surface temperature (LST) is a key parameter for characterizing land–atmosphere interactions, energy balance, and ecological processes. Previous studies have incorporated topographic effects in mountainous LST (MLST) retrieval, yet systematic
Zhi-Wei He   +3 more
doaj   +1 more source

A numerical study of 3D topographic site effects considering wavefield incident direction and geomorphometric parameters

open access: yesFrontiers in Earth Science, 2023
The topographic site effect plays a vital role in controlling the characteristics of earthquake ground motions. Due to its complexity, the factors affecting topographic amplification have not been fully identified.
Fuchen Wang   +7 more
doaj   +1 more source

Effects of tobacco smoking on the topographic eeg II [PDF]

open access: yesProgress in Neuro-Psychopharmacology and Biological Psychiatry, 1992
1. Tobacco smokers are well aware of the long term hazards of tobacco smoking, yet they continue to smoke. Presumably people smoke because of short term gains due to nicotine. 2. The mechanism by which nicotine is a drug reinforcer still needs a great deal of study.
Domino, Edward F.   +3 more
openaire   +3 more sources

Evaluation of high quality topographic data for geomorphological and flood impact studies in upland area: North York Moors, UK [PDF]

open access: yes, 2006
A flash flood on 19th June 2005 caused more than one hundred landslides in the North-western North York Moors uplands, UK. This project aims to 1) assess digital elevation models (DEMs) in terms of statistical terrain analysis and 2) explore the ...
Dong, Lu
core  

Incorporating the effects of topographic amplification in the analysis of earthquake-induced landslide hazards using logistic regression [PDF]

open access: yesNatural Hazards and Earth System Sciences, 2010
Seismic-induced landslide hazards are studied using seismic shaking intensity based on the topographic amplification effect. The estimation of the topographic effect includes the theoretical topographic amplification factors and the corresponding ...
S. T. Lee   +3 more
doaj   +1 more source

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