Results 11 to 20 of about 607,204 (294)
Inversion of Rayleigh Wave Dispersion Curve Extracting from Ambient Noise Based on DNN Architecture
Applied Sciences, 2023 The inversion of the Rayleigh wave dispersion curve is a crucial step in obtaining the shear wave velocity (VS) of near-surface structures. Due to the characteristics of being ill-posed and nonlinear, the existing inversion methods presented low ...
Qingsheng Meng +3 more
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Application of the method of passive surface wave to the exploration of urban residential area
Carsologica Sinica, 2023 With the rapid development of cities, people are paying increasing attention to urban ground subsidence and underground space. As a means to directly explore the structure of subsurface media, geophysical methods are increasingly being applied to solve ...
Jianqiang WU +5 more
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Characterization of Sobradinho landslide in fluvial valley using MASW and ERT methods
REM: International Engineering Journal, 2020 Landslides can substantially impact the fluvial systems, which is why the continuous mapping of their extent, evolution and stability assessment is crucial. However, in such environments, material identification (e.g.
Yawar Hussain +6 more
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Geosciences, 2021 The estimate of the velocity of shear waves (Vs) is essential in seismic engineering to characterize the dynamic response of soils. There are various direct methods to estimate the Vs.
Angelo Aloisio +3 more
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Crustal structure below Popocat\'epetl Volcano (Mexico) from analysis of Rayleigh waves [PDF]
, 2007 An array of ten broadband stations was installed on the Popocat\'epetl volcano (Mexico) for five months between October 2002 and February 2003. 26 regional and teleseismic earthquakes were selected and filtered in the frequency time domain to extract the
Almendros +27 more
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Dispersive geometric curve flows [PDF]
Surveys in Differential Geometry, 2014 The Hodge star mean curvature flow on a 3-dimension Riemannian or pseudo-Riemannian manifold, the geometric Airy flow on a Riemannian manifold, the Schrodingier flow on Hermitian manifolds, and the shape operator curve flow on submanifolds are natural non-linear dispersive curve flows in geometric analysis.
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Dizhen xuebao, 2020 地球物理反演浅地表土层波速剖面通常基于初始速度结构模型，为避免对地勘资料产生较多依赖，充分利用地震和背景噪声等被动源观测记录，快速简便地构建出土层反演的初始模型，本文基于场地土层的频散曲线和水平与竖向谱比提出了一种改进半波长法。该方法首先通过水平与竖向谱比确定场地土层的卓越频率，获取场地覆盖层厚度，确定反演所需的频带范围；其次，利用瑞雷波相速度对剪切波速的偏导数随土层深度的变化规律反演出场地的初始速度结构，并结合工程场地勘探中的半波长法 ...
Jixin Wang +3 more
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Applied Sciences, 2021 Near-surface S-wave velocity structures (VS) are crucial in site-effect studies and ground-motion simulations or predictions. We explored S-wave velocity structures in Taichung, the second-largest city in Taiwan by population, by employing array ...
Huey-Chu Huang +3 more
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Ultrasonic guided wave detection of U-shaped pipeline [PDF]
MATEC Web of Conferences, 2020 The guided waves in the elbow was analyzed using semi- analytical finite element method, which was used to calculate the dispersion curves, along with the vibration deformation and energy flow density distribution of the elbow cross-section.
Zhu Longxiang +3 more
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E3S Web of Conferences, 2018 Ground structure characteristic is an important parameter in seismic site effect evaluation for earthquake structural design. Many geophysical methods can be used to estimate ground structure.
Cheah Yi Ben, Lau Tze Liang
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