Results 21 to 30 of about 269,483 (289)

Solid Model Bridge Static Damage Monitoring Based on GBSAR [PDF]

open access: yesJournal of Geodesy and Geoinformation Science, 2022
Bridge deformation monitoring usually adopts contact sensors, and the implementation process is often limited by the environment and observation conditions, resulting in unsatisfactory monitoring accuracy and effect. Ground-Based Synthetic Aperture Radar
Sichun LONG,Xiaoqin YUAN,Shide LU,Wenting LIU,Jinyu MA,Wenhao WU,Chuanguang ZHU
doaj   +1 more source

基于定点形变资料获取断裂浅层倾向和倾角的方法研究—以唐山台为例

open access: yesDizhen xuebao, 2018
本文利用唐山地震台1978—2016年跨断层定点形变资料探究唐山地震台所跨断层的浅层倾向和倾角。首先,对形变资料进行数字滤波处理,消除原始观测数据中的非构造信息;其次,对数据精度进行评价,得出1997—2016年滤波后的形变数据年累计残差普遍较小、精度较高;最后,采用精度较高的形变数据计算SE和NW两倾向不同倾角下基线与水准和的累计残差分布,进而获取断层的浅层倾向和倾角。结果显示,依据跨断层定点形变资料获得唐山地震台所跨断层的浅层倾向为SE,倾角为89°,该结果与前人探槽剖面中断层产状相一致 ...
Yongkui Wan   +4 more
doaj   +1 more source

Optical fiber sensors for coal mine shaft integrity and equipment condition monitoring [PDF]

open access: yes, 2019
Shaft is an important structure of mine. Deep mining increases mine pressure, induces shaft deformation and affects mine normal lifting. How to improve the inspection efficiency, reduce the maintenance cost and ensure the normal operation of the shaft is
Fu, J.   +9 more
core   +1 more source

Static and dynamic weighing of rolling stocks by mean of a customized FBG-Sensorized-Patch [PDF]

open access: yes, 2020
The structural health monitoring (SHM) of an infrastructure is of fundamental importance for the structure and people safety. Fiber Bragg Grating (FBG) sensors allow to design for each application, a tailored array of quasi-distributed sensors integrated
Astri, Alessandro   +6 more
core   +1 more source

Cognitions and questions regarding crustal deformation and location forecasts of strong earthquakes

open access: yesGeodesy and Geodynamics, 2015
Using Global Positioning System(GPS) data to analyze the earthquake preparation characteristics of the Kunlun Ms8.1 and the Wenchuan Ms8.0 earthquakes, we review the main research developments of earthquake forecasting and the mechanisms of earthquake ...
Wenxin Wei, Zaisen Jiang, Yanqiang Wu
doaj   +1 more source

Ground Deformation Monitoring for Subway Structure Safety Based on GNSS

open access: yesBuildings, 2023
Ground deformation poses a serious threat to the safety of subway structures. Consequently, intelligent and efficient automated safety monitoring of ground deformation along the subway has become urgent.
Dongmei Tan   +5 more
doaj   +1 more source

Monitoring of excessive deformation of steel structure Extra-High Voltage pylons [PDF]

open access: yes, 2017
Reliability and security of a power transmission depends on the state of the power grid and mainly on the state of the Extra-High Voltage pylons. The paper deals with deformation analysis of existing steel structure of selected Extra-High Voltage pylons ...
Hendrych, Jakub   +4 more
core   +2 more sources

Keeping watch over Colombia’s slumbering volcanoes [PDF]

open access: yes, 2015
The Volcanological and Seismological Observatories of Manizales, Pasto and Popayan (Colombian Geological Survey) monitor and study the active volcanoes of Colombia using seismological, geodetic, geochemical and other techniques.
BATTAGLIA, MAURIZIO   +5 more
core   +1 more source

GPS-Derived Fault Coupling of the Longmenshan Fault Associated with the 2008 Mw Wenchuan 7.9 Earthquake and Its Tectonic Implications

open access: yesRemote Sensing, 2018
Investigating relationships between temporally- and spatially-related continental earthquakes is important for a better understanding of the crustal deformation, the mechanism of earthquake nucleation and occurrence, and the triggering effect between ...
Yanchuan Li   +7 more
doaj   +1 more source

A Novel Imputation Model for Missing Concrete Dam Monitoring Data

open access: yesMathematics, 2023
To ensure the safety of concrete dams, a large number of monitoring instruments are embedded in the bodies and foundations of the dams. However, monitoring data are often missing due to failure of monitoring equipment, human error and other factors that ...
Xinran Cui   +4 more
doaj   +1 more source

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