Results 21 to 30 of about 193,810 (301)

Extended sources of the main events of the Umbria-Marche (1997) seismic sequence inverted from geophysical data

open access: yesAnnals of Geophysics, 2008
The three largest events of the 1997 Umbria-Marche (Italy) sequence occurred on September 26, 1997 at 00:33 GMT (Event 1, MW=5.7) and 09:40 GMT (Event 2, MW=6.0) in the Colfiorito area and on the October 14, 1997 at 15:23 (Event 3, MW=5.6) in ...
M. E. Belardinelli
doaj   +1 more source

Application of seismic detection by spark source for concealed faults in Shanghai urban water network area

open access: yesDizhi lixue xuebao, 2021
Nowadays artificial seismic exploration is recognized as one of the most effective means to detect hidden faults in urban areas. However, good seismic exploration data in highly urbanized areas is often unavailable limited by the excitation source and ...
SONG Chunhua   +4 more
doaj   +1 more source

Hydropower Dam State and Its Foundation Soil Survey Using Industrial Seismic Oscillations

open access: yesGeosciences, 2019
In this article, we suggest a new type of seismic source for surveying both structure state and foundation soil conditions regardless of the level of seismic noise. In our opinion, powerful industrial equipment can be treated as seismic sources.
Galina Antonovskaya   +4 more
doaj   +1 more source

Seismic Hazard Analysis of China’s Mainland Based on a New Seismicity Model

open access: yesInternational Journal of Disaster Risk Science, 2023
Based on the seismic source model in the Fifth Generation Seismic Ground Motion Parameters Zonation Map of China (FGSGMPZMC), a new seismic fault model, the new zonation of seismic risk areas (SRAs), and the estimation of seismicity rates for 2021–2030 ...
Weijin Xu, Jian Wu, Mengtan Gao
doaj   +1 more source

Seismic Coherent Noise Removal of Source Array in the NSST Domain

open access: yesApplied Sciences, 2022
The technique of the source array based on the vibroseis can provide the strong energy of a seismic wave field, which better meets the need for seismic exploration.
Minghao Yu, Xiangbo Gong, Xiaojie Wan
doaj   +1 more source

The application of improved SURF optical flow algorithm in seismic support safety monitoring system

open access: yesInternational Journal of Cognitive Computing in Engineering
Frequent earthquakes pose a major threat to the safety of building structures. As a critical component of earthquake-resistant systems, dynamic health monitoring of seismic isolation bearings is essential. However, existing monitoring methods are limited
Jiahui Wang
doaj   +1 more source

Asymmetric Supply Type Hydrostatic Journal Gas Bearings to Support Large Load Rotors

open access: yesJournal of Advanced Mechanical Design, Systems, and Manufacturing, 2012
Rotating machinerys have problems at bearings to support a rotor such as seismic ACROSS transmitters. The ACROSS ( Accurately Controlled Routinely Operated Signal System ) is a new technical method to detect subtle changes in the physical state of Earth ...
Tomohiko ISE   +2 more
doaj   +1 more source

Prediction method of coal burst risk based on focal mechanism and location error calibration

open access: yesMeitan xuebao, 2023
Under the background of the rapid development of intelligent coal burst monitoring technology, how to use massive seismic monitoring information to investigate source rupture and apply it to the prediction, early warning, or prevention of coal burst is ...
Yaoqi LIU   +6 more
doaj   +1 more source

Helioseismic analysis of the solar flare-induced sunquake of 2005 January 15 [PDF]

open access: yes, 2006
We report the discovery of one of the most powerful sunquakes detected to date, produced by an X1.2-class solar flare in active region 10720 on 2005 January 15.
Besliu-Ionescu, D.   +4 more
core   +1 more source

Seismic Hazard Assessment for a Wind Farm Offshore England

open access: yesGeotechnics, 2022
Offshore wind has become a major contributor to reducing global carbon emissions. This paper presents a probabilistic seismic hazard analysis for the Sofia Offshore Wind Farm, which is located about 200 km north-east of England in the southern North Sea ...
Brian Carlton   +2 more
doaj   +1 more source

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