Results 21 to 30 of about 908,118 (242)

Seismicity and Principal Seismic Effects [PDF]

open access: yesGeophysical Journal International, 1970
Summary A statistical method is given for estimating the total effect of earthquakes over a given period. The effect may be measured by return-time, shaking or damage, and may be exerted at a point (e.g. building), on a linear object (e.g. road), or on an area. For each type of effect there are given formulae for the statistical distribution,
G. M. Molchan   +2 more
openaire   +1 more source

Comparative analysis of the earthquake disaster risk of cities in Eastern China based on lethal levels – a case study of Yancheng City, Suqian City and Guangzhou City

open access: yesGeomatics, Natural Hazards & Risk, 2021
Earthquake disaster risk analyses provide significant scientific guidance for reducing earthquake disaster losses etc. The current commonly used method is based on the vulnerability of different types of buildings to evaluate, and may ignore the ...
Xia Chaoxu   +5 more
doaj   +1 more source

Principles of textual research on historical strong aftershocks and exploration of the catalogue revision plan−A case study of the strong aftershocks of the Tancheng 8½ earthquake in 1668

open access: yes地震科学进展, 2020
In order to put forward the principles and technical links for selecting and verifying historical strong aftershocks,the comprehensive technical scheme for the determination of occurrence time,epicenter location and magnitude of historical strong ...
Shouzhong Diao   +4 more
doaj   +1 more source

Generalized Seismic Phase Detection with Deep Learning [PDF]

open access: yesBulletin of The Seismological Society of America (BSSA), 2018
To optimally monitor earthquake‐generating processes, seismologists have sought to lower detection sensitivities ever since instrumental seismic networks were started about a century ago.
Z. Ross   +3 more
semanticscholar   +1 more source

Comparative analysis of VP type vertical pendulum tiltmeter in Shaanxi Province

open access: yes地震科学进展, 2021
Based on the observation data of VP type vertical pendulum tiltmeter at Qianling station,Xi’an station,Ankang station and Ningshan station in Shaanxi Province from January to December in 2020,the advantages and disadvantages of these observation data are
Xiaodong Yang   +3 more
doaj   +1 more source

Regional Seismic Wavefield Propagation [PDF]

open access: yes, 2004
Through the examination of local and regional seismic waveform data the crust and upper mantle of southern California are investigated. Using local and regional seismic phases such as Pn, Sn, PL, and surface waves, seismic wave velocities of interesting
Savage, Brian Kirk
core   +1 more source

Discussion on common problems in data tracking and analysis of geomagnetics

open access: yes地震科学进展, 2023
The tracking and analysis of precursor network observation data is comprehensively carried out at precursor stations and regional centers. The event records generated by the tracking and analysis of earthquake precursor data demonstrate the dynamic ...
Jianjun Quan   +4 more
doaj   +1 more source

Acceleration sensor of medium-high frequency dual FBG based on L-shaped support sensitization structure

open access: yesMeasurement + Control, 2022
It is a key part for micro seismic crack detection, mechanical equipment operation state and structural health monitoring to measure high frequency vibration.
Zhongchao Qiu   +5 more
doaj   +1 more source

Study on the seismic lethal level of buildings and seismic disaster risk in Guangzhou, China

open access: yesGeomatics, Natural Hazards & Risk, 2022
Seismic disaster risk assessment results are an important way to reduce disaster losses and casualties. In this article, a seismic disaster risk assessment method is constructed based on the lethal level, and a quantitative assessment of the earthquake ...
Chaoxu Xia   +4 more
doaj   +1 more source

Risk assessment of people trapped in earthquake disasters based on a single building: a case study in Xichang city, Sichuan Province, China

open access: yesGeomatics, Natural Hazards & Risk, 2022
Strengthening the study of trapped personnel distribution in an earthquake not only ensures the efficiency and orderliness of earthquake rescue but also maximizes the survival probability of trapped people and reduces casualties.
Benyong Wei   +3 more
doaj   +1 more source

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