PROBLEM TO BE SOLVED: To provide an earthquake time control operation device for an elevator for setting a range of allowance time from a time point receiving an emergency earthquake flash report to arrival of a principal motion (S-wave) of seismic wave and conducting controlled operation to a...
Preliminary results show that the addition of P waves has not significantly reduced the uncertainty of earthquake locations due to a poor signal to noise ratio and relatively large errors in P wave arrival times. It is thought that using the surface wave instead of the P-wave may improve the...
Earthquake Wave-Soil-Structure Interaction Analysis of Tall Buildings a wave-soil-structure interaction analysis is presented.The earthquake wave-soil-structure interaction analysis of tall buildings is the main focus of this ... M Ming 被引量: 3发表: 0年 Numerical Analysis of Tall Buildings ...
●Theslowertypeofbodywave,theSwave,travelsonlythroughsolidmaterial,whichistransverse(横向的)tothedirectionoftravel.●ThefirstP-waveonsetstartsfromthespotwhereanearthquakeoriginates.Thispointiscalledthefocus(震源).Thepointatthesurfaceimmediatelyabovethefocusisknownastheepicentre(震中).EarthquakeWaves(SeismicWaves)...
P-wave picking is one of the important steps for earthquake parameter determination. Although manual inspection of P-wave arrival timing is the most accurate method for detection but, using automated algorithm is a must in order to facilitate this continuous task. In this research article an ...
Waveform similarity in an earthquake swarm enables precise arrival time differences of P- and S-waves through cross spectral methods to be obtained. A numerical simulation guarantees the time resolution of the order of 1 ms for the time differences. This precise arrival time difference is used to...
Amy,S.,Mohler 摘要: An earthquake of magnitude ML 4.5 occurred on June 20, 1976 in an area of complex faulting in northeastern California, near the intersection of the Sierra Nevada, Modoc Plateau, Cascade Range, and Basin and Range geological provinces. P -wave first motion plots for ...
P wave seismic velocity and Vp/Vs ratio beneath the Italian peninsula from local earthquake tomography, Tectonophysics, 465(1-4), 1-23.Scafidi, D., Solarino, S., Eva, C., 2009. P wave seismic velocity and Vp/Vs ratio beneath the Italian Peninsula from local earthquake tomography. ...
Detailed three-dimensional images of P and S wave velocity and Poisson’s ratio (σ) of the crust and upper mantle beneath Kyushu in SW Japan are determined, with a focus on the source area of the 2016 Kumamoto earthquake (M 7.3) that occurred in the Bep
Wei Wei,RuoMei Sun,YaoLin Shi. P-wave tomographic images beneath southeastern Tibet: Investigating the mechanism of the 2008 Wenchuan earthquake[J]. Science China Earth Sciences . 2010 (9)Wei W, Sun R M, Shi Y L. P-wave tomographic images beneath southeastern Tibet: Investigating the ...