Results 91 to 100 of about 145,917 (290)

Seismic properties of the crust and uppermost mantle of North America [PDF]

Seismic refraction profiles for the North American continent were compiled. The crustal models compiled data on the upper mantle seismic velocity (P sub n), the crustal thickness (H sub c) and the average seismic velocity of the crystalline crust (V sub ...
Braile, L. W., Hinze, W. J., Keller, G. R., Vonfrese, R. R. B.   +3 more
core   +1 more source

Sunquakes: helioseismic response to solar flares

, 2014
Sunquakes observed in the form of expanding wave ripples on the surface of the Sun during solar flares represent packets of acoustic waves excited by flare impacts and traveling through the solar interior.
Kosovichev, Alexander G.
core   +1 more source

Full‐scale Shaking Table Tests on a 10‐story Steel Moment‐resisting Frame Building with Buckling‐restrained Braces

Earthquake Engineering &Structural Dynamics, EarlyView.
ABSTRACT In February 2023, a comprehensive series of shaking table tests were conducted at the E‐Defense facility, the world's largest three‐dimensional earthquake simulator, on a full‐scale 10‐story steel moment‐resisting frame supplemented with BRBs.
Jun Fujiwara, Jialiang Jin, Jionghui Li, Tianhao Yan, Ryota Nishi, Akiko Kishida, Koichi Kajiwara, Takuya Nagae, Taichiro Okazaki, Tatsuya Asai   +9 more
wiley   +1 more source

Tight sandstone fluid detection technology based on multi-wave seismic data

Open Geosciences
The SX area of the Ordos Basin in China is characterized by small thickness and considerable lateral variation of the reservoir, and high heterogeneity. It is difficult to identify gas and water by conventional P-wave seismic data without fully utilizing
Yutan Dou, Daxing Wang, Mengbo Zhang, Fei Li, Guanghong Du, Yonggang Wang, Yuhua Zhao, Feng Liu, Yan Huang, Jie Zhang, Xiaojie Cui, Ligang Huang, Jun Zhu   +12 more
doaj   +1 more source

Fusion analysis of co-seismic response between broadband tiltmeters and broadband seismometers in Chengde area

地震科学进展
This article focuses on the co-seismic waveforms collected by the VP type broadband tiltmeters and the BBVS-120 type broadband seismometer at the Chengde seismic station. Using the methods of wavelet analysis and short time Fourier transform, six seismic
Donghui Yang, Chunling Ji, Jiaqi Wang, Wenjun Li, Yanhong Yu, Chengli Jiao, Jianqing Zhou   +6 more
doaj   +1 more source

Modeling seismic wave propagation and amplification in 1D/2D/3D linear and nonlinear unbounded media

, 2010
To analyze seismic wave propagation in geological structures, it is possible to consider various numerical approaches: the finite difference method, the spectral element method, the boundary element method, the finite element method, the finite volume ...
Bard P. Y., Bard P. Y., Bonnet M., Bonnet M., Bouchon M., Chaljub E., Chopra A. K., Dobry R., Frankel A., Hughes T. J. R., J. F. Semblat, Komatitsch D., Manolis G. D., Sanchez-Sesma F. J., Sanchez-Sesma F. J., Semblat J. F., Sommerville P. G., Sánchez-Sesma F. J., Wirgin A., Wolf J. P.   +19 more
core   +6 more sources

Comparison of Seismic Performance Assessment Using Observed or Simulated Ground Motions in Seismic Hazard Analysis and Ground Motion Selection

Earthquake Engineering &Structural Dynamics, EarlyView.
ABSTRACT This paper illustrates opportunities for the use of simulated ground motions in seismic performance assessment – from seismic hazard, ground‐motion selection, response history analysis, and seismic demand hazard calculation. The illustration is through a comparative analysis with the conventional alternative of observed ground motions.
Vahid Loghman, Brendon A. Bradley, Claudio Schill   +2 more
wiley   +1 more source

Study on seismic displacement of coal-rock fracture based on radiation energy

International Journal of Coal Science & Technology
Accurately revealing the spatial distribution law of seismic displacement is significance for revealing the mechanism of dynamic load induced rockburst and guiding the dynamic support of roadway.
Shengquan He, Maoxin Tian, Xueqiu He, Tingxiang Ren, Dazhao Song, Feng Shen, Tuo Chen, Junjun Feng   +7 more
doaj   +1 more source

DETERMINATION OF COORDINATES OF SEISMIC WAVE SOURCE BY AMPLITUDE METHOD OF PASSIVE LOCATION

Геодинамика и тектонофизика, 2015
The paper presents results of the mathematical synthesis of the method of passive location of a seismic wave source. The method employs measurements of regular attenuation of seismic oscillation amplitudes.
Vasily D. Syten’ky
doaj   +1 more source

An SSI‐Informed Design for Tuned Mass Dampers With Small‐to‐Large Mass Ratios

Earthquake Engineering &Structural Dynamics, EarlyView.
ABSTRACT Tuned Mass Dampers (TMDs) are used to mitigate structural vibrations induced by seismic or wind excitation, by tuning the device to the system's dominant resonant frequencies. However, the TMD effectiveness can be undermined by soil‐structure interaction, which can lead to elongation of the vibration periods and to combined translational ...
Davide Noè Gorini, Pasquale Roberto Marrazzo, Elide Nastri, Rosario Montuori   +3 more
wiley   +1 more source