Results 21 to 30 of about 16,615 (70)

Source mechanism of Saturn narrowband emission [PDF]

Annales Geophysicae, 2010
Narrowband emission (NB) is observed at Saturn centered near 5 kHz and 20 kHz and harmonics. This emission appears similar in many ways to Jovian kilometric narrowband emission observed at higher frequencies, and therefore may have a similar source ...
J. D. Menietti, P. H. Yoon, P. H. Yoon, Sheng-Yi Ye, B. Cecconi, A. M. Rymer   +5 more
doaj   +1 more source

Long period seismic source characterization at Popocatépetl volcano, Mexico

Geophysical Research Letters, 2012
The seismicity of Popocatépetl is dominated by long‐period and very‐long period signals associated with hydrothermal processes and magmatic degassing. We model the source mechanism of repetitive long‐period signals in the 0.4–2 s band from a 15‐station ...
Alejandra Arciniega‐Ceballos, Phillip Dawson, Bernard A. Chouet   +2 more
doaj   +1 more source

A possible source mechanism for magnetotail current sheet flapping [PDF]

Annales Geophysicae, 2018
The origin of the flapping motions of the current sheet in the Earth's magnetotail is one of the most interesting questions of magnetospheric dynamics yet to be solved.
L. Juusola, L. Juusola, Y. Pfau-Kempf, U. Ganse, M. Battarbee, T. Brito, M. Grandin, L. Turc, M. Palmroth, M. Palmroth   +9 more
doaj   +1 more source

Harmonic source mechanism model of distributed photovoltaic power generation system

Zhejiang dianli, 2022
To resolve problems of power quality given rise to by the integration of large-scale distributed photovoltaic power generation， the paper analyzes the influence of bipolar SPWM control algorithm on the harmonic characteristics of inverters as well as the
CHEN Shaowei, LIN Kunjie, CHEN Bilin
doaj   +1 more source

Tensile–shear microcrack source mechanism and stress inversion methods of coal–rock

Meitan xuebao
Precise monitoring and quantitative inversion of coal–rock fracture geometries and stress‐field distributions are regarded as fundamental scientific prerequisites for elucidating the evolution of rockburst processes and associated failure mechanisms, and
Enyuan WANG, Li ZHANG, Xiaoran WANG, Xiaofei LIU, Nan LI   +4 more
doaj   +1 more source

Evaluation of focal mechanism and inducing burst ability of large energy mine earthquakes in deep thick overburden mine

Meitan kexue jishu
Deep thick overlying strata mine often faces frequent occurrence of mine earthquake during mining, among which large energy mine earthquakes may induce rock burst.
Quanping ZHANG, Yinghao HAO, Yongjin HUO, Qian ZHAO, Siyuan GONG, Rupei ZHANG   +5 more
doaj   +1 more source

Infrasound Unmasks Flow Turbulence as an Additional Seismic Source in Debris Flows

Geophysical Research Letters
Debris flows radiate both seismic and infrasonic waves. According to previous studies, seismic energy is generated by the solid particle collisions with the riverbed and is dominated by the boulder‐rich front, while infrasound is produced by turbulence ...
Giacomo Belli, Emanuele Marchetti, Fabian Walter, Duccio Gheri   +3 more
doaj   +1 more source

Progress of the Identification of Noise Sources and Analysis of Noise Source Mechanisms in Jets

Hangkong gongcheng jinzhan, 2020
Jet noise is the dominating component of aircraft aerodynamic noise, and causes severe environmental pollution and health threats. Yet lack of a fundamental understanding of how turbulent eddies generate noise radiation poses great challenges in ...
ZHAI Chaohui, LIU Yanchen, DU Yongle
doaj   +1 more source

Stress Deflection Effect and Rockburst Mechanism in Staggered Roadways Beneath “L-Shaped” Residual Pillar

Sensors
Frequent rockbursts in staggered roadways beneath residual coal pillars pose a critical challenge for the slice mining of ultra-thick coal seams. Taking the LW250101-2 of Huating Coal Mine as a case study, this paper systematically reveals the stress ...
Qiang Lu, Jiancheng Jin, Siyuan Gong, Hui Li, Rupei Zhang, Bingrui Chen, Ying Qu, Zonglong Mu   +7 more
doaj   +1 more source

Numerical Modeling of Acoustic Emission Source Mechanisms and Crack Damage in Westerly Granite Subject to Triaxial Compression Tests

Applied Sciences
This study investigates the complex relationship between fracture patterns and acoustic emission (AE) mechanisms during triaxial deformation experiments on Westerly granite under various confining pressures (5, 10, 20, and 40 MPa).
Yu Zhang, Sergio C. Vinciguerra, Gessica Umili, Anna M. Ferrero   +3 more
doaj   +1 more source