Results 31 to 40 of about 97,428 (295)

OSG-057 Superconducting Gravimeter Noise Levels in Lhasa (China)

Terrestrial, Atmospheric and Oceanic Sciences, 2016
This research tests OSG-057 superconducting gravimeter (SG) performance in Lhasa in terms of noise levels in the seismic (2 min to 1 h), sub-seismic (1 to 6 h), and tidal (above 6 h) bands. Based on the Seismic Noise Magnitude (SNM) and Sub-Seismic Noise
Miaomiao Zhang, Jianqiao Xu, Heping Sun, Xiaodong Chen, Jiangcun Zhou   +4 more
doaj   +1 more source

Seismic and Newtonian Noise in the GW Detectors

Galaxies, 2022
Gravitational wave detectors aim to measure relative length variations of the order of ΔL/L≃10−21, or less. Thus, any mechanism that is able to reproduce such a tiny variation can, in principle, threaten the sensitivity of these instruments, representing
Lucia Trozzo, Francesca Badaracco
doaj   +1 more source

Characterization of the seismic environment at the Sanford Underground Laboratory, South Dakota [PDF]

, 2010
An array of seismometers is being developed at the Sanford Underground Laboratory, the former Homestake mine, in South Dakota to study the properties of underground seismic fields and Newtonian noise, and to investigate the possible advantages of ...
, , A Sajeva, Acernese F, Acernese F DeSalvo R Harms J Sajeva A Shaffner L Trancynger T, Bartos I, Beccaria M, Blackburn L, Bormann P, Caddey S W, Carter J A, Chatterji S, Creighton T, D S Rabeling, F Acernese, F Barone, G Mueller, Gutenberg B, Harjes H-P, Harms J DeSalvo R Dorsher S Mandic V, Hild S, I Bartos, J F J van den Brand, J Harms, J Heise, L Naticchioni, Lück H, M Beker, M Coughlin, N Christensen, Pavlis G L, Peterson J, R DeSalvo, Robertson N A, S Dorsher, S Kandhasamy, S Márka, Smith J R for the LSC, T O'Keefe, T Trancynger, Tatsumi D, Tolman H L, V Mandic, V Wand, Withers M M, Young I R   +45 more
core   +4 more sources

Seismic noise between 0.003 Hz and 1.0 Hz and its classification

Progress in Earth and Planetary Science, 2023
It is now established that the primary microseism, the secondary microseisms, and the hum are the three main components of seismic noise in the frequency band from about 0.003 Hz to 1.0 Hz. Monthly averages of seismic noise are dominated by these signals
Toshiro Tanimoto, Aaron Anderson
doaj   +1 more source

Seismic Noise Recorded by Telecommunication Fiber Optics Reveals the Impact of COVID-19 Measures on Human Activity

The Seismic Record, 2021
Quantifying the response of human activity to different COVID-19 measures may serve as a potential way to evaluate the effectiveness of the measures and optimize them.
Junzhu Shen, Tieyuan Zhu
doaj   +1 more source

Machine learning for gravitational-wave detection: surrogate Wiener filtering for the prediction and optimized cancellation of Newtonian noise at Virgo

, 2020
The cancellation of noise from terrestrial gravity fluctuations, also known as Newtonian noise (NN), in gravitational-wave detectors is a formidable challenge. Gravity fluctuations result from density perturbations associated with environmental fields, e.
Badaracco, F, Bertolini, A, Bulik, T, Fiori, I, Harms, J, Idzkowski, B, Kutynia, A, Nikliborc, K, Paoletti, F, Paoli, A, Rei, L, Suchinski, M   +11 more
core   +1 more source

The Friendly Settlement of Human Rights Abuses in the Americas [PDF]

, 1999
We present a new method for estimation of seismic coda shape. It falls into the same class of methods as non-parametric shape reconstruction with the use of neural network techniques where data are split into a training and validation data sets.
Abbott, Aki, Albou, Anache-Ménier, Bakun, Bakun, Bath, Calvet, Dmitry Krasnoshchekov, Edelsbrunner, Edelsbrunner, Efron, Hirshorn, Hoshiba, Krasnoshchekov, Krasnoshchekov, Mikko Nikkilä, Nakahara, Paasschens, Rautian, Sato, Soloviev, Teichmann, Tsumura, Valentin Polishchuk, Wahlström, Zhou   +26 more
core   +2 more sources

Separation of Body and Surface Wave Background Noise and Passive Seismic Interferometry Based on Synchrosqueezed Continuous Wavelet Transform

Applied Sciences
Passive seismic interferometry is a technique that reconstructs virtual seismic records using ambient noise, such as random noise or microseisms. The ambient noise in passive seismic data contains rich information, with surface waves being useful for the
Xiaolong Li, Fengjiao Zhang, Zhuo Xu, Xiangbo Gong   +3 more
doaj   +1 more source

A Semi-classical calculus of correlations [PDF]

, 2011
The method of passive imaging in seismology has been developped recently in order to image the earth crust from recordings of the seismic noise. This method is founded on the computation of correlations of the seismic noise.
Campillo, Michel, Sato, Haruo, Shapiro, Nikolai M., Van Der Hilst, Robert D.   +3 more
core   +6 more sources

Ambient seismic noise in Cuba: analysis of broadband seismic stations in the Cuban Seismic Network

Dyna, 2022
This paper analyses seismic noise from broadband seismic stations within the Cuban National Seismic Service, focusing on location sites, soil or rock quality at installation sites and the impact of various factors on the noise signature of these seismic
Viana Poveda Brossard, Eduardo Rafael Diez Zaldivar   +1 more
doaj   +1 more source