Results 21 to 30 of about 14,357 (245)

Subtraction of Newtonian Noise Using Optimized Sensor Arrays [PDF]

, 2012
Fluctuations in the local Newtonian gravitational field present a limit to high precision measurements, including searches for gravitational waves using laser interferometers.
Adhikari, Rana X., Driggers, Jennifer C., Harms, Jan   +2 more
core   +2 more sources

Evaluating seismic beamforming capabilities of distributed acoustic sensing arrays [PDF]

Solid Earth, 2021
The versatility and cost efficiency of fibre-optic distributed acoustic sensing (DAS) technologies facilitate geophysical monitoring in environments that were previously inaccessible for instrumentation.
M. P. A. van den Ende, J.-P. Ampuero
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

Micromachined Accelerometers with Sub-µg/√Hz Noise Floor: A Review

Sensors, 2020
This paper reviews the research and development of micromachined accelerometers with a noise floor lower than 1 µg/√Hz. Firstly, the basic working principle of micromachined accelerometers is introduced.
Chen Wang, Fang Chen, Yuan Wang, Sina Sadeghpour, Chenxi Wang, Mathieu Baijot, Rui Esteves, Chun Zhao, Jian Bai, Huafeng Liu, Michael Kraft   +10 more
doaj   +1 more source

A Linear Inversion Approach to Measuring the Composition and Directionality of the Seismic Noise Field

Remote Sensing, 2021
We develop a linear inversion technique for measuring the modal composition and directionality of ambient seismic noise. The technique draws from similar techniques used in astrophysics and gravitational-wave physics, and relies on measuring cross ...
Patrick M. Meyers, Tanner Prestegard, Vuk Mandic, Victor C. Tsai, Daniel C. Bowden, Andrew Matas, Gary Pavlis, Ross Caton   +7 more
doaj   +1 more source

Detection, Analysis, and Removal of Glitches From InSight's Seismic Data From Mars

Earth and Space Science, 2020
The instrument package SEIS (Seismic Experiment for Internal Structure) with the three very broadband and three short‐period seismic sensors is installed on the surface on Mars as part of NASA's InSight Discovery mission.
John‐Robert Scholz, Rudolf Widmer‐Schnidrig, Paul Davis, Philippe Lognonné, Baptiste Pinot, Raphaël F. Garcia, Kenneth Hurst, Laurent Pou, Francis Nimmo, Salma Barkaoui, Sébastien de Raucourt, Brigitte Knapmeyer‐Endrun, Martin Knapmeyer, Guénolé Orhand‐Mainsant, Nicolas Compaire, Arthur Cuvier, Éric Beucler, Mickaël Bonnin, Rakshit Joshi, Grégory Sainton, Eléonore Stutzmann, Martin Schimmel, Anna Horleston, Maren Böse, Savas Ceylan, John Clinton, Martin van Driel, Taichi Kawamura, Amir Khan, Simon C. Stähler, Domenico Giardini, Constantinos Charalambous, Alexander E. Stott, William T. Pike, Ulrich R. Christensen, W. Bruce Banerdt   +35 more
doaj   +1 more source

MEMS-Based Electrochemical Seismometer with a Sensing Unit Integrating Four Electrodes

Micromachines, 2021
This paper presents a new process to fabricate a sensing unit of electrochemical seismometers using only one silicon–glass–silicon bonded wafer. By integrating four electrodes on one silicon–glass–silicon bonded wafer, the consistency of the developed ...
Wenjie Qi, Chao Xu, Bowen Liu, Xu She, Tian Liang, Deyong Chen, Junbo Wang, Jian Chen   +7 more
doaj   +1 more source

PERFORMANCE OF RESONANT SEISMOMETERS [PDF]

GEOPHYSICS, 1954
A group of resonant vertical seismometers, each tuned to cover a part of the spectrum of microseism frequencies, has been operated for about one year. These instruments (a) clearly distinguish between simultaneous microseisms from two separate sources; (b) show an improved signal‐to‐noise ratio for microseisms from a single storm, permitting earlier ...
Donn, William L., Ewing, Maurice, Press, Frank   +2 more
openaire   +3 more sources

Joint towed streamer and ocean-bottom-seismometer data multi-parameter full waveform inversion in acoustic-elastic coupled media

Frontiers in Earth Science, 2023
Short-offset towed streamer data, and sparse ocean-bottom seismometer (OBS) data are not conducive to applying multi-parameter full waveform inversion (FWI) in production.
Tao Yang, Yuzhu Liu, Yuzhu Liu, Jizhong Yang, Jizhong Yang   +4 more
doaj   +1 more source

.Design of acquisition system of multi-channel microseismic signal

Gong-kuang zidonghua, 2018
In view of problems of high cost and low universality existed in current acquisition systems of mine microseismic signal, an acquisition system of multi-channel microseismic signal was designed.
CAI Jianxian, MIAO Jie, YAO Zhenjing, LI Yanan, HAN Zhiming   +4 more
doaj   +1 more source