Results 11 to 20 of about 18,788 (259)
A Sub-1 Hz Resonance Frequency Resonator Enabled by Multi-Step Tuning for Micro-Seismometer [PDF]
Micromachines, 2021 We propose a sub-1 Hz resonance frequency MEMS resonator that can be used for seismometers. The low resonance frequency is achieved by an electrically tunable spring with an ultra-small spring constant.
Jun Wu +3 more
doaj +2 more sources
Implications of Dedicated Seismometer Measurements on Newtonian-Noise Cancellation for Advanced LIGO. [PDF]
Phys. Rev. Lett. 121, 221104 (2018), 2018 Newtonian gravitational noise from seismic fields will become a limiting noise source at low frequency for second-generation, gravitational-wave detectors. It is planned to use seismic sensors surrounding the detectors' test masses to coherently subtract
M. Coughlin +7 more
semanticscholar +2 more sources
Extensions of the Galperin Transformation Matrices for Triaxial Seismometers [PDF]
Sensors, 2022 Since its invention in 1955, the Galperin symmetric triaxial seismometer has been widely used for seismic detection on Earth, and most recently on the planet Mars.
Talso C. P. Chui +2 more
doaj +2 more sources
MEMS-Based Electrochemical Seismometer Relying on a CAC Integrated Three-Electrode Structure
Sensors, 2021 This study developed a MEMS-based electrochemical seismometer relying on a cathode–anode–cathode (CAC) integrated three-electrode structure where two cathodes were positioned on two surfaces of a silicon wafer, while one anode was positioned on the ...
Xu She +7 more
doaj +2 more sources
Optimization of seismometer arrays for the cancellation of Newtonian noise from seismic body waves [PDF]
Classical and quantum gravity, 2019 Newtonian noise (NN) from seismic fields is predicted to become a sensitivity limiting noise contribution of the gravitational-wave detectors Advanced LIGO and Virgo in the next few years.
F. Badaracco, Jan Harms
semanticscholar +2 more sources
Study on the Equivalence Transformation between Blasting Vibration Velocity and Acceleration [PDF]
SensorsThe evaluation of blasting vibrations primarily hinges on two physical quantities: velocity and acceleration. A significant challenge arises when attempting to reference the two types of vibration data in relation to one another, such as different types ...
Chong Yu +4 more
doaj +2 more sources
地震科学进展, 2023 Based on the analysis of the observation records from the three devices used by the Jiangxi Earthquake Early Warning Network (seismometer, strong seismometer, and intensity meter), the RMS value and power spectrum of the station site background noise ...
Jun Dong, Yuewen Xiang, Qingwu Li
doaj +1 more source
The Development of a New IFOG-Based 3C Rotational Seismometer
Italian National Conference on Sensors, 2021 For many years, seismological research mainly focuses on translational ground motions due to the lack of appropriate sensors. However, because of the development of devices based on Sagnac effect, measuring rotational waves directly comes available.
Yuwen Cao +9 more
semanticscholar +1 more source
Repeating Low Frequency Icequakes in the Mont‐Blanc Massif Triggered by Snowfalls
Journal of Geophysical Research: Earth Surface, Volume 127, Issue 12, December 2022., 2022 Abstract Deformation mechanisms of glaciers are highly sensitive to basal temperature; the motion of temperate glaciers is dominated by basal slip while cold‐based glaciers deform mainly by internal creep. While basal slip is usually aseismic, unstable slip sometimes occurs and can be detected by seismometers.
Agnès Helmstetter
wiley +1 more source
Bulletin of The Seismological Society of America (BSSA), 2021 The application of ambient seismic noise cross-correlation to distributed acoustic sensing (DAS) data recorded by subsurface fiber-optic cables has revolutionized our ability to obtain high-resolution seismic images of the shallow subsurface.
A. Nayak, J. Ajo-Franklin
semanticscholar +1 more source