Results 21 to 30 of about 22,636 (288)
The Urban Seismic Observatory of Catania (Italy): A Real-Time Seismic Monitoring at Urban Scale
Remote Sensing, 2022 We describe the first dense real-time urban seismic–accelerometric network in Italy, named OSU-CT, located in the historic center of Catania. The city lies in the region with the greatest danger, vulnerability, and earthquake exposure in the entire ...
Domenico Patanè +11 more
doaj +1 more source
A Sub-1 Hz Resonance Frequency Resonator Enabled by Multi-Step Tuning for Micro-Seismometer
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 +1 more source
AIP Advances, 2021 A broadband seismometer has been identified as an important scientific instrument that can be deployed on the surface of Earth’s Moon in the near future.
L. A. N. de Paula +6 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. +2 more
openaire +5 more sources
Research on the application of underwater node seismograph in land active source detection
地震科学进展, 2023 The precise timing of the active source excitation is very important. In order to obtain more accurate excitation timing, we debugged and installed the underwater node seismometer observation system in the Liujiaxia active source, and recorded the ...
Dianfeng Sun +5 more
doaj +1 more source
Autocorrelation of the Ground Vibrations Recorded by the SEIS‐InSight Seismometer on Mars
Journal of Geophysical Research: Planets, 2020 Since early February 2019, the SEIS (Seismic Experiment for Interior Structure) seismometer deployed at the surface of Mars in the framework of the InSight mission has been continuously recording the ground motion at Elysium Planitia.
N. Compaire +16 more
semanticscholar +1 more source
Seismometer Detection of Dust Devil Vortices by Ground Tilt [PDF]
, 2015 We report seismic signals on a desert playa caused by convective vortices and dust devils. The long-period (10-100s) signatures, with tilts of ~10$^{-7}$ radians, are correlated with the presence of vortices, detected with nearby sensors as sharp ...
Banerdt, W. Bruce +6 more
core +3 more sources
Low Frequency Tilt Seismology with a Precision Ground Rotation Sensor [PDF]
, 2017 We describe measurements of the rotational component of teleseismic surface waves using an inertial high-precision ground-rotation-sensor installed at the LIGO Hanford Observatory (LHO). The sensor has a noise floor of 0.4 nrad$/ \sqrt{\rm Hz}$ at 50 mHz
Bodin, P. +9 more
core +2 more sources
Extending a Lippmann style seismometer's dynamic range by using a non-linear feedback circuit [PDF]
Advances in Geosciences, 2013 A Lippmann style seismometer (Lippmann and Gebrande, 1983) uses a single-coil velocity-feedback method in order to extend toward lower frequencies a geophone's frequency response.
G. Romeo, G. Spinelli
doaj +1 more source
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. +2 more
core +2 more sources