Results 81 to 90 of about 12,094 (271)
Simetris: Jurnal Teknik Mesin, Elektro dan Ilmu Komputer, 2017 Bunker merupakan suatu ruang bawah tanah tempat seismometer dioperasikan. Suhu, kelembaban udara serta arus dan tegangan salah satu faktor yang dapat mempengaruhi kinerja seismometer.
Alhusen Mustarang, Hapsoro Agung Nugroho
doaj
An Overview of Traditional and Next-Generation Earthquake Early Warning Systems
Journal of Advanced Research in Natural and Applied SciencesThe Earthquake Early Warning System generates rapid and effective warnings after detecting an earthquake, before the arrival of destructive waves to the areas that may be affected. In this way, it is aimed to minimize the loss of life and property.
Deniz Çaka +3 more
doaj +1 more source
Comparing the Nano-Resolution Depth Sensor to the Co-located Ocean Bottom Seismometer at MARS [PDF]
arXiv, 2013 Data from earthquake measurements using a Nano-Resolution Pressure Sensor and a co-located Ocean Bottom Seismometer have been compared and analyzed. It is shown that the Nano-Resolution Pressure Sensor can serve as a vertical OBS. Moreover, using the pressure sensor in conjunction with a seismometer helps to separate the ocean and seismic signals.
arxiv
Underwater seismometer validation
Instrumentation viewpoint, 2009 This work verifies and validates the calibration in a marine geophone by means of a hyperbaric chamber before and after the pressure underwater laboratory test. The objective is to characterise the transfer function according to the frequency of coupling between the geophone and the sediment.
Roset Juan, Francesc Xavier +2 more
openaire +3 more sources
Geophysical Research Letters, Volume 52, Issue 8, 28 April 2025.Abstract Numerous studies demonstrated a huge potential for ionospheric total electron content (TEC) measurements to be included in earthquake and tsunami risk assessments. However, up to now, only a few methodologies or tools can be used in near‐real‐time (NRT) for these purposes.
S. A. Sanchez +3 more
wiley +1 more source
Creep-Enhanced Low-Frequency Sensitivity of Seismometers [PDF]
arXiv, 2005 The frequency response of a seismometer is typically assumed to be the textbook case of a viscous damped, simple harmonic oscillator. Real mechanical oscillators are not ideal, and the damping at low frequencies, due to internal friction, is presently too poorly understood to describe from first principles.
arxiv
Detecting local earthquakes via fiber-optic cables in telecommunication conduits under Stanford University campus using deep learning [PDF]
arXiv, 2022 With fiber-optic seismic acquisition development, continuous dense seismic monitoring is becoming increasingly more accessible. Repurposing fiber cables in telecommunication conduits makes it possible to run seismic studies at low cost, even in locations where traditional seismometers are not easily installed, such as in urban areas.
arxiv
A fiber-optic interferometric seismometer
Journal of Lightwave Technology, 1987 A fiber-optic interferometric sensor has been developed which consists of a seismic mass of 520 gm supported by two rubber mandrels, each wound with a single layer of single-mode optical fiber 6.5 m long. One end of each fiber is cleaved to enhance reflection.
Gardner, D.L. +4 more
openaire +3 more sources
Plant Resonance of Seismometers [PDF]
The Journal of the Acoustical Society of America, 1957 A seismometer resting on an elastic medium can be regarded as a simple damped oscillator. Methods for measuring the “plant” resonance of seismometers are discussed along with the various parameters affecting the resonance. Laboratory measurements on sand and rubber, and field measurements on different types of soils were made using an electromechanical
James T. Wilson, D. E. Willis
openaire +2 more sources
Infrasound Unmasks Flow Turbulence as an Additional Seismic Source in Debris Flows
Geophysical Research Letters, Volume 52, Issue 8, 28 April 2025.Abstract 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‐induced waves at the flow surface.
Giacomo Belli +3 more
wiley +1 more source