Results 61 to 70 of about 3,377 (214)
Geophysical Research Letters, Volume 52, Issue 20, 28 October 2025.Abstract Precise position and geometry of the subducted slab are crucial for deciphering subduction zone volcanism. This is particularly important in the southern Costa Rican subduction zone, where the Cocos Ridge subducted at ∼2–3 Ma, coincident with the uplift of the Talamanca Range but later than the arc volcanism cessation (∼5–8 Ma). Here, we apply
Mingye Feng +5 more
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Nostradamus: The radar that wanted to be a seismometer [PDF]
Geophysical Research Letters, 2010 Surface waves emitted after large earthquakes are known to induce, by dynamic coupling, atmospheric infrasonic waves propagating upward through the neutral and ionized atmosphere. Those waves have been detected in the past at ionospheric heights using a variety of techniques, such as HF Doppler sounding or GPS receivers.
Philippe Lognonné +4 more
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Geophysical Research Letters, Volume 52, Issue 20, 28 October 2025.Abstract Distributed acoustic sensing (DAS), which transforms a fiber optic cable into an array of high frequency strainmeters, has the potential to help us characterize earthquakes with a dense sampling of measurements. While earthquake focal mechanisms are frequently determined using P‐wave polarities and S/P amplitude ratios with inertial ...
Robert J. Skoumal +3 more
wiley +1 more source
A device for calibrating and metrological verification of digital seismic recorders
Геофизический журнал, 2014 Periodic temporary change properties seismometrological own equipment or foreign develop-ment requires periodic their engineering studies and measurement control. In the period of the USSM is made on test seismometer calibration devices located in Russia.
S. V. Shcherbina
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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
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Geophysical Research Letters, Volume 52, Issue 20, 28 October 2025.Abstract We use distributed acoustic sensing along a submarine fiber‐optic cable to provide the first high‐resolution two‐dimensional shear‐wave velocity (Vs) model of the North Anatolian Fault (NAF) in the Marmara Sea. Using 7 days of ambient noise recordings, we extract Scholte wave dispersion curves via slant‐stacking and invert for the Vs structure,
Ji Zhang +4 more
wiley +1 more source
Eos, Transactions American Geophysical Union, 1935 This paper discusses the advantages of seismometers that record displacement over instruments that measure velocity or acceleration. It shows that a portable seismometer using changes in capacitance between condenser‐plates to produce proportionate changes of current in an oscillograph has many good characteristics, chief of which are the ease and ...
openaire +2 more sources
Seismic Signals Monitor Debris‐Flow Erosion and Channel Elevation
Geophysical Research Letters, Volume 52, Issue 20, 28 October 2025.Abstract Channel erosion not only amplifies debris‐flow magnitude and impact but also reshapes local geomorphology. However, the destructive and infrequent nature of debris flows makes in situ monitoring of channel‐bed erosion processes and flow characteristics challenging.
Zhen Zhang +4 more
wiley +1 more source
Mapping Geothermal Fluids Using Seismic Absorption and Scattering: A Case Study From Aluto Volcano
Geophysical Research Letters, Volume 52, Issue 19, 16 October 2025.Abstract Seismic attenuation tomography is used to map fluids and fractures beneath the Aluto volcano geothermal field of the Main Ethiopian Rift. We present 3D models of peak delay (Δlog10Tpd ${\Delta }{\log }_{10}\left({T}_{pd}\right)$) and inverse coda quality factor (Qc−1 ${Q}_{c}^{-1}$) which are proxies for seismic scattering and absorption. High
Tesfahiwet Yemane +3 more
wiley +1 more source
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
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