Results 61 to 70 of about 1,022 (162)
Monitoring earthquakes with gravity meters
Geodesy and Geodynamics, 2011 Seismic waves from a magnitude 8.3 earthquake in Japan were consistently recorded by five nearly identical gPhone gravity meters in Colorado. Good correlation was also found in the response of two different types of gravity meters and a standard ...
T.M. Niebauer +3 more
doaj +1 more source
On the Construction of Moho Reflected Shear Wave Phases From Ambient Noise
Geophysical Research Letters, Volume 53, Issue 3, 16 February 2026.Abstract Shear waves reflected from the Moho (SmS) are frequently identified in ambient noise cross‐correlation functions. Despite their consistent appearance across various arrays and studies, the physical origin and generation mechanisms of these SmS phases remain poorly understood.
Jinyun Xie +4 more
wiley +1 more source
Geophysical Research Letters, Volume 53, Issue 3, 16 February 2026.Abstract Compressional and shear wave velocities (Vp, Vs) of candidate Martian deep‐mantle minerals, FeO‐rich ringwoodite ((Mg0.66Fe0.34)2SiO4) and majorite (Mg0.75Fe0.10Al0.26Ca0.07Si0.84O3), were measured up to 25 GPa and 700 K using Brillouin light scattering coupled with externally‐heated diamond anvil cells.
Luo Li +6 more
wiley +1 more source
地震科学进展One of the crucial issues in the field of earthquake forecasting and prediction is the reasonable identification of the tilt, strain, and seismic signals induced by road construction.
Xiaolin Yang
doaj +1 more source
The development of a reference corner cube inertial suspension device [PDF]
Geoscientific Instrumentation, Methods and Data SystemsThe seismometer synchronous observation and zero crossing methods are applied to laser interferometer absolute gravimeter to suppress the vibration interference.
B. Zhang +19 more
doaj +1 more source
Dizhen xuebao现代地震研究依赖于可靠的三分量观测数据，地震计的北分量是否严格指北将直接影响研究的准确性。然而，受台站附近磁异常或人为安装错误的影响，地震计的方位角可能出现偏差。基于东北地区154个固定台站2020年的远震数据，利用P波质点运动方法，估算了每个台站的北向分量方位角，以判断台站地震计是否存在方位角偏转问题。结果表明，84%的台站运行良好，12%的台站存在方位角偏差绝对值过大（＞20°）或分量极性反转等问题。此外，分析后发现方位角偏转较大会导致H-κ叠加方法计算得到的地壳厚度和地震波速比出现偏差。因此 ...
Guangjie Han, Wenze Deng, Zhigao Yang
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NASA’s InSight mission on Mars—first glimpses of the planet’s interior from seismology
Nature Communications, 2020 NASA’s InSight mission is the first lander to deploy a seismometer on a planetary body since more than 40 years. With a year of seismic data from Mars, new discoveries on Mars’ tectonics and interior structure are just emerging.
Brigitte Knapmeyer-Endrun +1 more
doaj +1 more source
Influence of the optical switch’s extinction ratio on the crosstalk in fiber-optic seismometer array
物联网学报, 2022 Optical switch is one of the key components in the time-division multiplexing fiber-optic seismometer array and has significant influence on the crosstalk of the array.The source of crosstalk in the array was analyzed based on differential delay ...
Fei LIU, Xian ZHOU, Min ZHANG
doaj +2 more sources
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 +2 more sources
地震科学进展This article focuses on the co-seismic waveforms collected by the VP type broadband tiltmeters and the BBVS-120 type broadband seismometer at the Chengde seismic station. Using the methods of wavelet analysis and short time Fourier transform, six seismic
Donghui Yang +6 more
doaj +1 more source