Results 71 to 80 of about 35,177 (246)
Deep Underground Science and Engineering, EarlyView.The flowchart illustrates rock specimen testing, vibration signal acquisition, and feature extraction with Gaborlet and sparse filtering for classification. Abstract Traditional lithology identification methods mainly rely on core sampling and well‐logging data.
Jian Hao +5 more
wiley +1 more source
Methodological advances in seismic noise imaging of the Alpine area
Comptes Rendus. GéoscienceMethodological advances in seismic tomography are often driven by the quality of data sets. The dense and homogeneous spatial coverage of the AlpArray seismic network, including hundreds of permanent and temporary broadband stations, has motivated a ...
Paul, Anne +7 more
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Tomographic inversion using $\ell_1$-norm regularization of wavelet coefficients [PDF]
, 2006 We propose the use of $\ell_1$ regularization in a wavelet basis for the solution of linearized seismic tomography problems $Am=d$, allowing for the possibility of sharp discontinuities superimposed on a smoothly varying background.
Dahlen, F. A. +3 more
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Deep Underground Science and Engineering, EarlyView.This review elucidates the velocity–dispersion–attenuation coupling mechanisms of wave propagation in rock masses, compares six representative models, and reveals how pressure, temperature, mineral composition, and anisotropy jointly control dynamic responses in complex geological media.
Jiajun Shu +8 more
wiley +1 more source
Reactive Preservation of Carbonate in Earth's Mantle Transition Zone
Geophysical Monograph Series, Page 167-177., 2020 This book is Open Access. A digital copy can be downloaded for free from Wiley Online Library.
Explores the behavior of carbon in minerals, melts, and fluids under extreme conditions
Carbon trapped in diamonds and carbonate-bearing rocks in subduction zones are examples of the continuing exchange of substantial carbon ...
Jie Li +3 more
wiley +5 more sources
Shuiwen dizhi gongcheng dizhiAccurate identification of the buried faults is crucial for the water conservancy projects construction. Geophysical exploration is an effective method for identifying buried faults quickly.
Rui ZHU, Yunfeng REN, Qi XIONG, Han XUE
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Shear-Wave Tomography Using Ocean Ambient Noise with Interference
Remote Sensing, 2020 Ambient noise carries abundant subsurface structure information and attracts ever-increasing attention in the past decades. However, there are lots of interference factors in the ambient noise in the real world, making the noise difficult to be utilized ...
Guoli Wu +3 more
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Earth, Planets and Space, 2022 We applied reverse time migration (RTM) to offshore wide-angle seismic data acquired with airgun shots and sparsely deployed ocean bottom seismographs (OBSs) for reflection imaging of the Moho discontinuity in the eastern margin of the Sea of Japan ...
Kazuya Shiraishi, Tetsuo No, Gou Fujie
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Remote Sensing, 2022 In conventional cross-correlation (CC)-based wave-equation travel-time tomography, wrong source wavelets can result in inaccurate velocity inversion results, which is known as the source–velocity trade-off.
Wenyong Pan, Ning Ma, Yanfei Wang
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Carbon Dots: An Emerging Frontier for Green and Sustainable Civil Engineering Materials
ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.Traditional civil engineering materials (CE materials) are usually involved with high‐energy consumption during manufacturing, significant maintenance costs, and substantial environmental impacts throughout their life cycles. The progress of nanotechnology is catalyzing a green and sustainable transformation within the field.
Weiwen Hao +5 more
wiley +1 more source