Results 71 to 80 of about 34,992 (234)

Exploring wave propagation behaviors in rock: A grain‐based perspective on mineral structures

Deep Underground Science and Engineering, EarlyView.
This study investigates wave propagation in rock at the grain scale using a grain‐based model, revealing that mineral elastic modulus significantly influences wave attenuation while grain size and distribution have limited effects. A novel peak particle velocity attenuation prediction model is proposed and validated for grain‐scale wave propagation ...
Zhiyi Liao, Jiachen Xu, Kai Zhang, Changtai Zhou   +3 more
wiley   +1 more source

Study on the method of comprehensive geophysical prospecting for detecting the thin overburden buried faults in limestone area in northern Henan

Shuiwen dizhi gongcheng dizhi
Accurate 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
doaj   +1 more source

LitMod2D_2.0: An Improved Integrated Geophysical‐Petrological Modeling Tool for the Physical Interpretation of Upper Mantle Anomalies

Geochemistry, Geophysics, Geosystems, 2020
LitMod2D integrates geophysical and petrological data sets to produce the thermal, density, and seismic velocity structure of the lithosphere and upper mantle.
Ajay Kumar, Manel Fernàndez, Ivone Jiménez‐Munt, Montserrat Torne, Jaume Vergés, Juan Carlos Afonso   +5 more
doaj   +1 more source

Re-pressurized magma at Mt. Etna, Italy, may feed eruptions for years

Communications Earth & Environment, 2021
Melt accumulating in multiple reservoirs beneath Mt Etna could feed eruptions for decades to come, according to detailed seismic tomography modelling.
Pasquale De Gori, Elisabetta Giampiccolo, Ornella Cocina, Stefano Branca, Carlo Doglioni, Claudio Chiarabba   +5 more
doaj   +1 more source

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., Daubechies, Ingrid, Loris, Ignace, Nolet, Guust   +3 more
core   +2 more sources

Gaborlet‐guided sparse filtering: A novel intelligent method for lithology identification by vibration signals while drilling

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, Danqi Zhang, Zhenqi Song, Jinrui Wang, Qi Wang, Heqing Liu   +5 more
wiley   +1 more source

New Theory of the Earth [PDF]

, 2007
New Theory of the Earth is an interdisciplinary advanced textbook on all aspects of the interior of the Earth and its origin, composition, and evolution: geophysics, geochemistry, dynamics, convection, mineralogy, volcanism, energetics and thermal ...
Anderson, Don L.
core   +2 more sources

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, Xiaolong Wang, Xiao Chen, Dong Liu, Zhenhui Kang, Cheng Zhu   +5 more
wiley   +1 more source

Resolving Continental Magma Reservoirs With 3D Surface Wave Tomography

Geochemistry, Geophysics, Geosystems, 2022
Surface wave tomography is widely used to improve our understanding of continental magma reservoirs that may be capable of fueling explosive volcanic eruptions.
Ross Maguire, Brandon Schmandt, Min Chen, Chengxin Jiang, Jiaqi Li, Justin Wilgus   +5 more
doaj   +1 more source

Low‐Cost Friction‐Based Force‐Limiting Connection With Reduced Sensitivity to Machining Tolerances and Accelerated Repairability

Earthquake Engineering &Structural Dynamics, EarlyView.
ABSTRACT This paper presents a novel yet practical friction‐based structural component design for low‐damage earthquake‐resistant structures. The proposed connection design is based on a conventional slotted‐bolted configuration with the novelty being the use of loose steel washer plates to establish the friction‐sliding interface.
Kaixin Chen, Georgios Tsampras, Chung‐Che Chou, Huang‐Zuo Lin, Chi‐Jeng Wu, Alvaro Córdova, Chia‐Ming Uang, Shih‐Ho Chao   +7 more
wiley   +1 more source