Results 61 to 70 of about 10,989 (307)

Application of Experimental Configurations of Seismic and Electric Tomographic Techniques to the Investigation of Complex Geological Structures

Geosciences
The main purpose of this study is the subsurface investigation of two complex geological environments focusing on the improvement of data acquisition and processing parameters regarding electric and seismic tomographic techniques.
Vasileios Gkosios, John D. Alexopoulos, Konstantinos Soukis, Ioannis-Konstantinos Giannopoulos, Spyridon Dilalos, Dimitrios Michelioudakis, Nicholas Voulgaris, Thomas Sphicopoulos   +7 more
doaj   +1 more source

Travel-time seismic tomography for the seismic stratigraphic interpretation of the crust around the San Rafael knickpoint at Coca River, Ecuador [PDF]

Brazilian Journal of Geology
This research aims to obtain tomographic images to interpret the seismic stratigraphic profile around the San Rafael (SR) knickpoint using seismic tomography.
Isabel García López, Sebastián Araujo, Mario Ruiz   +2 more
doaj   +1 more source

Seismic Tomography with Irregular Meshes

, 2013
The current state of seismic tomography using irregular parameterizations is described. A review is given of previous work in the area covering local, regional and global seismic applications. The potential advantage of an irregular parameterization over
Rawlinson, Nick, Sambridge, Malcolm
core   +1 more source

Upper crustal structure of an active volcano from refraction/reflection tomography, Montserrat, Lesser Antilles [PDF]

, 2010
To better understand the volcanic phenomena acting on Montserrat, the SEA-CALIPSO seis-mic experiment (Seismic Experiment with Airgun-source – Caribbean Andesitic Lava Island Precision Seismo-geodetic Observatory) was conducted in 2007 December with the ...
Henstock, T, Kiddle, E.J., Kenedi, CL, Baptie, Brian, Hammond, J.O.S., Minshull, T., Henstock, T., Malin, Peter, Ryan, G., Paulatto, M, Shalev, E, Hammond, James O.S., Hammond, JOS, Paulatto, Michele, Baptie, B., Dean, S, Minshull, T. A., Kiddle, E., Minshull, TA, Malin, P, Voight, B., Paulatto, M., Minshull, T.A., Voight, B, Sparks, R.S.J., Kenedi, C., Dean, S., Sparks, RSJ, Shalev, E., Peirce, C., Baptie, B, Kenedi, C.L., Malin, P., Kiddle, EJ, Ryan, G, Peirce, C   +35 more
core   +1 more source

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

Methodological advances in seismic noise imaging of the Alpine area

Comptes Rendus. Géoscience
Methodological 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, Pedersen, Helle A., Bodin, Thomas, Kästle, Emanuel, Soergel, Dorian, Alder, Chloé, Lu, Yang, Nouibat, Ahmed   +7 more
doaj   +1 more source

Post-stack inversion of seismic reflection data from the belvoir coalfield [PDF]

, 1995
Post-Stack inversion of reflection data in seismic exploration can be used to obtain detailed information about lithology variations in the zone of interest. Generalized Linear Inversion (GLI) has previously been applied as a useful tool to achieve this.
Gang, Tian
core  

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

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

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, Hefeng Dong, Ganpan Ke, Junqiang Song   +3 more
doaj   +1 more source