Results 51 to 60 of about 34,992 (234)

Ambient noise multimode surface wave tomography

Progress in Earth and Planetary Science
Seismic techniques using earthquakes are powerful tools for exploring the Earth’s internal structure. However, the earthquake distribution limits the spatial resolution.
Kiwamu Nishida, Ryota Takagi, Akiko Takeo   +2 more
doaj   +1 more source

Lessons learned from marine refraction seismic experiments in the Ligurian Sea

BSGF - Earth Sciences Bulletin
Wide-angle refraction seismic experiments are generally executed along 2D profiles. In this study, we investigate the potential and limitations of using adjacent 2D wide-angle seismic profiles for 3D tomography.
Murray-Bergquist Louisa, Dannowski Anke, Lange Dietrich, Kopp Heidrun, Beniest Anouk   +4 more
doaj   +1 more source

Lateral variations in the crustal structure of the Indo-Eurasian collision zone [PDF]

, 2018
We thank Michael Ritzwoller and two anonymous reviewers for constructive comments that have helped improve the manuscript. The majority of the seismic data used in this study were downloaded from IRIS DMC.
Gilligan, Amy, Priestley, Keith
core   +1 more source

Experimental study on dynamic behavior analysis of coal and its acoustic emission response characteristics under impact failure

Deep Underground Science and Engineering, EarlyView.
Based on acoustic emission response characteristics, it can be more accurate to identify the damage evolution process of coal under the combined dynamic and static loads, reveal the moment corresponding to coal damage, and identify the characteristics of coal failure. The research results are conducive to the further use of acoustic emission monitoring
Wei Zhang, Huijian Fu, Yingke Liu, Zhaoxi Long, Yang Liu, Tengrui Yang, Yanbo Sun, Mingjun Jiang, Xiaojiang Wen, Yue Niu, Ruixi Cheng   +10 more
wiley   +1 more source

Application of Cross-Hole Tomography for Assessment of Soil Stabilization by Grout Injection

Geosciences, 2019
Currently, the spread of megalopolises poses an ever-increasing necessity for underground space development for the purpose of the arrangement of transport communications, underground parking areas, trade areas, etc.
Mikhail Lebedev, Kirill Dorokhin
doaj   +1 more source

Investigating the Apparent Seismic Diffusivity of Near-Receiver Geology at Mount St. Helens Volcano, USA [PDF]

, 2017
Acknowledgments: The SAGES VALIDATE forum provided travel money for the discussion of the methodology within De Siena and Benson.Peer reviewedPublisher ...
Benson, Phil, de Siena, Luca, King, Thomas, Vinciguerra, Sergio   +3 more
core   +4 more sources

Effects of joint geometric configurations on cyclic shear behavior of intermittent joints under constant normal stiffness conditions

Deep Underground Science and Engineering, EarlyView.
The present manuscript explored the effects of joint configurations on the cyclic shear behavior of intermittent joints for the first time. The cyclic shear response, shear strength degradation, dilation characteristics evolution, frictional property, fractal dimension, and dissipative energy were further analyzed during shear cycles, which is crucial ...
Bin Wang, Yujing Jiang, Qiangyong Zhang, Hongbin Chen   +3 more
wiley   +1 more source

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

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