Zobrazeno 1 - 10
of 12
pro vyhledávání: '"Thomas E. Blum"'
Autor:
Theodor S. Becker, Dirk-Jan van Manen, Carly M. Donahue, Christoph Bärlocher, Nele Börsing, Filippo Broggini, Thomas Haag, Johan O. A. Robertsson, Darren R. Schmidt, Stewart A. Greenhalgh, Thomas E. Blum
Publikováno v:
Physical Review X, Vol 8, Iss 3, p 031011 (2018)
We present a fundamentally new approach to laboratory acoustic and seismic wave experimentation that enables full immersion of a physical wave propagation experiment within a virtual numerical environment. Using a recent theory of immersive boundary
Externí odkaz:
https://doaj.org/article/046038e2d79b4fc684af36a9b71b601c
4D acoustic imaging via an array of 32 sources / 32 receivers is used to monitor hydraulic fracture propagating in a 250~mm cubic specimen under a true-triaxial state of stress. We present a method based on the arrivals of diffracted waves to reconst
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8aaf8e1bb83c753ac0e0e0c90e595d4c
Autor:
Christoph Bärlocher, Thomas Haag, Dirk-Jan van Manen, Theodor S. Becker, Carly M. Donahue, Nele Börsing, Stewart Greenhalgh, Johan O. A. Robertsson, Filippo Broggini, Thomas E. Blum, Darren R. Schmidt
Publikováno v:
Physical Review X, Vol 8, Iss 3, p 031011 (2018)
Physical Review X
Physical Review X, 8 (3)
Physical Review X
Physical Review X, 8 (3)
We present a fundamentally new approach to laboratory acoustic and seismic wave experimentation that enables full immersion of a physical wave propagation experiment within a virtual numerical environment. Using a recent theory of immersive boundary
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::cc29829fbf3ecbb25630c07b60a229ef
https://doaj.org/article/046038e2d79b4fc684af36a9b71b601c
https://doaj.org/article/046038e2d79b4fc684af36a9b71b601c
Publikováno v:
Geophysical Journal International, 197 (2)
Geophysical Journal International, 197 (2)
ISSN:0956-540X
ISSN:1365-246X
ISSN:0956-540X
ISSN:1365-246X
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6b742a6a12c980831bf90e30dc962d6f
http://doc.rero.ch/record/297460/files/ggu039.pdf
http://doc.rero.ch/record/297460/files/ggu039.pdf
Publikováno v:
Proceedings.
The accuracy of scattered Rayleigh waves estimated using an interferometric method is investigated. Summing the cross correlations of the wave fields measured all around the scatterers yields the Green's function between two excitation points. This a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e6d441bff2538093dd0270797df286e1
https://doi.org/10.3997/2214-4609.201413580
https://doi.org/10.3997/2214-4609.201413580
Publikováno v:
SEG Technical Program Expanded Abstracts 2012.
We propose a new method to measure the P-wave anisotropy in core shales with laser ultrasonics. The measured velocities show significant P-wave velocity and attenuation anisotropy. We estimate within 1◦ the fast and slow wave directions in two shal
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f1b77c0747bcfd7848f6c39290bf1372
https://doi.org/10.1190/segam2012-1578.1
https://doi.org/10.1190/segam2012-1578.1
Publikováno v:
The Journal of the Acoustical Society of America. 131(3)
The accuracy of scattered Rayleigh waves estimated using an interferometric method is investigated. Summing the cross correlations of the wave fields measured all around the scatterers yields the Green's function between two excitation points. This a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8cdc93607d96fdebdbf21743cf5a3278
https://pubmed.ncbi.nlm.nih.gov/22423820
https://pubmed.ncbi.nlm.nih.gov/22423820
Publikováno v:
SEG Technical Program Expanded Abstracts 2011.
Remote sensing of fractures with elastic waves is important in fields ranging from seismology to non-destructive testing. While previous analytic descriptions of scattering mostly concern very large or very small fractures (compared to the dominant w
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7d313157ce81fa4c9f9f2e20a185ec50
https://doi.org/10.1190/1.3627646
https://doi.org/10.1190/1.3627646
Autor:
Kasper van Wijk, Thomas E. Blum
Publikováno v:
SEG Technical Program Expanded Abstracts 2010.
Laboratory studies of ultrasonic wave propagation can serve as either scaled modeling of challenges in seismic imaging, or as a way to investigate fundamental advancements in wave propagation. Particularly non-contacting laser ultrasonics provides tr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0af8dee06ff788a5c5342d9ef411fc1f
https://doi.org/10.1190/1.3513356
https://doi.org/10.1190/1.3513356
Publikováno v:
SEG Technical Program Expanded Abstracts 2010.
SUMMARY Surface and body waves inherently coexist in seismic records. Usually, we are interested in the one, while the other is considered unwanted. To complicate things, body and surface waves often overlap in time and space. Hence, separation of th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::28f7c08a2c948fae055c50348af5b0c1
https://doi.org/10.1190/1.3513692
https://doi.org/10.1190/1.3513692