Zobrazeno 1 - 10
of 1 354
pro vyhledávání: '"A. Griera"'
Autor:
Y. Yu, A. Griera, E. Gomez‐Rivas, P. D. Bons, D. García‐Castellanos, B. Hao, R. A. Lebensohn, M.‐G. Llorens
Publikováno v:
Geochemistry, Geophysics, Geosystems, Vol 25, Iss 9, Pp n/a-n/a (2024)
Abstract Upper mantle deformation is mainly controlled by the mechanical behavior of olivine. Crystallographic preferred orientations (CPOs) develop in olivine due to crystal‐plastic deformation during mantle flow, where the a‐axes of olivine pol
Externí odkaz:
https://doaj.org/article/1742ce8d1562410e8b05f0c587d42b06
Autor:
M.-G. Llorens, A. Griera, P. D. Bons, I. Weikusat, D. J. Prior, E. Gomez-Rivas, T. de Riese, I. Jimenez-Munt, D. García-Castellanos, R. A. Lebensohn
Publikováno v:
The Cryosphere, Vol 16, Pp 2009-2024 (2022)
Creep due to ice flow is generally thought to be the main cause for the formation of crystallographic preferred orientations (CPOs) in polycrystalline anisotropic ice. However, linking the development of CPOs to the ice flow history requires a proper
Externí odkaz:
https://doaj.org/article/fad3070250154be4bf2eff3bb4cd3dfd
Autor:
C. Qi, D. J. Prior, L. Craw, S. Fan, M.-G. Llorens, A. Griera, M. Negrini, P. D. Bons, D. L. Goldsby
Publikováno v:
The Cryosphere, Vol 13, Pp 351-371 (2019)
Synthetic polycrystalline ice was sheared at temperatures of −5, −20 and −30 ∘C, to different shear strains, up to γ=2.6, equivalent to a maximum stretch of 2.94 (final line length is 2.94 times the original length). Cryo-electron backscat
Externí odkaz:
https://doaj.org/article/cd6d671d7cf64738ab452b17d660941e
Publikováno v:
The Cryosphere, Vol 10, Iss 6, Pp 3071-3089 (2016)
We performed numerical simulations on the microdynamics of ice with air inclusions as a second phase. Our aim was to investigate the rheological effects of air inclusions and explain the onset of dynamic recrystallization in the permeable firn. The s
Externí odkaz:
https://doaj.org/article/f3521a756f0e4a859475bb3894a55945
Autor:
D. Jansen, M.-G. Llorens, J. Westhoff, F. Steinbach, S. Kipfstuhl, P. D. Bons, A. Griera, I. Weikusat
Publikováno v:
The Cryosphere, Vol 10, Iss 1, Pp 359-370 (2016)
Disturbances on the centimetre scale in the stratigraphy of the North Greenland Eemian Ice Drilling (NEEM) ice core (North Greenland) can be mapped by an optical line scanner as long as the ice has visual layering, such as, for example, cloudy bands.
Externí odkaz:
https://doaj.org/article/47becce0d5074ffba804706326460d24
Publikováno v:
Solid Earth, Vol 6, Iss 2, Pp 497-514 (2015)
Fractures in rocks deformed under dominant ductile conditions typically form simultaneously with viscous flow. Material strength plays a fundamental role during fracture development in such systems, since fracture propagation can be strongly reduced
Externí odkaz:
https://doaj.org/article/4c7580bb829040efa47671666db2c34d
Autor:
I. CORRAL, A. GRIERA, D. GÓMEZ-GRAS, M. CORBELLA, À. CANALS I SABATÉ, M. PINEDA FALCONETT, E. CARDELLACH
Publikováno v:
Geologica Acta, Vol 9, Iss 3-4 (2011)
The Cerro Quema district, located on the Azuero Peninsula, Panama, is part of a large regional hydrothermal system controlled by regional faults striking broadly E-W, developed within the Río Quema Formation. This formation is composed of volcanic,
Externí odkaz:
https://doaj.org/article/1f082f0393094b76a34825d903d87c31
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