Zobrazeno 1 - 10 of 52 pro vyhledávání: '"D. A. Yuen"'
1
Akademický článek
Nonlinear multidimensional scaling and visualization of earthquake clusters over space, time and feature space
Autor: W. Dzwinel, D. A. Yuen, K. Boryczko, Y. Ben-Zion, S. Yoshioka, T. Ito
Publikováno v: Nonlinear Processes in Geophysics, Vol 12, Iss 1, Pp 117-128 (2005)
We present a novel technique based on a multi-resolutional clustering and nonlinear multi-dimensional scaling of earthquake patterns to investigate observed and synthetic seismic catalogs. The observed data represent seismic activities around the Jap
Externí odkaz: https://doaj.org/article/6aa785d07fbe41e8b2da5093ac3c5a51
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2
Akademický článek
Data assimilation for plume models
Autor: C. A. Hier Majumder, E. Bélanger, S. DeRosier, D. A. Yuen, A. P. Vincent
Publikováno v: Nonlinear Processes in Geophysics, Vol 12, Iss 2, Pp 257-267 (2005)
We use a four-dimensional variational data assimilation (4D-VAR) algorithm to observe the growth of 2-D plumes from a point heat source. In order to test the predictability of the 4D-VAR technique for 2-D plumes, we perturb the initial conditions and
Externí odkaz: https://doaj.org/article/76e8c15a958a4b44b1d1ff933375cb35
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3
Akademický článek
Controlling thermal chaos in the mantle by positive feedback from radiative thermal conductivity
Autor: F. Dubuffet, D. A. Yuen, E. S. G. Rainey
Publikováno v: Nonlinear Processes in Geophysics, Vol 9, Iss 3/4, Pp 311-323 (2002)
The thermal conductivity of mantle materials has two components, the lattice component klat from phonons and the radiative component krad due to photons. These two contributions of variable thermal conductivity have a nonlinear dependence in the temp
Externí odkaz: https://doaj.org/article/ad9d39c514cb443a8b7a4bfadbe0a563
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4
Akademický článek
Non-equilibrium effects of core-cooling and time-dependent internal heating on mantle flush events
Autor: D. A. Yuen, S. Balachandar, V. C. Steinbach, S. Honda, D. M. Reuteler, J. J. Smedsmo, G. S. Lauer
Publikováno v: Nonlinear Processes in Geophysics, Vol 2, Iss 3/4, Pp 206-221 (1995)
We have examined the non-equilibrium effects of core-cooling and time-dependent internal-heating on the thermal evolution of the Earth's mantle and on mantle flush events caused by the two major phase transitions. Both two- and three-dimensional mode
Externí odkaz: https://doaj.org/article/e9e10fec86e44cbcb75f990febf52cf3
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7
Mass-dependent dynamics of terrestrial exoplanets using ab initio mineral properties
Autor: A. P. van den Berg, D. A. Yuen, Michael H. G. Jacobs, Renata M. Wentzcovitch, Koichiro Umemoto
Publikováno v: Icarus, 317, 412-426. Academic Press Inc.
Icarus, 317, 412. Academic Press Inc.
van den Berg, A P, Yuen, D A, Umemoto, K, Jacobs, M H G & Wentzcovitch, R M 2019, ' Mass-dependent dynamics of terrestrial exoplanets using ab initio mineral properties ', Icarus, vol. 317, pp. 412-426 . https://doi.org/10.1016/j.icarus.2018.08.016
We present new modelling results for the internal structure and convective dynamics of large terrestrial (rocky) exoplanets. By going out to 20 Earth masses our results show that pressure and temperature can reach several Terapascal (TPa) and 10000 K
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f23f47fb7e2ac3a5cb71c9fbb0f9d3a1
https://research.vu.nl/en/publications/0dcebbba-6ef0-4791-b711-eac023440925
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8
Structural Reliability Assessment of Aging Ships Using the Concept of Level of Certainty
Autor: Yoo Sang Choo, Lyuben D. Ivanov, D. Z. Yuen, G. Wang
Publikováno v: Marine Technology and SNAME News. 45:132-146
The input data in strength calculations (e.g., loads, geometric, and material properties) may have different levels of certainty/uncertainty. In most cases, the level of certainty of the result (e.g., stresses) is unknown. The knowledge of this certa
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::04b7774229553fc633aa091ca25df512
https://doi.org/10.5957/mt1.2008.45.3.132
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9
The combined influences of variable thermal conductivity, temperature- and pressure-dependent viscosity and core–mantle coupling on thermal evolution
Autor: Emma S.G. Rainey, D. A. Yuen, A. P. van den Berg
Publikováno v: Physics of the Earth and Planetary Interiors. 149:259-278
Most convection studies of thermal history have not considered explicitly the thermal interaction between the mantle flow and the core. We have investigated the influences of variable thermal conductivity and variable viscosity (temperature- and pres
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::6f23abb81c3364fa8d9156b39ee57b4a
https://doi.org/10.1016/j.pepi.2004.10.008
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10
Influences of dissipation and rheology on mantle plumes coming from the D″-layer
Autor: D. A. Yuen, Bertram Schott
Publikováno v: Physics of the Earth and Planetary Interiors. 146:139-145
We have investigated the possibilities for thermochemical convective instability of a low viscous, dense D″-layer heated from below, in either the extended Boussinesq approximation (i.e. with dissipation) or the Boussinesq approximation only. We fi
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::c72b2f16bcf116017a8c8136f713851f
https://doi.org/10.1016/j.pepi.2003.07.026
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