Three-dimensional dynamical model of continental rift propagation and margin plateau formation

1996 ◽  
Vol 101 (B12) ◽  
pp. 27845-27863 ◽  
Author(s):  
John A. Dunbar ◽  
Dale S. Sawyer
Keyword(s):  
Three Dimensional ◽  
Continental Rift ◽  
Dynamical Model ◽  
Rift Propagation

scholarly journals Micrometeorological Modeling of Radiative and Convective Effects with a Building-Resolving Code

2011 ◽  
Vol 50 (8) ◽  
pp. 1713-1724 ◽  
Author(s):  
Yongfeng Qu ◽  
Maya Milliez ◽  
Luc Musson-Genon ◽  
Bertrand Carissimo
Keyword(s):  
Urban Areas ◽  
Fluid Dynamic ◽  
Three Dimensional ◽  
Pollutant Dispersion ◽  
Urban Setting ◽  
Dynamical Model ◽  
Neutral Atmosphere ◽  
Atmospheric Flow ◽  
Ongoing Work ◽  
The One

AbstractIn many micrometeorological studies with computational fluid dynamics, building-resolving models usually assume a neutral atmosphere. Nevertheless, urban radiative transfers play an important role because of their influence on the energy budget. To take into account atmospheric radiation and the thermal effects of the buildings in simulations of atmospheric flow and pollutant dispersion in urban areas, a three-dimensional (3D) atmospheric radiative scheme has been developed in the atmospheric module of the Code_Saturne 3D computational fluid dynamic model. On the basis of the discrete ordinate method, the radiative model solves the radiative transfer equation in a semitransparent medium for complex geometries. The spatial mesh discretization is the same as the one used for the dynamics. This paper describes ongoing work with the development of this model. The radiative scheme was previously validated with idealized cases. Here, results of the full coupling of the radiative and thermal schemes with the 3D dynamical model are presented and are compared with measurements from the Mock Urban Setting Test (MUST) and with simpler modeling approaches found in the literature. The model is able to globally reproduce the differences in diurnal evolution of the surface temperatures of the different walls and roof. The inhomogeneous wall temperature is only seen when using the 3D dynamical model for the convective scheme.

Analysis of powder-snow avalanches using three-dimensional topographic data

1993 ◽  
Vol 18 ◽  
pp. 102-106 ◽  
Author(s):  
Yusuke Fukushima ◽  
Norio Hayakawa
Keyword(s):  
Three Dimensional ◽  
Dynamical Model ◽  
Snow Avalanches ◽  
Topographic Data ◽  
Reasonable Prediction ◽  
Fluid Dynamical Model

A fluid-dynamical model of powder-snow avalanches is developed which takes into account three-dimensional topography and can compute an avalanche’s running course. The model also predicts the variations of height, speed and concentration of snow particles in the avalanche, as well as the level of turbulence. Application of the model to the Maseguchi avalanche, which occurred in 1986 at Niigata, Japan, shows it can provide reasonable prediction of the running course, height and speed of an avalanche.

Three-dimensional SeaMARC II, gravity, and magnetics study of large-offset rift propagation at the Pito Rift, Easter microplate

1991 ◽  
Vol 13 (4) ◽  
pp. 255-285 ◽  
Author(s):  
Fernando Martinez ◽  
David F. Naar ◽  
Thomas B. Reed ◽  
Richard N. Hey
Keyword(s):  
Three Dimensional ◽  
Rift Propagation ◽  
Seamarc Ii ◽  
Easter Microplate

scholarly journals A hierarchical field-level inference approach to reconstruction from sparse Lyman-α forest data

2020 ◽  
Vol 642 ◽  
pp. A139
Author(s):  
Natalia Porqueres ◽  
Oliver Hahn ◽  
Jens Jasche ◽  
Guilhem Lavaux
Keyword(s):  
Spatial Scales ◽  
Three Dimensional ◽  
Coarse Graining ◽  
Forward Model ◽  
Dynamical Model ◽  
Matter Distribution ◽  
One Dimensional ◽  
Field Level ◽  
Sparse Set ◽  
Modelling Approach

We address the problem of inferring the three-dimensional matter distribution from a sparse set of one-dimensional quasar absorption spectra of the Lyman-α forest. Using a Bayesian forward modelling approach, we focus on extending the dynamical model to a fully self-consistent hierarchical field-level prediction of redshift-space quasar absorption sightlines. Our field-level approach rests on a recently developed semiclassical analogue to Lagrangian perturbation theory (LPT), which improves over noise problems and interpolation requirements of LPT. It furthermore allows for a manifestly conservative mapping of the optical depth to redshift space. In addition, this new dynamical model naturally introduces a coarse-graining scale, which we exploited to accelerate the Markov chain Monte-Carlo (MCMC) sampler using simulated annealing. By gradually reducing the effective temperature of the forward model, we were able to allow it to first converge on large spatial scales before the sampler became sensitive to the increasingly larger space of smaller scales. We demonstrate the advantages, in terms of speed and noise properties, of this field-level approach over using LPT as a forward model, and, using mock data, we validated its performance to reconstruct three-dimensional primordial perturbations and matter distribution from sparse quasar sightlines.

Dynamics of continental rift propagation: the end-member modes

2005 ◽  
Vol 229 (3-4) ◽  
pp. 247-258 ◽  
Author(s):  
J.W. Van Wijk ◽  
D.K. Blackman
Keyword(s):  
Continental Rift ◽  
Rift Propagation

scholarly journals A dynamical model of oncotripsy by mechanical cell fatigue: selective cancer cell ablation by low-intensity pulsed ultrasound

2020 ◽  
Vol 476 (2236) ◽  
pp. 20190692
Author(s):  
E. F. Schibber ◽  
D. R. Mittelstein ◽  
M. Gharib ◽  
M. G. Shapiro ◽  
P. P. Lee ◽  
...  
Keyword(s):  
Three Dimensional ◽  
Dynamical Model ◽  
Pulsed Ultrasound ◽  
Cell Dynamics ◽  
Low Intensity Pulsed Ultrasound ◽  
Low Intensity ◽  
Link Type ◽  
Cell Ablation ◽  
Parametric Studies ◽  
Death Kinetics

The method of oncotripsy , first proposed in Heyden & Ortiz (Heyden & Ortiz 2016 J. Mech. Phys. Solids 92 , 164–175 ( doi:10.1016/j.jmps.2016.04.016 )), exploits aberrations in the material properties and morphology of cancerous cells in order to ablate them selectively by means of tuned low-intensity pulsed ultrasound. We propose the dynamical model of oncotripsy that follows as an application of cell dynamics, statistical mechanical theory of network elasticity and ‘birth–death’ kinetics to describe the processes of damage and repair of the cytoskeleton. We also develop a reduced dynamical model that approximates the three-dimensional dynamics of the cell and facilitates parametric studies, including sensitivity analysis and process optimization. We show that the dynamical model predicts—and provides a conceptual basis for understanding—the oncotripsy effect and other trends in the data of Mittelstein et al. (Mittelstein et al. 2019 Appl. Phys. Lett. 116 , 013701 ( doi:10.1063/1.5128627 )), for cells in suspension, including the dependence of cell-death curves on cell and process parameters.

Sign in / Sign up

Export Citation Format

Share Document