Zobrazeno 1 - 10
of 73
pro vyhledávání: '"Bryan J. Travis"'
Autor:
Bryan J. Travis, Gerald Schubert
Publikováno v:
Icarus. 250:32-42
Despite its small size, Enceladus emits considerable heat, especially at its south pole, even long after simple thermal models predict it should be frozen. Several sources of energy have been proposed as responsible for this heating, such as tidal di
Autor:
George Zyvoloski, K. C. Lewis, Philip H. Stauffer, Bryan J. Travis, Peter C. Lichtner, Joshua S. Stein
Publikováno v:
Transport in Porous Media. 105:471-485
We present a revised form of the energy balance for the coupled thermodynamics of liquid water flowing in porous media and give examples of situations where a commonly used formulation based on transport of enthalpy leads to erroneous results. Assumi
Publikováno v:
Journal of Geophysical Research: Planets. 118:877-890
[1] Recent discovery of transient ice deposits uncovered by five small craters between 40 and 55°N latitude, reinterpretation of MONS neutron data that indicate the wide-spread presence of ice within 1 m of the surface at midlatitudes (down to 30°N
Publikováno v:
Icarus. 218:1006-1019
A whole-moon numerical model of Europa is developed to simulate its thermal history. The thermal evolution covers three phases: (i) an initial, roughly 0.5 Gyr-long period of radiogenic heating and differentiation, (ii) a long period from 0.5 Gyr to
Publikováno v:
Earth and Planetary Science Letters. 296:235-243
Carbonaceous chondrites are a class of primitive meteorites that likely represent early solar system materials, thus providing critical insights about planetary evolution. However, evidence shows that they have undergone considerable processing. Eluc
Publikováno v:
Icarus. 208:101-117
We simulate the evolution of post-impact hydrothermal systems within 45 km and 90 km diameter craters on Mars. We focus on the effects of freezing, which alters the permeability structure and fluid flow compared with unfrozen cases. Discharge rates,
Publikováno v:
Computers & Mathematics with Applications. 55(9):2118-2133
We present a closed form solution for the upscaled diffusion coefficient and derive a first-order homogenized approximation to linear flow equations with periodic and rapidly oscillating coefficients. The coefficients are defined as step functions de
Publikováno v:
Icarus. 188:345-355
Pre-Cassini images of Saturn's small icy moon Enceladus provided the first indication that this satellite has undergone extensive resurfacing and tectonism. Data returned by the Cassini spacecraft have proven Enceladus to be one of the most geologica
Autor:
C. A. Hier-Majumder, Bryan J. Travis, E. Bélanger, A. P. Vincent, Dave A. Yuen, Guillaume Richard
Publikováno v:
Geophysical Journal International. 166:907-922
SUMMARY This paper focuses on the role of sensitivity analysis in studies of water transport in the environmental and geophysical sciences. Sensitivity analysis is useful in model development to determine how changes in parameter input will affect a
Autor:
Gerald Schubert, Bryan J. Travis
Publikováno v:
Earth and Planetary Science Letters. 240:234-250
Numerical simulations of the thermal evolution of carbonaceous chondrite parent bodies indicate a period of several million years during which convective motion of water could occur. The present study considers variations of permeability, radiogenic