Zobrazeno 1 - 10
of 206
pro vyhledávání: '"Katz, Richard F"'
Drainage of supraglacial lakes to the ice-sheet bed can occur when a hydrofracture propagates downward, driven by the weight of the water in the lake. For supraglacial lakes in the grounding zones of Antarctic glaciers, the mechanics of drainage is c
Externí odkaz:
http://arxiv.org/abs/2311.01249
Partially molten rock is a densely packed, melt-saturated, granular medium, but it has seldom been considered in these terms. In this manuscript, we extend the continuum theory of partially molten rock to incorporate the physics of granular media. Ou
Externí odkaz:
http://arxiv.org/abs/2309.09688
Publikováno v:
Proceedings of the National Academy of Sciences, 2024
Subsurface sandstone reservoirs sealed by overlying, low-permeability layers provide capacity for long-term sequestration of anthropogenic waste. Leakage can occur if reservoir pressures rise sufficiently to fracture the seal. Such pressures can be g
Externí odkaz:
http://arxiv.org/abs/2306.17058
Publikováno v:
Proc. R. Soc. A. 479 (2023) 2274
Fluid venting phenomena are prevalent in sedimentary basins globally. Offshore, these localised fluid-expulsion events are archived in the geologic record by the resulting pockmarks at the sea-floor. Venting is widely interpreted to occur via hydraul
Externí odkaz:
http://arxiv.org/abs/2210.03654
Basal crevasses are macroscopic structural discontinuities at the base of ice sheets and glaciers. Motivated by observations and the mechanics of elastic fracture, we hypothesise that in the presence of basal water pressure, spatial variations in bas
Externí odkaz:
http://arxiv.org/abs/2204.11697
The size distribution of grains is a fundamental characteristic of polycrystalline solids. In the absence of deformation, the grain-size distribution is controlled by normal grain growth. The canonical model of normal grain growth, developed by Hille
Externí odkaz:
http://arxiv.org/abs/2102.01798
Publikováno v:
Geophysical Journal International, Volume 226, Issue 1, July 2021, Pages 582-609
It is generally accepted that melt extraction from the mantle at mid-ocean ridges (MORs) is concentrated in narrow regions of elevated melt fraction called channels. Two feedback mechanisms have been proposed to explain why these channels grow by lin
Externí odkaz:
http://arxiv.org/abs/2008.13674
Tidal heating is expected to impart significant, non-spherically-symmetric structure to Jupiter's volcanic moon Io. A signature of spatially variable tidal heating is generally sought in observations of surface heat fluxes or volcanic activity, an ex
Externí odkaz:
http://arxiv.org/abs/2008.09022
Magmatic segregation and volcanic eruptions transport tidal heat from Io's interior to its surface. Several observed eruptions appear to be extremely high temperature ($\geq$ 1600 K), suggesting either very high degrees of melting, refractory source
Externí odkaz:
http://arxiv.org/abs/2007.00610
Publikováno v:
Earth Planet. Sci. Lett., 528, 115845 (2019)
Magmatism and volcanism transfer carbon from the solid Earth into the climate system. This transfer may be modulated by the glacial/interglacial cycling of water between oceans and continental ice sheets, which alters the surface loading of the solid
Externí odkaz:
http://arxiv.org/abs/1904.03154