Water Pressure in Intra- and Subglacial Channels
نویسندگان
چکیده
منابع مشابه
Creep closure of channels in deforming subglacial till
We examine theoretically the creep closure of subglacial tunnels cut into basal till, generalizing Nye's classical analysis of tunnel closure in glacier ice to rheologies in which the creep rate depends on effective pressure (the difference between total pressure and pore-water pressure). The solutions depend critically on a dimensionless permeability parameter. For the appealingly simple Boult...
متن کاملIce-shelf tidal flexure and subglacial pressure variations
We develop a model of an ice shelf-ice stream system as a viscoelastic beam partially supported by an elastic foundation. When bedrock near the grounding line acts as a fulcrum, leverage from the ice shelf dropping at low tide can cause significant ð 1 cmÞ uplift in the first few kilometers of grounded ice. This uplift and the corresponding depression at high tide lead to basal pressure variati...
متن کاملIntra-Abdominal Pressure Correlates with Extracellular Water Content
BACKGROUND Secondary increase in intra-abdominal pressure (IAP) may result from extra-abdominal pathology, such as massive fluid resuscitation, capillary leak or sepsis. All these conditions increase the extravascular water content. The aim of this study was to analyze the relationship between IAP and body water volume. MATERIAL AND METHODS Adult patients treated for sepsis or septic shock wi...
متن کاملsimulation and experimental studies for prediction mineral scale formation in oil field during mixing of injection and formation water
abstract: mineral scaling in oil and gas production equipment is one of the most important problem that occurs while water injection and it has been recognized to be a major operational problem. the incompatibility between injected and formation waters may result in inorganic scale precipitation in the equipment and reservoir and then reduction of oil production rate and water injection rate. ...
Sediment behavior controls equilibrium width of subglacial channels
Flow-frictional resistance at the base of glaciers and ice sheets is strongly linked to subglacial water pressure. Understanding the physical mechanisms that govern meltwater fluxes in subglacial channels is hence critical for constraining variations in ice flow. Previous mathematical descriptions of softbed subglacial channels assume a viscous till rheology, which is inconsistent with laborato...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of Glaciology
سال: 1972
ISSN: 0022-1430,1727-5652
DOI: 10.3189/s0022143000022188