Testing a numerical glacial hydrological model using spring speed-up events and outburst floods

Details Testing a numerical glacial hydrological model using spring speed-up events and outburst floods Testing a numerical glacial hydrological model using spring speed-up events and outburst floods

Sep 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004georl..3118503k&link_type=abstract

Geophysical Research Letters, Volume 31, Issue 18, CiteID L18503

Physics

Geophysics

7

Hydrology: Glaciology (1863), Hydrology: Snow And Ice (1827), Mathematical Geophysics: Modeling

Scientific paper

We describe a numerical model of a glacial-hydrologic system that reproduces the salient features of two hydrological and ice motion events commonly observed on temperate alpine glaciers. These include the pattern of ice sliding and water discharge characteristic of spring speed-up events, and the triggering and structure of outburst floods from ice-marginal lakes. These behaviors result from strong internal feedbacks between water storage in englacial macro-pores or an ice-marginal lake, ice motion by sliding and deformation, and a subglacial hydrologic system consisting of a slow-flow linked cavity network and a fast-flow centerline conduit.

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