Hydrology and Land Surface Studies
Testing a numerical glacial hydrological model using spring speed-up events and outburst floods
Article first published online: 28 SEP 2004
Copyright 2004 by the American Geophysical Union.
Geophysical Research Letters
Volume 31, Issue 18, September 2004
How to Cite
2004), Testing a numerical glacial hydrological model using spring speed-up events and outburst floods, Geophys. Res. Lett., 31, L18503, doi:10.1029/2004GL020622., and (
- Issue published online: 28 SEP 2004
- Article first published online: 28 SEP 2004
- Manuscript Accepted: 12 AUG 2004
- Manuscript Revised: 26 JUL 2004
- Manuscript Received: 27 MAY 2004
 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.