Dynamics of subglacial floods

A. C. Fowler

doi:10.1098/rspa.2008.0488

Dynamics of subglacial floods

A. C. Fowler

Department of Mathematics and Statistics

Research output: Contribution to journal › Article › peer-review

Abstract

The Nye model of jökulhlaups is able to explain both their periodicity and even the detailed shape of the flood hydrograph. In this paper, we show how the model can be used to predict the shape of the hydrographs from the subglacial lake Grímsvötn beneath Vatnajökull in Iceland, and we comment on three particular issues that have proved contentious in the application of the Nye model: the role of water temperature; the shape of the flood channel; and the value of the bed roughness coefficient.

Original language	English
Pages (from-to)	1809-1828
Number of pages	20
Journal	Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences
Volume	465
Issue number	2106
DOIs	https://doi.org/10.1098/rspa.2008.0488
Publication status	Published - 8 Jun 2009

Keywords

Grímsvötn
Jokulhlaups
Nye model
Vatnajökull

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10.1098/rspa.2008.0488

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AB - The Nye model of jökulhlaups is able to explain both their periodicity and even the detailed shape of the flood hydrograph. In this paper, we show how the model can be used to predict the shape of the hydrographs from the subglacial lake Grímsvötn beneath Vatnajökull in Iceland, and we comment on three particular issues that have proved contentious in the application of the Nye model: the role of water temperature; the shape of the flood channel; and the value of the bed roughness coefficient.

KW - Grímsvötn

KW - Jokulhlaups

KW - Nye model

KW - Vatnajökull

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ER -

Dynamics of subglacial floods

Abstract

Keywords

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