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Enthalpy balance theory unifies diverse glacier surge behaviour

Douglas I. Benn, Ian J. Hewitt, Adrian Luckman Orcid Logo

Annals of Glaciology, Volume: 63, Issue: 87-89, Pages: 88 - 94

Swansea University Author: Adrian Luckman Orcid Logo

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DOI (Published version): 10.1017/aog.2023.23

Abstract

It is commonly asserted that there are two distinct classes of glacier surges: slow, long-duration ‘Svalbard-type’ surges, triggered by a transition from cold- to warm-based conditions (thermal switching), and fast, shorter-duration ‘Alaska-type’ surges triggered by a reorganisation of the basal dra...

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Published in: Annals of Glaciology
ISSN: 0260-3055 1727-5644
Published: Cambridge University Press (CUP) 2022
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URI: https://cronfa.swan.ac.uk/Record/cronfa63226
first_indexed 2023-05-24T10:45:39Z
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spelling 2024-09-30T16:11:49.9124584 v2 63226 2023-04-21 Enthalpy balance theory unifies diverse glacier surge behaviour 008cb668b2671b653a88677f075799a9 0000-0002-9618-5905 Adrian Luckman Adrian Luckman true false 2023-04-21 BGPS It is commonly asserted that there are two distinct classes of glacier surges: slow, long-duration ‘Svalbard-type’ surges, triggered by a transition from cold- to warm-based conditions (thermal switching), and fast, shorter-duration ‘Alaska-type’ surges triggered by a reorganisation of the basal drainage system (hydraulic switching). This classification, however, reflects neither the diversity of surges in Svalbard and Alaska (and other regions), nor the fundamental dynamic processes underlying all surges. We argue that enthalpy balance theory offers a framework for understanding the spectrum of glacier surging behaviours while emphasising their essential dynamic unity. In this paper, we summarise enthalpy balance theory, illustrate its potential to explain so-called ‘Svalbard-type’ and ‘Alaska-type’ surges using a single set of principles, and show examples of a much wider range of glacier surge behaviour than previously observed. We then identify some future directions for research, including strategies for testing predictions of the theory against field and remote sensing data, and priorities for numerical model development. Journal Article Annals of Glaciology 63 87-89 88 94 Cambridge University Press (CUP) 0260-3055 1727-5644 Glacier modelling, glacier surges, subglacial processes 1 9 2022 2022-09-01 10.1017/aog.2023.23 COLLEGE NANME Biosciences Geography and Physics School COLLEGE CODE BGPS Swansea University Another institution paid the OA fee 2024-09-30T16:11:49.9124584 2023-04-21T16:05:14.8391053 Faculty of Science and Engineering School of Biosciences, Geography and Physics - Geography Douglas I. Benn 1 Ian J. Hewitt 2 Adrian Luckman 0000-0002-9618-5905 3 63226__27591__9da24e57a6854d5da42477b829f242e4.pdf 63226.pdf 2023-05-24T11:42:52.8956044 Output 2770070 application/pdf Version of Record true This is an Open Access article, distributed under the terms of the Creative Commons Attribution licence (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted re-use, distribution and reproduction, provided the original article is properly cited. true eng http://creativecommons.org/licenses/by/4.0/
title Enthalpy balance theory unifies diverse glacier surge behaviour
spellingShingle Enthalpy balance theory unifies diverse glacier surge behaviour
Adrian Luckman
title_short Enthalpy balance theory unifies diverse glacier surge behaviour
title_full Enthalpy balance theory unifies diverse glacier surge behaviour
title_fullStr Enthalpy balance theory unifies diverse glacier surge behaviour
title_full_unstemmed Enthalpy balance theory unifies diverse glacier surge behaviour
title_sort Enthalpy balance theory unifies diverse glacier surge behaviour
author_id_str_mv 008cb668b2671b653a88677f075799a9
author_id_fullname_str_mv 008cb668b2671b653a88677f075799a9_***_Adrian Luckman
author Adrian Luckman
author2 Douglas I. Benn
Ian J. Hewitt
Adrian Luckman
format Journal article
container_title Annals of Glaciology
container_volume 63
container_issue 87-89
container_start_page 88
publishDate 2022
institution Swansea University
issn 0260-3055
1727-5644
doi_str_mv 10.1017/aog.2023.23
publisher Cambridge University Press (CUP)
college_str Faculty of Science and Engineering
hierarchytype
hierarchy_top_id facultyofscienceandengineering
hierarchy_top_title Faculty of Science and Engineering
hierarchy_parent_id facultyofscienceandengineering
hierarchy_parent_title Faculty of Science and Engineering
department_str School of Biosciences, Geography and Physics - Geography{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Biosciences, Geography and Physics - Geography
document_store_str 1
active_str 0
description It is commonly asserted that there are two distinct classes of glacier surges: slow, long-duration ‘Svalbard-type’ surges, triggered by a transition from cold- to warm-based conditions (thermal switching), and fast, shorter-duration ‘Alaska-type’ surges triggered by a reorganisation of the basal drainage system (hydraulic switching). This classification, however, reflects neither the diversity of surges in Svalbard and Alaska (and other regions), nor the fundamental dynamic processes underlying all surges. We argue that enthalpy balance theory offers a framework for understanding the spectrum of glacier surging behaviours while emphasising their essential dynamic unity. In this paper, we summarise enthalpy balance theory, illustrate its potential to explain so-called ‘Svalbard-type’ and ‘Alaska-type’ surges using a single set of principles, and show examples of a much wider range of glacier surge behaviour than previously observed. We then identify some future directions for research, including strategies for testing predictions of the theory against field and remote sensing data, and priorities for numerical model development.
published_date 2022-09-01T05:12:13Z
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score 11.444473

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