Discussion of ‘Field evidence and hydraulic modeling of a large Holocene jökulhlaup at Jökulsá á Fjöllum channel, Iceland’ by Douglas Howard, Sheryl Luzzadder-Beach and Timothy Beach, 2012
This paper discusses Howard et al. (2012) who reconstruct the peak discharge of a glacial outburst flood, or ‘jökulhlaup’, for part of the Jökulsá á Fjöllum in north-central Iceland. They propose that this flood was the largest on Earth. We consider that the magnitude of the jökulhlaup proposed by H...
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ftustaffordshire:oai:eprints.staffs.ac.uk:1724 2023-05-15T16:47:03+02:00 Discussion of ‘Field evidence and hydraulic modeling of a large Holocene jökulhlaup at Jökulsá á Fjöllum channel, Iceland’ by Douglas Howard, Sheryl Luzzadder-Beach and Timothy Beach, 2012 Carrivick, Jonathan L. TWEED, Fiona Carling, Paul Alho, Petteri Marren, Philip M. Staines, Kate Russell, Andrew J. Rushmer, E. Lucy Duller, Robert 2013 http://eprints.staffs.ac.uk/1724/ https://doi.org/10.1016/j.geomorph.2012.10.024 unknown Elsevier Carrivick, Jonathan L., TWEED, Fiona , Carling, Paul, Alho, Petteri, Marren, Philip M., Staines, Kate, Russell, Andrew J., Rushmer, E. Lucy and Duller, Robert (2013) Discussion of ‘Field evidence and hydraulic modeling of a large Holocene jökulhlaup at Jökulsá á Fjöllum channel, Iceland’ by Douglas Howard, Sheryl Luzzadder-Beach and Timothy Beach, 2012. Geomorphology, 201. pp. 512-519. ISSN 0169555X F800 Physical and Terrestrial Geographical and Environmental Sciences Article PeerReviewed 2013 ftustaffordshire https://doi.org/10.1016/j.geomorph.2012.10.024 2023-03-02T23:14:36Z This paper discusses Howard et al. (2012) who reconstruct the peak discharge of a glacial outburst flood, or ‘jökulhlaup’, for part of the Jökulsá á Fjöllum in north-central Iceland. They propose that this flood was the largest on Earth. We consider that the magnitude of the jökulhlaup proposed by Howard et al. (2012) warrants much more robust field evidence and demands more carefully parameterised hydraulic modelling. For these reasons we firstly (i) present their study in the context of previous research (ii) highlight issues with attributing landforms and sediments to jökulhlaups, and (iii) consider uncertainty regarding the timing and magnitude of jökulhlaups along the Jökulsá á Fjöllum. We argue herein that whilst a range of landforms and sediments that are attributable to jökulhlaups can be observed along the Jökulsá á Fjöllum, these are not necessarily diagnostic of jökulhlaups. Secondly, we critically discuss (iv) the major underlying assumptions of their study, and (v) their calculations and subsequent interpretations. These assessments lead us to consider that the proposal by Howard et al. (2012) of the largest flood on Earth is highly unrealistic, especially when due consideration is given to a possible source area and a trigger mechanism. Keywords Jökulsá á Fjöllum; Iceland; Outburst flood; Landscape; Hydraulics Article in Journal/Newspaper Iceland Staffordshire University: STORE - Staffordshire Online Repository Jökulsá á Fjöllum ENVELOPE(-16.707,-16.707,66.150,66.150) Geomorphology 201 512 519 |
institution |
Open Polar |
collection |
Staffordshire University: STORE - Staffordshire Online Repository |
op_collection_id |
ftustaffordshire |
language |
unknown |
topic |
F800 Physical and Terrestrial Geographical and Environmental Sciences |
spellingShingle |
F800 Physical and Terrestrial Geographical and Environmental Sciences Carrivick, Jonathan L. TWEED, Fiona Carling, Paul Alho, Petteri Marren, Philip M. Staines, Kate Russell, Andrew J. Rushmer, E. Lucy Duller, Robert Discussion of ‘Field evidence and hydraulic modeling of a large Holocene jökulhlaup at Jökulsá á Fjöllum channel, Iceland’ by Douglas Howard, Sheryl Luzzadder-Beach and Timothy Beach, 2012 |
topic_facet |
F800 Physical and Terrestrial Geographical and Environmental Sciences |
description |
This paper discusses Howard et al. (2012) who reconstruct the peak discharge of a glacial outburst flood, or ‘jökulhlaup’, for part of the Jökulsá á Fjöllum in north-central Iceland. They propose that this flood was the largest on Earth. We consider that the magnitude of the jökulhlaup proposed by Howard et al. (2012) warrants much more robust field evidence and demands more carefully parameterised hydraulic modelling. For these reasons we firstly (i) present their study in the context of previous research (ii) highlight issues with attributing landforms and sediments to jökulhlaups, and (iii) consider uncertainty regarding the timing and magnitude of jökulhlaups along the Jökulsá á Fjöllum. We argue herein that whilst a range of landforms and sediments that are attributable to jökulhlaups can be observed along the Jökulsá á Fjöllum, these are not necessarily diagnostic of jökulhlaups. Secondly, we critically discuss (iv) the major underlying assumptions of their study, and (v) their calculations and subsequent interpretations. These assessments lead us to consider that the proposal by Howard et al. (2012) of the largest flood on Earth is highly unrealistic, especially when due consideration is given to a possible source area and a trigger mechanism. Keywords Jökulsá á Fjöllum; Iceland; Outburst flood; Landscape; Hydraulics |
format |
Article in Journal/Newspaper |
author |
Carrivick, Jonathan L. TWEED, Fiona Carling, Paul Alho, Petteri Marren, Philip M. Staines, Kate Russell, Andrew J. Rushmer, E. Lucy Duller, Robert |
author_facet |
Carrivick, Jonathan L. TWEED, Fiona Carling, Paul Alho, Petteri Marren, Philip M. Staines, Kate Russell, Andrew J. Rushmer, E. Lucy Duller, Robert |
author_sort |
Carrivick, Jonathan L. |
title |
Discussion of ‘Field evidence and hydraulic modeling of a large Holocene jökulhlaup at Jökulsá á Fjöllum channel, Iceland’ by Douglas Howard, Sheryl Luzzadder-Beach and Timothy Beach, 2012 |
title_short |
Discussion of ‘Field evidence and hydraulic modeling of a large Holocene jökulhlaup at Jökulsá á Fjöllum channel, Iceland’ by Douglas Howard, Sheryl Luzzadder-Beach and Timothy Beach, 2012 |
title_full |
Discussion of ‘Field evidence and hydraulic modeling of a large Holocene jökulhlaup at Jökulsá á Fjöllum channel, Iceland’ by Douglas Howard, Sheryl Luzzadder-Beach and Timothy Beach, 2012 |
title_fullStr |
Discussion of ‘Field evidence and hydraulic modeling of a large Holocene jökulhlaup at Jökulsá á Fjöllum channel, Iceland’ by Douglas Howard, Sheryl Luzzadder-Beach and Timothy Beach, 2012 |
title_full_unstemmed |
Discussion of ‘Field evidence and hydraulic modeling of a large Holocene jökulhlaup at Jökulsá á Fjöllum channel, Iceland’ by Douglas Howard, Sheryl Luzzadder-Beach and Timothy Beach, 2012 |
title_sort |
discussion of ‘field evidence and hydraulic modeling of a large holocene jökulhlaup at jökulsá á fjöllum channel, iceland’ by douglas howard, sheryl luzzadder-beach and timothy beach, 2012 |
publisher |
Elsevier |
publishDate |
2013 |
url |
http://eprints.staffs.ac.uk/1724/ https://doi.org/10.1016/j.geomorph.2012.10.024 |
long_lat |
ENVELOPE(-16.707,-16.707,66.150,66.150) |
geographic |
Jökulsá á Fjöllum |
geographic_facet |
Jökulsá á Fjöllum |
genre |
Iceland |
genre_facet |
Iceland |
op_relation |
Carrivick, Jonathan L., TWEED, Fiona , Carling, Paul, Alho, Petteri, Marren, Philip M., Staines, Kate, Russell, Andrew J., Rushmer, E. Lucy and Duller, Robert (2013) Discussion of ‘Field evidence and hydraulic modeling of a large Holocene jökulhlaup at Jökulsá á Fjöllum channel, Iceland’ by Douglas Howard, Sheryl Luzzadder-Beach and Timothy Beach, 2012. Geomorphology, 201. pp. 512-519. ISSN 0169555X |
op_doi |
https://doi.org/10.1016/j.geomorph.2012.10.024 |
container_title |
Geomorphology |
container_volume |
201 |
container_start_page |
512 |
op_container_end_page |
519 |
_version_ |
1766037154319826944 |