Fluid resonance in elastic-walled englacial transport networks
Englacial water transport is an integral part of the glacial hydrologic system, yet the geometry of englacial structures remains largely unknown. In this study, we explore the excitation of fluid resonance by small amplitude waves as a probe of englacial geometry. We model a hydraulic network consis...
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Cambridge University Press
2021
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ftdoajarticles:oai:doaj.org/article:b39610eb00464273851f95f4e1963697 2023-05-15T16:57:32+02:00 Fluid resonance in elastic-walled englacial transport networks Maria McQuillan Leif Karlstrom 2021-12-01T00:00:00Z https://doi.org/10.1017/jog.2021.48 https://doaj.org/article/b39610eb00464273851f95f4e1963697 EN eng Cambridge University Press https://www.cambridge.org/core/product/identifier/S0022143021000484/type/journal_article https://doaj.org/toc/0022-1430 https://doaj.org/toc/1727-5652 doi:10.1017/jog.2021.48 0022-1430 1727-5652 https://doaj.org/article/b39610eb00464273851f95f4e1963697 Journal of Glaciology, Vol 67, Pp 999-1012 (2021) Glacier geophysics glacier hydrology glaciological model experiments Environmental sciences GE1-350 Meteorology. Climatology QC851-999 article 2021 ftdoajarticles https://doi.org/10.1017/jog.2021.48 2023-03-12T01:30:57Z Englacial water transport is an integral part of the glacial hydrologic system, yet the geometry of englacial structures remains largely unknown. In this study, we explore the excitation of fluid resonance by small amplitude waves as a probe of englacial geometry. We model a hydraulic network consisting of one or more tabular cracks that intersect a cylindrical conduit, subject to oscillatory wave motion initiated at the water surface. Resulting resonant frequencies and quality factors are diagnostic of fluid properties and geometry of the englacial system. For a single crack–conduit system, the fundamental mode involves gravity-driven fluid sloshing between the conduit and the crack, at frequencies between 0.02 and 10 Hz for typical glacial parameters. Higher frequency modes include dispersive Krauklis waves generated within the crack and tube waves in the conduit. But we find that crack lengths are often well constrained by fundamental mode frequency and damping rate alone for settings that include alpine glaciers and ice sheets. Branching crack geometry and dip, ice thickness and source excitation function help define limits of crack detectability for this mode. In general, we suggest that identification of eigenmodes associated with wave motion in time series data may provide a pathway toward inferring englacial hydrologic structures. Article in Journal/Newspaper Journal of Glaciology Directory of Open Access Journals: DOAJ Articles Journal of Glaciology 67 266 999 1012 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Glacier geophysics glacier hydrology glaciological model experiments Environmental sciences GE1-350 Meteorology. Climatology QC851-999 |
spellingShingle |
Glacier geophysics glacier hydrology glaciological model experiments Environmental sciences GE1-350 Meteorology. Climatology QC851-999 Maria McQuillan Leif Karlstrom Fluid resonance in elastic-walled englacial transport networks |
topic_facet |
Glacier geophysics glacier hydrology glaciological model experiments Environmental sciences GE1-350 Meteorology. Climatology QC851-999 |
description |
Englacial water transport is an integral part of the glacial hydrologic system, yet the geometry of englacial structures remains largely unknown. In this study, we explore the excitation of fluid resonance by small amplitude waves as a probe of englacial geometry. We model a hydraulic network consisting of one or more tabular cracks that intersect a cylindrical conduit, subject to oscillatory wave motion initiated at the water surface. Resulting resonant frequencies and quality factors are diagnostic of fluid properties and geometry of the englacial system. For a single crack–conduit system, the fundamental mode involves gravity-driven fluid sloshing between the conduit and the crack, at frequencies between 0.02 and 10 Hz for typical glacial parameters. Higher frequency modes include dispersive Krauklis waves generated within the crack and tube waves in the conduit. But we find that crack lengths are often well constrained by fundamental mode frequency and damping rate alone for settings that include alpine glaciers and ice sheets. Branching crack geometry and dip, ice thickness and source excitation function help define limits of crack detectability for this mode. In general, we suggest that identification of eigenmodes associated with wave motion in time series data may provide a pathway toward inferring englacial hydrologic structures. |
format |
Article in Journal/Newspaper |
author |
Maria McQuillan Leif Karlstrom |
author_facet |
Maria McQuillan Leif Karlstrom |
author_sort |
Maria McQuillan |
title |
Fluid resonance in elastic-walled englacial transport networks |
title_short |
Fluid resonance in elastic-walled englacial transport networks |
title_full |
Fluid resonance in elastic-walled englacial transport networks |
title_fullStr |
Fluid resonance in elastic-walled englacial transport networks |
title_full_unstemmed |
Fluid resonance in elastic-walled englacial transport networks |
title_sort |
fluid resonance in elastic-walled englacial transport networks |
publisher |
Cambridge University Press |
publishDate |
2021 |
url |
https://doi.org/10.1017/jog.2021.48 https://doaj.org/article/b39610eb00464273851f95f4e1963697 |
genre |
Journal of Glaciology |
genre_facet |
Journal of Glaciology |
op_source |
Journal of Glaciology, Vol 67, Pp 999-1012 (2021) |
op_relation |
https://www.cambridge.org/core/product/identifier/S0022143021000484/type/journal_article https://doaj.org/toc/0022-1430 https://doaj.org/toc/1727-5652 doi:10.1017/jog.2021.48 0022-1430 1727-5652 https://doaj.org/article/b39610eb00464273851f95f4e1963697 |
op_doi |
https://doi.org/10.1017/jog.2021.48 |
container_title |
Journal of Glaciology |
container_volume |
67 |
container_issue |
266 |
container_start_page |
999 |
op_container_end_page |
1012 |
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1766049104288284672 |