Surface seiches in Flathead Lake
Standing surface waves or seiches are inherent hydrodynamic features of enclosed water bodies. Their two-dimensional structure is important for estimating flood risk, coastal erosion, and bottom sediment transport, and for understanding shoreline habitats and lake ecology in general. In this work, w...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Copernicus Publications
2015-06-01
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| Series: | Hydrology and Earth System Sciences |
| Online Access: | http://www.hydrol-earth-syst-sci.net/19/2605/2015/hess-19-2605-2015.pdf |
| _version_ | 1818346553202442240 |
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| author | G. Kirillin M. S. Lorang T. C. Lippmann C. C. Gotschalk S. Schimmelpfennig |
| author_facet | G. Kirillin M. S. Lorang T. C. Lippmann C. C. Gotschalk S. Schimmelpfennig |
| author_sort | G. Kirillin |
| collection | DOAJ |
| description | Standing surface waves or seiches are inherent hydrodynamic features of
enclosed water bodies. Their two-dimensional structure is important for
estimating flood risk, coastal erosion, and bottom sediment transport, and for
understanding shoreline habitats and lake ecology in general. In this work,
we present analysis of two-dimensional seiche characteristics in Flathead
Lake, Montana, USA, a large intermountain lake known to have high seiche
amplitudes. To examine spatial characteristics of different seiche modes, we
used the original procedure of determining the seiche frequencies from the
primitive equation model output with subsequent derivation of the spatial
seiche structure at fixed frequencies akin to the tidal harmonic analysis. The
proposed procedure revealed specific seiche oscillation features in Flathead
Lake, including maximum surface level amplitudes of the first fundamental mode
in straights around the largest island; several higher modes appearing
locally in the vicinity of the river inflow; the "Helmholtz" open harbor
mode, with the period approximately twice that of the longest seiche mode,
generated by a large shallow bay connected to the main lake basin; and
several rotating seiche modes potentially affecting the lake-wide
circulation. We discuss lake management problems related to the
spatial seiche distribution, such as shoreline erosion, floods, and transport
of sediments and invasive species in Flathead Lake. |
| first_indexed | 2024-12-13T17:20:06Z |
| format | Article |
| id | doaj.art-649bc4df19d5424ba57cc27d3b0ce4a3 |
| institution | Directory Open Access Journal |
| issn | 1027-5606 1607-7938 |
| language | English |
| last_indexed | 2024-12-13T17:20:06Z |
| publishDate | 2015-06-01 |
| publisher | Copernicus Publications |
| record_format | Article |
| series | Hydrology and Earth System Sciences |
| spelling | doaj.art-649bc4df19d5424ba57cc27d3b0ce4a32022-12-21T23:37:20ZengCopernicus PublicationsHydrology and Earth System Sciences1027-56061607-79382015-06-011962605261510.5194/hess-19-2605-2015Surface seiches in Flathead LakeG. Kirillin0M. S. Lorang1T. C. Lippmann2C. C. Gotschalk3S. Schimmelpfennig4Department of Ecohydrology, Leibniz Institute of Freshwater Ecology and Inland Fisheries (IGB), Berlin, GermanyThe University of Montana, Flathead Lake Biological Station, Polson, MT, USAThe University of Montana, Flathead Lake Biological Station, Polson, MT, USAThe University of Montana, Flathead Lake Biological Station, Polson, MT, USADepartment of Ecohydrology, Leibniz Institute of Freshwater Ecology and Inland Fisheries (IGB), Berlin, GermanyStanding surface waves or seiches are inherent hydrodynamic features of enclosed water bodies. Their two-dimensional structure is important for estimating flood risk, coastal erosion, and bottom sediment transport, and for understanding shoreline habitats and lake ecology in general. In this work, we present analysis of two-dimensional seiche characteristics in Flathead Lake, Montana, USA, a large intermountain lake known to have high seiche amplitudes. To examine spatial characteristics of different seiche modes, we used the original procedure of determining the seiche frequencies from the primitive equation model output with subsequent derivation of the spatial seiche structure at fixed frequencies akin to the tidal harmonic analysis. The proposed procedure revealed specific seiche oscillation features in Flathead Lake, including maximum surface level amplitudes of the first fundamental mode in straights around the largest island; several higher modes appearing locally in the vicinity of the river inflow; the "Helmholtz" open harbor mode, with the period approximately twice that of the longest seiche mode, generated by a large shallow bay connected to the main lake basin; and several rotating seiche modes potentially affecting the lake-wide circulation. We discuss lake management problems related to the spatial seiche distribution, such as shoreline erosion, floods, and transport of sediments and invasive species in Flathead Lake.http://www.hydrol-earth-syst-sci.net/19/2605/2015/hess-19-2605-2015.pdf |
| spellingShingle | G. Kirillin M. S. Lorang T. C. Lippmann C. C. Gotschalk S. Schimmelpfennig Surface seiches in Flathead Lake Hydrology and Earth System Sciences |
| title | Surface seiches in Flathead Lake |
| title_full | Surface seiches in Flathead Lake |
| title_fullStr | Surface seiches in Flathead Lake |
| title_full_unstemmed | Surface seiches in Flathead Lake |
| title_short | Surface seiches in Flathead Lake |
| title_sort | surface seiches in flathead lake |
| url | http://www.hydrol-earth-syst-sci.net/19/2605/2015/hess-19-2605-2015.pdf |
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