Lake-level variations of Lago Fagnano, Tierra del Fuego: observations, modelling and interpretation
The lake-level variations of Lago Fagnano, the largest lake in Tierra del Fuego, southernmost South America, on time scales from a few minutes to three years are investigated using a geodetic approach and applying the tools of time series analysis. Based on pressure tide gauge records at three locat...
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| Format: | Article |
| Language: | English |
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PAGEPress Publications
2010-02-01
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| Series: | Journal of Limnology |
| Subjects: | |
| Online Access: | http://www.jlimnol.it/index.php/jlimnol/article/view/77 |
| _version_ | 1818720222480171008 |
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| author | Luciano MENDOZA Gunter LIEBSCH Daniel DEL COGLIANO Andreas RICHTER Mathias FRITSCHE Reinhard DIETRICH Raúl PERDOMO Jose Luis HORMAECHEA |
| author_facet | Luciano MENDOZA Gunter LIEBSCH Daniel DEL COGLIANO Andreas RICHTER Mathias FRITSCHE Reinhard DIETRICH Raúl PERDOMO Jose Luis HORMAECHEA |
| author_sort | Luciano MENDOZA |
| collection | DOAJ |
| description | The lake-level variations of Lago Fagnano, the largest lake in Tierra del Fuego, southernmost South America, on time scales from a few minutes to three years are investigated using a geodetic approach and applying the tools of time series analysis. Based on pressure tide gauge records at three locations in the lake precise lake-level time series are derived. The analysis of the observed variations in space, time and frequency domain leads to the separation of the principal force-response mechanisms. We show that the lake-level variations in Lago Fagnano can be described essentially as a combination of lake-level shift and tilt and of surface seiches. Regarding the lake-level response to air-pressure forcing, a significant departure from the inverse barometer model is found. Surface seiches dynamics are particularly intensive in Lago Fagnano pointing towards exceptionally low dissipative friction. An undisturbed series of seiches lasting eleven days is presented; and at least eleven longitudinal modes are identified. Based on the characterisation of the main contributions in space and time as well as their relation to the driving forces, a model for the transfer of the lake-level variations at a reference point to an arbitrary location in the lake with an accuracy of 1 cm is developed. |
| first_indexed | 2024-12-17T20:19:24Z |
| format | Article |
| id | doaj.art-e8c33fd2fff64e78bde8cab0f6457515 |
| institution | Directory Open Access Journal |
| issn | 1129-5767 1723-8633 |
| language | English |
| last_indexed | 2024-12-17T20:19:24Z |
| publishDate | 2010-02-01 |
| publisher | PAGEPress Publications |
| record_format | Article |
| series | Journal of Limnology |
| spelling | doaj.art-e8c33fd2fff64e78bde8cab0f64575152022-12-21T21:34:00ZengPAGEPress PublicationsJournal of Limnology1129-57671723-86332010-02-01691294110.4081/jlimnol.2010.29Lake-level variations of Lago Fagnano, Tierra del Fuego: observations, modelling and interpretationLuciano MENDOZAGunter LIEBSCHDaniel DEL COGLIANOAndreas RICHTERMathias FRITSCHEReinhard DIETRICHRaúl PERDOMOJose Luis HORMAECHEAThe lake-level variations of Lago Fagnano, the largest lake in Tierra del Fuego, southernmost South America, on time scales from a few minutes to three years are investigated using a geodetic approach and applying the tools of time series analysis. Based on pressure tide gauge records at three locations in the lake precise lake-level time series are derived. The analysis of the observed variations in space, time and frequency domain leads to the separation of the principal force-response mechanisms. We show that the lake-level variations in Lago Fagnano can be described essentially as a combination of lake-level shift and tilt and of surface seiches. Regarding the lake-level response to air-pressure forcing, a significant departure from the inverse barometer model is found. Surface seiches dynamics are particularly intensive in Lago Fagnano pointing towards exceptionally low dissipative friction. An undisturbed series of seiches lasting eleven days is presented; and at least eleven longitudinal modes are identified. Based on the characterisation of the main contributions in space and time as well as their relation to the driving forces, a model for the transfer of the lake-level variations at a reference point to an arbitrary location in the lake with an accuracy of 1 cm is developed.http://www.jlimnol.it/index.php/jlimnol/article/view/77hydrodynamics, lake level, surface seiches, tide gauge, time series analysis |
| spellingShingle | Luciano MENDOZA Gunter LIEBSCH Daniel DEL COGLIANO Andreas RICHTER Mathias FRITSCHE Reinhard DIETRICH Raúl PERDOMO Jose Luis HORMAECHEA Lake-level variations of Lago Fagnano, Tierra del Fuego: observations, modelling and interpretation Journal of Limnology hydrodynamics, lake level, surface seiches, tide gauge, time series analysis |
| title | Lake-level variations of Lago Fagnano, Tierra del Fuego: observations, modelling and interpretation |
| title_full | Lake-level variations of Lago Fagnano, Tierra del Fuego: observations, modelling and interpretation |
| title_fullStr | Lake-level variations of Lago Fagnano, Tierra del Fuego: observations, modelling and interpretation |
| title_full_unstemmed | Lake-level variations of Lago Fagnano, Tierra del Fuego: observations, modelling and interpretation |
| title_short | Lake-level variations of Lago Fagnano, Tierra del Fuego: observations, modelling and interpretation |
| title_sort | lake level variations of lago fagnano tierra del fuego observations modelling and interpretation |
| topic | hydrodynamics, lake level, surface seiches, tide gauge, time series analysis |
| url | http://www.jlimnol.it/index.php/jlimnol/article/view/77 |
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