Thermal structure and circulation in Lake Chapala, Mexico

<p>This study analyzed and discussed the instrumental measurements of temperature and currents made on January 10, 2007, in Lake Chapala. We received new data on the formation of the thermocline. It is shown that the thermocline of the lake is formed only in the daytime and in a top-heated 0.5...

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Main Authors: David Avalos-Cueva, Anatoliy Filonov, Iryna Tereshchenko, César O. Monzón, Federico Á. Velázquez-Muñoz
Format: Article
Language:English
Published: PAGEPress Publications 2016-03-01
Series:Journal of Limnology
Subjects:
Online Access:http://www.jlimnol.it/index.php/jlimnol/article/view/1430
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author David Avalos-Cueva
Anatoliy Filonov
Iryna Tereshchenko
César O. Monzón
Federico Á. Velázquez-Muñoz
author_facet David Avalos-Cueva
Anatoliy Filonov
Iryna Tereshchenko
César O. Monzón
Federico Á. Velázquez-Muñoz
author_sort David Avalos-Cueva
collection DOAJ
description <p>This study analyzed and discussed the instrumental measurements of temperature and currents made on January 10, 2007, in Lake Chapala. We received new data on the formation of the thermocline. It is shown that the thermocline of the lake is formed only in the daytime and in a top-heated 0.5-1.0 m layer. The vertical temperature gradient reaches 2.5°C in the first meter, and the spatial average temperature across the lake showed that the northern end of the lake is, on average, 1°C warmer than the southern end. We numerically modelled the currents in the lake for the dry season using the HAMSOM 2D hydrodynamic model. The simulation results are in good agreement with the acoustic Doppler current profiler ADCP measurements. In the dry season, two gyres were found: a cyclonic gyre in the eastern part and an anticyclonic gyre in the western part.</p>
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spelling doaj.art-8c18f3aa755840c1ad033c20284cf6ed2022-12-21T19:48:21ZengPAGEPress PublicationsJournal of Limnology1129-57671723-86332016-03-0175s110.4081/jlimnol.2016.1430805Thermal structure and circulation in Lake Chapala, MexicoDavid Avalos-Cueva0Anatoliy Filonov1Iryna Tereshchenko2César O. Monzón3Federico Á. Velázquez-Muñoz4Universidad Nacional Autónoma de MéxicoUniversity of GuadalajaraUniversity of GuadalajaraUniversity of GuadalajaraUniversity of Guadalajara<p>This study analyzed and discussed the instrumental measurements of temperature and currents made on January 10, 2007, in Lake Chapala. We received new data on the formation of the thermocline. It is shown that the thermocline of the lake is formed only in the daytime and in a top-heated 0.5-1.0 m layer. The vertical temperature gradient reaches 2.5°C in the first meter, and the spatial average temperature across the lake showed that the northern end of the lake is, on average, 1°C warmer than the southern end. We numerically modelled the currents in the lake for the dry season using the HAMSOM 2D hydrodynamic model. The simulation results are in good agreement with the acoustic Doppler current profiler ADCP measurements. In the dry season, two gyres were found: a cyclonic gyre in the eastern part and an anticyclonic gyre in the western part.</p>http://www.jlimnol.it/index.php/jlimnol/article/view/1430Lake ChapalHAMSOM modelcurrent patterntemperature variabilitywater column stratification.
spellingShingle David Avalos-Cueva
Anatoliy Filonov
Iryna Tereshchenko
César O. Monzón
Federico Á. Velázquez-Muñoz
Thermal structure and circulation in Lake Chapala, Mexico
Journal of Limnology
Lake Chapal
HAMSOM model
current pattern
temperature variability
water column stratification.
title Thermal structure and circulation in Lake Chapala, Mexico
title_full Thermal structure and circulation in Lake Chapala, Mexico
title_fullStr Thermal structure and circulation in Lake Chapala, Mexico
title_full_unstemmed Thermal structure and circulation in Lake Chapala, Mexico
title_short Thermal structure and circulation in Lake Chapala, Mexico
title_sort thermal structure and circulation in lake chapala mexico
topic Lake Chapal
HAMSOM model
current pattern
temperature variability
water column stratification.
url http://www.jlimnol.it/index.php/jlimnol/article/view/1430
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AT cesaromonzon thermalstructureandcirculationinlakechapalamexico
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