Comparación de alturas y periodos de olas entre modelo de onda espectral de estado estacionario (STWAVE) y modelo paramétrico (SMB) en Lago Llanquihue
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2022
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es
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Universidad Andrés Bello
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Licencia CC
Licencia CC
Resumen
El presente documento corresponde a un estudio comparativo de predicción de alturas y periodos
de olas en el lago Llanquihue. Las predicciones se obtuvieron con dos modelos diferentes, uno de onda de
tercera generación (STWAVE) y uno paramétrico de bajo costo computacional (SMB). Ambos modelos
fueron comparados con mediciones de campo obtenidas con un equipo AWAC de medición acústica
instalada en el lago Llanquihue por un periodo de un mes. Se obtuvieron 136 resultados de alturas y periodos
significativos de olas observándose entre SMB y AWAC una diferencia de 35,9% para las alturas y de 24,4%
para los periodos. Entre STWAVE y AWAC los porcentajes de diferencia fueron de 38,7% para alturas y
de 27,2% para periodos. Una vez validados ambos modelos se estimaron alturas y periodos de olas en
Frutillar, Puerto Clocker y Ensenada para un intervalo de tiempo que va desde el 14 de octubre de 2021
hasta el 16 de marzo de 2022 equivalente a 1223 magnitudes y direcciones de viento. La diferencia entre
modelos respecto a las alturas fue de 18,8%, en Ensenada de 30,3% y en Puerto Clocker de 37,2%. Respecto
a los periodos el porcentaje de diferencia entre modelos para Frutillar fue de 19,6%, para Ensenada de 22,7%
y Puerto Clocker de 11,7%. Basado en los resultados obtenidos en las alturas se observó una sobreestimación
promedio del 30% por parte de SMB mientras que, para periodos de olas, SMB subestima en promedio un
20% los valores de mediciones de campo.
This document corresponds to a comparative study of prediction of wave heights and periods in Lake Llanquihue. The predictions were obtained with two different models, one of third generation wave (STWAVE) and one parametric model of low computational cost (SMB). Both models were compared with field measurements obtained with an AWAC acoustic measurement equipment installed in Lake Llanquihue for a period of one month. 136 results were obtained for significant wave heights and periods. A difference of 35.9% for heights and 24.39% for periods was observed between SMB and AWAC. Between STWAVE and AWAC the difference percentages were 38.67% for heights and 27.17% for periods. Once both models were validated, wave heights and periods were estimated in Frutillar, Puerto Clocker and Ensenada for a period from October 14, 2021 to March 16, 2022, equivalent to 1,223 wind magnitudes and directions. The difference between models with respect to heights was 18.8%, in Ensenada 30.3% and in Puerto Clocker 37.2%. Regarding the periods, the percentage difference between models for Frutillar was 19.62%, for Ensenada 22.7% and Puerto Clocker 11.7%. Based on the obtained wave heights, an average overestimation of 30% was observed by SMB, whereas for the periods on average SMB underestimates field measurements
This document corresponds to a comparative study of prediction of wave heights and periods in Lake Llanquihue. The predictions were obtained with two different models, one of third generation wave (STWAVE) and one parametric model of low computational cost (SMB). Both models were compared with field measurements obtained with an AWAC acoustic measurement equipment installed in Lake Llanquihue for a period of one month. 136 results were obtained for significant wave heights and periods. A difference of 35.9% for heights and 24.39% for periods was observed between SMB and AWAC. Between STWAVE and AWAC the difference percentages were 38.67% for heights and 27.17% for periods. Once both models were validated, wave heights and periods were estimated in Frutillar, Puerto Clocker and Ensenada for a period from October 14, 2021 to March 16, 2022, equivalent to 1,223 wind magnitudes and directions. The difference between models with respect to heights was 18.8%, in Ensenada 30.3% and in Puerto Clocker 37.2%. Regarding the periods, the percentage difference between models for Frutillar was 19.62%, for Ensenada 22.7% and Puerto Clocker 11.7%. Based on the obtained wave heights, an average overestimation of 30% was observed by SMB, whereas for the periods on average SMB underestimates field measurements
Notas
Proyecto de título (Ingeniero Civil)
Palabras clave
Olas, Mediciones, Altura de las Olas, Predicciones, Chile, Lago Llanquihue