Uncertainty analysis of seawater intrusion forecasting

In order to describe the importance of uncertainty analysis in seawater intrusion forecasting and identify the main factors that might cause great differences in prediction results, we analyzed the influence of sea level rise, tidal effect, the seasonal variance of influx, and the annual variance of...

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Main Authors: Zhong-wei Zhao, Jian Zhao, Chang-sheng Fu
Format: Article
Language:English
Published: Elsevier 2013-10-01
Series:Water Science and Engineering
Subjects:
Online Access:http://www.sciencedirect.com/science/article/pii/S1674237015302520
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author Zhong-wei Zhao
Jian Zhao
Chang-sheng Fu
author_facet Zhong-wei Zhao
Jian Zhao
Chang-sheng Fu
author_sort Zhong-wei Zhao
collection DOAJ
description In order to describe the importance of uncertainty analysis in seawater intrusion forecasting and identify the main factors that might cause great differences in prediction results, we analyzed the influence of sea level rise, tidal effect, the seasonal variance of influx, and the annual variance of the pumping rate, as well as combinations of different parameters. The results show that the most important factors that might cause great differences in seawater intrusion distance are the variance of pumping rate and combinations of different parameters. The influence of sea level rise can be neglected in a short-time simulation (ten years, for instance). Retardation of seawater intrusion caused by tidal effects is obviously important in aquifers near the coastline, but the influence decreases with distance away from the coastline and depth away from the seabed. The intrusion distance can reach a dynamic equilibrium with the application of the sine function for seasonal effects of influx. As a conclusion, we suggest that uncertainty analysis should be considered in seawater intrusion forecasting, if possible.
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spelling doaj.art-933e81eb7aa044ca856a76b40287f23b2022-12-21T23:56:54ZengElsevierWater Science and Engineering1674-23702013-10-016438039110.3882/j.issn.1674-2370.2013.04.002Uncertainty analysis of seawater intrusion forecastingZhong-wei Zhao0Jian Zhao1Chang-sheng Fu2State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering, Hohai University, Nanjing 210098, P. R. ChinaCollege of Water Conservancy and Hydropower Engineering, Hohai University, Nanjing 210098, P. R. ChinaJiangsu Provincial Communication Planning and Design Institute, Nanjing 210005, P. R. ChinaIn order to describe the importance of uncertainty analysis in seawater intrusion forecasting and identify the main factors that might cause great differences in prediction results, we analyzed the influence of sea level rise, tidal effect, the seasonal variance of influx, and the annual variance of the pumping rate, as well as combinations of different parameters. The results show that the most important factors that might cause great differences in seawater intrusion distance are the variance of pumping rate and combinations of different parameters. The influence of sea level rise can be neglected in a short-time simulation (ten years, for instance). Retardation of seawater intrusion caused by tidal effects is obviously important in aquifers near the coastline, but the influence decreases with distance away from the coastline and depth away from the seabed. The intrusion distance can reach a dynamic equilibrium with the application of the sine function for seasonal effects of influx. As a conclusion, we suggest that uncertainty analysis should be considered in seawater intrusion forecasting, if possible.http://www.sciencedirect.com/science/article/pii/S1674237015302520seawater intrusion forecastinguncertainty analysisdeterministic modeluncertainty modelfactorial design
spellingShingle Zhong-wei Zhao
Jian Zhao
Chang-sheng Fu
Uncertainty analysis of seawater intrusion forecasting
Water Science and Engineering
seawater intrusion forecasting
uncertainty analysis
deterministic model
uncertainty model
factorial design
title Uncertainty analysis of seawater intrusion forecasting
title_full Uncertainty analysis of seawater intrusion forecasting
title_fullStr Uncertainty analysis of seawater intrusion forecasting
title_full_unstemmed Uncertainty analysis of seawater intrusion forecasting
title_short Uncertainty analysis of seawater intrusion forecasting
title_sort uncertainty analysis of seawater intrusion forecasting
topic seawater intrusion forecasting
uncertainty analysis
deterministic model
uncertainty model
factorial design
url http://www.sciencedirect.com/science/article/pii/S1674237015302520
work_keys_str_mv AT zhongweizhao uncertaintyanalysisofseawaterintrusionforecasting
AT jianzhao uncertaintyanalysisofseawaterintrusionforecasting
AT changshengfu uncertaintyanalysisofseawaterintrusionforecasting