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Environmental Earth Sciences

Erschienen in:

01.11.2013 | Special Issue

Development of a numerical model for nitrates in groundwater in the reservoir area of the Komesu subsurface dam, Okinawa, Japan

verfasst von: Shuhei Yoshimoto, Takeo Tsuchihara, Satoshi Ishida, Masayuki Imaizumi

Erschienen in: Environmental Earth Sciences | Ausgabe 5/2013

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Abstract

A numerical model consisting of simplified equations was developed to simulate nitrate concentrations in groundwater in a reservoir area of a subsurface dam in a Quaternary limestone region. The model was composed of a water balance sub-model and a nitrogen balance sub-model; the water balance sub-model was built from tank models which can express the quick dilution near caves and the effect of dam construction; and the nitrogen balance sub-model was made to represent changes in nitrogen forms and movement of nitrogen in the soil and aquifer zones. The model was calibrated and verified by observed data before and after the dam construction and then applied to a predictive simulation under a simple assumption that rainfall descends gradually. The model seemed applicable to long-term prediction of changes in NO₃-N in the reservoir area.

Vorheriger Artikel Fluid flow modeling of a coastal fractured karstic aquifer by means of a lumped parameter approach

Nächster Artikel Surface water and groundwater dynamic interaction models as guiding tools for optimal conjunctive water use policies in the central plain of Thailand

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Titel: Development of a numerical model for nitrates in groundwater in the reservoir area of the Komesu subsurface dam, Okinawa, Japan
verfasst von: Shuhei Yoshimoto
Takeo Tsuchihara
Satoshi Ishida
Masayuki Imaizumi
Publikationsdatum: 01.11.2013
Verlag: Springer Berlin Heidelberg
Erschienen in: Environmental Earth Sciences / Ausgabe 5/2013
Print ISSN: 1866-6280
Elektronische ISSN: 1866-6299
DOI: https://doi.org/10.1007/s12665-011-1356-6

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