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International Journal of Environment Science and Technology
Center for Environment and Energy Research and Studies (CEERS)
ISSN: 1735-1472 EISSN: 1735-1472
Vol. 12, No. 10, 2015, pp. 3329-3340
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Bioline Code: st15312
Full paper language: English
Document type: Research Article
Document available free of charge
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International Journal of Environment Science and Technology, Vol. 12, No. 10, 2015, pp. 3329-3340
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Effects of sea level rise on the salinity of Bahmanshir estuary
Etemad-Shahidi, A.; Rohani, M. S.; Parsa, J. & Lemckert, C.
Abstract
Bahmanshir estuary, which is connected to the
Persian Gulf, is one of the most important water resources
in region. In this study, saltwater intrusion due to possible
sea level rise in the Bahmanshir estuary was investigated.
A one-dimensional hydrodynamic and water quality model
was used for the simulation of the salinity intrusion and
associated water quality, with measured field data being
used for model calibration and verification. The verified
model was then used as a virtual laboratory to study the
effects of different parameters on the salinity intrusion. A
coupled gas-cycle/climate model was used to generate the
climate change scenarios in the studied area that showed
sea level rises varying from 30 to 90 cm for 2100. The
models were then combined to assess the impact of future
sea level rise on the salinity distribution in the Bahmanshir
estuary. Using important dimensionless numbers, a dimensionally
homogenous equation was subsequently developed
for the prediction of the salinity intrusion length,
showing that the salinity intrusion length is inversely correlated
with the discharge and directly with the sea level
rise. In addition, the magnitude and frequency of the salinity
standard violations at the pump station were predicted
for 2100, showing that the salinity violations under climate
change effects can increase to 45 % of the times at this
location. This reveals the importance of this type of approach
for considering future infrastructure management.
Keywords
Bahmanshir estuary; Salinity intrusion; Sea level rise; Climate change; Water quality
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