Prediction of Gorgan Bay Inlet Performance and Morphological Stability

Roodbari Shahmiri, Saeid; Adjami, Mehdi; Khoshravan,  Homayoon

doi:10.29252/joc.8.31.53

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Volume 8, Issue 31 (2017)

2017, 8(31): 53-65

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Prediction of Gorgan Bay Inlet Performance and Morphological Stability

Saeid Roodbari Shahmiri

, Mehdi Adjami

, Homayoon Khoshravan

, adjami@shahroodut.ac.ir

Abstract: (6163 Views)

The aim of this research was to study the stability and performance of Gorgan Bay and Miankaleh sand spit in order to find out the mechanisms of Gorgan Bay closure. According to the result of Miankaleh coasts’ numerical model (by DHI Mike21 package), wave energy and current speed reduced from west to east. Simultaneously, the sensitively of coasts to local storm surge due storm increased. The most probable storm surge at eastern coasts was about 40 centimeters and can make 15-20 cm sea level rise. Ashooradeh was a low wave energy mode region. The currents out of the bay were mostly from west to east and in the bay were counter clockwise. The total rate of sediment discharge in Gorgan inlet was 0.001 m³/sec/m that resulted in 1 cm/day bed level changes in inlet, while the rate of total sediment discharge in Miankaleh beach was less than 0.00002 m³/sec/m. Finally, the Gorgan bay inlet stability study (by Escofier popular model) showed that under the current conditions of the storm and low rate of sediment transport from upstream, it remains stable.

Keywords: Stable inlets, Mike 21, Escofier model, Hydrodynamic model, Gorgan bay inlet, Gorgan Bay

Full-Text [PDF 97 kb] (1874 Downloads)

Type of Study: Research/ Original/ Regular Article |
Received: 2017/04/12 | Accepted: 2017/12/18 | ePublished: 2018/03/7

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18. Bruun, P.; Mehta, A.J.; Johnson, I.G., 1978. Stability of tidal inlets: Theory and engineering. Developments in Geotechnical Engineering. Elsevier Science, Amsterdam, 510P.#

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22. Escoffier, F.F., 1940. The stability of tidal inlets. Shore and Beach, 111-114PP.#

23. FitzGerald, D.M., 1987. Back-barrier dynamics of the east frisian islands. Journal of Sedimentary Petrology, 57(4): 746-754.#

24. kiaei, M.S., 2014. The survey of sedimentation and erosion of ideal tidal inlets effected by both tide and cross-shore wave by numerical modeling. Watershed Management Research, 104: 62-74.#

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26. Tung, T.T., 2006. Seasonal closure of tidal inlets and estuaries at the Central Coast of Vietnam. International Conference on Estuaries and Coasts (ICEC-2006), 1: 1150-1157.#

‎ 10.29252/joc.8.31.53

‎ 20.1001.1.15621057.1396.8.31.7.5

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RefWorks

Roodbari Shahmiri S, Adjami M, Khoshravan H. Prediction of Gorgan Bay Inlet Performance and Morphological Stability . Journal of Oceanography 2017; 8 (31) :53-65
URL: http://joc.inio.ac.ir/article-1-1203-en.html

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