Periodic Hydrography: A Tool for Accurate Sedimentation Rate Determination (Case Study: Nowshahr Port)

Abdi, Naser; Rostami, Akbar; Kouroshniya, Ali; Javaheri, Ahmad; Sadeghnejad, Melika

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Volume 14, Issue 4 (6-2025)

JGST 2025, 14(4): 79-89

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Periodic Hydrography: A Tool for Accurate Sedimentation Rate Determination (Case Study: Nowshahr Port)

Naser Abdi ^*

Abstract: (269 Views)

With over 70 years of history, Nowshahr Port, is one of the most important commercial ports in Iran on the Caspian Sea. With its strategic location and advanced equipment, the port plays a key role in developing maritime trade, exports, and transit to Central Asian and Eastern European countries. One of the main challenges this port faces is sedimentation in the entrance channel and basin, which affects operational efficiency and increases dredging costs. Studying and analyzing the sedimentation rate in this area is essential for the optimal management of port operations. This study investigated the sedimentation process in Nowshahr Port using periodic bathymetry data collected over one and a half years. The data included periodic hydrographic measurements from October 2022 to April 2024. These measurements were analyzed to assess seabed changes and determine the accumulated sediment rate. The results manifested that methods based on hydrographic observational data are more accurate than analytical methods. To calculate the sediment and dredging volumes in this study, a triangulated irregular network (TIN) surface was constructed using Autodesk Civil 3D software for the primary and secondary dates. The results showed that the annual sedimentation rate is 0.38 m/year in the Nowshahr Port basin and 0.81 m/year in the entrance channel. These values are consistent with previous predictions and the results of numerical models in Nowshahr Port, confirming the importance of precise seabed change monitoring by hydrography. Furthermore, the effect of water level fluctuations on sedimentation rates was investigated using the Pearson Correlation Coefficient. The correlation was 0.81 in the Nowshahr Port basin and 0.64 in the Nowshahr Port channel. These results indicate a significant relationship between sedimentation rates in the Nowshahr Port basin and entrance channel and fluctuations in the water level of the Caspian Sea. These findings emphasize the importance of continuous monitoring and periodic hydrographic surveys for the optimal management of dredging operations. Ultimately, the results of this study can help improve the maintenance and performance of Nowshahr Port, as well as reduce dredging costs and increase productivity.

Article number: 6

Keywords: Dredging, Hydrography, Nowshahr port, Sea water level, Sedimentation

Full-Text [PDF 842 kb] (113 Downloads)

Type of Study: Research | Subject: Geo&Hydro
Received: 2025/02/28

References

1. Sakhaee, F. and Khalili, F. (2021). "Sediment pattern & rate of bathymetric changes due to construction of breakwater extension at Nowshahr port." Journal of Ocean Engineering and Science 6(1), 70-84. [DOI:10.1016/j.joes.2020.04.002]

2. Mahmoodi, A., Lashteh Neshaei, M. A., Mansouri, A. and Shafai Bejestan, M. (2020). "Study of Current- and Wave-Induced Sediment Transport in the Nowshahr Port Entrance Channel by Using Numerical Modeling and Field Measurements." Journal of Marine Science and Engineering 8(4), 284. [DOI:10.3390/jmse8040284]

3. Emami Zadeh Mahabadi, A. M., Lari, K. and Zoljoodi, M. (2018). "Comparing the estimation of sedimentation rate and volume in Imam Khomeini Port's access channel using the methods of Hydrography, Bijker's theory and modeling by Mike21." Geographic Information Journal Sepehr 27(106), 141-152.

4. Enayati, A. and Khalooei Tafti, S. S. (2019). "Evaluation of Semi-Empirical Relationships in Estimating Longshore Sediment Transport Rate Based on Field Data Validation (Babolsar Coast)." Proceedings of the 3rd International Congress on Civil Engineering, Architecture, and Contemporary Urbanism, Tehran, Iran.

5. Kamphuis, J., Davies, M., Nairn, R. and Sayao, O. (1986). "Calculation of littoral sand transport rate." Coastal Engineering 10(1), 1-21. [DOI:10.1016/0378-3839(86)90036-0]

6. Kamphuis, J. W. (1991). "Alongshore sediment transport rate." Journal of Waterway, Port, Coastal, and Ocean Engineering 117(6), 624-640. [DOI:10.1061/(ASCE)0733-950X(1991)117:6(624)]

7. Sadeghifar, T., Azarmsa, S. A. and Vafakhah, M. (2013). "Prediction of Alongshore Sediment Transport Rate Using Semi-Empirical Formulas and an Artificial Neural Networks (ANNs) model in Noor Coastal zone." Journal of Marine Engineering 9(17), 77-86.

8. Darama, Y., Selek, Z., Selek, B., Akgul, M. A. and Dagdeviren, M. (2019). "Determination of sediment deposition of Hasanlar Dam using bathymetric and remote sensing studies." Natural Hazards 97, 211-227. [DOI:10.1007/s11069-019-03635-y]

9. Furnans, J. and Austin, B. (2008). "Hydrographic survey methods for determining reservoir volume." Environmental Modelling & Software 23(2), 139-146. [DOI:10.1016/j.envsoft.2007.05.011]

10. Sadeghian, A., Yari, S. and Najafi Alamdari, M. (2016). "Analysis of Sedimentation Trends in Bushehr Port Access Channels Using Precise Hydrographic Data." Proceedings of the 2nd National Conference on Engineering and Information Technology, Iran.

11. Tajfirouz, B., Saeidi, V., Khalili, H. and Nemati, M. H. (2022). "Volume and Rate Estimations of Sedimentation in Amirabad Port During Period 2018-2021." Journal of Geoscience and Surveying Technology 11(3), 155-123. [DOI:10.2478/jcbtp-2022-0028]

12. Autodesk. (2010). AutoCAD Civil 3D 2010 User's Guide. Autodesk Inc., San Rafael, CA.

13. Lee Rodgers, J. and Nicewander, W. A. (1988). "Thirteen ways to look at the correlation coefficient." The American Statistician 42(1), 59-66. [DOI:10.2307/2685263]

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Abdi N, Rostami A, Kouroshniya A, Javaheri A, Sadeghnejad M. Periodic Hydrography: A Tool for Accurate Sedimentation Rate Determination (Case Study: Nowshahr Port). JGST 2025; 14 (4) : 6
URL: http://jgst.issgeac.ir/article-1-1217-en.html

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Volume 14, Issue 4 (6-2025)

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