The rip currents are a strong and narrow stream that forms in the surf zone and is approximately perpendicular to the coast. The study area is the coastline of the southwestern part of the Caspian Sea in the Base of Sefidroud River Delta. The purpose of this study is to identify rip current and to investigate the causes of this phenomenon. The main tools and data of this research are Hydrographic map of kiashar sea chart to scale 1/10000 and GPS device with ArcGIS software. The method of this work is based on the recognition of rip current in field observations. In the next step, transferring the points to the software environment and adding it to the geomorphic parameters (sea bed topography, slope, coastline geometry, particle diameter and direction of the waves) to analyze the reasons for the occurrence of rip current in the base of the Sefidroud River Delta. The results show that the diameter of sand particles is smaller in the areas of rip current and the slope of these regions is less than adjacent regions. The coastline geometry also shows a large amount of curvature and indentation in the presence of rip currents that can be helpful in identifying this risk. In areas where there are small ridges between the sea stacks, conditions are created to create and strengthen these currents. Therefore, it can be concluded that because of the close connection between the occurrence of this phenomenon and the presence of stacks and troughs in the Wave Breakdown Zone, It is possible to identify the location of the currents and even assess the accuracy of the depth maps.
حاجی کریمی، زهرا. هژیر محمدی، سیاوش شایان، مجتبی یمانی و رضا خوشرفتار. 1399. تحلیل فرآیندهای مورفودینامیکی مؤثر در تغییرات خط ساحلی دریای خزر در غرب گیلان. مطالعه موردی: دلتای رودخانهای کرگانرود، مجله آمایش جغرافیایی فضا، دوره 10، شماره 36، صص 249-266، گرگان.
غلامی، زهرا. چگینی، وحید.، 1389. پهنهبندی جریانهای شکافنده در سواحل مرکزی گیلان، علوم و فناوری دریا، سال شانزدهم، شمارۀ 51، صص 20-10، نوشهر.
لرستانی، قاسم. رضا اسماعیلی و فاطمه اعتمادی. 1394. بررسی میزان تغییرات خط ساحلی دریای خزر در مصب رودخانه ها (مطالعه موردی: مصب رودخانههای هراز، بابلرود و تالار). مجله آمایش جغرافیایی فضا، دوره 5، شماره 18، صص 136-123. گرگان.
یمانی، مجتبی. مهران مقصودی و حمید عمونیا.1395. تعیین حریم توسعه نوار ساحلی خزر با استفاده از داده های ژئومورفولوژیک و تغییرات تراز سطح آب دریا (مطالعه موردی: خط ساحلی بابل رود تا تالار)، مجله آمایش جغرافیایی فضا، دروه 6، شماره 19، صص 44-32. گرگان.
Arozarena, Isabel, Chris Houser, Alejandro Gutiérrez Echeverria and Christian Brannstrom, 2015. The rip current hazard in Costa Rica. Natural Hazards, 77: 2, New York.
Austin, Martin, timothy Scott, James Brown, Jenna Brown and Jamie MacMahan, 2009. Macrotidal rip current experiment: circulation and dynamics. Journal of Coastal Research, Special Issue 56, Coconut Creek.
Barzegar, B. 2011. The Modelling of Bathymetry Changes in Creation of rip Currents. Australian Journal of Basic and Applied Sciences, 5: 8. Amman.
Benedet, Lindino, Charles Finkl and Antonio henriquo Klein, 2004. Morphodynamic classification of beaches on the Atlantic coast of Florida: geographical variability of beach types, beach safety and coastal hazards. Journal of Coastal Research, Special Issue 39, Coconut Creek.
Bowen, Anthony J. 1969. Rip currents: 1. Theoretical investigations. Journal of Geophysical Research, 74: 23, Malden ma.
Brander, Robert W and Jamie MacMahan, 2011. Future challenges for rip current research and outreach. Rip Currents, Beach Safety, Physical Oceanography and Wave Modeling, edited by: Leatherman, S. and Fletemeyer, J., CRC Press, Boca Raton, FL, Florida.
Bruneau, Nicolas, Bruno Castelle, Philippe Bonneton, Rodrigo Pedreros, Rafael Almar, Natalie Bonneton, Patrice Bretel, Jean-Paul Parisot and Nadia Sénéchal, 2009. Field observations of an evolving rip current on a meso-macrotidal well-developed inner bar and rip morphology. Continental Shelf Research, Vol 29, No 14, Oxford.
Drønen, Nils, Harshinie Karunarathna, Jørgen Fredsøe, B Mutlu Sumer and Rolf Deigaard, 2002. An experimental study of rip channel flow. Coastal Engineering, Vol 45, No 3-4, Amsterdam.
Folk, Robert Louis and William C Ward, 1957. Brazos River bar [Texas]; a study in the significance of grain size parameters. Journal of Sedimentary Research, Vol 27, No 1, Tulsa.
Ghorbani, Ali and Amirhosein Rasulyjamnany, 2012. The modelling of rip channel in creation of rip currents. Indian journal of science and technology, Vol 5, No 4, Chennai.
Li, Zhiqiang, 2016. Rip current hazards in South China headland beaches. Ocean & Coastal Management, Vol 121, No 1, Oxford.
Lin, Hsueh-Mei, I-Hsing Hwang and Su-Min Shen, 2009. The changes at long time scale on the beach type and rip current of the Fulong Beach in the North coast of Taiwan. Journal of Geography Research, Vol 50, No, 3, Hoboken.
MacMahan, Jamie H, Ed B Thornton and Ad JHM Reniers, 2006. Rip current review. Coastal Engineering, Vol 53, No 2-3, Amsterdam.
MacMahan, Jamie, Ed B Thornton, Tim P Stanton and Ad JHM Reniers, 2005. RIPEX: Observations of a rip current system. Marine Geology, Vol 218, No 1-4, Amsterdam.
Scott, Timothy, Paul Russell, Gerd Masselink, MJ Austin, S Wills and A Wooler, 2011. 14 rip current hazards on large-tidal beaches in the United Kingdom. Rip Currents: Beach Safety, Physical Oceanography, and Wave Modeling, CRC Press, Boca Raton, Florida.
Udden, Johan August, 1914. Mechanical composition of clastic sediments. Bulletin of the Geological Society of America, Vol 25, No 1, Boulder.
Wentworth, Chester K, 1922. A scale of grade and class terms for clastic sediments. The journal of geology, Vol 30, No 5, Chicago.
Winter, Gundula, Matthieu de Schipper Ap van Dongeren and Jaap van Thiel de Vries, 2012. A field and numerical study into rip currents in wind-sea dominated environments. Coastal Engineering, Vol 1, No 33, Amsterdam.
Wright, Lynn D and Andrew D Short, 1984. Morphodynamic variability of surf zones and beaches: a synthesis. Marine Geology, Vol 56, No 1-4, Amsterdam.
Wright, Lynn D, Andrew D Short and MO Green, 1985. Short-term changes in the morphodynamic states of beaches and surf zones: an empirical predictive model. Marine Geology, Vol 62, No 3-4, Amsterdam.
lorestani, G., & esmaili, R. (2021). survey of rip current hazard in Base of Sefidroud River Delta. Geographical Planning of Space, 10(38), 59-70. doi: 10.30488/gps.2020.147221.2884
MLA
ghasem lorestani; reza esmaili. "survey of rip current hazard in Base of Sefidroud River Delta". Geographical Planning of Space, 10, 38, 2021, 59-70. doi: 10.30488/gps.2020.147221.2884
HARVARD
lorestani, G., esmaili, R. (2021). 'survey of rip current hazard in Base of Sefidroud River Delta', Geographical Planning of Space, 10(38), pp. 59-70. doi: 10.30488/gps.2020.147221.2884
VANCOUVER
lorestani, G., esmaili, R. survey of rip current hazard in Base of Sefidroud River Delta. Geographical Planning of Space, 2021; 10(38): 59-70. doi: 10.30488/gps.2020.147221.2884