The shape parameter and its modification for defining coastal profiles

• Published in: Environmental Geology Vol. 57; no. 2; pp. 259 - 266
• Main Authors: Türker, Umut, Kabdaşli, M. Sedat
• Format: Journal Article
• Language: English
• Published: Berlin/Heidelberg Springer-Verlag 01-03-2009
• Subjects: Earth and Environmental Science; Earth Sciences; Geology; Special Issue; Grain size; Shape parameter; Coastal profile; Fall velocity; Equilibrium
• ISSN: 0943-0105; 1866-6299
• DOI: 10.1007/s00254-008-1269-1

The shape parameter is important for the theoretical description of the sandy coastal profiles. This parameter has previously been defined as a function of the sediment-settling velocity. However, the settling velocity cannot be characterized over a wide range of sediment grains. This, in turn, limits the calculation of the shape parameter over a wide range. This paper provides a simpler and faster analytical equation to describe the shape parameter. The validity of the equation has been tested and compared with the previously estimated values given in both graphical and tabular forms. The results of this study indicate that the analytical solutions of the shape parameter improved the usability of profile better than graphical solutions, predicting better results both at the surf zone and offshore.