Coastal Vulnerability Zonation of Pinrang District and Parepare City Area Based on Morphodynamic Review
Haerany Sirajuddin1, D. A. Suriamihardja2, A. M. Imran3, M. Arsyad Thaha4
1Haerany Sirajuddin, Graduate Doctor Program of Civil Engineering, Hasanuddin University of Makassar, Indonesia.
2D. A. Suriamihardja, Department of Physics, Hasanuddin University of Makassar, Indonesia.
3A. M. Imran, Department of Geology Engineering, Hasanuddin University, Indonesia.
4M. Arsyad Thaha, Department of Civil Engineering, Hasanuddin University of Makassar, Indonesia
Manuscript Received on December 16, 2015. | Revised Manuscript Received on December 18, 2015. | Manuscript published on December 20, 2015. | PP: 23-26 | Volume-3 Issue-12, December 2015. | Retrieval Number: L06771231215/2015©BEIESP
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© The Authors. Blue Eyes Intelligence Engineering and Sciences Publication (BEIESP). This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)
Abstract: The understanding and analysis of morphodynamic are essential to explain coastal vulnerability. This paper aims to present a mophodynamic review by assessing validity of the Wright and Short method, and then make zonation map The research method using the conceptual beach classification based on relationships between the characteristic of different types of beaches consisting of wave condition, sediment size, shoreline change and field observations that indicating the occurrence of coastal erosion. The classification presented by Wright and Short known as a function of the dimensionsless fall velocity parameter (Ω) or Dean’s number. In this research, observations are presented from 15 beaches around the west coast of Sulawesi Island and their divided into six zones. Morphodynamic state of Lapakaka and Lanrisang – Ujung Tape beaches are reflective (Ω = 0.179 – 0.801), coarse grain with a D50 of 0.31 – 1.52. Maroneng and Ujung Lero beaches are intermediate (Ω = 1.842 – 2.389), fine – coarse grain sediment and D50 of .0.16 – 0.53. Kappe – Data and Sibo beaches are disspative (Ω = 1.842 – 14.089.), fine grain sediment and D50 of 0.22 – 0.29. The interpretation result of Landsat 5 (1995) and Landsat 8 (2015), showed significant shoreline change by erosion process in the Lapakaka beach reached about 26040.62 m2 and Lanrisang – Ujung Tape of 166727.64 m2 . Based on morphodynamic review and field study, showed that Lapakaka and Lanrisang – Ujung Tape beaches are susceptible, Maroneng and Ujung Lero beaches are intermediate and Kappe – Data and Sibo beaches are resilience.
Keywords: Morphodynamic, erosion, vulnerability, zonation