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All Journal Torani Journal of Fisheries and Marine Science POSITRON Journal of Degraded and Mining Lands Management Anjoro : International Journal of Agriculture and Business
Sakka Sakka
FKIP UNTAD
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Economics, Econometrics & Finance Energy Environmental Science Physics Social Sciences

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Seismic Site Classification Using the Multichannel Analysis of Surface Waves Method Syamsuddin, Erfan; Aswad, Sabrianto; Assegaf, Muhammad Alimuddin Hamzah; Rasimeng, Syamsurijal; Sakka, Sakka; Syamsuddin, Syamsuddin; Nasri, Muhammad; Syihab, Mufly Fadla
POSITRON Vol 12, No 2 (2022): Vol. 12 No. 2 Edition
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam, Univetsitas Tanjungpura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26418/positron.v12i2.53869

Abstract

The soil has a variety of qualities that affect its ability to support the weight of a structure. One of these features is soil stiffness, which can be determined using the surface wave method to prevent soil collapse. Multichannel Analysis of Surface Waves (MASW) is one of the non-invasive methodologies used in this study to investigate subsurface structures in North Sumatra, Indonesia. This method utilizes the dispersion properties of Rayleigh waves, producing a dispersion curve to get the shear wave velocity (Vs) through inversion. The shear wave velocity can be used to examine the soil stiffness qualities. The dispersion curve explains the relationship between shear wave velocity and depth, which can subsequently be used as a site class parameter. This survey uses three lines with one shot for each line which uses thirty geophones. The seismic source used is a gun with the type M16.38 Cal. Each line consists of 30 geophones with a distance of 5 m. The entire track is 160 m long and lasts for 2048 seconds with a sampling rate of 0.00025 seconds. The average shear wave velocity measured at three measurements was 372.5 m/s on line P1, 347.1 m/s on line P2A, and 311.0 m/s on line P2B, respectively. Overall, the soil classification on the P1 line is class C, and the P2A and P2B lines are class D, which is suitable for development planning areas.
Water availability analysis of Walanae River Lias, Syamsul Arifin; Assegaf, A; Sakka, Sakka; Paharuddin, Paharuddin; Syamsuddin, E
Anjoro: International Journal of Agriculture and Business Vol 3 No 1 (2022): Anjoro
Publisher : Agribusiness Department, Agriculture and Forestry Faculty, Universitas Sulawesi Barat, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31605/anjoro.v3i1.1442

Abstract

The Walanae Watershed plays an essential role as a water provider for irrigation and industry in the central part of South Sulawesi Province, Indonesia. The Walanae River flows through Enrekang, Soppeng, and Bone Regencies. This paper describes the availability of water in the Walanae watershed. Water discharge of the Walanae river recorded at Tampangeng station from 2000 to 2014 is analyzed using descriptive statistics to obtain a flow duration curve. The calculation results show that the available discharge is quite extensive throughout the year with a range of 16.5 m3.s–1–316 m3.s–1, and an average of 138 m3.s–1. The minimum discharge generally occurs from September to November, while the peak discharge generally occurs in January and July. The results show that water availability for 9, 10, 11 months, and all years are: 92.2 m3.s–1, 83.4 m3.s–1, 66.3 m3.s–1, and 15.8 m3.s–1, respectively.
ANALISIS KERENTANAN PANTAI BERDASARKAN COASTAL VULNERABILITY INDEX (CVI) DI PANTAI KOTA MAKASSAR Sakka, Sakka; Paharuddin, Paharuddin; Rupang, Eunike
Torani Journal of Fisheries and Marine Science Vol. 24 No. 3 (2014)
Publisher : Hasanuddin University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (15.149 KB) | DOI: 10.35911/torani.v24i3.237

Abstract

The vulnerability of Makassar coast was measured using parameters of Coastal Vulnerability Index (CVI). CVIvalue was determined using geomorphology, shoreline change, coastal slope, mean wave height, mean tidalrange, and relative sea level change parameters. The Makassar coast was divided into a numbers of cells, eachwith the length of 1 km and width of 0.5 kminto the sea. CVI values werecalculated for each cell and the coastalvulnerability wereclassifiedinto five categories: very low - low - medium - high - very high. The results show thatthe coastline with high to very high vulnerability index are located at the southern part of Makassar, while thenorthern coastline generally have low to moderate vulnerability. The CVI parameters which contributed to highsusceptibilitywere the coastal slope and the shoreline change parameters. Keywords: Coastal Vulnerability Index, coastal slope and shoreline change, Makassar.
Impact of wave energy and sediment transport on shoreline changes: A multi-temporal satellite image analysis in Galesong, Takalar Regency, Indonesia Sakka, Sakka; Assegaf, Alimuddin Hamzah; Amiruddin, Amiruddin; Saaduddin, Saaduddin; Azis, Siti Nur Azisah Aprianti; Ismail, Andi Muhammad Imran
Journal of Degraded and Mining Lands Management Vol. 12 No. 4 (2025)
Publisher : Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15243/jdmlm.2025.124.8179

Abstract

Galesong Beach, located in Takalar Regency, South Sulawesi, is a coastal area that has experienced significant shoreline changes due to anthropogenic activities, such as coastal development and land use, and oceanographic factors, particularly wave activity. This study aimed to analyze the magnitude and direction of wave-induced sediment transport and its influence on erosion and accretion rates along Galesong Beach. Wave height was calculated using the Coastal Engineering Manual (CEM) method based on wind data, while sediment transport volume was estimated using the Van Rijn method. Shoreline change rates were identified using Landsat 7 ETM+ and Landsat 8 OLI imagery from 2010 to 2023, analyzed with the Digital Shoreline Analysis System (DSAS) to determine annual erosion and accretion distances and rates. The study area was divided into seven zones, each with varying coastal dynamics. Results showed that monthly wave heights peaked in December, January, and February, ranging from 1.54 to 2.21 m. Sediment transport was estimated at 2,894.9 to 13,703.42 m³/year northward and 5,405.77 to 13,956.26 m³/year southward, resulting in both erosion and accretion. The maximum annual accretion rate reached 10.77 m/year, while the maximum erosion rate was 3.28 m/year. The furthest accretion reached 141.27 m, and the greatest erosion extended to -43.05 m. The highest accretion occurred in North Boddia, while the most severe erosion was found in Bontoloe. This study offers insights into local coastal dynamics and serves as a foundation for effective and sustainable coastal management strategies.
Co-Authors AA Sudharmawan, AA Alimuddin Hamzah Assegaf, Alimuddin Hamzah Amiruddin Amiruddin Assegaf, A Assegaf, Muhammad Alimuddin Hamzah Azis, Siti Nur Azisah Aprianti Eunike Rupang, Eunike Ismail, Andi Muhammad Imran Kamaluddin Kamaluddin Lias, Syamsul Arifin Muhammad Nasri Paharuddin Sabrianto Aswad, Sabrianto Saduddin Saaduddin Syamsuddin Syamsuddin Syamsuddin, E Syamsuddin, Erfan Syamsurijal Rasimeng Syihab, Mufly Fadla Yusuf Kendek