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All Journal Jurnal Tataloka Jurnal Hutan dan Masyarakat
Roland Alexander Barkey
Universitas Hasanuddin
Civil Engineering, Building, Construction & Architecture

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Model Spasial Level Dasar Bangunan Kota Tepian Air (Studi Kasus: Kota Makassar) Sudirman Nganro; Slamet Trisutomo; Roland Alexander Barkey; Mukti Ali; Nurjannah Nurdin
TATALOKA Vol 22, No 3 (2020): Volume 22 No. 3, August 2020
Publisher : Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/tataloka.22.3.418-427

Abstract

Flooding is a threat to coastal cities such as Makassar City. To Avoid the threat of flooding, it is necessary to determine the ground level of the building. This study aims to develop a spatial model for determining the ground level of buildings for Makassar City based on climate change data and environmental geography. Prediction of sea level rise using MAGICC/SCENGEN application, GIS-based satellite image analysis, rainfall analysis using Thiessen polygon method, surface runoff coefficient value determined by Cook method, and design flood discharge analysis with HSU Nakayasu method. The spatial model of the ground level of Makassar City building for 2030 is a function of sea tides, sea level rise due to climate change, alluvial floods and inflow floods that can occur simultaneously. The model produces a spatial map with attributes of geographic coordinates (x,y,z).
ANALISIS KOEFISIEN LIMPASAN PERMUKAAN KOTA MAKASSAR DENGAN METODE COOK Sudirman Nganro; Slamet Trisutomo; Roland Alexander Barkey; Mukti Ali
TATALOKA Vol 21, No 2 (2019): Volume 21 No. 2, May 2019
Publisher : Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/tataloka.21.2.285-292

Abstract

Rain falling on the Watershed will turn into a stream in the river, this is because the rainwater is not entirely infiltrated into the soil, the unabsorbed water is called surface runoff. Factors affecting runoff are meteorological elements and drainage elements. This study aims to calculate the surface runoff coefficient using land cover maps 2017 and 2050, slope and soil type as parameters. Cook method divides the watershed characteristics into 4 sections as parameters to calculate the runoff coefficient of topography, soil type, vegetation cover and surface deposit. Each parameter is weighted based on its characteristics to calculate the coefficient of surface runoff symbolized by the letter C. The analysis results show that in the year 2017 obtained the value of C = 0.4734 and for the year 2050 C = 0.4785. There's a difference of 0.0051 coefficient of runoff value between land use map and land cover in 2017 and 2050. The results of this study will be used to calculate the flood discharge design in the object of research in Makassar City.
Karakteristik Tanah Longsor di Daerah Aliran Sungai Tangka Usman Arsyad; Roland Alexander Barkey; Wahyuni Wahyuni; Karla Kembongallo Matandung
Jurnal Hutan dan Masyarakat VOLUME 10 NOMOR 1, JULI 2018
Publisher : Fakultas Kehutanan, Universitas Hasanuddin

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1309.46 KB) | DOI: 10.24259/jhm.v0i0.3978

Abstract

Landslides occur as a result of ground movement on steep slopes, and the high humidity (moisture), and the sparse vegetation (open land). The Local conditions is an interrelated components. The process of landslides can be explained that the water soak into the soil will add weight to the ground. If the water penetrates the soil acts as a watertight sliding plane, the ground becomes slippery and soil weathering on it will move to follow the slope. This study aims to determine the type of landslide, landslide characteristics and landslides causing factors. This research was conducted in September 2015 in Watershed Tangka. The study consisted of three stages, namely the determination of the coordinates of the location of the landslide, landslide determining the location of the sample, the determination of the type of landslide, slope measurements, measurements of the dimensions of landslide and infiltration. Research results obtained are the coordinates of the location of as many as 17 points landslide, landslide types of translation and rotation, land cover and soil texture. There is no difference in the type of soil, infiltration rate, vegetation, geologi, slope and rainfall in both types of landslide are found. 
Co-Authors Karla Kembongallo Matandung Mukti Ali Nurdin, Nurjannah Slamet Trisutomo Slamet Trisutomo Sudirman Nganro Usman Arsyad Wahyuni Wahyuni