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KARAKTERISASI 3D SUBSTRAT BENTIK PERAIRAN KARANG PULAU BONETAMBUNG MAKASSAR Muhammad Banda Selamat; Amir Hamzah Muhiddin; Marzuki Ukkas
Torani Journal of Fisheries and Marine Science Vol. 24 No. 2 (2014)
Publisher : Hasanuddin University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (15.149 KB) | DOI: 10.35911/torani.v24i2.223

Abstract

The objective of this study is to characterize benthic substrate of Bonetambung reef area using worldview 2 highresolution satellite imagery. About 14.273 depth spot were deploy to build bathimetric model of the study area. The correlation of pixel radiance value from satellite imagery and depth value from field measurement werebecame the basis to classify geomorphologic zone of shallow water area up to 7 meter depth. Between threeinterpolator tested, the natural neighbor interpolator has produced the best bathymetric model with root meansquare error 0.3 meter and benthic substrate coverage model with thematic accuracy 62%. These approach beable to recognize four substrate type in general, such as sand, seagrass, rubble and coral. Geomorphicsegmentation based on bathymetric profile and radiance value of worldview 2 imagery may also maps the reefflat, reef slope and lagoon area hence may support the benthic substrate modeling. This study showed us apotential technic to develop a modelling for juvenile fish transport at Bonetambung coral waters.Key words: benthic substrate bathymetry, worldview imagery, thematic accuracy
KARAKTERISASI SPEKTRAL KONDISI PADANG LAMUN MENGGUNAKAN CITRA LANDSAT 8 OLI Taufikurrahman Taufikurrahman; Muhammad Banda Selamat; Supriadi Mashoreng
Jurnal Ilmu Kelautan SPERMONDE VOLUME 3 NOMOR 2, 2017
Publisher : Hasanuddin University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20956/jiks.v3i2.3014

Abstract

The high level of human activity in coastal areas has had an impact on seagrass beds. The advancement of satellite imaging technology makes monitoring seaweed conditions even easier. The purpose of this study was to identify the spectral reflectance patterns of different seagrass cover levels and make it the basis for mapping the seagrass condition on Barranglompo Island. Based on google earth has been determined 4 sampling stations that represent the spread of seagrass on Barranglompo Island. Each station is divided into 4 sub-stations from land to sea. Sampling of seagrass cover was carried out by the McKenzie (2003) method modified by close sampling, to 30 x 30 square meters following the spatial resolution of Landsat image 8. Each observation point was estimated the percentage of seagrass cover and the dominant species. Digital seagrass pixel extraction is performed from band 1 to 7 landsat 8 according to point position in the field and then grouped by cover class and condition. Seagrasses found in Barranglampo Island are 8 species: Enhalus acoroides, Thalassia hemprichii, Halophila ovalis, Cymodocea rotundata, Cymodocea serulata, Halodule uninervis, Halodule pinifolia and Syringodium isoetifolium. In general, Enhalus acoroides and Thalassia hemprichii have higher closure than other seagrass species. The spectral reflection of seagrass landscape imagery 8 OLI channel 1 - 7 is good enough to show the seagrass condition in bad category, good enough, and good. Spectral reflection of the seagrass has a peak on the green channel. The worse the seagrass condition the higher the spectral reflection. Seagrass with bad conditions has a low cover so that other substrates such as sand will contribute to the spectral value recorded by satellite sensors. This result will facilitate mapping of seagrass condition on small islands by using Landsat 8 OLI image.Keywords: seagrass condition, spectral reflection, landsat 8, South Sulawesi
SPATIAL COMPOSITION OF BENTHIC SUBSTRATE AROUND BONTOSUA ISLAND Muhammad Banda Selamat; Mahatma Lanuru; Amir Hamzah Muhiddin
Jurnal Ilmu Kelautan SPERMONDE VOLUME 4 NOMOR 1, 2018
Publisher : Hasanuddin University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20956/jiks.v4i1.3801

Abstract

Coral reefs and seagrass are natural fortress for small islands from waves and ocean currents. The spatial distribution of these benthic substrate should be known and monitored regularly. This study aims were to map existing benthic substrates on the reef flat of Bontosua Island, determine the spatial composition and develop index ratio. Benthic substrates were surveyed using geotagging technique. Their distribution were estimate using Quickbird image that was rectified and classified using ISOcluster method and validate by 240 selected photos. The seagrass were surveyed at 8 stasions to record percent cover and species composition. Depth profiles were track along 10 reef flat line segment. Bontosua Island has an elongated shape from South to Northwest. This study had produced a benthic substrate distribution map with thematic accuracy 76%. Total area able to map were 54.2 hectares. About 43% benthic substrates at Bontosua were mixture of coral rubble, seagrass and algae, 20% was mixture of rubble and algae, 16% dominated by seagrass, 13% mixture of sand and seagrass and 8% substrate were dominated by live coral. There were eight seagrass species found with average percent cover 37.2 ± 12.5 percent. The spatial ratio of live coral, seagrass and mixed substrate for West side reef flat was 2:20:49 and 1:9:9 for East side. This indicate that the distribution of benthic substrates on the West side is much wider than on the East side. This approach potentially applied to study the relationship between benthic substrate composition and the deformation of small islands.
INTEPOLATOR DALAM PEMBUATAN KONTUR PETA BATIMETRI Vincentius P. Siregar; Muhammad Banda Selamat
Jurnal Ilmu dan Teknologi Kelautan Tropis Vol. 1 No. 1 (2009): Elektronik Jurnal Ilmu dan Teknologi Kelautan Tropis
Publisher : Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (510.132 KB) | DOI: 10.29244/jitkt.v1i1.7937

Abstract

Suatu model batimetri digital dapat dibangun melalui interpolasi sejumlah besar titik kedalaman hasil pemeruman. Studi ini menggunakan dua skenario pengolahan yaitu menggunakan keseluruhan data perum dan menggunakan data perum terpilih. Pada setiap skenario pengolahan data, ada tiga metode interpolasi yang dibandingkan yaitu metode inverse distance to power, kriging dan minimum curvature.Nilai RMSE yang didapatkan dari masing-masing interpolator pada setiap skenario tersebut ternyata cukup bervariasi. Secara umum metode Kriging lebih efektif digunakan untuk menghasilkan gambar kontur kedalaman perairan dibandingkan dengan metode lainnya. Hasil studi ini memperlihatkan perlunya penanganan data agar pola suatu unsur spasial (kontur kedalaman) dapat ditampilkan secara lebih baik.Kata Kunci: interpolasi, kriging, inverse distance to power, minimum curvature,batimetri
Pelatihan dan Bimbingan Metode Perbaikan dan Perawatan Mesin Outboard pada Nelayan di Desa Topejawa, Takalar Faisal Mahmuddin; Syerly Klara; Muhammad Banda Selamat; Surya Hariyanto
JURNAL TEPAT : Teknologi Terapan untuk Pengabdian Masyarakat Vol 5 No 1 (2022): Kebersamaan dalam Membangun Masyarakat Tangguh dan Gesit
Publisher : Faculty of Engineering UNHAS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25042/jurnal_tepat.v5i1.258

Abstract

The high cost of repair and maintenance of outboard engines is one of the big problems experienced by fishermen, their lack of knowledge about engine repair and maintenance results in them having to spend more money for their repair and maintenance costs. For this reason, the purpose of this service program is to train and guide the community on outboard engine repair and maintenance methods. The activity was carried out on August 21, 2021 in Topejawa Village, Mangarabombang District, Takalar Regency. This activity involved more than 20 participants from 2 (two) fishermen groups in Topejawa Village, Takalar. This activity was held in the coastal area of ​​Topejawa Village and was opened directly by the Representative of the Marine and Fisheries Service of the Takalar Government. From the results of the qualitative analysis, it was found that before the activity was carried out, the understanding of the community/partners of the working principle and machine operation, as well as machine maintenance and repair techniques were in the range of 30-50%. After that, the proportion of people's understanding increased by 75-90%. In addition, the fishermen also save on the cost of repairing and maintaining boat engines, which in turn increases the productivity and welfare of the fishing community, especially in the place where activities was carried out.