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Spatial Analysis of the River Line and Land Cover Changes in the Kampar River Estuary: The Influence of the Bono Tidal Bore Phenomenon Putra, Aprizon; Wisha, Ulung Jantama; Kusumah, Gunardi
Forum Geografi Vol 31, No 2 (2017): December 2017
Publisher : Universitas Muhammadiyah Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1039.335 KB) | DOI: 10.23917/forgeo.v31i2.5290

Abstract

The Kampar River estuary is well known for a tidal-bore phenomenon called ‘Bono waves’. The emergence of Bono waves has a significant influence on the estuary system of Kampar River. Scoured materials, resulting from the hydraulic jump of the tidal bore, are carried into the middle of the river. These materials are then deposited when the velocity of the river decreases as a result of the collision of the tidal current from the sea and the river flow. The aim of this was to determine the area of erosion and sedimentation with respect to the river line and perform land-cover change analysis for the area around the Kampar River estuary for the years of 1990, 2007, 2010 and 2016. The method employed was the supervised maximum likelihood (SML) classifications, which uses an overlay technique to yield alternate information on the river line and land-cover changes in the form of time-series data. The largest erosion occurred during 1990–2007, for which the average change reached 2.36 ha/year. The smallest erosion occurred during 2010–2016, when the change reached 0.41 ha/year. The largest land-cover change was found during 1990–2016, which occurred in the land for agriculture/plantations (11.57 ha/year), building/settlement (48.11 ha/year) and scrubland (30.88 ha/year). The other types of land cover, such as bare land and sediment deposition, varied every single year. The changes to the river line are caused by land-cover changes, and the Bono waves that lead to erosion and sedimentation that is not stable in the middle of the river and downstream.
KUALITAS PERAIRAN TELUK BUNGUS BERDASARKAN BAKU MUTU AIR LAUT PADA MUSIM BERBEDA Tanto, Try Al; Kusumah, Gunardi
Maspari Journal : Marine Science Research Vol 8, No 2 (2016): Edisi Juli
Publisher : UNIVERSITAS SRIWIJAYA

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1056.198 KB) | DOI: 10.36706/maspari.v8i2.3490

Abstract

Pembangunan di kawasan Bungus berkembang pesat, dapat menjadi penyebab kerusakan lingkungan  perairan  sekitarnya.  Laporan  dari  media  lokal  dan nasional,  terjadi pencemaran  air  laut  dan  tingginya  sedimentasi.  Penelitian ini  menjadi  penting  karena belum  banyak  studi  terkait  pencemaran perairan  dilakukan.  Pengambilan  data  air  laut dilakukan  di  15  titik pengukuran  pada  permukaan  dan  kedalaman  5  m.  Data tersebut dianalisis di laboratorium serta pengukuran secara  in-situ  untuk pengukuran permukaan. Selain itu juga dilakukan pengukuran pada 3 muara sungai besar untuk pengukuran TSS dan melihat  sedimentasi. Waktu pengambilan data dilakukan pada musim berbeda, yaitu Bulan  Mei  dan  November  2013, sehingga  diperoleh  data  yang  bervariasi  sesuai  dengan kondisi musim. Sampai akhir tahun 2013, kualitas air laut (kekeruhan, pH, salinitas, suhu, DO, BOD, amoniak) perairan Teluk Bungus masih berada pada batas aman sesuai dengan baku  mutu,  baik  yang  terjadi  pada  musim  kemarau  maupun musim  hujan.  Hal  berbeda terjadi pada nilai TSS di sekitar muara, dengan nilai  berada diluar batas  aman baku mutu dan kekeruhan perairan tinggi saat musim hujan. Pada umumnya, pencemaran perairan di Teluk Bungus disebabkan oleh tingginya sedimentasi.KATA KUNCI:   Kekeruhan,  kualitas  perairan,  pencemaran  perairan, sedimentasi, Teluk Bungus.
Sedimentary Environments of the Inshore Pemangkat Region Sambas, West Kalimantan (Lingkungan Sedimen di Perairan Pemangkat, Sambas, Kalimantan Barat) Solihuddin, Tubagus; Kusumah, Gunardi
ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 19, No 1 (2014): Jurnal Ilmu Kelautan
Publisher : Marine Science Department Diponegoro University

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Abstract

Peningkatan produk-produk perikanan melalui industrialisasi dengan menekankan pada pengembangan perikanan budidaya laut yang membutuhkan data pendukung lingkungan laut termasuk sediment dasar laut. Penelitian lingkungan sedimen di Perairan Pemangkat bertujuan untuk mendapatkan informasi mengenai komposisi sedimen permukaan dasar laut, konsentrasi mineral logam dan total padatan tersuspensi. Beberapa sampel sedimen permukaan telah diambil pada transek yang telah ditentukan di sekitar Pantai Pemangkat dan telah dilakukan analisis mengikuti prosedur analisis granulometri, sedangkan metode AAS diterapkan untuk menentukan konsentrasi mineral logam. Selain itu, beberapa sampel air laut juga telah diambil menggunakan botol Nansen untuk mendapatkan total padatan tersuspensi. Informasi tersebut sangat bermanfaat bagi manager dan atau pemerintah daerah dalam menilai, merencanakan dan mengelola kawasan peisir dan lingkungan laut. Standar kualitas air yang dikeluarkan oleh Kementerian Negara Lingkungan Hidup digunakan sebagai acuan untuk mengkalibrasi hasil penelitian. Studi ini menunjukkan dominasi sedimen lumpur dan tingginya konsentrasi TSS, mengindikasikan bahwa Perairan Pemangkat tidak direkomendasikan untuk pengembangan kawasan perikanan budidaya laut. Kata kunci: sedimen, mineral logam, total padatan tersuspensi Increasing fisheries products through industrialisation with emphasizing on marine aquaculture development requires supporting data on marine environments including seafloor sediments. Research on sedimentary environments of the inshore of Pemangkat region was aimed to obtain seafloor sediment composition, heavy metal and total suspended solid (TSS) concentrations. Some surface sediments samples were collected in transects across the selected Pemangkat coast and analysed following the procedure of granulometric analysis, whilst AAS (Atomic Absorption Spectroscopy) was applied to determine heavy metal concentrations (e.g. Hg, Pb, Cd, Cu, and Zn). Additionally, water samples were also collected using Nansen bottle to derive TSS concentrations. This sort of information will be valuable for manager and/or local government to assess, plan and manage coastal zone and marine environment. A standard of water quality issued by the State Ministry for Environment was then used as a reference to calibrate the results. This study showed silt (mud) sediment dominance and high TSS concentrations, indicating that the inshore Pemangkat region was not highly recommended for marine aquaculture development. Keywords: sediment, heavy metal, total suspended solid
Kajian kesesuaian lingkungan untuk pengembangan wisata di Pantai Ganting, Pulau Simeulue, Provinsi Aceh Mutmainah, Herdiana; Kusumah, Gunardi; Altanto, Try; Ondara, Koko
DEPIK Jurnal Ilmu-Ilmu Perairan, Pesisir dan Perikanan Vol 5, No 1 (2016): APRIL 2016.
Publisher : Faculty of Marine and Fisheries, Syiah Kuala University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1202.371 KB) | DOI: 10.13170/depik.5.1.3844

Abstract

Abstract. Simeulue Island is situated Indian Ocean in western part of Aceh Province, this is one of the outer island in Indonesia. Simeulue has big potency in marine resources such as  clean waters and beautiful beach, coral reefs and mangrove ecosystems. Therefore, Simeulue is very promising as an ecotourism destination. The objective of present study was to evaluate the condition of the water quality and the potency for a marine ecotourism development. The feasibility study was conducted on August in Ganting Beach, Village of Kuala Makmur, Simeulue Island. The purposive random sampling method was used to determine twelve sampling stations. The measured water quality parameters were pH, temperature, salinity, turbidity, dissolved oxygen, brightness, BOD5, odors, oil and debris. These parameters were analyized and mapped using software ODV, and then compared to the sea water quality standard for marine tourism as well as the characteristics of the coast to the suitability index of recreational area. The results showed that the water quality of Ganting Beach is very suitable for recreational activities (index 77, category S1)  andit is suitable for swimming and also for boating tourism activities, banana boats and jet skis (index 16, category S2).Keywords: water quality; marine tourism; Ganting Beach Abstrak. Pulau Simeulue, merupakan salah satu pulau terdepan sebelah barat Negara Kesatuan Republik Indonesia (NKRI), dan terletak di Samudera Hindia.Simeulue memiliki potensi sumberdaya laut yang besar, diantaranya perairan yang besih dan jenih, pantai yang indah, terumbu karang dan hutan bakau, sehingga sangat berpotensi untuk dikembang menjadi tujuan wisata. Penelitian ini bertujuan untuk menilai kondisi kualitas perairan dan potensi kesesuaian wisata Pulau Simeulue.Penelitian ini dilaksanakan pada bulan Agustus 2015 bertempat di Pantai Ganting, Kelurahan Kuala Makmur, Kabupaten Simeulue. Sebanyak 12 lokasi pengambilan sampel kualitas air ditetapkan secara purposive random sampling. Kualitas air yang diukur meliputi; pH, suhu, salinitas, kekeruhan, oksigen terlarut, kecerahan, BOD5, bau, lapisan minyak dan sampah. Data tersebut kemudian dipetakan dan dianalisis menggunakan software Ocean Data View (ODV), kemudian dibandingkan dengan baku mutu air laut untuk wisata bahari serta karakteristik pantai untuk indeks kesesuaian kawasan wisata rekreasi. Hasil penelitian menunjukkan bahwa kualitas perairan Pantai Ganting sangat sesuai untuk kegiatan rekreasi dan berenang (indeks 77, kategori S1) dan sesuai untuk kegiatan wisata berperahu, banana boat dan jet ski (indeks 16, kategori S2).Kata kunci:kualitas perairan; wisata bahari; Pantai Ganting.
PEMETAAN KERENTANAN PESISIR PULAU SIMEULUE DENGAN METODE CVI (COASTAL VULNERABILITY INDEX) Dhiauddin, Ruzana; Gemilang, Wisnu Arya; Wisha, Ulung Jantama; Rahmawan, Guntur Adhi; Kusumah, Gunardi
EnviroScienteae Vol 13, No 2 (2017): EnviroScienteae Volume 13 Nomor 2, Agustus 2017
Publisher : Universitas Lambung Mangkurat

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Abstract

The diversity function of coastal areas requires the increasing need for land and infrastructure that will lead to new problems such as changes in coastal morphology, the occurrence of erosion and accretion, which is supported by the population growth caused the increasing of coastal vulnerable towards hazards. This paper aims to explain the parameters affect Simeulue Island’s coastal vulnerability - beach slope, geomorphology, geology, shoreline change, mean tidal range and mean wave height - and its mapping. The data used were the bathymetry, tide, and currents, the topography of coastal morphology, LANDSAT imagery of 2000 and 2015. To determine the coastal vulnerability level, we implemented CVI (Coastal Vulnerability Index) method of 6 parameters. Finally, we found that CVI from these physical parameters ranges between 1.291to 5.00, which were classified into five classes; 1.291 – 1.826 (very low), 1.826 – 2.449 (low), 2.449 – 2.887 (moderate), 2.887 – 3.651(high), and 3.651 – 5.00 (very high).
Analysis of Water Quality for Tourism Suitability at Indonesia’s Front Island: Ganting Beach, Simeuleu Island, Nanggroe Aceh Darussalam Mutmainah, Herdiana; Kusumah, Gunardi; Altanto, Try; Ondara, Koko
AQUASAINS Vol 4, No 2 (2016)
Publisher : Jurusan Perikanan dan Kelautan

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Abstract

Indonesia is an archipelago country with potential marine and coastal. Simeulue Island, NAD is one of the leading island in west of the Republic of Indonesia and located in Hindia Ocean. Simeulue have potential marine waters such as fish, lobster, crab and sea cucumber as well as ecosystems such as coral reefs and mangroves. Simeulue is an area that affected by the tsunami or Smong (in local term means running) at eleven years ago on 26 December 2004. A big change that happen is the accretion on most coasts such as in the area around the northwest to the northeast. This accretion marked by the widening of the coast towards the sea and the lifting of the corals to the surface because ofthe movement of tectonic plate subduction Sunda arc (Natawidjaja, 2007). This study aims to determine the condition of the water quality and the potential suitability of a marine tourism in this region to foreign countries. Location of study at Ganting Beach, Village of Kuala Makmur, Simeulue regency, Simeulue Island. The research was conducted in August 2015. The number of sampling station is 12 points with purposive sampling method. Observation of water quality parameters are pH, temperature,salinity, turbidity, dissolved oxygen, brightness, BOD5, odors, oil and debris. These parameters are then mapped using software ODV, analyzed and compared with the sea water quality standard for marine tourism as well as the characteristics of the coast to the suitability index of recreational area. Water quality parameters showed pH values ranged from 10.05 to 10.25; temperature from 29.80 to 31.90 (° C); salinity from 27.60 to 32.70 (ppt); turbidity from 0.00 to 3.50 (NTU); dissolved oxygen from 7.46 to 8.77 (mg / L); BOD5 from 0.897 to 1.076 (mg/ L); brightness 8.50 to 15.40 (m); no smell; no oil layer; and no debris. The results showed that the water quality P. Ganting is very suitable for recreational activities (index 77, category S1) and it is suitable for swimming and also for boating tourism activities, banana boats and jet skis (index 16, category S2).
LAJU SEDIMENTASI DI PERAIRAN BREBES, JAWA TENGAH MENGGUNAKAN METODE ISOTOP 210Pb Gemilang, Wisnu Arya; Kusumah, Gunardi; Wisha, Ulung Jantama; Arman, Ali
JURNAL GEOLOGI KELAUTAN Vol 15, No 1 (2017)
Publisher : Pusat Penelitian dan Pengembangan Geologi Kelautan

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Abstract

Beberapa upaya mitigasi terhadap bencana erosi yang terjadi di kecamatan Brebes telah dilakukan dengan penanaman mangrove, pemasangan hybrid engineering, alat pemecah ombak, namun dari keseluruhan upaya tersebut masih dianggap belum menjadi solusi terbaik mengurangi dampak bencana erosi pantai. Penelitian ini bertujuan untuk mengetahui tingkat rata-rata kecepatan sedimentasi berdasarkan umur absolut sedimen dasar laut yang dianggap mewakili daerah penyelidikan. Penentuan umur absolut sedimen berdasarkan aktifitas kandungan isotop alam 210Pb pada sedimen. Hasil perhitungan laju sedimentasi tersebut dikorelasikan dengan data debit sungai dan kondisi hidro-oseanografi yang berperan dalam sistem sedimentasi. Berdasarkan profil unsupported 210Pb pada lokasi IST-01 (Muara Pemali) dan IST-02 (Muara Nipon) rata-rata laju sedimentasinya berturut-turut 0,224 cm/tahun dan 0,211 cm/tahun, debit Sungai Pemali sebesar 14,4-48,1 m3/s, kecepatan arus pada stasiun IST-01 berkisar antara 0,001-0,1 m/s dan kecepatan arus pada stasiun IST-02 berkisar antara 0,001-0,08 m/s. Kondisi hidro-oseanografi daerah penelitian yang fluktuatif memberikan pengaruh besar terhadap proses sedimentasi. Besarnya debit sungai memiliki korelasi terhadap peningkatan besarnya nilai laju sedimentasi di Muara Pemali dan Muara Nippon. Hasil penelitian tersebut dapat dijadikan bahan rekomendasi upaya mitigasi bencana erosi di kecamatan BrebesKata Kunci: Sedimentasi, Pesisir Brebes, Hidrodinamika arus, Isotop Unsupported 210Pb Several efforts to mitigate the erosion event which occurred in Brebes sub district have been done by mangrove cultivation, hybrid engineering, and breakwater as well. Nevertheless, all those efforts did not work right away to solve the erosion problem and deteriorate its impact. This study has aim to determine the absolute sediment dating, which represents the study area. We decided the absolute sediment dating based on natural isotop activity 210Pb contained on sediment. Sedimentation rate calculation result was correlated with the river discharge and hydro-oceanography conditions in the sediment area systems. Based on unsupported 210Pb profile, at the station IST-01 (Pemali estuary) and IST-2 (Nipon estuary), the averages of sedimentation rate are 0.22 cm/year and 0.211 cm/year respectively. The discharge of Pemali River has ranged 14.4-48.1 m3/s. The current speed at the point IST-01 has ranged 0.001-0.1 m/s and at the station IST-02 has ranged 0.001-0.08 m/s. The hydro-oceanography condition which is volatile has a big impact on the process of sedimentation. The enhancing of river discharge has a correlation with the sedimentation rate enhancement in Pemali and Nippon estuary. The result of this study could be a basis of erosion mitigation effort in Brebes sub district.Keywords: Sedimentation, Brebes, Hydrodunamics of surface current, Isotop Unsupported 210Pb
PENDUGAAN LAJU SEDIMENTASI DI PERAIRAN TELUK BENOA - BALI BERDASARKAN CITRA SATELIT Tanto, Try Al; Putra, Aprizon; Kusumah, Gunardi; Farhan, A. Riza; S. Pranowo, Widodo; Husrin, Semeidi; ., Ilham
Jurnal Kelautan Nasional Vol 12, No 3 (2017): DESEMBER
Publisher : Pusat Riset Kelautan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15578/jkn.v12i3.4212

Abstract

Perairan Teluk Benoa Bali memiliki 6 sungai (tukad) yang bermuara pada perairannya. Tukad Mati dan Tukad Badung adalah 2 sungai terbesar pemberi pasokan sedimen. Pembangunan reklamasi di pelabuhan Benoa dan pembangunan Jalan Tol melintasi Teluk Benoa diduga meningkatkan sedimentasi. Tujuan penelitian ini adalah untuk mengetahui kejadian sedimentasi di perairan Teluk Benoa, dan memperoleh kisaran sedimentasi secara spasial yang terjadi dalam rentang 9 tahun terakhir. Analisis pendugaan sedimentasi dilakukan secara spasial berupa sebaran pengendapan sedimentasi di dasar perairan dengan menggunakan citra satelit Spot – 6 dan Landsat 7. Hasil yang diperoleh adalah luasan sedimentasi pada tahun 1997 sebesar 1640,78 ha mengalami penurunan luasan menjadi 1480,57 ha (tahun 2006) dengan laju perubahan sebesar positif -160,21 ha (-20,03 ha/tahun). Namun, luasan sedimentasi kembali bertambah menjadi 1531,93 ha pada tahun 2012 (laju perubahan negatif +8,56 ha/tahun), bahkan menjadi 1966,14 ha pada tahun 2015 (laju perubahan negatif +144,74 ha/tahun).
ASSESSING GROUNDWATER VULNERABILITY USING GALDIT METHOD (CASE STUDY: PADEMAWU SALT POND AREA, MADURA-INDONESIA) Gemilang, Wisnu Arya; Kusumah, Gunardi; Wisha, Ulung Jantama
Jurnal Kelautan Nasional Vol 12, No 3 (2017): DESEMBER
Publisher : Pusat Riset Kelautan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15578/jkn.v12i3.6358

Abstract

Groundwater quality pollution in the Pademawu coastal area is very alarming. The major problem is landuse overlapping between salt pond and settlement area which influences environment degradation enhancement. One of negative impacts is groundwater vulnerability in the salt pond area. The salt content enhancement affects some wells become saline around the settlement area which proves the environment degradation has occurred. This study has aim to determine the groundwater vulnerability level in Pademawu coastal area. We employed GALDIT method to assess the groundwater vulnerability level by which calculates the six GALDIT parameters such as groundwater occurrence aquifer type, hydraulic conductivity, level above mean sea level, distance from coast, impact of existing intrusion and aquifer thickness. We divided the groundwater vulnerability into 3 classes, which are high, moderate, and low vulnerability. The sensitivity analysis result shows that the distance between groundwater source and the coast (D) has reached 74 % which tremendously influences the groundwater vulnerability level. The high level of vulnerability is found in the area near the coast and salt pond which deteriorated towards north. The limitation of groundwater utilization and salt pond area in Pademawu coastal area is one of the precise ways declining the intrusion of sea water to the groundwater quality condition.
Kondisi Terumbu Karang di kawasan KALP Pantai Krakas, Lombok Utara Johan, Ofri; Kusumah, Gunardi; Wisha, Ulung J.
Jurnal Segara Vol 13, No 3 (2017): Desember
Publisher : Pusat Riset Kelautan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15578/segara.v13i3.6548

Abstract

Penelitian tentang Keluaran Air Tanah Lepas Pantai (KALP) masih sedikit dilakukan di Indonesia dan saat ini baru pertama kali melihat dampak terhadap ekosistem terumbu karang terutama terkait kondisi karang di lokasi tersebut. Penelitian ini bertujuan untuk mengamati dampak KALP terhadap kondisi terumbu karang dengan menggunakan metode transek garis sebanyak 3 ulangan dengan panjang 20 m. Transek sabuk berukuran lebar 2 m dan panjang 20 m dengan ulangan sebanyak 3 kali digunakan untuk melihat kelimpahan penyakit karang di lokasi sekitar 1,5 km dari sumber KALP. Hasil penelitian menunjukkan terdapat perbedaan kelompok kategori kondisi karang antara lokasi KALP yaitu lebih rendah dari 50% yang termasuk kondisi jelek (18,18% lokasi 1 dan 45,79% lokasi 2) dengan dominasi tutupan karang mati 30,85% dan patahan karang 10,53%. Pada lokasi 3 yang jauh dari KALP memiliki kondisi karang kategori baik karena memiliki tutupan karang hidup diatas 50% (51,37%). Keberadaan penyakit karang “Yellow Syndrome” dan Black Band Disease tidak ditemukan pada kedua lokasi KALP, namun ditemukan pada lokasi 3 yang jauh dari KALP dengan kelimpahan yang tinggi.