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Journal : Journal of Marine Research

ANALISIS PERUBAHAN LUAS MANGROVE BERDASARKAN CITRA SATELIT IKONOS TAHUN 2004 DAN 2010 DI KECAMATAN MLONGGO, TAHUNAN DAN KEDUNG KABUPATEN JEPARA JAWA TENGAH Karyono, Afirman; Pribadi, Rudhi; Helmi, Muhammad
977-2407769
Publisher : Departemen Ilmu Kelautan, Fakultas PerikanJurusan Ilmu Kelautan, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (400.488 KB) | DOI: 10.14710/jmr.v2i3.3141

Abstract

Mangrove as one of coastal ecosystem has plenty of role on coastal stability, but the current condition even though of mangroves ecosystem is Java, including Jepara destructed by many reasons mostly human activities such as. Conversion of mangrove forests to ponds, settlements and illegal logging. Rehabilitation was conducted in some places. therefore, there is a need of review the changes. The purpose of this study to determine the mangrove area changes based on IKONOS satellite imagery of 2004 and 2010 in the District Mlonggo, Tahunan and Kedung, Jepara. Descriptive method is used to describe the state of research areas by comparing the field data and interpretation process. Satellite images have been digitized in overlay to know the changes at mangrove area. Ground check was conducted the field using the quadratic sampling plots of 10m x 10m to for tree, 5m x 5m for sapling and 1m x 1m for seedling. The results were increate that the between period of 2004 to 2010. However, the mangrove area increased 5,959 ha and reduced 5,294 ha and so there was in general 0.665 ha increased. The total area at mangrove in 2004 38,098 ha and in 2010 was variously 37,444. There were at least 20 species in the research area and Rhizophora sp was the most dominant species.
Kajian Kerentanan Tsunami Menggunakan Metode Sistem Informasi Geografi di Kabupaten Bantul, Daerah Istimewa Yogyakarta Mardiyanto, Bangun; Rochaddi, Baskoro; Helmi, Muhammad
977-2407769
Publisher : Departemen Ilmu Kelautan, Fakultas PerikanJurusan Ilmu Kelautan, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (789.331 KB) | DOI: 10.14710/jmr.v2i1.2071

Abstract

Indonesian archipelago directly opposite to the subduction zone between the Indo-Australian plate with the Eurasian plate. Based on plate movements, earthquakes are common in the Indian Ocean. As a result, the southern part of Java Island is very prone to earthquakes. If earthquakes occur beneath the sea and vertical fracture occurs, it will cause a tsunami. The purpose of this research is to create a map of vulnerability to tsunamis in the region peisir Bantul, Yogyakarta using Geographic Information Systems technology (GIS) and identify any areas that are highly vulnerable The research was conducted in March 2012 until August 2012. The method of analysis in this research is qualitative and quantitative. The methodology used in this study include data gathering both primary and secondary data include satellite imagery, DEM, scale 1:25,000 Topographic maps, demographic data, seismic positioning data, bathymetry data, and earthquake data fault. Processing parameters data that represent each variable vulnerability, ie environmental vulnerability, physical, social and economic was weight and then given a vulnerability score of each variable, vulnerability areas data processing to tsunami to get the vulnerability of the region to the tsunami map and field surveys. Villages in coastal areas that have a high level of tsunami vulnerability is Poncosari Village, Gadingsari Village, Gadingharjo Village, Srigading Village, Tirtoharo Village, Donotirto Village and Parangtritis village. Land use in Bantul related to human activities that weredamage threatened by the tsunami are residential, gardens, fields, ponds, moor and forest.
Kajian Kerentanan Pantai Di Pesisir Kabupaten Rembang Provinsi Jawa Tengah Arini, Dwi Puspa; Indarjo, Agus; Helmi, Muhammad
977-2407769
Publisher : Departemen Ilmu Kelautan, Fakultas PerikanJurusan Ilmu Kelautan, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (255.556 KB) | DOI: 10.14710/jmr.v3i4.8368

Abstract

Kabupaten Rembang merupakan wilayah yang secara langsung menerima dampak dari aktivitas erosi akibat arus dan gelombang. Erosi memiliki sifat merusak yang dapat  menganggu keseimbangan ekosistem dan dapat merusak infrastruktur yang telah dibangun pada daerah tersebut dan daerah sekitarnya. Tujuan dari kajian ini adalah untuk mengetahui pengaruh mangrove terhadap tingkat kerentanan pantai dan untuk memetakan Indeks Kerentanan Pantai berdasarkan pada lima variabel yang digunakan yaitu: tipologi pantai, geomorfologi pantai, vegetasi mangrove, kemiringan pantai dan penggunaan  lahan pesisir. Terdapat empat kelas kerentanan pantai di Kabupaten Rembang yaitu rendah, sedang, tinggi dan sangat tinggi. Pengaruh Mangrove untuk Kecamatan Kaliori tidak terlalu tampak, sedangkan di Kecamatan Rembang terjadi perubahan nilai kerentanan pantai dari tingkat kerentanan rendah menjadi tingkat kerentanan sedang.
PEMETAAN TINGKAT KERAWANAN TSUNAMI DI PANTAI PARANGTRITIS DENGAN MENGGUNAKAN SISTEM INFORMASI GEOGRAFI Qoriadi, M. Taufan; Subardjo, Petrus; Helmi, Muhammad
977-2407769
Publisher : Departemen Ilmu Kelautan, Fakultas PerikanJurusan Ilmu Kelautan, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (104.322 KB) | DOI: 10.14710/jmr.v2i4.3687

Abstract

Tsunami is one of the natural events that can not be predicted. The causal of tsunami can be submarine earthquake, submarine volcanic eruptions, or submarine landslide. The mapping of tsunami vulnerability in Parangtritis Beach is an effort of disaster mitigation to minimize the negative impact of tsunami. The research is aimed to map the vulnerability of tsunami disaster in the area of Parangtritis Beach. There are five classes of vulnerability level i.e. very vulnerable class, vulnerable class, slightly vulnerable class, safe class, andvery safe class. The places in Kretek Sub-district which are rated vulnerable (very vulnerable, vulnerable, and slighty vulnerable) is covering the area of 1.334,22 hm2 or 52,93 % of Kretek Sub-district. The places in Kretek Subdistrict which are rated safe is covering the area of 1.186,27 hm2 or 47,06% of Kretek Subdistrict.
STUDI KESESUAIAN DAN DAYA DUKUNG KAWASAN UNTUK REKREASI PANTAI DI PANTAI PANJANG KOTA BENGKULU Nugraha, Himavan Prathista; Indarjo, Agus; Helmi, Muhammad
977-2407769
Publisher : Departemen Ilmu Kelautan, Fakultas PerikanJurusan Ilmu Kelautan, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (246.02 KB) | DOI: 10.14710/jmr.v2i2.2474

Abstract

resort in the Panjang Beach area. One form of the beach tourism is the beach recreation activities. However, in its efforts to the development of tourism in Panjang Beach needed to be identified and approaches the problems first. The most fundamental and the goal of this research is to conduct a study on the level of suitability and carrying capacity of the Panjang Beach coast primarily for recreational activities. Research carried out by field observations (collecting primary data and secondary data) for 2 months in July 2012 until August 2012 at the Panjang Beach city of Bengkulu, which is divided into seven-point sampling locations from the south up to the north shore. Collecting primary data consist of physics and chemistry sea water data and suitability parameters of beach recreation, such as type of beach, width of the beach, slope of the beach, brightness of sea water, current velocity, water depth, water base material, beach land cover, presence of harmful organism and availability of fresh water. The method used to analyze the results of the research is descriptive method with the help of Tourism Suitability Index analysis and the carrying capacity of Regions that generate value and suitability of the tourist carrying capacity. Based on the results obtained from the calculation of tourism suitability index for coastal recreation activities are mostly above 80%. This indicates that the coastal areas of Bengkulu City, Panjang Beach classified in the category of Highly Suitable (S1) for coastal recreation activities. While the value Capability Area of the Panjang Beach approximately 42.045 people per day.
Analisa Sel Sedimen Sebagai Pendekatan Studi Erosi Di Teluk Lampung, Kota Bandar Lampung Provinsi Lampung Dianpurnama, Dianpurnama; Helmi, Muhammad; Yusuf, Muhammad
977-2407769
Publisher : Departemen Ilmu Kelautan, Fakultas PerikanJurusan Ilmu Kelautan, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (286.736 KB) | DOI: 10.14710/jmr.v2i1.2067

Abstract

Shoreline deformation is a result from sediment transport process with an intervention of current. Concept of sediment cell used to facilitate the analysis and it can be seen on satellite images Landsat. The purpose of this research is to identify sediment cell limit and dominant direction of sediment transport along shore, erosion and sedimentation analysis using sediment cell approachment based satellite images analysis and wave modeling. This research used remote sensing method to determine sediment cell limit and ground check method to identify the source, direction and limits of sediments movement. The landmass that got erosion and accretion was obtained from satellite images overlay. Satellite images which used in this research is Landsat 1990, 2000 and 2010. According to the result of overlay, seashore deformation for 20 years was dominated by accretion (167,71 ha wider than erosion). The result of overlay showed that average accretion rate was 8,3855 ha/year and average erosion rate was 1,1745 ha/year. Results of overlay processing based on erosion and accretion showed that seashore in Bandar Lampung divided into 6 sub sediment cell with 5 limit of static sub cell and 1 dynamic sub cell appropriate for cell sediment concept.
Pemetaan Area Genangan Banjir Pasang Di Kawasan Lahan Budidaya Air Payau Kota Pekalongan Provinsi Jawa Tengah Drestanto, Adhyaksa Saktika; Indarjo, Agus; Helmi, Muhammad
977-2407769
Publisher : Departemen Ilmu Kelautan, Fakultas PerikanJurusan Ilmu Kelautan, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (431.38 KB) | DOI: 10.14710/jmr.v3i4.8365

Abstract

Kota Pekalongan memiliki Tempat Pelelangan Ikan (TPI) terbesar di Jawa Tengah, namun terjadi penurunan terhadap produksi dan produktivitas yang signifikan. Alternatif yang dapat dilakukan untuk menekan penurunan produksi dan produktivitas maka dapat dilakukan budidaya ikan air payau di wilayah pesisir. Pembuatan lahan budidaya air payau banyak mengalami masalah, utamanya adalah banjir pasang air laut. Berdasarkan pada hal tersebut, maka perlu dilakukan pemetaan daerah terkena dampak area genangan  banjir pasang dan mengkaji lahan budidaya air payau yang terkena dampak area genangan banjir pasang.Penelitian ini dilakukan untuk memetakan lahan budidaya air payau yang terkena dampak area genangan banjir pasang. Metode penelitian yang digunakan dalam penelitian ini antara lain metode rektifikasi, komposit warna, purposive sampling, admiralty, sistem informasi geografi dan regresi linear sederhana. Lima kelurahan yang memiliki lahan budidaya air payau yang terkena dampak area genangan banjir pasang. Kelurahan Bandengan 108,66 ha, Kandang Panjang 59,62 ha, Panjang Baru 27,43 ha, Krapyak Lor 115,55 ha dan Degayu 38,91 ha. Hanya lahan budidaya air payau pada Kelurahan Degayu saja yang tidak terkena dampak area genangan banjir pasang seluruhnya.
Pemetaan Kerusakan Terumbu Karang Akibat Kandasnya Kapal Tongkang di Taman Nasional Karimunjawa, Jawa Tengah Munasik, Munasik; Helmi, Muhammad; Siringoringo, Rikoh Manogar; Suharsono, Suharsono
977-2407769
Publisher : Departemen Ilmu Kelautan, Fakultas PerikanJurusan Ilmu Kelautan, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1281.398 KB) | DOI: 10.14710/jmr.v9i3.28239

Abstract

ABSTRAK: Pemetaan kerusakan terumbu karang akibat kandasnya kapal tongkang di P. Tengah dan di P. Cilik, Taman Nasional Karimunjawa, Jawa Tengah telah dilakukan 2-3 bulan setelah kejadian dengan cara mengukur luas area kerusakan dan menilai kondisi terumbu karang. Pengukuran area kerusakan menggunakan metode penginderaan jarak jauh berbasis Drone (UAV Drone/pesawat tanpa awak) dan penilaian kondisi ekosistem terumbu karang dengan menggunakan metode Underwater Photo Transect (UPT). Tujuan penelitian ini adalah untuk mengetahui kondisi dan kerusakan terumbu karang akibat kandasnya kapal tongkang di P. Cilik dan P. Tengah, Taman Nasional Karimunjawa. Hasil menunjukkan telah terjadi kerusakan fisik di lereng atas terumbu karang pada kedua pulau tersebut berupa karang mati dan pecahan karang. Luas kerusakan terumbu karang di P. Tengah (1.420,32 m2) lima kali lebih luas daripada luas kerusakan terumbu karang di P. Cilik (267,22 m2). Luasnya kerusakan terumbu karang di P. Tengah kemungkinan akibat perbedaan jumlah kapal tongkang yang kandas, waktu kandas dan dominasi karang yang mudah patah (fragile). Komunitas karang keras yang dominan di lereng terumbu P. Tengah adalah karang bercabang (CB), Acropora bercabang (ACB) dan karang lembaran/foliose (CF). Luasan kerusakan dan kondisi terumbu karang akibat kandasnya kapal tongkang ini dapat digunakan untuk pengelola kawasan konservasi dalam perencanaan perlindungan dan restorasi ekosistem terumbu karang di Taman Nasional Karimunjawa  ABSTRACT: Mapping damage to coral reefs due to the barges grounding in Cilik Island (P. Cilik) and Tengah Island (P. Tengah), Karimunjawa National Park, Central Java was carried out 2-3 months after the event by measuring the extent of damage and coral reefs assessment. Damage area measurement using Drone (UAV Drone) based remote sensing and reef ecosystem assessment using the Underwater Photo Transect (UPT) method. The aim of this study was to determine the condition and damage of coral reefs due to the wrecking of barges in Cilik and Central P., Karimunjawa National Park The results show that physical damage has occurred on the upper slopes of coral reefs on both islands is dead coral and coral fragments. Damage to extensive coral reefs in P. Tengah (1,420.32 m2) is five times larger than extensive damage to coral reefs in P. Cilik (267.22 m2). Damage to coral reefs in P. Tengah may cause differences in the number of barges that ran aground, time of aground and the dominance of fragile corals the upper slopes of the coral reefs. The dominant hard coral communities on the upper slopes of P. Tengah reefs are generally composed the fragile corals, such as branching corals (CB), branching Acropora (ACB) and foliose corals (CF). Damage to coral reefs and the condition of the ecosystem caused by the aground of the barges can be used to manage conservation areas in the planning of conservation and restoration of coral reef ecosystems in the Karimunjawa National Park in near future.
Pemetaan Perairan Dangkal Pulau Genting, Kepulauan Karimunjawa Choiriah, Nabila Fitri; Ismunarti, Dwi Haryo; Helmi, Muhammad
Journal of Marine Research Vol 12, No 4 (2023): Journal of Marine Research
Publisher : Departemen Ilmu Kelautan, Fakultas PerikanJurusan Ilmu Kelautan, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jmr.v12i4.41652

Abstract

Pulau Genting adalah salah satu pulau berpenghuni yang terletak di Kepulauan Karimunjawa bagian timur. Kegiatan pelayaran merupakan kegiatan utama bagi para penduduk Pulau Genting, baik untuk transportasi, jasa angkut, atau sebagai mata pencaharian masyarakat Pulau Genting. Pemetaan kedalaman perairan, terutama pada perairan dangkal perlu dilakukan untuk mendukung urgensi kegiatan pelayaran tersebut. Penelitian ini bertujuan untuk menganalisis dan memetakan perairan dangkal Pulau Genting untuk mendukung alur kegiatan pelayaran. Data yang digunakan adalah data pemeruman lapangan tanggal 26-28 Juni 2022, dan data pasang surut dengan periode 12 Juni–10 Juli 2022. Metode pengambilan data kedalaman lapangan dilakukan dengan alat fishfinder. Sedangkan pengolahan data pasang surut dilakukan dengan metode Admiralty, dan pengolahan data kedalaman lapangan menggunakan koreksi reduksi pasang surut (rt). Nilai kedalaman perairan dangkal Pulau Genting berkisar antara 0 hingga -20 meter, dengan nilai Z0=0,54 meter, HHWL=2,27 meter, MSL=1,77 meter dan LLWL 1,23 meter. Perairan dangkal Pulau Genting sebelah barat memiliki topografi yang lebih landai dibandingkan dengan perairan di sebelah timur. Topografi pantai sebelah timur Pulau Genting, yang cenderung lebih dalam, memungkinkan kapal perikanan kecil dapat bersandar tanpa khawatir kemungkinan kandas. In the eastern Karimunjawa Islands, Genting Island was one of the populated islands. The primary activity for Genting Island residents was shipping, whether it is for personal transit, moving goods, or as a means of support. To support the urgency of these maritime activities, water depth mapping was required, particularly in shallow waters. In order to facilitate maritime activity, this project examine and map Genting Island's shallow water. The data used includes tidal data for the period June 12-July 10, 2022, and field survey data for the period June 26–28, 2022. A fishfinder instrument was used to conduct the method of acquiring field depth data. While implementing the Admiralty method for tidal data processing and tidal reduction correction for field depth data processing. Genting Island's shallow water are between 0 and -20 meters deep, with Z0=0,54 meter, HHWL=2,27 meter, MSL=1,77 meter dan LLWL 1,23 meter respectively. The topography of Genting Island's shallow water to the west was softer than those to the east. Small fishing boats can dock on Genting Island's east coast without being concerned about the potential of running aground due to the terrain, which was often steep.
Co-Authors Adhyaksa Saktika Drestanto Afirman Karyono Agung Prasongko, Wahyu Agus Indarjo Agus Kurniawan Ainur Rofiq Sofa Akbari, M. Denny Akhiroh, Puji Akhmad Hanan Alfi Satriadi Ali Rahman Hakim Amaliana Yuniarti Amin, Moh Hasan Shodiqil Amin, Moh. Hasan Shodiqil Aminuyati Anam, M. Khairul Anang Joko Sadono Anindya Wirasatriya Ardilla, Yohana Nanita Nansy Ariputro, Aryobimo Bharadian Aris Ismanto AS, Harun Asyari, Mufidah Asyisyifa, Asyisyifa Atik Winarti Aulia, Zahra Safira Ayudila A. P., Prasasty Azhari Akmal Tarigan Azra, Mhd Rayhan Badaruddin Badaruddin Basir, Basir Baskoro Rochaddi Benny Tyson Siagian Berlianto, Anggit Novian Bobi Kurniawan, Bobi Budhi Santoso Budi Hartono Cahya, Ardhian Indra Cathaputra, Edo Choiriah, Nabila Fitri Dedi Supriadi Denny Nugroho Sugianto Desrina Desrina Dhaneswara, Donanta Dianpurnama Dianpurnama Dwi Haryo Ismunarti Dwi Puspa Arini Edwin Maulani Edy Haryanto Eka Kusumastuti, Anie Eko Nugroho Fahendi Roher Fauzi Hanif Febriani, Diana Nur Febrianto, Nanang Ferry Hermawan Fikri, Hidayatulla Firdausiyah, Jannatul Fitriyanto, Bobby Rachmat Fitriyanto, Bobby Rachmat Fonny Rianawati Gaol, Hadimas Lumban Gentur Handoyo Ghozali, Kanaya Gusti Muhammad Hatta H Hadiyanto Habibah, Wulidatul Hadi, Wirawan Noor Hamdi Anugrah, Hamdi Hanah Khoirunnisa Hanum Muarifah Hanun, Alain Shofia Harahap, Fasthabiqul Ambiya Hardiyanto Hardiyanto Hardjana, Fahira Mutiara Hariadi Hariadi Hasan, Miftahul Hatmaja, Rahaden Bagas Hayati, Sri Ayatina Herlina Ika Ratnawati, Herlina Ika Heryoso Setiyono Hidayat, Amat Hidayatullah, Muhammad Fatih Himavan Prathista Nugraha Hirawaty Kamarulzaman, Nitty Ivan Febriansyah Izzaturrahim, Muh. Hafizh Jafron Wasiq Hidayat Jamal Jamal Jamhari Jamhari Jannah, Nurul Jarkawi Jarkawi, Jarkawi Jayawarsa, A.A. Ketut Kartika Hariyanto, Hani Khairun Nisa Kunarso Kunarso Laila Hayati, Laila Latifah, Laila Lelalette, Johanis Dominggus Lestari Lakhsmi Widowati Lilik Maslukah Luh Putu Ratna Sundari M. Fachrurrozi M. Furqon Azis Ismail M. Taufan Qoriadi Mahinsha, Amryl Naufal Ilham Mario Putra Suhana Masyithoh, Dewi Meirantika, R. Meirantika, Ruping Melissa Bonauli, Melissa Muarifah, Hanum Muh Yusuf Muh. Yusuf Muhammad Faisal Mahdie Muhammad Husni Muhammad Rifai Muhammad Yusuf Muhana, Muriyani Munasik Munasik Musdalipah, Febby Muttaqien, Moh Hasan Firghol Nadia Ramli, Nurul Naparin, Muhammad Nasir Shamsudin , Mad Nerinawati, Umi Noor Mirad Sari Novinta, Winda Meily Nugroho Agus D Nurhasanah Nurhasanah Nurhikmah Nurhikmah Nurul Hadi, Nurul Nurul Huda, Asri Nurwahyuni, Eka Octavianna, Pramesthi Dwi Pangastuti, Prima Riliayunda Petrus Subardjo Prafitri , Rizky Pratama, Dhika Rino Priyo Sugeng Winarto Puspita Anugra Yekti , Aulia Puspita Anugra Yekti, Aulia Puspita, Dian Endah Putri Utami, Putri Putri, Eka Salma Afifah Putri, Mayada Qorihah Ismayati Rahayu Ningsih Ramadhani, Khoirul Ramadhina Irsanti Putri, Ardyah Rendhy Dimas R, Rendhy Dimas Rezti, Rezti Ria Azizah Tri Nuraini Rikoh Manogar Siringoringo Rina Kurniati Rina Muhayah Noor Pitri, Rina Muhayah Noor Rinakanti, Rinakanti Rinda Nita Ratnasari, Rinda Nita Rini Dwi Wahyuni Rizki Prafitri Rizkiyah, Sinta Asri Rodi Rodi, Rodi Rudhi Pribadi Ryan Nurdiansyah Ryanto, Fauzan Novan Saipiatuddin, Saipiatuddin Sanova, Aulia Seto Sandi Saputri, Elsi Sari Mayawati Seprianti, Restu Setiawan, Abim Setiyadi, Johar Siddhi Saputro Sinaga, Boby Christian Siswono, Eko Sitinjak, Dedy Febrianto Sohri Ramadhan Alfikri Sri Wilarso Budi Subekti Mujiasih Sugeng Widada Suharsono Suharsono Suharyanto, Oasiska Nuhannaning Sulaiman Sulaiman SYARIFUDDIN KADIR Tadzkirah, Laila Tagore, Rafa Fahrezi Ulfah Nurjanah, Ulfah Ulfani, Afifa Ulyana, Dyah Nurul Umami, Novita Utami, Hana Putri Violet Warsito Atmodjo Widianingsih Widianingsih Widodo S Pranowo Winarti, Atik Winarto , Priyo Sugeng Winarto, Priyo Yulicia , Zamrudhinda Minna Yusuf Jati Wijaya Zaini, Fina Magfirah Zakiyullah, Azkalakum Zulyani, Zulyani