Petrus Subardjo
Jurusan Ilmu Kelautan, Program Studi Oceanografi, Fakultas Perikanan dan Ilmu Kelautan, Universitas Diponegoro

Published : 88 Documents
Articles

Kajian Perubahan Luas Laguna di Pantai Samas, Kabupaten Bantul dengan Menggunakan Citra Satelit Landsat Multi-temporal Saputra, Rifky; Subardjo, Petrus; ADS, Agus
Journal of Marine Research Vol 2, No 3 (2013) : Journal of Marine Research
Publisher : Journal of Marine Research

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Abstract

Samas beach lagoon is a unique and rare ecosystem, as well as being an area of tourism. One of the great river that empties into the Laguna Samas carry sediment material which will further lead to changes in the shape of land in the area. One impact of the change in shape in the area is the ever-expanding or narrowing of the land caused by the process of sedimentation. Sedimentation process is rapid and continuous this will damage the ecosystem Laguna Samas. To overcome this need to be monitoring the events that lead to environmental degradation. This activity is necessary to obtain accurate data and information and the actual on coastal and marine issues being faced today. The method used in this research is descriptive method, which is a study to create a picture of the situation or event that researched and studied in a limited time and place, to get an idea of the situation or conditions locally. In addition, this study also uses remote sensing techniques (visual interpretation using screen digitalizing techniques and field surveys). The material used in this study are Landsat images. Within 15 years, Laguna Samas and extensive changes shape significantly. Vast changes that have occurred in the lagoon research in the period between 1994 to 2001 had an area of 45.53 ha of erosion and accretion area of 13.58 ha. Changes vast lagoon in 2001 to 2005 was eroded area of 58.86 ha and 36.39 ha area accretion. And extensive changes in the lagoon in 2005 to 2011 had an area of 28.07 ha of erosion and accretion area of 58.38 ha. So, in 1994 until 2005, it had added vast lagoon waters, and in 2005 to 2011 extensive shrinkage or constriction waters. These results were obtained from the Landsat 5 satellite imagery overlay TM in 1994, Landsat 7 ETM 2001, Landsat 7 ETM 2005 and Landsat 7 ETM in 2011.
ANALISIS PERUBAHAN PENGGUNAAN LAHAN DI WILAYAH PESISIR KOTA PEKALONGAN MENGGUNAKAN DATA LANDSAT 7 ETM+ Shofiana, Rina; Subardjo, Petrus; Pratikto, Ibnu
Journal of Marine Research Vol 2, No 3 (2013) : Journal of Marine Research
Publisher : Journal of Marine Research

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Abstract

The research of land use change is very important for this time, because of changes in land use have an impact on the physical and social environment. The purpose of this research is to determine the extent and causes of land use change in Pekalongan coastal area from 1999 - 2012 using the data of Landsat 7 ETM+ satellite image. This research uses unsupervissed classification method by using the Er Mapper 7.0 software. Then to analyze the land use change using overlay land use maps of 1999, 2006, and 2012 use ArcGIS 9.3 software. The results showed that the land use change in the Pekalongan coastal from 1999 - 2012 shows pool is the largest additional land use changes the amount of ± 334.91 ha. This caused by rob in the research area. While vacant land is the largest land use which have a reduction in the amount of ± 792.86 ha. It is influenced by human factors such as population growth (number and distribution), the increase was also influenced by economic and physical factors such as topography, and soil type. Based on the results of the land use change research in the Pekalongan coastal from 1999 - 2012 there are some additional and reduction.
Daerah Rawan Genangan Rob di Wilayah Semarang Ramadhany, Apriliawan Setiya; Subardjo, Petrus; Suryo, Agus Anugroho Dwi
Journal of Marine Research Vol 1, No 2 (2012): Journal of Marine Research
Publisher : Journal of Marine Research

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Abstract

This study aims to determine the broad tidal inundation during the study and the level of vulnerability to tidal inundation that occurred in Semarang. Benefit of this study is to provide information about the areas that are prone to rob puddles and how much the extent area of rob that occur on the mainland of Semarang. There are five levels of vulnerability classes in Semarang area, starting from the very vulnerable class 625, 45 Ha, Ha 1418.92 prone, somewhat prone to 4807, 52 Ha, safe 1325, 57 Ha, very safe and 1157.54 ha with a total area of 9334.46 Ha. The spread of inundation rob Semarang region in 2011 is amounted to 1538.8 hectares. The North Region of Semarang is the most affected by tidal inundation, up to 508.28 hectares are affected. The second largest is at Genuk District with a total area of 377.68 hectares puddle. Extensive tidal inundation of 257.20 hectares located in the District Tugu furthermore, tidal inundation area of 237.19 hectares located in the District of West Semarang. The rest are spread in Semarang District Central, South and Gayamsari Semarang.
STUDI POTENSI PULAU PISANG BAGIAN UTARA UNTUK PERENCANAAN KAWASAN WISATA PANTAI, KABUPATEN LAMPUNG BARAT, PROVINSI LAMPUNG Sitompul, Putra Charisma Chryssa; Subardjo, Petrus; Pratikto, Ibnu
Journal of Marine Research Vol 2, No 3 (2013) : Journal of Marine Research
Publisher : Journal of Marine Research

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Abstract

Faithful Cape Coast is one of Lampung destinations featured attraction and a tourist attraction in West Lampung regency which has considerable potential as a marine tourism area. This study aims to identify and assess physical potential of Pisang Island as coastal tourism area. The research was conducted in July-August 2011, this is because the month is a transitional season, when the season started, many people were coming to Pisang Island. The method used in this study is descriptive exploratory method. The analysis used in this study is the analysis of the suitability of tourism, namely by comparing the characteristics and quality of land to the land use requirements for specific tourism activities. The results of the study showed that the physical condition of the waters of North Pisang Island potential as marine tourism area, with some activity that is Coastal walk, Sun Bathing, and fishing. Based on the IKW for Coastal Walk into the category of class S1 (highly suitable) with IKW value by 93%, whereas for Sun Bathing in the category S1 (highly suitable) with IKW value by 94% and for Fishing in category S2 (Quite suitable) with IKW value by 70%.
Studi Perubahan Luasan Vegetasi Mangrove Mengunakan Citra Landsat Tm Dan Landsat 7 Etm+ Tahun 1998 – 2010 Di Pesisir Kabupaten Mimika Papua Fajri, Fajri; Subardjo, Petrus; Pribadi, Rudhi
Journal of Marine Research Vol 1, No 1 (2012): Journal of Marine Research
Publisher : Journal of Marine Research

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Abstract

Mangrove ecosystem is one of kind forest that naturally influenced by tides. Mangrove root’s system have capability to hold and capture sediment transported by waves or currents which bring to sedimentation or soil formation arise and become the new land for mangrove vegetation. Tailings from the mining PT. Freeport Indonesia in Tembagapura cusher form of a smooth stone is passed through Aghawagon River, followed Otomona River and deposited in the Regional Deposition Ajkwa (DPA), the possibility of 5-10% of particles remaining Sand Mining (tailings) carried out the most subtle to the Estuary Ajkwa and the Arafura Sea (PT Freeport Indonesia, 1999). Sedimentation due to the flow of the remaining mine sand from the river and taken apart Ajkwa currents, thought to affect an area of mangrove forests that exist around the estuaries in the coastal Mimika. Aim of this study is determining the extent of vegetation change in Mimika coastal mangrove District, Papua during 1998 to 2010 using multitemporal satellite imagery. The study was conducted in November 2010 to May 2011 using 1998’s Landsat TM imagery, Landsat 7 ETM + in 2002, Landsat 7 ETM + in 2006, and Landsat 7 ETM+ 2010, by using descriptive method. The results of this study indicate changes in the extent of mangrove vegetation of the estuary area to Mawati Kamora is varied, ie, in the year 1998 to 2002 has improvement 250.64 ha and 234.91 ha of reduction, in the year 2002 to 2006 has improvement 131.82 ha and 193.37 ha of reduction, in the year 20006 to 2010 experienced a reduction of 175.94 ha and 89.28 ha. Supply of sediment input in the form of tailings or suspected influence on the addition of mangrove vegetation in the Mimika District coastal area of Papua, particularly in the area and Kamora Ajkwa River Estuary, while the reduction of mangrove vegetation in the Coastal area of Timika, Papua, probably caused from to hydrological factors of the currents and waves.
Studi Kesesuaian Perairan Pulau Pisang Bagian Timur Untuk Perencanaan Wisata Bahari Selancar Air, Olahraga Air Banana Boat dan Jet Ski, Kabupaten Lampung Barat, Provinsi Lampung Pradana, Andika Nugraha; Hariyadi, Hariyadi; Subardjo, Petrus
Journal of Marine Research Vol 2, No 3 (2013) : Journal of Marine Research
Publisher : Journal of Marine Research

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Abstract

Banana Island is one destination that superior Lampung attractions and is a tourist attraction in West Lampung regency which has considerable potential as one of the coastal resorts.This study aims to identify and assess physical potential of Cape Coast Faithful as marine tourism area.This study aims to identify and assess the potential physical Banana Island as a marine tourism area.This study was conducted in July-August 2011, this is because the month is a transition season, which allegedly started the season many tourists flock to Banana Island for a tour. The method used in this research is descriptive exploratory method.The analysis used in this study is an analysis of the suitability of travel, ie by comparing the characteristics and quality of the waters of the requirements for the use of waters of certain tourist activities. Results of the study showed that the physical conditions potentially Banana Island waters as marine tourism area, with several activities, namely water surfing (surfing), and water sports (Water Sports) ie banana boat and jet ski. Based on the value IKW for surfing activities (Surfing) in the category of S1-class (very appropriate) with IKW value by 86%, while for the water sports activities (Water Sport) ie banana boat and jet ski into the category of S1-class (very appropriate ) with IKW value of 81%.
Studi kesesuaian perairan pantai tanjung setia sebagai kawasan wisata bahari kabupaten lampung barat Provinsi lampung Aziz, Zulkifli; Subardjo, Petrus; Pratikto, Ibnu
Journal of Marine Research Vol 1, No 2 (2012): Journal of Marine Research
Publisher : Journal of Marine Research

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Abstract

Faithful Cape Coast is one of Lampung destinations featured attraction and a tourist attraction in West Lampung regency which has considerable potential as a marine tourism area. This study aims to identify and assess physical potential of Cape Coast Faithful as marine tourism area. This study aims to identify and assess physical potential of Cape Coast Faithful as marine tourism area. The results of the study showed that the physical condition of the waters of Cape Coast Faithful potential as marine tourism area, with some activity that is surfing (Surfing), diving (Diving), and fishing (Fishing). Based on the IKW for surfing activities (Surfing) into the category of class S1 (very suitable) with IKW value by 80%, whereas for diving (Diving) and fishing (Fishing) in the category S2 (quite appropriate) with each IKW value of 70% for diving (Diving), and 64% for fishing activities (fishing).
ANALISIS KESESUAIAN PERAIRAN UNTUK WISATA SNORKELING DAN DIVING DI PULAU PISANG BAGIAN UTARA KECAMATAN PESISIR UTARA LAMPUNG BARAT Lazuardi, Irfan; Subardjo, Petrus; Hariyadi, Hariyadi
Journal of Marine Research Vol 2, No 3 (2013) : Journal of Marine Research
Publisher : Journal of Marine Research

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Abstract

Pisang Island is one of the islands located in the Coastal West Lampung regency precisely in West Lampung. Expected with the development of Pisang Island as a tourist destination it will beable to increase revenue and the welfare of society in western Lampung. Utilization of coastal and marine resources in West Lampung could be the development of nautical tourism in the region in this regard Pisang Island. One form of nautical tourism is snorkeling and diving activities. However, in the tourist development efforts in Pisang Island have held identification and approach problems first. The most fundamental and the purpose of this studyis to conducta study on the suitability of water level in Pisang Island, especially for snorkeling and diving tourism activities. Research carried out by field observations (collecting primary data and secondary data) for 2 months in July 2011 to August 2011 in the northern part of the Pisang Island, which is divided into thirteen point sampling locations. Primary data collection consisted of coral cover data retrieval and type of life formusing LIT, count the number off is husing visual census of fish and measure the brightness levels use these cchidisk. The method used for the analysis of the research is descriptive method of analysis with the help of Travel Suitability Index which produces the suitability andvalue of the carrying capacity of tourist areas. Based on the results obtained from the calculation of travel suitability index for snorkeling and diving touris snorkeling tours there instations 1, 2, 3, and 5 are located at a depth of 3 meters. And for diving there instations 6, 7, 8, 9, 11, 12, 13 and 14 are located at a depth of 5 meter still 10 meters.
PEMETAAN TINGKAT KERAWANAN TSUNAMI DI PANTAI PARANGTRITIS DENGAN MENGGUNAKAN SISTEM INFORMASI GEOGRAFI Qoriadi, M. Taufan; Subardjo, Petrus; Helmi, Muhammad
Journal of Marine Research Vol 2, No 4 (2013) : Journal of Marine Research
Publisher : Journal of Marine Research

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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 SEBARAN SEDIMEN TERSUSPENSI SECARA HORIZONTAL DAN VERTIKAL DI PERAIRAN TUGU KECAMATAN TUGUREJO, SEMARANG Dwiyan, Kokoh; Subardjo, Petrus; Hariyadi, Hariyadi
Journal of Oceanography Vol 2, No 3 (2013)
Publisher : Journal of Oceanography

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Abstract

ABSTRAKMasalah hidrodinamika yang terdapat di Perairan Tugu adalah sebaran sedimentasi yang tidak merata yang mengakibatkan pembelokan di badan sungai dan perubahan alur pelayaran bagi kapal-kapal nelayan untuk memasuki daerah sungai khususnya pada saat perairan sedang surut. Tujuan dilakukannya penelitian ini adalah untuk mengetahui sebaran sedimen tersuspensi secara horizontal dan vertikal di Perairan Tugu.Penelitian ini dilakukan dalam 3 tahap, tahap pertama pengolahan citra satelit ALOS untuk mengetahui sebaran sedimen tersuspensi secara horizontal di Labolatorium Komputasi Jurusan Ilmu Kelautan Universitas Diponegoro, Semarang, pengambilan data yang dilaksanakan pada bulan Maret 2012 di Perairan Tugu dan tahap analisa laolatorium terhadap sampel air untuk mengetahui konsentrasi sedimen tersuspensi di Labolatorium Teknik Lingkungan Universitas Diponegoro, Semarang dan Penelitian ini menggunakan metode deskriptif. Data pengamatan pasang surut tinggi air di Perairan Tugu, Semarang hasil pengukuran Badan Meterologi Klimatologi dan Geofisika, Maritim.Pada saat pasang, nilai konsentrasi sedimen tersuspensi berkisar antara 8.13 mg/L untuk yang terendah dan 18.19 mg/L untuk yang tertinggi. Pada saat kondisi surut didapatkan nilai konsentrasi sedimen tersuspensi sebesar 18.17 mg/L sampai dengan 26.14 mg/L. Nilai konsentrasi sedimen terbesar pada saat pasang maupun surut didapatkan di dasar perairan, yakni sebesar 9.74 mg/L - 25.13 mg/L pada kondisi pasang dan 27.89 mg/L – 35.79 mg/L pada kondisi surut. 
Co-Authors Aditya Fajar Perdana, Aditya Fajar Aditya Gilang Saraswata Aeda, Sofia Alma Agung, Andita Agus A.D. Suryoputro Agus ADS Agus Anugroho D.S Agus Anugroho DS Agus Anugroho Dwi Suryo Agus Anugroho Dwi Suryoputro Agustiadi, Teguh Ahmad Nur Huda Ajie Rahmat Budiwicaksono Alfi Satriadi Ali Djunaedi Andhika Kurniawan Andika Nugraha Pradana Anindya Wirasatriya Apriliawan Setiya Ramadhany Aris Ismanto Baskoro Rochaddi Chiquita Tri Rezki Denny Nugroho Denny Nugroho Sugianto Diani, Karlina Putri Dwi, Agus Anugroho Erni Kusumastuti, Erni Fadhli, Ramdhani Fajri Fajri Farida, Fauzia Fitroh, Indah Syahiddah Franto Novico Gentur Handoyo Gersanandi Gersanandi Hanifah, Anne Hariadi Hariadi Hariadi, Ardian Hariyadi Hariyadi Haryadi haryadi Hebron Yustiabel, Hebron Heriyoso Setiyono Hermawan Saputra Heryoso Setiyono Ibnu Pratikto Ichwan Dwi Saputra Ilham Aulia Nur Fuady, Ilham Aulia Irfan Lazuardi Irwan Hidayatullah, Irwan Irwani Irwani Jasmine Khairani Zainal Kokoh Dwiyan Kunarso Kunarso Leon Rich Ginting Lilik Maslukah M. Furqon Aziz Ismail M. Taufan Qoriadi M., Bintang Yosua Cristian Melisa Dwi Syaputri, Melisa Dwi Muhammad Helmi Muhammad Sulaiman Muhammad Zainuri Munasik Munasik Muslim Muslim Nailis Sa’adah Nunut Parasian Siregar Nur Ismu Hidayat Pratikno, Ibnu Pratiwi Ramadhan Putra Charisma Chryssa Sitompul Putro, Agus A.D. Suryo Raden Ario Rahmat Hidayat Rifky Saputra Rina Shofiana Rizky Aditya Robin Sirait Rudhi Pribadi Ryan Nurdiansyah Sa?adah, Nailis Safwan, Mohammad Arif Setyiono, Heryoso Siddhi Saputra Siddhi Saputro Sigit Purnomo Siti Zulaykha Sondy Sunaryo Sri Yulina Wulandari Sugeng Widada Suryosaputro, Agus Anugroho Dwi Togi Persada Tarigan, Togi Persada Trenggono, Mukti Utami, Widya Sari Veri Yulianto Wahyu Aditya Nugraha Warsito Atmodjo Wibawa, Davis Pramayuda Willy Martahi Sihotang Zulkifli Aziz