Sea Wave Energy Electricity Source

Placement Estimation of Sea Wave Energy Electricity

Source at Karst Shores Region in Gunungkidul Regency, Yogyakarta

Firdausy,AndikaPutri¹; Sawungrana, Azzadiva Ravi¹; Rahmawati, Ima¹; Pujiastuti,Isna²; Khikmah, Fithrothul¹

¹Department of Geography Information Science and Regional Development,

² Department of Environmental Geography
Faculty of Geography, Gadjah Mada University 

Abstract- Ratio of fossil energy use and clean energy use in Indonesia is 65.5:8.5 with 187.32 million cubic ton carbon emission on 2010. Indonesia is an archipelago country that has great wave energy potential to produce electricity. Sea wave is an eco-energy that can produce about 20-70 kWh/m. South Java shores has great potential as sea wave energy location especially at Gunungkidul district that its region characteristics formed by karst/limestone. This research has a purpose to determine the area suitability for onshore sea wave energy power station through GIS, spatial land analysis, and weighting method. Area suitability level is grouped to suitable (S1), suitable conditional (S2), and not suitable (N). Weighting method uses this following parameter: shore morphology, sea depth, shore tilt, wave type, wind velocity, and wind direction as early appraisal for area suitability identification to place onshore sea wave power station in Gunungkidul Regency.

Keywords- Clean energy, wave energy, GIS, eco-energy, Gunungkidul

Sea Wave Energy Electricity Source

Placement Estimation of Sea Wave Energy Electricity Source at Karst Shores Region in Gunungkidul Regency, Yogyakarta

Firdausy, AndikaPutri¹; Sawungrana, Azzadiva Ravi¹; Rahmawati, Ima¹; Pujiastuti,Isna²; Khikmah, Fithrothul¹

¹ GadjahMada University , Faculty of Geography, Department of Geography Information Science and Regional Development,

² GadjahMada University , Faculty of Geography, Department of Environmental Geography

Abstract- Ratio of fossil energy use and clean energy use in Indonesia is 65.5:8.5 with 187.32 million cubic ton carbon emission on 2010. Indonesia is an archipelago country that has great wave energy potential to produce electricity. Sea wave is an eco-energy that can produce about 20-70 kWh/m. South Java shores has great potential as sea wave energy location especially at Gunungkidul district that its region characteristics formed by karst/limestone. This research has a purpose to determine the area suitability for onshore sea wave energy power station through GIS, spatial land analysis, and weighting method. Area suitability level is grouped to suitable (S1), suitable conditional (S2), and not suitable (N). Weighting method uses this following parameter: shore morphology, sea depth, shore tilt, wave type, wind velocity, and wind direction as early appraisal for area suitability identification to place onshore sea wave power station in Gunungkidul Regency.

Keywords- Clean energy, wave energy, GIS, eco-energy, Gunungkidul

Evacuation Track

Nuke Map 3D Application and GIS Technology Intergration to Decide Evacuation Track Nuclear Bomb in City Region

(Case Study of Surabaya, East Java)

<Ima RAHMAWATI; Cartography and Remote Sensing, UGM; Indonesia
Andika Putri FIRDAUSY; Cartography and Remote Sensing, UGM; Indonesia
Azzadiva Ravi SAWUNGRANA; Cartography and Remote Sensing, UGM; Indonesia>

ABSTRACT

This world is really close to nuclear warfare. This is expressed by Komitet Gosudarstvennoy Bezopasnosti (KGB) agents that investigate the Soviet leaders believe if America does great prepare to face Soviet (The Atlantic, 2013). Nuclear warfare has a very strong impact to the environment because it will produce 150 million tons of smoke (Nuclear Darkness). From health and social side, the radiation will take great effect as what happened at Chernobyl. Because of that Indonesia has to prepare to face every possibility. Surabaya is one of province capital in Indonesia with high productivity that makes it as one of nuclear attack target. Method used is the integration of Geographical Information System, Nuke Map 3D application, and literature review. GIS method used is thematic map overlay for visualize distribution of victim that is caused by nuclear bomb and evacuation plan. Nuke Map 3D is application for predict damage and area of victim that receive impact of nuclear bomb. Literature review about impact of nuclear bomb from various research results to give description of every possibility that can happen. This is done for damage impact prediction that is caused by nuclear bomb, especially number of victim. This study is important for countermeasures after disaster with decide the effective evacuation track. Data are needed to procced are damage impact and victim data caused by nuclear bomb from Nuke Map 3D application, population data from government website of Surabaya, and basic map for visualize thematic map. The result of this study is nuclear bomb disaster countermeasures modeling that are in the form of evacuation track mapping and safest destination location for ease evacuation process.

Keyword: Nukemap 3D, GIS Technology, Nuclear Bomb, Evacuation Track

Konservasi Energi

Estimasi Penempatan Sumber Energi Listrik Tenaga Gelombang Laut di Kawasan Pantai Karst Kabupaten Gunungkidul, Daerah Istimewa Yogyakarta

Ima Rahmawati¹, Andika Putri Firdausy², Azzadiva Ravi Sawungrana³

^1,2,3 Universitas Gadjah Mada

Abstrak: Energi fosil merupakan sumber energi utama di Indonesia, tetapi energi ini justru membawa dampak buruk berupa peningkatan konsentrasi CO₂ di atmosfer yang mempercepat laju perubahan iklim dunia. Menurut data WDI dan GDF tahun 2013 perbandingan penggunaan energi fosil dan energi bersih di Indonesia sebesar 65,5:8,5 dengan emisi karbon 389,43 juta kubik ton pada 2010. Indonesia yang terkenal dengan Negara kepulauan, dimana laut Indonesia memiliki berbagai potensi salah satunya potensi gelombang laut yang dapat menghasilkan energi listrik. Gelombang laut yang tergolong eco-energy diperkirakan dapat menghasilkan energi sekitar 20-70 kWh/meter, dengan garis pantai sekitar 81.290 km (Peneliti Puslitbang PLN, 2011). Pantai Selatan Jawa merupakan salah satu kawasan potensial sebagai lokasi penempatan sumber energi yang memanfaatkan gelombang laut, terutama di Kabupaten Gunungkidul yang karakteristik wilayah didominasi oleh batuan gamping/karst. Pasalnya lokasi ini memiliki kemiringan dasar laut yang cukup curam sehingga besar kemungkinan untuk menghasilkan gelombang laut yang sesuai. Penelitian ini bertujuan menentukan kesesuaian kawasan untuk penempatan sumber energi listrik dari tenaga gelombang laut (PLTGL Onshore) menggunakan SIG dan Citra Landsat ETM+ komposit 457. Citra Satelit Landsat ETM+ komposit 457 dengan resolusi spasial 30 meter digunakan untuk mengetahui morfologi pantai. Peta Geologi digunakan untuk mengetahui formasi batuan penyusunnya. Peta RBI digunakan untuk mengetahui data lereng pantai yang digunakan dalam mengidentifikasi tipe gelombang. Interpolasi data angin di setiap titik pengukuran memberikan informasi tentang kecepatan angin dan arah angin. Metode yang digunakan dalam penelitian ini adalah analisis kesesuaian lahan secara spasial dan metode pembobotan. Tingkat kesesuaian lahan terbagai menjadi sesuai (S1), sesuai bersyarat (S2), dan tidak sesuai (N). Metode pembobotan menggunakan parameter morfologi pantai, kedalaman air laut, kemiringan pantai, tipe gelombang, kecepatan angin dan arah angin sebagai penilaian awal dan dasar dalam mengidentifikasi kesesuaian lahan untuk penempatan PLTGL Onshore di Kabupaten Gunungkidul.

Kata Kunci : Gelombang Laut, Eco-energy, PLTGL Onshore

Konservasi Lingkungan

Penentuan Zona Mangrove Sebagai Area Biofilter Alami dalam Upaya Mereduksi Pencemaran Lingkungan di Pantai Utara Semarang

Azzadiva Ravi Sawungrana¹, Andika Putri Firdausy², Ima Rahmawati³

^1,2,3 Universitas Gadjah Mada

Abstrak: Kawasan mangrove merupakan salah satu kawasan yang memiliki peran penting dalam menjaga keseimbangan ekosistem pesisir. Semarang bagian utara tergolong sebagai daerah dengan tingkat kerusakan pantai cukup tinggi. Terbukti dengan kerusakan hutan mangrove yang ada di Kota Semarang mencapai 11 Ha dari total 36,51 Ha (KeSEMaT UNDIP). Keberadaan zona mangrove di pantai utara Semarang yang seharusnya dapat menjadi area biofilter alami sudah semakin langka, ditambah lagi dengan adanya kegiatan reklamasi pantai yang digunakan sebagai sarana kegiatan industri dan pelabuhan membawa dampak buruk bagi lingkungan, yakni meningkatnya pencemaran lingkungan. Salah satu upaya dalam mengoptimalisasi zona mangrove sebagai area biofilter adalah menjadikan kawasan mangrove sebagai sabuk hijau di sepanjang pantai. Untuk mewujudkan sabuk hijau di sepanjang pantai tergolong tidak mudah sebab kemampuan adaptasi setiap jenis mangrove terhadap lingkungan berbeda, sehingga diperlukan analisis kesesuaian lahan dalam menentukan komposisi vegetasi yang ada di setiap zona. Pembagian kawasan mangrove berdasarkan jenis vegetasi terdiri dari zona ecotone yang diperuntukan sebagai zona pemanfaatan dan zona mangrove yang diperuntukkan sebagai zona konservasi. Zonasi Ectone terdiri dari vegetasi kelapa nimbung dan nyipa yang keberadaannya dapat dimanfaatkan untuk memenuhi kebutuhan hidup masyarakat. Zona Mangrove terdiri dari vegetasi Bruguiera, Rhizophora dan Avicenia yang keberadaannya dimanfaatkan sebagai area biofilter alami. Metode yang digunakan dalam penelitian kali ini adalah analisis kesesuaian lahan dalam menentukan komposisi vegetasi terbagi menjadi sesuai (S1), sesuai bersyarat (S2), dan tidak sesuai (N) terhadap vegetasi yang ada di tiap zona. Parameter yang digunakan diantaranya kondisi tanah, kadar garam, lamanya penggenangan dan arus pasang surut kesesuaian lahan terhadap vegetasi yang ada di tiap zona.

Kata Kunci : Mangrove, Pencemaran Lingkungan, Biofilter Alami

Eco-energy

Onshore Sea Wave Power Station: Site Selection in Gunungkidul, Yogyakarta through Remote Sensing and GIS Analysis

¹ Andika Putri Firdausy, ² Azzadiva Ravi Sawungrana,³ Ima Rahmawati

¹ Faculty of Geography, Gadjah Mada University

²Faculty of Geography, Gadjah Mada University

³Faculty of Geography, Gadjah Mada University

Abstract. 65.5:8.5 is the consumption ratio of fossil energy and clean energy in Indonesia with 389.43 million metric tons carbon emission in 2010 (WDI & GDF 2013). It is an irony because Indonesia is one of the lungs of the world and Indonesia has so many alternative energies such as sea wave energy that has zero emission. Indonesia needs to develop this kind of energy because Indonesia has great length of shore and the one of the greatest shore for sea wave energy is Gunungkidul’s shore. That potential place needs to be developed by quick and right technique to know suitability of on shore sea wave energy power station placement. Remote sensing technique that integrated with Geographic Information System is an effective way to get information of sea wave energy placement suitability. Landsat Satellite image 30 m spatial resolution used to find out shore morphology. Bathymetric map can give sea water depth and shore tilt information by interpolate every height point. Shore slope data is used to identify the wave type of the shore. Wind data interpolation in every measure point gives information about wind speed and wind direction. Matching method is used against parameter of shore morphology, sea water depth, shore slope, wave type, wind speed, and wind direction as the early rating and basic of land suitability identification for onshore sea wave power station site selection. Land suitability level is divided to very suitable (S1), quite suitable (S2), marginal suitable (S3), and not suitable (N). Based from identification result with matching method could be known suitability level of onshore sea wave power station placement so that can produce optimal energy.

Keywords: Eco-energy, Sea wave power station, Matching, Site Selection