Hanansyah, Megivareza Putri (2023) Variabilitas Sebaran Kandungan Klorofil-a di Laut Indonesia Timur Tahun 2016-2021 Menggunakan Sentinel-3 OLCI. Other thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Wilayah laut Indonesia terletak di antara Samudra Pasifik dan Hindia. Massa air dari Samudra Pasifik barat mengalir menuju tenggara Samudra Hindia melalui perairan Indonesia dikarenakan adanya perbedaan tekanan massa air antara kedua samudra, yang mana fenomena ini dikenal dengan nama Arus Lintas Indonesia (Arlindo). Massa air di perairan Indonesia yang mengalir ke Samudra Hindia akan digantikan perairan termoklin Pasifik Utara dan Pasifik Selatan. Sehingga, timbul Mix-Master Indonesia atau percampuran massa air akibat pasang surut yang kuat dan menghasilkan perairan Indonesia yang unik. Sebagai salah satu jalur Arus Lintas Indonesia, banyak fenomena yang terjadi di laut Indonesia Timur, seperti percampuran (mixing) massa air yang kuat. Percampuran massa air berhubungan dengan upwelling dan downwelling yang berpengaruh pada penyebaran fitoplankton yang menjadi indikasi kelimpahan klorofil-a di permukaan. Klorofil memiliki peran penting dalam mengatur iklim, yakni berperan menyerap karbon dan memproduksi oksigen secara kolektif dalam jumlah di ekosistem laut. Pada penelitian ini, akan dilakukan deteksi klorofil-a dengan menggunakan teknologi ocean color remote sensing dari tahun 2016-2021. Data ocean color yang digunakan berasal dari satelit Sentinel-3 Ocean and Land Color Instrument multi temporal dengan interval per bulan. Estimasi kandungan klorofil-a dilakukan menggunakan Case-2 Regional Coast Color processor, yang mana merupakan processor yang terintegrasi dengan Sentinel Application Platform dan dapat menghasilkan luaran konsentrasi klorofil-a. Variabilitas hasil konsentrasi klorofil-a di laut Indonesia Timur, beserta data arus, akan dianalisis secara visual. Selain itu, variabilitas klorofil-a dianalisis berdasarkan periode terjadinya angin muson, yaitu pada waktu Muson Timur, Muson Barat, dan musim peralihannya. Berdasarkan hasil penelitian, didapatkan bahwa klorofil-a memiliki pola musiman. Klorofil-a cenderung lebih tinggi pada saat Muson Timur (Juni hingga Agustus) dan cenderung rendah pada Muson Barat (Desember hingga Februari). Sejak tahun 2016 hingga 2021, nilai konsentrasi maksimum klorofil-a yang berkisar antara 13,35 μg/L – 30 μg/L. Rata-rata konsentrasi klorofil-a berkisar antara 0,16 μg/L – 0,52 μg/L. Terakhir, konsentrasi minimum klorofil-a berada pada rentang nilai 0,02 – 0,03 μg/L.
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Indonesia's sea area is located between the Pacific and the Indian Ocean. The mass of water from the western Pacific Ocean flows towards the southeast of the Indian Ocean through Indonesian waters due to the difference in mass pressure between the two oceans, known as the Indonesian Through Flow. The water mass in Indonesian waters flowing into the Indian Ocean will be replaced by the North and South Pacific thermocline waters. Thus, the Indonesian Mix-Master arises or the mixing of water masses due to strong tidal-induced mixing and produces unique Indonesian waters. As one of the Indonesian Through Flow lanes and a deep sea, many phenomena occur in the East Indonesian Sea, such as solid mixing of water masses. The mixing of water masses is related to upwelling and downwelling, which affects the distribution of phytoplankton, indicating the abundance of chlorophyll-a on the surface. Chlorophyll has an essential role in regulating climate, which plays a role in absorbing carbon and producing oxygen collectively in marine ecosystems. In this study, chlorophyll-a detection will be carried out using sea color remote sensing technology from 2016-2021. At monthly intervals, the ocean color data comes from the multi-temporal Sentinel-3 Ocean and Land Color Instrument satellite. Extraction of chlorophyll-a content was carried out using the Case-2 Regional Coast Color processor, which is a processor that is integrated with the Sentinel Application Platform and can produce external concentrations of chlorophyll-a. The variability of chlorophyll-a concentration results in the East Indonesian Sea, together with current data, will be visually analyzed with the Indonesian Through Flow phenomenon during the Southeast Monsoon, Northwest Monsoon, and their transitional seasons. Based on the research results, chlorophyll- a has a seasonal pattern. Chlorophyll-a tends to be higher during the Southeast Monsoon (June to August) and tends to be low during the Northwest Monsoon (December to February). From 2016 to 2021, the maximum chlorophyll-a concentration values ranged from 13.35 μg/L - 30 μg/L. The average chlorophyll-a concentration ranged from 0.16 μg/L - 0.52 μg/L. Last, the minimum chlorophyll-a concentration ranges from 0.02 - 0.03 μg/L.
| Item Type: | Thesis (Other) |
|---|---|
| Uncontrolled Keywords: | Mix-Master Indonesia, mixing, upwelling, downwelling, ocean color remote sensing, Ocean and Land Color Instrument, Case-2 Regional Coast Color processor, Sentinel Application Platform, pencampuran massa air, pencampuran, kenaikan massa air, penurunan massa air, penginderaan jauh warna laut, Instrumen Warna Laut dan Darat, Kasus-2 Prosesor Warna Pantai Regional, Platform Aplikasi Sentinel |
| Subjects: | G Geography. Anthropology. Recreation > GA Mathematical geography. Cartography > GA102.4.R44 Cartography--Remote sensing G Geography. Anthropology. Recreation > GE Environmental Sciences |
| Divisions: | Faculty of Civil, Planning, and Geo Engineering (CIVPLAN) > Geomatics Engineering > 29202-(S1) Undergraduate Thesis |
| Depositing User: | Megivareza Putri Hanansyah |
| Date Deposited: | 16 Aug 2023 08:38 |
| Last Modified: | 16 Aug 2023 08:40 |
| URI: | http://repository.its.ac.id/id/eprint/100719 |
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