Ilham, Mochammad Fazel Ferdian (2025) Analisis Pasang Surut dan Kenaikan Muka Air Laut dengan GNSS Interferometric Reflectometry Periode 2021-2023. Other thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Kenaikan muka air laut menjadi hal penting dalam perubahan iklim, terutama pada wilayah pesisir. Penelitian ini bertujuan untuk menganalisis pasang surut dan mendeteksi tren kenaikan muka air laut dengan menggunakan metode GNSS Interferometric Reflectometry (GNSS-IR) selama periode waktu 2021-2023. Data GNSS diperoleh dari empat stasiun InaCORS milik BIG yaitu CMAR, CPOK, CBRG, dan CMBA. Sementara untuk data validasi menggunakan data pasang surut yang diambil dari lokasi yang sama dengan stasiun InaCORS yang dikelola oleh BMKG (Badan Meteorologi Klimatologi dan Geofisika). Pengolhan GNSS-IR menghasilkan data Reflector Height (RH) harian yang kemudian dibandingkan dengan data pasang surut observasi. Hasil pengolahan menunjukkan bahwa kualitas pengukuran dari GNSS-IR bervariasi bergantung pada kondisi lingkungan sekitar stasiun, dengan nilai RMSE yang didapat sekitar 0,3 sampai dengan 0,7 meter. Nilai korelasi terbaik diperoleh oleh Stasiun CBRG dengan nilai koefisien Pearson sebesar 0,923. Selain itu, dilakukan analisis regresi linier untuk mendeteksi tren perubahan kenaikan muka air laut pada stasiun yang digunakan dalam penelitian. Metode GNSS-IR terbukti dapat digunakan sebagai alat pemantauan pasang surut alternatif, akan tetapi masih memerlukan data validasi tambahan dan melakukan pemilihan terhadap lokasi antena GNSS agar mendapatkan hasil yang baik.
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Sea level rise is an important issue in climate change, especially in coastal areas. This study aims to analyze tides and detect sea level rise trends using the GNSS Interferometric Reflectometry (GNSS-IR) method during the period 2021-2023. GNSS data were obtained from four InaCORS stations owned by BIG, namely CMAR, CPOK, CBRG, and CMBA. For validation, tidal data were obtained from the same locations as the Ina CORS stations, managed by BMKG (Indonesian Meteorological, Climatological, and Geophysical Agency). GNSS-IR processing produced daily Reflector Height (RH) data, which was then compared with observed tidal data. The processing results showed that the quality of GNSS-IR measurements varied depending on the environmental conditions around the station, with a RMSE value ranging from 0,3 to 0,7 meter. The best correlation value was obtained by the CBRG station with a Pearson coefficient of 0,923. Additionally, linear regression analysis was conducted to detect trends in sea level rise at the stations used in the study. The GNSS-IR method has proven to be a viable alternative tool for tidal monitoring, however, it still reuires additional validation data and careful selection of GNSS antenna locations to achieve optimal results.
Item Type: | Thesis (Other) |
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Uncontrolled Keywords: | GNSS-IR, pasang surut, Reflector Height (RH), kenaikan muka air laut, validasi data, GNSS-IR, tide, Reflector Height (RH), sea level rise, satellite altimetry, data validation. |
Subjects: | T Technology > TC Hydraulic engineering. Ocean engineering > TC424 Water levels |
Divisions: | Faculty of Civil Engineering and Planning > Geomatics Engineering > 29202-(S1) Undergraduate Thesis |
Depositing User: | Mochammad Fazel Ferdian Ilham |
Date Deposited: | 25 Jul 2025 06:57 |
Last Modified: | 25 Jul 2025 06:57 |
URI: | http://repository.its.ac.id/id/eprint/121942 |
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