WARDANI, ADELLA EKA (2023) STUDI SEBARAN KLOROFIL-A DAN MATERIAL PADATAN TERSUSPENSI (MPT) DI MUARA SUNGAI LOJI, PEKALONGAN (23dos111). Undergraduate thesis, Fakultas Perikanan dan Ilmu Kelautan.

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Abstract

ABSTRAK
(Adella Eka Wardani. 26050119120005. Studi Sebaran Klorofil-a dan Material Padatan Tersuspensi (MPT) di Muara Sungai Loji, Pekalongan. Sri Yulina Wulandari dan Baskoro Rochaddi).

Muara Sungai Loji, Pekalongan menjadi tempat pembuangan limbah berbagai aktivitas masyarakat sekitar. Limbah tersebut dapat mempengaruhi berbagai parameter perairan diantaranya klorofil dan MPT. Tujuan penelitian ini adalah untuk mengetahui sebaran klorofil-a dan MPT dari hasil pengukuran data lapangan pada periode musim timur. Serta untuk menganalisis hubungan antara klorofil-a dan material padatan tarsuspensi. Penelitian ini dilaksanakan pada tanggal 19 Juni 2022 dengan pengambilan sampel klorofil dan MPT secara in situ pada 11 titik lokasi penelitian. Sampel yang diperoleh dianalisis di laboratorium
Geologi dan Kimia Fakultas Perikanan dan Ilmu Kelautan Universitas Diponegoro. Penelitian dilaksanakan dengan pendekatan kuantitatif dan hasil penelitian in situ di-overlay pada citra yang diperoleh dari satelit Sentinel-2 dengan pendekatan interpolasi spline with barrier. Model arus 2D sebagai data
pendukung diperoleh dengan pengolahan data angin, pasang surut, dan batimetri dengan menggunakan software MIKE DHI 21 modul flow model (FM). Hasil penelitian menunjukkan bahwa pada muara Sungai Loji, Pekalongan, konsentrasi klorofil-a memiliki kisaran nilai antara 1,494 – 3,788 µg/L sedangkan, nilai
konsentrasi material padatan tersuspensi berada dalam rentang 57,73 – 70,27 mg/L. Sebaran klorofil-a dan MPT memiliki pola pergerakan yang dipengaruhi oleh masukan bahan organik dari wilayah muara serta dipengaruhi arus dan angin pada periode musim timur sehingga bergerak dari arah tenggara menuju ke barat laut. Selanjutnya klorofil-a dan material padatan tersuspensi di muara Sungai Loji, Pekalongan memiliki hubungan yang berkorelasi positif dengan nilai koefisienkorelasi (r) sebesar
0,29767 dan berdasarkan koefisien determinasinya MPT mempengaruhi konsentrasi klorofil-a sebesar 8,86%.
Kata kunci: Klorofil-a, MPT, Sentinel-2, Muara Sungai Loji

ABSTRACT
(Adella Eka Wardani. 26050119120005. Study of Chlorophyll-a and
Total Suspended Solid (TSS) Distribution at Loji River Estuary, Pekalongan. Sri Yulina Wulandari dan Baskoro Rochaddi).

Loji River Estuary, Pekalongan is a waste disposal site for various
community activities. The waste can affect various water parameters including chlorophyll and TSS. The purpose of this study was to determine the distribution of chlorophyll-a and TSS from the results of field data measurements in the east monsoon period. As well as to analyze the relationship between chlorophyll-a and suspended solids material. This research was carried out on June 19, 2022 by insitu sampling of chlorophyll and TSS at 11 research location points. The samples obtained were then analyzed in the Geology and Chemistry laboratory, Faculty of Fisheries and Marine Sciences, Diponegoro University. This research was carried out using a quantitative approach and the results of the in-situ research were overlaid on images obtained from the Sentinel-2 satellite using a spline with barrier interpolation approach. The 2D current model as supporting data is obtained by processing wind, tide, and bathymetry data using the MIKE DHI 21 module flow model (FM) software. The results showed that at the mouth of the Loji River, Pekalongan City, the concentration of chlorophyll-a had a range of values between 1.494 – 3.788 µg/L, while the suspended solids concentration
values ranged from 57.73 – 70.27 mg/L. The distribution of chlorophyll-a and TSS has a movement pattern that is influenced by the input of organic matter from the estuary area and is influenced by currents and winds in the east monsoon period
so that it moves from the southeast to the northwest. Furthermore, chlorophyll-a and suspended solids at the mouth of the Loji River, Pekalongan City have a positive correlation with a correlation coefficient (r) of 0.29767 and based on the coefficient of determination TSS affects the concentration of chlorophyll-a by 8.86%.
Keywords: Chlorophyll-a, TSS, Sentinel-2, Loji River Estuary

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