PRADITYA, RESWINDU TEGAR (2023) ANALISIS KONSENTRASI DAN DISTRIBUSI SPASIAL MATERIAL PADATAN TERSUSPENSI (MPT) BERDASARKAN PENGOLAHAN CITRA SATELIT SENTINEL-2 di WILAYAH PERAIRAN TELUK SEMARANG, JAWA TENGAH (23dik316). Undergraduate thesis, Fakultas Perikanan dan Ilmu Kelautan.

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Abstract

ABSTRAK
(Reswindu Tegar Praditya. 26040119130163. Analisis Konsentrasi dan Distribusi Spasial Material Padatan Tersuspensi (MPT) Berdasarkan Pengolahan Citra Satelit Sentinel-2 di Wilayah Perairan Teluk Semarang, Jawa Tengah. Subagiyo dan Muhammad Helmi).
Wilayah perairan Teluk Semarang merupakan wilayah yang mendapat tekanan cukup besar dikarenakan terdapat berbagai aktivitas manusia seperti aktivitas industri, pembangkit listrik, dan pemukiman di sepanjang kawasannya. Tingginya aktivitas manusia dikhawatirkan dapat meningkatkan konsentrasi material padatan tersuspensi (MPT) yang memabahayakan kondisi perairan. Oleh karena itu, dilakukan analisis konsentrasi dan distribusi spasial material padatan tersuspensi (MPT) dengan membangun model algoritma menggunakan nilai reflektansi spectral dari band Citra Satelit Sentinel-2 level 2A. Hasil dari penelitian ini yaitu model algoritma yang dibangun berdasarkan persamaan regresi antara nilai reflektansi spectral Citra Sentinel-2 level 2A penjumlahan Band 4 (Red) dan Band 5 (Vegetation Red Edge) dengan data konsentrasi MPT in situ yang memiliki koefisien korelasi (R) sebesar 0,89 dan koefisien determinasi (R2 ) sebesar 0,79. Uji validasi menunjukkan model algoritma yang dibangun memiliki nilai RMSE sebesar 0,042 dan nilai Bias kumulatif sebesar -0,032. Analisis nilai konsentrasi MPT menggunakan data citra tanggal perekaman 09 Desember 2022, 13 Januari 2023, dan 19 Maret 2023 didapatkan rentang nilai konsentrasi MPT sebesar 0,025- 0,63 mg/L, 0,035-0,43 mg/L, dan 0,103-0,42 mg/L. Hasil pengolahan data citra tanggal perekaman 19 Maret 2023 memiliki pola sebaran MPT tingkat tinggisedang dalam area yang paling luas dikarenakan perekaman citra terjadi pada saat pasang. Nilai konsentrasi MPT di wilayah perairan Teluk Semarang tergolong rendah (<20 mg/L). Nilai konsentrasi MPT di lokasi penelitian masih memenuhi standar baku mutu karena nilainya berada di bawah 20 mg/L.
Kata kunci: Citra satelit Sentinel-2, material padatan tersuspensi, model algoritma, Teluk Semarang

ABSTRACT
(Reswindu Tegar Praditya. 26040119130163. Analysis of Concentration and Spatial Distribution of Total Suspended Solid (TSS) based on Sentinel-2 Satellite Image Processing in the Waters of Semarang Bay, Central Java. Subagiyo and Muhammad Helmi).
The waters of Semarang Bay are areas that are under considerable pressure because there are various human activities such as industrial activities, power plants, and settlements along the area. High human activity is feared to increase the concentration of suspended solids material (MPT) which endangers water conditions. Therefore, analysis of the concentration and spatial distribution of suspended solids material (MPT) was carried out by building an algorithm model using spectral reflectance values from the Sentinel-2 level 2A Satellite Image band. The result of this study is an algorithm model built based on a regression equation between the spectral reflectance value of Sentinel-2 image level 2A summation of Band 4 (Red) and Band 5 (Vegetation Red Edge) with in situ MPT concentration data which has a correlation coefficient (R) of 0.89 and a coefficient of determination (R2) of 0.79. The validation test shows that the algorithm model built has an RMSE value of 0.042 and a cumulative Bias value of -0.032. Analysis of MPT concentration values using image data on recording dates of December 9, 2022, January 13, 2023, and March 19, 2023, obtained a range of MPT concentration values of 0.025-0.63 mg/L, 0.035-0.43 mg/L, and 0.103-0.42 mg/L. The results of image data processing on March 19, 2023 recorded have a highmedium level MPT distribution pattern in the largest area because image recording occurs at high tide. The value of MPT concentration in the waters of Semarang Bay is low (<20 mg / L). The value of MPT concentration at the research site still meets quality standards because the value is below 20 mg / L.
Keywords: Algorithm model, Sentinel-2 satellite image, Semarang Bay, suspended solids material

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