THE SPATIAL DISTRIBUTION OF SELECTED OPTICAL ACTIVE COMPONENTS IN THE GULF OF IZMIT USING BIVARIATE/MULTIVARIATE REGRESSION ANALYSIS

F. Sunar, A. Dervişoǧlu, N. Yaǧmur, E. Aslan, H. Atabay

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Özet

Compared to traditional field-based (in-situ sampling) measurements, satellite-based remote sensing is an accurate, timely and cost-effective approach to monitor the dynamics of water bodies using images at different spatial and temporal scales. With satellite-based remote sensing techniques, qualitative measurements obtained directly from satellite images are integrated with in-situ measurements, enabling the establishment of spectral statistical relationships between satellite data and water quality physical indicators such as suspended solids, turbidity and chlorophyll-a. In this study, the spatial distribution of three water quality parameters (Chlorophyll-a (Chl-a), Secchi disk and Conductivity (EC)) which are optical active components (OAC) in the Gulf of Izmit were evaluated using in-situ water quality measurements, together with both field-spectroradiometer measurements and Sentinel-2 satellite imagery. In-situ water quality and field-spectroradiometer measurements were collected at the same date with the satellite overpass. Bivariate and multivariate regression models were established to analyse the correlation of in-situ water quality measurements with two different measurement datasets (i.e. satellite and spectroradiometer), and then the results were evaluated with two accuracy metrics Root Mean Square Error (RMSE) and Mean Absolute Error (MAE); and compared visually with the spatial distribution maps of the three water quality parameters generated by the ordinary Kriging interpolation method.

Orijinal dilİngilizce
Sayfa (başlangıç-bitiş)361-366
Sayfa sayısı6
DergiInternational Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences - ISPRS Archives
Hacim48
Basın numarasıM-1-2023
DOI'lar
Yayın durumuYayınlandı - 21 Nis 2023
Harici olarak yayınlandıEvet
Etkinlik39th International Symposium on Remote Sensing of Environment, ISRSE 2023 - Antalya, Turkey
Süre: 24 Nis 202328 Nis 2023

Bibliyografik not

Publisher Copyright:
© 2023 International Society for Photogrammetry and Remote Sensing. All rights reserved.

Finansman

This work has been supported by the “Integrated Marine Pollution Monitoring 2020-2022 Programme” carried out by the Ministry of Environment, Urbanization and Climate Change/General Directorate of EIA, Permit and Inspection/ Department of Laboratory, Measurement and coordinated by TUBITAK-MRC ECPI.

FinansörlerFinansör numarası
Department of Laboratory
Ministry of Environment

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