Landsat 8 data to an invention a permanent seasonal model of water quality parameters in Tigris River-Iraq (original) (raw)

1ST SAMARRA INTERNATIONAL CONFERENCE FOR PURE AND APPLIED SCIENCES (SICPS2021): SICPS2021

Empirical models have been developed in this study to predict water quality parameters, with the intention of demonstrating both benefits and the viability of using Landsat 8 spectral images to estimate water quality parameters in one main of the Iraqi Rivers, it is the Tigris River. The study area was along the part of the Tigris River which is located in Baghdad (capital) and Babylon governorate, in the middle part of Iraq. Water quality data archive for the of total dissolved solids (TDS), phosphates (PO 4), Sulfate (SO 4), and total hardness (TH) of the water Tigris river during four seasons (winter, spring, summer, and autumn) distributed along four years (2013, 2014, 2015 and 2017), was collected from sixteen ground stations along the part of Tigris river. The objective of this study to establish seasonal empirical mathematical models can use them every year during the season time without the need for calibration every time. For this purpose, has been following the different approach when compared with all of the studies which are carried before by collecting data for the same season and for different years. Prior to the establishment of the models, both preprocessing of data as radiometric and atmospheric corrections were applied to the optical data. Through multiple regression analysis between measured water quality parameters of the ground stations and the reflectance of the pixels corresponding to the sampling stations. Statistical models with determination coefficients between 0.89-0.95 were generated. Results indicate this novelty approach has generated mathematical models for the open time for any year but in the special season. Another indicator that from a small number of measured parameters can generate reliable models to estimate the concentration of TDS, PO 4 , SO 4 , and TH. So models generated from Landsat 8 can be used as a tool to facilitate the environmental, economic, and social management of the surface waters bodies like a Tigris river.