Comparison of trend analysis models in water quality and quantity data in lignite mines in Western Macedonia, Greece

Abstract

In this study, daily measures of three water quality and quantity parameters from one monitoring Telemetric Stations (T.S.) were examined for trend. "PERSEAS" Research Team in cooperation with "Public Power Corporation" (DEH) of Greece, installed, operates and maintains four "R.E.MO.S." (Remote Environmnetal MOnitoring System) T.S., near the plant of "Kardia" & "Notio Pedio" mines in Western Macedonia, Greece. The two of the T.S., monitor the stagnant surface waters in the bottom of the mines while the other two, monitor ground water in specific well positions. The statistical sample of each one of the parameters consisted of 950 values based on daily measures for the period 2007 to 2009. Two statistical tests based on the least square method and one based on the Spearman's rank correlation test were used for the trend analysis. These tests were applied in the data of the one T.S. called "GEO-108".