Inferring volumetric changes at a shallow lake from subpixel satellite-derived shorelines

Abstract

Lakes with strong variations in their water coverage may act as indicators of different natural phenomena. Recent techniques for the extraction of Satellite-Derived Shorelines (SDSs) with subpixel accuracy are potentially useful for accurate and continuous monitoring of the limits of water bodies along large periods. This work proposes a method for combining the shoreline position with a digital elevation model to assign elevation values to the points defining the SDSs along the period 1984–2020 in the shallow Gallocanta Lake (NE Iberian Peninsula)