Geomorphic changes within the alluvial fan as an area of 58,940 m 2, located at the mouth of the Scott River, were detected by multi-sites terrestrial laser scanning using a Leica Scan Station C10 and then estimated using Geomorphic Change Detection (GCD) software. The increase in discharge to 4.6 m 3/s, initiated by the glacial flood, mobilized significant amounts of sediment in the river bed and channel. These conditions caused a rapid and abrupt response of the river with the dominant (90%) glacier-fed. These values exceeded multi-year averages (32 mm and 5.0 ☌, respectively) at an average discharge of 0.9 m 3/s (melt season mean 1986–2011). The largest flood in 20 years was caused by high precipitation with a synchronous rise in temperature from about 1.0 to 8.6 ☌. ![]() During the following four days, it constituted in total 47 mm, i.e., 50% of the precipitation total for the measurement period of 2013. ![]() In the summer of 2013, during the measurement season, the highest daily precipitation (17 mm) occurred on 13 August. This type of flood occurs on Svalbard increasingly during periods of abnormally warm or rainy weather in summer or early autumn, and the probability of occurrence grows in direct proportion to the increase in temperature and/or precipitation intensity. A four-day glacier-melt flood (13–16 August 2013) caused abrupt geomorphic changes in the proglacial gravel-bed Scott River, which drains the small (10 km 2) Scott Glacier catchment (SW Svalbard).
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