Articles | Volume 23, issue 3
https://doi.org/10.5194/hess-23-1375-2019
https://doi.org/10.5194/hess-23-1375-2019
Research article
 | 
11 Mar 2019
Research article |  | 11 Mar 2019

Combining continuous spatial and temporal scales for SGD investigations using UAV-based thermal infrared measurements

Ulf Mallast and Christian Siebert

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Short summary
Submarine groundwater discharge is highly variable in spatial and temporal terms. With a novel approach using a hovering drone over a predefined location which recorded 670 surface temperatures images over a period of 167 s, we are able to (i) enhance focused SGD patterns otherwise camouflaged by strong lateral flow dynamics, (ii) show size variation of up to 155 % (focused SGD) and 600 % (diffuse SGD), and (iii) reveal short-term periodicity of the order of 20 to 78 s for diffuse SGD.