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HESS | Articles | Volume 23, issue 3
Hydrol. Earth Syst. Sci., 23, 1375–1392, 2019
https://doi.org/10.5194/hess-23-1375-2019
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.

Special issue: Environmental changes and hazards in the Dead Sea region (NHESS/ACP/HESS/SE...

Hydrol. Earth Syst. Sci., 23, 1375–1392, 2019
https://doi.org/10.5194/hess-23-1375-2019
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.

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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Cited articles

Akar, P. J. and Jirka, G. H.: Buoyant spreading processes in pollutant transport and mixing Part 2, Upstream spreading in weak ambient current, J. Hydraul. Res., 33, 87–100, 1995. 
Burg, A., Yechieli, Y., and Galili, U.: Response of a coastal hydrogeological system to a rapid decline in sea level; the case of Zuqim springs, The largest discharge area along the Dead Sea coast, J. Hydrol., 536, 222–235, https://doi.org/10.1016/j.jhydrol.2016.02.039, 2016. 
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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.
Submarine groundwater discharge is highly variable in spatial and temporal terms. With a novel...
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