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Hydrology and Earth System Sciences An interactive open-access journal of the European Geosciences Union
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HESS | Articles | Volume 23, issue 3
Hydrol. Earth Syst. Sci., 23, 1375–1392, 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
© 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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In situ observations of turbulent ship wakes and their potential implications for vertical mixing
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Revised manuscript under review for OS
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A multi-environmental tracer study to determine groundwater residence times and recharge in a structurally complex multi-aquifer system
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Subject: Coasts and Estuaries | Techniques and Approaches: Instruments and observation techniques
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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,, 2016. 
Cable, J., Burnett, W., Chanton, J., Corbett, D., and Cable, P.: Field evaluation of seepage meters in the coastal marine environment, Estuarine, Coast. Shelf Sci., 45, 367–375, 1997. 
Cheng, J. and Liang, S.: Effects of Thermal-Infrared Emissivity Directionality on Surface Broadband Emissivity and Longwave Net Radiation Estimation, IEEE Geosci. Remote S., 11, 499–503,, 2014. 
Publications Copernicus
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.
Submarine groundwater discharge is highly variable in spatial and temporal terms. With a novel...