Quantitative estimation of submarine groundwater discharge using airborne thermal infrared data acquired at two different tidal heights

Kang, Kefei; Kim, Duk‐jin; Kim, Yunjee; Lee, Eun-Hee; Kim, Bong-Gwan; Kim, Seung Hee; Ha, Kyoochul; Koh, Dong‐Chan; Cho, Yang‐Ki; Kim, Guebuem

doi:10.1002/hyp.13387

Cited by 4 publications

(3 citation statements)

References 39 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Thermal imaging devices attached to aircraft have been used to aerially map thermal heterogeneity in coastal zones resulting from direct groundwater input (e.g., Coluccio et al, 2020;Danielescu et al, 2009;Lee et al, 2016a). Previous studies have utilized thermal infrared imagery to estimate local groundwater discharge via empirical relationships with thermal plume geometry (e.g., Bejannin et al, 2017;Danielescu et al, 2009;Kang et al, 2019;Kelly et al, 2019b;Lee et al, 2016a;Mundy et al, 2017;Tamborski et al, 2015). Small rotary-wing drones have the capacity to inexpensively collect thermal data with higher temporal and spatial resolution relative to conventional occupied aircraft (Dugdale et al, 2022;Lee et al, 2016b), although drone thermal data often involve additional challenges (e.g., thermal drift and limited spatial coverage; Dugdale et al, 2019;Kelly et al, 2019a).…”

Section: Introductionmentioning

confidence: 99%

Present and future thermal regimes of intertidal groundwater springs in a threatened coastal ecosystem

KarisAllen

Mohammed

Tamborski

et al. 2022

Hydrol. Earth Syst. Sci.

View full text Add to dashboard Cite

Abstract. In inland settings, groundwater discharge thermally modulates receiving surface water bodies and provides localized thermal refuges; however, the thermal influence of intertidal springs on coastal waters and their thermal sensitivity to climate change are not well studied. We addressed this knowledge gap with a field- and model-based study of a threatened coastal lagoon ecosystem in southeastern Canada. We paired analyses of drone-based thermal imagery with in situ thermal and hydrologic monitoring to estimate discharge to the lagoon from intertidal springs and groundwater-dominated streams in summer 2020. Results, which were generally supported by independent radon-based groundwater discharge estimates, revealed that combined summertime spring inflows (0.047 m3 s−1) were comparable to combined stream inflows (0.050 m3 s−1). Net advection values for the streams and springs were also comparable to each other but were 2 orders of magnitude less than the downwelling shortwave radiation across the lagoon. Although lagoon-scale thermal effects of groundwater inflows were small compared to atmospheric forcing, spring discharge dominated heat transfer at a local scale, creating pronounced cold-water plumes along the shoreline. A numerical model was used to interpret measured groundwater temperature data and investigate seasonal and multi-decadal groundwater temperature patterns. Modelled seasonal temperatures were used to relate measured spring temperatures to their respective aquifer source depths, while multi-decadal simulations forced by historic and projected climate data were used to assess long-term groundwater warming. Based on the 2020–2100 climate scenarios (for which 5-year-averaged air temperature increased up to 4.32∘), modelled 5-year-averaged subsurface temperatures increased 0.08–2.23∘ in shallow groundwater (4.2 m depth) and 0.32–1.42∘ in the deeper portion of the aquifer (13.9 m), indicating the depth dependency of warming. This study presents the first analysis of the thermal sensitivity of groundwater-dependent coastal ecosystems to climate change and indicates that coastal ecosystem management should consider potential impacts of groundwater warming.

show abstract

Section: Introductionmentioning

confidence: 99%

Present and future thermal regimes of intertidal groundwater springs in a threatened coastal ecosystem

KarisAllen

Mohammed

Tamborski

et al. 2022

Hydrol. Earth Syst. Sci.

View full text Add to dashboard Cite

show abstract

“…Further, although some riverine studies have considered the sensitivity of incoming groundwater to future climate change (e.g., Hannah & Garner, 2015;Kaandorp et al, 2019;Kurylyk et al, 2014b) Thermal imaging devices attached to aircraft have been used to aerially map thermal heterogeneity in coastal zones resulting from direct groundwater input (e.g., Coluccio et al, 2020;Danielescu et al, 2009;Lee et al, 2016a). Previous studies have utilized thermal infrared imagery to estimate local groundwater discharge via empirical relationships with thermal plume geometry (e.g., Bejannin et al, 2017;Danielescu et al, 2009;Kang et al, 2019;Kelly et al, 2019b;Lee et al, 2016a;Mundy et al, 2017;Tamborski et al, 2015). Small rotary-wing drones have the capacity to inexpensively collect thermal data with higher temporal and spatial resolution relative to conventional occupied aircraft (Dugdale et al, 2022;Lee et al, 2016b), although drone thermal data often involve additional challenges (e.g., thermal drift and limited spatial coverage; Dugdale et al, 2019;Kelly et al, 2019a).…”

Section: Introductionmentioning

confidence: 99%

Intertidal spring discharge to a coastal ecosystem and impacts of climate change on future groundwater temperature: A multi-method investigation

KarisAllen

Mohammed

Tamborski

et al. 2022

Preprint

View full text Add to dashboard Cite

Abstract. In inland settings, groundwater discharge is known to thermally modulate receiving surface water bodies and provide localized thermal refuges; however, the thermal influence of intertidal springs on coastal waters and the thermal sensitivity of these springs to climate change are not well studied. We addressed this knowledge gap with a field- and model-based study of a threatened coastal lagoon ecosystem in south-eastern Canada. We paired in-situ thermal and hydrologic monitoring with analyses of drone-based thermal imagery to estimate the discharge to the lagoon from intertidal springs and groundwater-dominated streams in summer 2020. Results, which were generally supported by independent radon-based groundwater discharge estimates, revealed that the combined summertime spring inflows (0.047 m3 s-1) were comparable to the combined stream inflows (0.050 m3 s-1). Heat flux analyses indicated that the net advection for the streams and springs were also comparable to each other but were two orders of magnitude less than the downwelling shortwave radiation across the lagoon. Although the lagoon-scale thermal effects of groundwater inflows were small compared to atmospheric forcing, spring discharge dominated heat transfer at a local scale, creating pronounced cold-water plumes along the shoreline. A numerical model was used to investigate seasonal and multi-decadal groundwater temperature patterns to relate measured spring temperatures to their respective aquifer source depths, and to consider long-term groundwater warming. Based on the different climate scenarios used for 2020 to 2100 (5-year averaged air temperature increase up to 4.32 °C), modelled 5-year averaged subsurface temperatures increased 0.08 to 2.23 °C in shallow groundwater (4.2 m depth) and 0.32 to 1.42 °C in the deeper portion of the aquifer (13.9 m), indicating the depth-dependency of warming. This study presents the first analysis of the thermal sensitivity of groundwater-dependent coastal ecosystems to climate change and indicates that coastal ecosystem management should consider the potential impacts of groundwater warming.

show abstract

“…Excessive nutrients and other substances carried by SGD are discharged into the coastal waters, which will produce man-made interference to the biogeochemical process in the coastal zone, causing serious damage to mariculture, fishing and other marine economic activities (Kim et al , 2005;Swarzenski et al , 2007;Hwang et al , 2010). SGD has been studied along different coast including sandy, bedrock fissure and karst coast, of which Many research sites are located in the east and west coasts of the United States in North America (Moore, 1996(Moore, , 2007(Moore, , 2010Zarnoch et al , 2017;Adolf et al , 2019;Kelly et al , 2019), and the eastern coastal areas of Brazil in South America (Niencheski and Windom, 2015;Dias et al , 2016;da Rochaet al , 2018), the Mediterranean coast of Europe (Aaron et al, 2019;Oehler et al, 2019;Tamborski et al, 2018Tamborski et al, ,2019 and the Baltic coast (Donis et al , 2017;Krall et al , 2017;Franzet al , 2019), The east and west coast of Australia (Lamontagne and Webster, 2019;Maher et al , 2019;Sadat-Noori and Glamore, 2019), South Korea , Asia (Lee et al , 2018;Cho et al , 2019;Kang et al , 2019) and the coast of Japan (Burnett et al , 2018;Nikpeyman et al , 2019;Zhu et al , 2019).…”

Section: Introductionmentioning

confidence: 99%

Study on SGD in the Coastal Zone of the Huanghai and Bohai: A review

zhang

Kong

Zhou

et al. 2020

Preprint

View full text Add to dashboard Cite

In recent years, hydrogeologists have paid more and more attention to the discharge of submarine groundwater(SGD), which is a typical and important process of the interaction between seawater and groundwater in coastal areas, tidal flats and estuaries.As an important sources of water and chemical materials to ocean, SGD affects the global water cycle and coastal ecological environment. SGD also influence the transport path of pollutants from land to the sea. Therefore, it affects the local and global circulation of coastal groundwater and seawater. Since it usually occurs in aquifer, it is easily overlooked by the researchers. In addition, due to the uncertainty of SGD in time and space, it is difficult to be measured accurately. Aiming at recently study, this paper will discuss the research process, research method, research field and environmental significance of SGD on the coast of the Huanghai and the Bohai. Based on the analysis of the existing research results, some suggestions on improving SGD investigation are put forward.

show abstract

Quantitative estimation of submarine groundwater discharge using airborne thermal infrared data acquired at two different tidal heights

Cited by 4 publications

References 39 publications

Present and future thermal regimes of intertidal groundwater springs in a threatened coastal ecosystem

Present and future thermal regimes of intertidal groundwater springs in a threatened coastal ecosystem

Intertidal spring discharge to a coastal ecosystem and impacts of climate change on future groundwater temperature: A multi-method investigation

Study on SGD in the Coastal Zone of the Huanghai and Bohai: A review

Contact Info

Product

Resources

About