Surficial and Groundwater Exchanges by Means of Landsat Thermal Data: The Eastern Laizhou Bay (China)

Xing, Qianguo and Braga, Federica and Tosi, Luigi and Lou, Mingjing and Zaggia, Luca and Teatini, Pietro and Gao, Xuelu and Yu, Liangju and Wen, Xiaohu and Shi, Ping (2016) Surficial and Groundwater Exchanges by Means of Landsat Thermal Data: The Eastern Laizhou Bay (China). In: Proceedings of Dragon 3 Final Results & Dragon 4 Kick-Off Symposium. SP (739). ESA Communications, Netherlands, pp. 1-8. ISBN 978-92-9221-304-6

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Abstract

In this study, we observed Sea Surface Temperature (SST) anomalies in the Southern and Eastern Laizhou Bay, China, during summer and winter, by means of Landsat thermal data. The interpretation of these features, also considering the morpho-hydrogeologic setting of the areas, showed that SST anomalies are not related to long-shore circulation or river discharge and therefore may be associated to local potential submarine groundwater discharge (SGD). Moreover, in situ measurements of salinity and temperature in surficial waters support this hypothesis of SGD in the eastern Laizhou Bay. Our results suggest that the analysis of satellite thermal images can conveniently address hydrogeological field investigations permitting to map features, both localized and diffuse, such as gradients and anomalies associated to submarine groundwater seepage. Although the use of remote sensing cannot replace direct investigations, it proves to be an efficient tool for driving field activities, like samplings and geophysical surveys for detailed SGD investigations.

Item Type:	Book Section
Additional Information:	4–8 July 2016 Wuhan, PR China; Co-organised by The National Remote Sensing Center of China (NRSCC) European Space Agency (ESA)
Uncontrolled Keywords:	Sea Surface Temperature (SST), Laizhou Bay, China, submarine groundwater discharge (SGD), low-salinity groundwater reserves, Landsat ETM+, Landsat 8 OLI
Subjects:	500 Scienze naturali e Matematica > 550 Scienze della Terra 500 Scienze naturali e Matematica > 550 Scienze della Terra > 551 Geologia, Idrologia, Meteorologia 500 Scienze naturali e Matematica > 550 Scienze della Terra > 551 Geologia, Idrologia, Meteorologia > 551.4 Geomorfologia e idrosfera > 551.48 Idrologia (Classificare qui il bilancio idrologico, il ciclo idrologico, la Limnologia) (Classificare le opere d'insieme su Oceanografia e Idrologia in 551.46; classificare le risorse idriche, le opere interdisciplinari sull'acqua in 553.7) 500 Scienze naturali e Matematica > 550 Scienze della Terra > 551 Geologia, Idrologia, Meteorologia > 551.4 Geomorfologia e idrosfera > 551.49 Acque sotterranee (acque sub-superficiali) (Classificare qui le falde acquifere) (per le acque termali vedi 551.23) 500 Scienze naturali e Matematica > 550 Scienze della Terra > 555 Scienze della terra – Asia (Classificare qui la Geologia, i rilevamenti geologici, la stratigrafia dell’Asia)
Depositing User:	Dr Luigi Tosi
Date Deposited:	12 Dec 2016 13:35
Last Modified:	12 Dec 2016 13:35
URI:	http://eprints.bice.rm.cnr.it/id/eprint/15546

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