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  Using satellite gravitational and soil moisture measurements for groundwater monitoring and analysis in two different hydroclimatic settings

Gemitzi, A., Stathopoulos, S., Zappa, L., Szostak, R., Wachniew, P. (2023): Using satellite gravitational and soil moisture measurements for groundwater monitoring and analysis in two different hydroclimatic settings, XXVIII General Assembly of the International Union of Geodesy and Geophysics (IUGG) (Berlin 2023).
https://doi.org/10.57757/IUGG23-3918

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Item Permalink: https://gfzpublic.gfz-potsdam.de/pubman/item/item_5021455 Version Permalink: https://gfzpublic.gfz-potsdam.de/pubman/item/item_5021455_1
Genre: Conference Paper

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 Creators:
Gemitzi, Alexandra1, Author
Stathopoulos, Stavros1, Author
Zappa, Luca1, Author
Szostak, Radoslaw1, Author
Wachniew, Przemyslaw1, Author
Affiliations:
1IUGG 2023, General Assemblies, 1 General, International Union of Geodesy and Geophysics (IUGG), External Organizations, ou_5011304              

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 Abstract: The presented work aims at evaluating the potential of using two satellite-derived hydrological variables to describe groundwater levels in two groundwater bodies located in different hydroclimatic conditions, both of which are important sources of water for humans and groundwater dependent ecosystems. Specifically, we employed the Total Water Storage Anomalies (TWSA) from GRACE(-FO) observations and Soil Moisture (SM) from the European Space Agency (ESA) Climate Change Initiative (CCI) to test the hypothesis that groundwater level can be effectively monitored by satellite data. An alluvial aquifer system located in NE Greece (Mediterranean climate) and a fissured-karstic aquifer system in S Poland (humid continental climate), were used to this end. Groundwater records obtained from numerous piezometers across the two study regions were compared with monthly GRACE(-FO) TWSA (Mascon product version 02 from the Jet Propulsion Laboratory), and with monthly CCI SM[lA1] . Results indicated that there is a strong relationship of GRACE(-FO) TWSA with groundwater level changes at the aquifer level in both sites, as expressed by the evaluation of Pearson’s correlation coefficient. Soil moisture is well correlated with groundwater levels in the Greek aquifer which is a shallow semi-confined one that interacts with soil moisture changes in the unsaturated zone. The correlation of soil moisture with groundwater levels was weaker for the significantly thicker Polish aquifer.

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Language(s): eng - English
 Dates: 2023-07-112023-07-11
 Publication Status: Finally published
 Pages: -
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 Rev. Type: -
 Identifiers: DOI: 10.57757/IUGG23-3918
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Title: XXVIII General Assembly of the International Union of Geodesy and Geophysics (IUGG)
Place of Event: Berlin
Start-/End Date: 2023-07-11 - 2023-07-20

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Title: XXVIII General Assembly of the International Union of Geodesy and Geophysics (IUGG)
Source Genre: Proceedings
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Publ. Info: Potsdam : GFZ German Research Centre for Geosciences
Pages: - Volume / Issue: - Sequence Number: - Start / End Page: - Identifier: -