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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.&nbsp, The 28th IUGG General Assembly (IUGG2023) (Berlin 2023)

Following the rapid technology development on smart and electronic textiles, research on textile antennas has rapidly emerged during the last decade due to their numerous applications in the health and safety sectors. Integrated electronic components in textile structures enables the development of new products and services for commercial and tactical applications. Correspondingly, antenna systems that are either embedded in clothing or developed using textile materials are needed. However, the inherent impairments of antenna operability when integrated into garments (i.e. bending and crumbling due to the user’s mobility) make the development of textile antennas a challenging task. Another important issue is the operation of antennas in close vicinity to the human body, which can be modeled as a large volume with electrical properties different than those of air. In this paper, we report a linear spiral antenna design with a sufficiently large bandwidth to support wireless communications in a multitude of available networks, and also the potential to be used for body scanning and medical imaging through microwave transmission and scattering measurements.