Published September 4, 2023 | Version v1
Conference paper Open

AEM survey of the Neretva Delta (Croatia): a case study for hydrogeology

  • 1. LLC Geotechnologies, 141540, Povarovo, Russia, info@geotechnologies.ru
  • 2. University of Padua, 35122 Padova, pietro.teatini@unipd.it
  • 3. University of Cagliari, 09124 Cagliari, Italy, gvignoli@unica.it
  • 4. University of Split, 21000 Split, Croatia, veljko.srjic@gradst.hr

Description

Groundwater salinisation is a serious problem affecting numerous areas of the world, and Neretva's delta in Croatia is one of them. Airborne electromagnetics is already widely used to feed data-driven decision and management processes with accurate (hydro)geomodels and, by doing so, to mitigate the detrimental effects of salinisation. In this perspective, in 2021, an airborne electromagnetic survey was flown over about 100 km 2. The overall goal of the survey was to better understand the hydrogeology of the plain leading to a more quantitative assessment of the saltwater intrusion and possible preferential paths. Here, we present the results of data processing and inversion. We built a (pseudo-)3D resistivity model based on 1D forward approximation. And we compare it against ground-based electrical measurements. According to the available boreholes, freshwater is related to a relatively resistive unit.

Other

Open-Access Online Publication: November 1, 2023

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