Please use this identifier to cite or link to this item: https://hdl.handle.net/10593/24247
Title: A groundwater flow model for the Wolin Island area, including glaciotectonic deformation
Authors: Hoc, Ryszard
Sadurski, Andrzej
Wiśniowski, Zenon
Keywords: GIS
groundwater modeling
groundwater exploitation
coastal hydrogeology
southern Baltic Sea coast
Issue Date: Dec-2018
Publisher: Instytut Geologii UAM
Citation: Geologos, 2018, 24, 3, s.207-216
Abstract: During the construction of mathematical models for mapping hydrogeological conditions it is necessary to apply sim- plifications, both in the geological structure and in hydrogeological parameters used. The present note discusses prob- lems surrounding the mapping of glaciotectonic disturbances that occur in the northern part of Wolin Island (northwest Poland). For this part of the island, a direct outflow of groundwater towards the Baltic Sea basin has been determined on the basis of geophysical survey results. An important feature in the hydrogeological conditions here is the isolation of groundwater from both the Baltic Sea and Szczecin Lagoon by clay with a Cretaceous xenolith. Such a geologi- cal structure explains the presence of perched water at considerable heights in zones close to the cliffs, without any significant hydraulic connection with surrounding reservoirs. Hydrogeological conditions of Wolin Island have been modelled using the Visual MODFLOW package v.4.2. In the vertical section, these conditions can be simplified to one aquifer (Pleistocene-Holocene), in which two aquifers can be distinguished. In a large part of the island, these remain in mutual hydraulic contact: layer I – upper, with an unconfined aquifer, and layer II – lower, with a confined aquifer, locally an unconfined one. The schematisation of hydrogeological conditions adopted here has allowed to reproduce present groundwater dynamics in the study area.
URI: http://hdl.handle.net/10593/24247
ISBN: 978-83-232187-4-6
ISSN: 1426-8981
Appears in Collections:Geologos, 2018, 24, 3

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