Research in the HOAL / Groundwater
17 November 2017

Deep borehole groundwater sampling

Today again Lovrenc Pavlin and Markus Oismüller were operating the groundwater sampling at the...


03 November 2017

Preparing temporal soil net for next season

The temporal soil net is currently prepared and checked for the next installation in the HOAL...


13 October 2017

European network of hydrological observatories (ENOHA)

Recently the homepage of the European network of hydrological observatories - short 'ENOHA'...


22 September 2017

Deep borehole groundwater sampling

Recently Lovrenc Pavlin, new doctoral student from Slovenia in our DK programme, was operating...


30 August 2017

Splash erosion investigations

Nives Balenovic, doctoral student from Croatia working in a cooperation project from IKT...


Science Questions – What are the Dynamics and Controls of Subsurface Flow and Transport?

Much of the pollution in the landscape moves in the subsurface. The timing and location of pollution transport is driven by the groundwater dynamics. Groundwater levels and chemical characteristics are monitored at numerous locations within the HOAL.

A number of geophysical surveys are being conducted to improve the delineation of hydrogeological heterogeneities and processes in the subsurface. The techniques include ground penetrating radar, induced polarization and low-induction number electromagnetic induction methods. The information on the subsurface so obtained is combined with numerical flow and transport models.

To understand the stream-aquifer interactions several tracer tests were performed. These tests allowed the estimation of stream bank fluxes. Infrared cameras are used to identify hotspots of groundwater recharge into the stream. Mass balances over sections of the stream are used to determine the role of near-stream riparian trees on the daily fluctuations of the stream flow during low flow conditions.

HOAL monitoring