News Archive

News Archive

17 August 2017

New paper published by R. Silasari

Rasmiaditya Silasari recently published her paper in the journal 'Hydrological Processes'. The paper is about the potential of high temporal resolution time‐lapse photography for mapping the dynamics of saturation areas on the hillslope scale during natural rainfall. This link leads you to the paper.


02 August 2017

Infiltrometer measurements over whole catchment

Giorgio Nicchi and Tommaso Picciafuoco, guests students from University of Perugia, Italy are continuing with infiltrometer measurements in the HOAL. Since now most of the parts of the catchment have been harvested recently, they can cover a large percentage of the catchment with the planned measurements (see map). The measurements will happen in the next weeks and per spot 9 repetitions in a 3x3 raster are planned.


infiltrometer GPS localisation
30 June 2017

Temporal soil net removal

Currently the temporal soil net, which is measuring soil moisture and soil temperature down to 50cm below ground surface, is removed. The soil net was partly installed in the middle of agricultural used fields, currently wheat is growing there. Since the crop is harvested soon and soil tillage follows, the sensors have to be taken out from the fields. After the farmers field works they will be set up again for the next measuring period.

The very dry conditions in the last week are also visible at this field works. Big drought cracks are present all around and the very dry and hard soil makes it quite a tough job to dig the sensors out.


soil net removal
12 May 2017

Maintenance campaign

Last week several doctoral students of the doctoral programme were busy in the HOAL in repairing and maintaining equipment in the research catchment.

Casings of data and power supply cables were checked for damages, which e.g. sometimes can occur by animals and were repaired. Also weathered logger boxes and discharge measuring weirs were smoothed and repainted. It was a relatively little effort to extend the lifetime of all the installations, which are permanent exposed to the influences of weather and environment.


maintenance cable reparation
13 April 2017

Eddy covariance calibration

Yesterday Patrick Hogan and Borbala Szeles have been in the field to calibrate the Eddy covariance devices. Borbala will now gradually take over the responsibilty for the weather station installations with the support of Patrick. For the calibration a dew point generator was used. This device is used for providing a stream of gas with a precisely controlled dew point which for example is used for calibrating the H2O channel of gas analyzers.


Weather station calibration 1