Last night a heavy thunderstrom crossed the HOAL catchment. In around 15min 40mm of rainfall occured, the highest measured intensity of the rainfall was 3,5mm/min for a duration of 10min. The highest measured discharge at the catchment outlet was >800 l/s and the installed H-flume (designed for…

Philipp Stadler got his publication "Real-time monitoring of beta-d-glucuronidase activity in sediment laden streams: A comparison of prototypes" recently published.

In his work he compares four automatic prototypes for the detection of enzymatic activity in the HOAL stream, which is used as a…

Today Ottavia Zoboli (Alumni of the DK programme on water resource systems) and Helene Trautvetter (Institute for Water Quality, Resources and Waste Management, TU Wien) installed a sediment sampler in the HOAL catchment. Within a project from the TU Wien and the Umweltbundesamt of Austria, a…

As predicted last weekend heavy rain fall occured in eastern Austria. Also the HOAL was affected by high precipitation rates.

In 30 hours around 60mm of rainfall occured and this led to a discharge rise at the catchment outlet from 1,5 l/s to over 40,0 l/s. Compared to the mean rates (820mm/year…

In the last days Rasmi and Xiaofei were operating electromagnetic induction (EMI) measurements at the HOAL with support of Geophysics students from TU Wien. Two devices with a shallow and a deep range of the signal have been used. There were several profiles on the different managed crop fields in…

For the ongoing ESA Sentinel-1A satellite calibration in the HOAL new soil moisture sensors were installed additionally between the existing soil net by Mariette Vreugdenhil. A network of in total 20 additional sensors will help evaluating the signals of Sentinel-1A.

A goal of the satellite…

Mariette Vreugdenhil started to prepare an evaluation campaign of the European Space Agency's Sentinel-1A satellite, which is a polar-orbiting, all-weather, day-and-night radar imaging mission for land and ocean services.

The campaign will contain measurements of vegetation water contents, crop…

Today micro meteorologist Patrick Hogan moved one of the mobile eddy covariance stations again to a new spot in the HOAL catchment. For the next months the station will measure the atmospheric conditions over a winter barley field.

The results of this measurements will again help to understand the…

Today Rasmi Silasari is in the field for making ground control measurements for calibrating her camera, which is mounted on the top of the HOAL weather station mast. The camera makes regularly pictures and movies of a certain part of a field, where regularly overland flows occur after heavy…

Philipp Stadler is in the field today to operate the regularly maintenance works of the BACTcontrol devices, which he is using for his investigations of fecal pollution in the HOAL stream.
With the support of a colleague, the devices are removed from the sample location at the catchment outlet and…