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Project

Soil dynamics and hillslope processes

Research areas: Physical Geography

Principal investigators: Prof. Dr. Olaf Bubenzer

Subproject C03 focuses on the identification, characterization, and quantification of past and present hillslope processes and their thresholds in the arid and hyper-arid regions of the Atacama Desert. Key questions include the geomorphological and sedimentological characterisation of different hillslopes, the evolution of various slope forms, and the continuity/discontinuity and the magnitude/frequency of the related processes.

2017 06 06 Project c3 4 300pxSetting and setup of artificial irrigation experiments on hillslopes close to Salar Grande.
Photo: Sven Ortloff
 
  2017 06 06 Project c3 5 300pxClose-up of the artificial irrigation device for investigating hillslope processes.
Photo: Lennart Meine

The long-term preservation of the landscape indicates that the uppermost surface is stabilised by protective (salt) crusts, depending on specific physical, chemical and/or biological processes and factors. Identifying formation and degradation processes of these surface crusts in the driest core of the Atacama is thus one additional aim of our project.

For a better understanding of past processes, we will investigate and quantify recent hillslope dynamics and their thresholds. Thus, suitable test sites for hillslope monitoring and artificial irrigation experiments (in order to induce hillslope processes) in each of the three CRC focus areas will be defined. Data acquisition for hillslope monitoring will be carried out using high-resolution Terrestrial Laser Scanning (TLS) and Unmanned Aerial Vehicle (UAV) surveys as well as Structure-from-Motion (SfM) photogrammetry techniques. Artificial irrigation experiments will comprise infiltration, run-off and erosion measurements in combination with close-range photogrammetry. Our subproject C03 will be realised in close collaboration with subprojects Z02 and Z03, which will provide the technical background for the implementation of our study.



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Contact

Speaker:
Prof. Dr. Tibor J. Dunai
Institute of Geology and Mineralogy | University of Cologne
Zülpicher Str. 49b | 50674 Cologne
+49-(0)221-470 2634 | tduanai@uni-koeln.de
  Coordinator:
Dr. Maximilian Müller
Institute of Geography | University of Cologne

Otto-Fischer-Str. 4 | 50674 Cologne
+49-(0)221-470 2241 | maximilian.mueller@uni-koeln.de
     
Deputy Speaker:
Prof. Dr. Martin Melles
Institute of Geology and Mineralogy | University of Cologne

Zülpicher Str. 49a | 50674 Cologne
+49-(0)221-470 2262 | mmelles@uni-koeln.de
   
© 2017 CRC1211 - Earth - Evolution at the Dry Limit


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