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Faculty of Biology, Chemistry & Earth Sciences

Chair of geomorphology - Professor Dr. Oliver Sass

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Overview
Sass_Oliver Prof. Oliver Sass
Sass_Oliver

Faculty of Biology, Chemistry & Earth Sciences
Chair of geomorphology


In my geomorphological research I deal with weathering processes on rock faces (trigger mechanisms and quantification of rockfall) as well as on architectural monuments. I am particularly interested in the role of rock moisture and its measurement. My second focus is the quantification of erosion, sediment transport and deposition in small catchments and the associated sediment balances. In addition, I am interested in human-environment relationships (e.g. forest fires, natural hazards, water use) and try to explore the possible cooperations with neighbouring sciences.

Five exemplary publications:

  • Rascher, E., Rindler, R., Sass, O. & Habersack, H. (2018): Impacts of gravel mining and renaturation measures on the sediment flux and budget in an alpine catchment (Johnsbach Valley, Austria). Geomorphology 318: 404-420.
  • Rode, M., Schnepfleitner, H. & Sass, O. (2016): Simulation of moisture content in alpine rock walls during freeze-thaw events. Earth surface processes and landforms 41: 1937–1950, DOI: 10.1002/esp.3961
  • Sass, O., Heel, M., Leistner, I., Stöger, F., Wetzel, K.-F. & Friedmann, A. (2012): Disturbance, geomorphic processes and regeneration of wildfire slopes in North Tyrol. Earth Surface Processes and Landforms 37 (8): 883–889.
  • Sass, O. & Viles, H.A. (2010): Wetting and drying of masonry walls:  2D-resistivity monitoring of driving rain experiments on historic stonework in Oxford, UK. Journal of Applied Geophysics 70: 72-83.
  • Sass, O. (2007): Bedrock detection and talus thickness assessment in the European Alps using geophysical methods. Journal of Applied Geophysics 62: 254-269.

Short CV:

  • Since 12/2018: Professorship for Geomorphology, University of Bayreuth
  • 10/2009 – 11/2018: Professorship for Physical Geography, University of Graz
  • 02/2008 – 09/2009: Lise-Meitner Stipend, Institute of Geography, Innsbruck
  • 02/2007 – 01/2008: Scientific assistant (Postdoc), Institute of Geography, University of Cologne
  • 07/2007: Habilitation (Physical Geography); thesis: "Thickness and Structure of Alpine Slope Sediments Derived from Geophysical Investigations"
  • 02/2005 – 05/2005: British Royal Society stipend: School of Geography and the Environment, University of Oxford
  • 05/2000 – 12/2006:  Research assistant (Postdoc), Institute of Geography, University of Augsburg
  • Aug. 1998 - Apr. 2000:  Extramural employment: expert on industrial waste deposits, Sakosta Euro Consult (Munich)
  • 07/1998: Graduation (Dr. rer. nat.); PhD thesis: "Die Steuerung von Steinschlagmenge und -verteilung durch Mikroklima, Gesteinsfeuchte und Gesteinseigenschaften im westlichen Karwendelgebirge"
  • 03/1995 – 02/1998: Praedoc assistant at the Institute of Geography, LMU Munich
Sass_Oliver

Faculty of Biology, Chemistry & Earth Sciences
Chair of geomorphology


  • Weathering and rockfall on alpine rockwalls
  • Weathering, rock moisture and salt distribution on cultural heritage sites
  • Alpine sediment budgets
  • Man-environment-interaction

Projects:

  • „Rock traffic lights“ Saxonian Switzerland – Moisture distribution on sandstone massifs (starting 2019)
  • RunSed-CC - Modelling future runoff and sediment transport in alpine torrents (Climate and Energy Funds Austria, 2017 – 2019)
  • TEMOS – Temperature, moisture and salt distribution and their role in the decay of the Uplistsikhe cave settlement, Georgia (2017 – 2020, PhD project)
  • Drivers of land use change and water pressure in the Tafilalt oasis, Morocco (2016 – 2019, PhD project)
  • Economic and Ethical Consequences of natural Hazards in Alpine Valleys (EE-Con) (Austrian Academy of Sciences, 2015 – 2018)

Completed Projects (in selection)

  • Rocking Alps – Rockfall and Weathering in the Eastern Alps (2012 – 2015, FWF)
  • Sedyn-X – Interdisciplinary sediment flux research in the Johnsbach valley, Styria (2013 – 2016, FWF)
  • ClimCatch – Impact of climate change on the sediment yield of alpine catchments (2012 – 2015, Climate and Energy Funds Austria)
Sass_Oliver

Faculty of Biology, Chemistry & Earth Sciences
Chair of geomorphology


Publications

2018

Rascher, Eric; Rindler, Rolf; Habersack, Helmut; Sass, Oliver
Impacts of gravel mining and renaturation measures on the sediment flux and budget in an alpine catchment (Johnsbach Valley, Austria)
in Geomorphology vol. 318 (2018) . - pp. 404-420
doi:10.1016/j.geomorph.2018.07.009 ...

Schnepfleitner, Harald; Rode, Matthias; Sass, Oliver
Validation of simulated temperature profiles at rock walls in the Eastern Alps (Dachstein)
in Permafrost and Periglacial Processes vol. 29 (2018) issue 1. - pp. 34-48
doi:10.1002/ppp.1962 ...

2017

Rascher, Eric; Sass, Oliver
Evaluating sediment dynamics in tributary trenches in an alpine catchment (Johnsbachtal, Austria) using multi-temporal terrestrial laser scanning
in Zeitschrift für Geomorphologie : Supplementary Issue vol. 61 (2017) issue 1. - pp. 27-52
doi:10.1127/zfg_suppl/2016/0358 ...

Sass, Oliver; Sarcletti, Sebastian
Patterns of long-term regeneration of forest fire slopes in the Northern European Alps : a logistic regression approach
in Geografiska Annaler : Series A, Physical Geography vol. 99 (2017) issue 1. - pp. 56-71
doi:10.1080/04353676.2016.1263131 ...

Seier, Gernot; Stangl, Johannes; Schöttl, Stefan; Sulzer, Wolfgang; Sass, Oliver
UAV and TLS for monitoring a creek in an alpine environment, Styria, Austria
in International Journal of Remote Sensing vol. 38 (2017) issue 8/10. - pp. 2903-2920
doi:10.1080/01431161.2016.1277045 ...

2016

Stangl, Johannes; Rascher, Eric; Sass, Oliver
Comparative analysis of sediment routing in two different alpine catchments
In: Beylich, Achim A. ; Dixon, John C. ; Zwolinski, Zbigniew(ed.): Source-to-sink fluxes in Undisturbed Cold Environments - Cambridge: Cambridge University Press, 2016. - pp. 364-377
doi:10.1017/CBO9781107705791.026 ...

Gingrich, Simone; Schmid, Martin; Dirnböck, Thomas; Dullinger, Iwona; Garstenauer, Rita; Gaube, Veronika; Haberl, Helmut; Kainz, Martin; Kreiner, Daniel; Mayer, Renate; Sass, Oliver; Stocker-Kiss, Andrea
Long-term socio-ecological research in practice : Lessons from inter-and transdisciplinary research in the Austrian Eisenwurzen
in Sustainability vol. 8 (2016) issue 8. - pp. No. 743
doi:10.3390/su8080743 ...

Schnepfleitner, Harald; Sass, Oliver; Fruhmann, Stefanie; Viles, Heather; Goudie, Andrew
A multi‐method investigation of temperature, moisture and salt dynamics in tafoni (Tafraoute, Morocco)
in Earth Surface Processes and Landforms vol. 41 (2016) issue 4. - pp. 473-485
doi:10.1002/esp.3838 ...

Rode, Matthias; Schnepfleitner, Harald; Sass, Oliver
Simulation of moisture content in alpine rockwalls during freeze-thaw events
in Earth Surface Processes and Landforms vol. 41 (2016) issue 13. - pp. 1937-1950
doi:10.1002/esp.3961 ...

Egartner, Isabel; Sass, Oliver
Using paper pulp poultices in the field and laboratory to analyse salt distribution in building limestones
in Heritage Science vol. 4 (2016) issue 1
doi:10.1186/s40494-016-0110-5 ...

2015

Sass, Oliver; Kloss, Stefanie
Distribution of macro charcoal from forest fires in shallow soils of the Northern Alps
in Journal of Soils and Sediments vol. 15 (2015) issue 4. - pp. 748-758
doi:10.1007/s11368-014-0954-9 ...

2014

Stiegler, Christian; Rode, Matthias; Sass, Oliver; Otto, Jan-Christoph
An undercooled scree slope detected by geophysical investigations in sporadic permafrost below 1000 m ASL, central Austria
in Permafrost and Periglacial Processes vol. 25 (2014) issue 3. - pp. 194-207
doi:10.1002/ppp.1813 ...

Glade, Thomas; Bell, Rainer; Dobesberger, Paul; Embleton-Hamann, Christine; Fromm, Reinhard; Fuchs, Sven; Hagen, Karl; Hübl, Johannes; Lieb, Gerhard; Otto, Jan-Christoph; Perzl, Frank; Peticzka, Robert; Prager, Christoph; Samimi, Cyrus; Sass, Oliver; Schöner, Wolfgang; Schröter, Dagmar; Schrott, Lothar; Zangerl, Christian; Zeidler, Antonia
Der Einfluss des Klimawandels auf die Reliefsphäre
In: Kromp-Kolb, Helga(ed.): Österreichischer Sachstandsbericht Klimawandel 2014 = Austrian Assessment Report 2014 (AAR14): Austrian Panel on Climate Change (APCC) - Wien: Verlag der Österreichischen Akademie der Wissenschaften, 2014. - pp. 557-600
http://austriaca.at/7699-2

Malowerschnig, Bodo; Sass, Oliver
Long-term vegetation development on a wildfire slope in Innerzwain (Styria, Austria)
in Journal of Forestry Research vol. 25 (2014) issue 1. - pp. 103-111
doi:10.1007/s11676-014-0435-4 ...

Arpaci, Alexander; Malowerschnig, Bodo; Sass, Oliver; Vacik, Harald
Using multi variate data mining techniques for estimating fire susceptibility of Tyrolean forests
in Applied Geography vol. 53 (2014) . - pp. 258-270
doi:10.1016/j.apgeog.2014.05.015 ...

2013

Strasser, Ulrich; Marke, Thomas; Sass, Oliver; Birk, S.; Winkler, Gerfried
John’s creek valley : a mountainous catchment for long-term interdisciplinary human-environment system research in Upper Styria (Austria)
in Environmental Earth Sciences vol. 69 (2013) issue 2. - pp. 695-705
doi:10.1007/s12665-013-2318-y ...

2012

Bremer, Magnus; Sass, Oliver
Combining airborne and terrestrial laser scanning for quantifying erosion and deposition by a debris flow event
in Geomorphology vol. 138 (2012) issue 1. - pp. 49-60
doi:10.1016/j.geomorph.2011.08.024 ...

Sass, Oliver; Heel, Michael; Leistner, Iris; Stöger, Florence; Wetzel, Karl‐Friedrich; Friedmann, Arne
Disturbance, geomorphic processes and recovery of wildfire slopes in North Tyrol
in Earth Surface Processes and Landforms vol. 37 (2012) issue 8. - pp. 883-894
doi:10.1002/esp.3221 ...

Sass, Oliver; Haas, Florian; Schimmer, Christoph; Heel, Michael; Bremer, Magnus; Stöger, Florence; Wetzel, Karl‐Friedrich
Impact of forest fires on geomorphic processes in the Tyrolean Limestone Alps
in Geografiska Annaler : Series A, Physical Geography vol. 94 (2012) issue 1. - pp. 117-133
doi:10.1111/j.1468-0459.2012.00452.x ...

Sass, Oliver; Oberlechner, Martin
Is climate change causing increased rockfall frequency in Austria?
in Natural Hazards and Earth System Sciences vol. 12 (2012) issue 11. - pp. 3209-3216
doi:10.5194/nhess-12-3209-2012 ...

Kloss, Stefanie; Sass, Oliver; Geitner, Clemens; Prietzel, Jörg
Soil properties and charcoal dynamics of burnt soils in the Tyrolean Limestone Alps
in Catena vol. 99 (2012) . - pp. 75-82
doi:10.1016/j.catena.2012.07.011 ...

2011

Lukas, Sven; Sass, Oliver
The formation of Alpine lateral moraines inferred from sedimentology and radar reflection patterns : a case study from Gornergletscher, Switzerland
in Special Publications / Geological Society London vol. 354 (2011) issue 1. - pp. 77-92
doi:10.1144/SP354.5 ...

2010

Sass, Oliver; Friedmann, Arne; Haselwanter, G.; Wetzel, Karl-Friedrich
Investigating thickness and internal structure of alpine mires using conventional and geophysical techniques
in Catena vol. 80 (2010) issue 3. - pp. 195-203
doi:10.1016/j.catena.2009.11.006 ...

Sass, Oliver; Heel, M.; Hoinkis, R.; Wetzel, Karl-Friedrich
A six-year record of debris transport by avalanches on a wildfire slope (Arnspitze, Tyrol)
in Zeitschrift für Geomorphologie vol. 54 (2010) issue 2. - pp. 181-193
doi:10.1127/0372-8854/2010/0054-0009 ...

Sass, Oliver
Spatial and temporal patterns of talus activity : a lichenometric approach in the Stubaier Alps, Austria
in Geografiska Annaler : Series A, Physical Geography vol. 92 (2010) issue 3. - pp. 375-391
doi:10.1111/j.1468-0459.2010.00402.x ...

Sass, Oliver; Viles, Heather
Two-dimensional resistivity surveys of the moisture content of historic limestone walls in Oxford, UK : implications for understanding catastrophic stone deterioration
in Special publication / Geological Society London vol. 331 (2010) . - pp. 237-249
doi:10.1144/SP331.22 ...

Sass, Oliver; Viles, Heather
Wetting and drying of masonry walls : 2D-resistivity monitoring of driving rain experiments on historic stonework in Oxford, UK
in Journal of Applied Geophysics vol. 70 (2010) issue 1. - pp. 72-83
doi:10.1016/j.jappgeo.2009.11.006 ...

2008

Schrott, Lothar; Sass, Oliver
Application of field geophysics in geomorphology : advances and limitations exemplified by case studies
in Geomorphology vol. 93 (2008) issue 1-2. - pp. 55-73
doi:10.1016/j.geomorph.2006.12.024 ...

Sass, Oliver; Bell, Rainer; Glade, Thomas
Comparison of GPR, 2D-resistivity and traditional techniques for the subsurface exploration of the Öschingen landslide, Swabian Alb (Germany)
in Geomorphology vol. 93 (2008) issue 1-2. - pp. 89-103
doi:10.1016/j.geomorph.2006.12.019 ...

Sass, Oliver
The use of GPR in determining talus thickness and talus structure
In: Hauck, Christian ; Kneisel, Christof(ed.): Applied Geophysics in Periglacial Environments - Cambridge: Cambridge University Press, 2008. - pp. 165-171
doi:10.1017/CBO9780511535628.012 ...

2007

Sass, Oliver
Bedrock detection and talus thickness assessment in the European Alps using geophysical methods
in Journal of Applied Geophysics vol. 62 (2007) issue 3. - pp. 254-269
doi:10.1016/j.jappgeo.2006.12.003 ...

Sass, Oliver; Krautblatter, Michael
Debris flow-dominated and rockfall-dominated talus slopes : Genetic models derived from GPR measurements
in Geomorphology vol. 86 (2007) issue 1-2. - pp. 176-192
doi:10.1016/j.geomorph.2006.08.012 ...

Sass, Oliver; Krautblatter, M.; Morche, David
Rapid lake infill following major rockfall (bergsturz) events revealed by ground-penetrating radar (GPR) measurements, Reintal, German Alps
in The Holocene vol. 17 (2007) issue 7. - pp. 965-976
doi:10.1177/0959683607082412 ...

2006

Otto, Jan-Christoph; Sass, Oliver
Comparing geophysical methods for talus slope investigations in the Turtmann valley (Swiss Alps)
in Geomorphology vol. 76 (2006) issue 3-4. - pp. 257-272
doi:10.1016/j.geomorph.2005.11.008 ...

Sass, Oliver
Determination of the internal structure of alpine talus deposits using different geophysical methods (Lechtaler Alps, Austria)
in Geomorphology vol. 80 (2006) issue 1-2. - pp. 45-58
doi:10.1016/j.geomorph.2005.09.006 ...

Sass, Oliver
Geophysical investigation of a relict talus slope in the Bavarian Alps, Germany
in Zeitschrift für Geomorphologie vol. 50 (2006) issue 4. - pp. 447-463

Sass, Oliver; Viles, Heather
How wet are these walls? Testing a novel technique for measuring moisture in ruined walls
in Journal of Cultural Heritage vol. 7 (2006) issue 4. - pp. 257-263
doi:10.1016/j.culher.2006.08.001 ...

Sass, Oliver; Wetzel, Karl-Friedrich; Friedmann, Arne
Landscape dynamics of sub-alpine forest fire slopes in the Northern Alps - preliminary results
in Zeitschrift für Geomorphologie : Supplement vol. 142 (2006) . - pp. 207-227

Wetzel, Karl-Friedrich; Sass, Oliver; von Restorff, Cai
Mass Movement Processes in Unconsolidated Pleistocene Sediments : A Multi-Method Investigation at the "Hochgraben"(Jenbach/Upper Bavaria)
in Erdkunde vol. 60 (2006) issue 3. - pp. 246-260
doi:10.3112/erdkunde.2006.03.04 ...

2005

Sass, Oliver
Rock moisture measurements : techniques, results, and implications for weathering
in Earth Surface Processes and Landforms vol. 30 (2005) issue 3. - pp. 359-374
doi:10.1002/esp.1214 ...

Sass, Oliver
Spatial patterns of rockfall intensity in the northern Alps
in Zeitschrift für Geomorphologie : Supplement vol. 138 (2005) . - pp. 51-65

Sass, Oliver
Temporal variability of rockfall in the Bavarian Alps, Germany
in Arctic, Antarctic, and Alpine Research vol. 37 (2005) issue 4. - pp. 564-573
doi:10.1657/1523-0430(2005)037[0564:TVORIT]2.0.CO; ...

2004

Sass, Oliver
Rock moisture fluctuations during freeze-thaw cycles : Preliminary results from electrical resistivity measurements
in Polar Geography vol. 28 (2004) issue 1. - pp. 13-31
doi:10.1080/789610157 ...

2003

Sass, Oliver
Moisture distribution in rockwalls derived from 2D-resistivity measurements
in Zeitschrift für Geomorphologie : Supplement vol. 132 (2003) . - pp. 51-69

2001

Sass, Oliver; Wollny, Klaus
Investigations regarding Alpine talus slopes using ground‐penetrating radar (GPR) in the Bavarian Alps, Germany
in Earth Surface Processes and Landforms vol. 26 (2001) issue 10. - pp. 1071-1086
doi:10.1002/esp.254 ...

Sass_Oliver

Faculty of Biology, Chemistry & Earth Sciences
Chair of geomorphology


Prof. Oliver Sass

Room: 139, GEO II

Phone: +49 921 552265
E-mail: oliver.sass@uni-bayreuth.de

Consultation: by appointment

Webmaster: Manfred Fischer

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