EGU21-7120
https://doi.org/10.5194/egusphere-egu21-7120
EGU General Assembly 2021
© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.

Cosmolian: High-resolution Integrated OSL and CN modelling Program for Sand Transportation in Eolian Realms (HIPSTER)

Shlomy Vainer1,3 and Yoav Ben Dor2
Shlomy Vainer and Yoav Ben Dor
  • 1Institute of Earth Surface Dynamics, University of Lausanne, Switzerland (svainer@unil.ch)
  • 2Institute of Earth Sciences, The Hebrew University of Jerusalem, Jerusalem 91904, Israel
  • 3CNRS - IRD - INRAE-Univ. Aix-Marseille, Aix-en-Provence, France

The extensivity of sand dunes in continental interiors makes the understating of their morphodynamical properties valuable for palaeoenvironmental reconstructions and the interpretation of landscape evolution. Nevertheless, the study of aeolian landscape development at the million-years timescale is hampered by the complex interaction of factors determining dune migration and the inherently self-destructive nature of their chronostratigraphy, thus limiting the applicability of traditional luminescence-based dating methods for configuring processes beyond ~300 Ka. In this study, we present a standalone program that simulates aeolian transport based on luminescence-derived chronologies coupled with numerical modelling of cosmogenic nuclides accumulation. This integrative approach reveals ancient phases of sand irruption and provides a data-based scheme facilitating the morphodynamical study of aeolian processes over multiple timescales. We present a case study of the program application by analyzing data from the Australian Simpson Desert, unfolding several phases of aeolian vitality since the late Pliocene. The synchronicity of the results with drastic changes in environmental settings exemplifies the applicability of process-based modelling in constructing a timeframe of key landscape evolution events in arid environments by studying aeolian landforms. Finally, the relationships between model parameters used to determine environmental settings on sand migration patterns make the program a powerful tool to further investigating triggers and mechanisms of aeolian processes.

How to cite: Vainer, S. and Ben Dor, Y.: Cosmolian: High-resolution Integrated OSL and CN modelling Program for Sand Transportation in Eolian Realms (HIPSTER), EGU General Assembly 2021, online, 19–30 Apr 2021, EGU21-7120, https://doi.org/10.5194/egusphere-egu21-7120, 2021.

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