Articles | Volume 4, issue 2
https://doi.org/10.5194/gchron-4-691-2022
https://doi.org/10.5194/gchron-4-691-2022
Short communication/technical note
 | 
14 Dec 2022
Short communication/technical note |  | 14 Dec 2022

Technical note: Evaluating a geographical information system (GIS)-based approach for determining topographic shielding factors in cosmic-ray exposure dating

Felix Martin Hofmann

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Cited articles

Balco, G.: Topographic shielding calculator, http://stoneage.ice-d.org/math/skyline/skyline_in.html (last access: 23 February 2021), 2018. 
Balco, G., Stone, J. O., Lifton, N. A., and Dunai, T. J.: A complete and easily accessible means of calculating surface exposure ages or erosion rates from 10Be and 26Al measurements, Quat. Geochronol., 3, 174–195, https://doi.org/10.1016/j.quageo.2007.12.001, 2008. 
Baroni, C., Gennaro, S., Salvatore, M. C., Ivy-Ochs, S., Christl, M., Cerrato, R., and Orombelli, G.: Last Lateglacial glacier advance in the Gran Paradiso Group reveals relatively drier climatic conditions established in the Western Alps since at least the Younger Dryas, Quaternary Sci. Rev., 255, 106815, https://doi.org/10.1016/j.quascirev.2021.106815, 2021. 
Barr, I. D. and Lovell, H.: A review of topographic controls on moraine distribution, Geomorphology, 226, 44–64, https://doi.org/10.1016/j.geomorph.2014.07.030, 2014. 
Boxleitner, M., Ivy-Ochs, S., Egli, M., Brandova, D., Christl, M., Dahms, D., and Maisch, M.: The 10Be deglaciation chronology of the Göschenertal, central Swiss Alps, and new insights into the Göschenen Cold Phases, Boreas, 48, 867–878, https://doi.org/10.1111/bor.12394, 2019. 
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Short summary
If topographical obstructions are present in the surroundings of sampling sites, exposure ages of rock surfaces need to be corrected. A toolbox for the ESRI ArcGIS software allows for quantifying topographic shielding with a digital elevation model, but it has only been validated with few field data. In this study, the output of the toolbox is evaluated with a more extensive dataset. If suitable elevation data are chosen, the toolbox provides a sound approach to determine topographic shielding.