Dr. Christof Sager

Publikationen

Schwarze, P; Igel, J.; Arrué, B. B.; Sager, C.; Airo, A and Feige, J. (2025) Mapping and Modelling of Sand Wedge Polygons in Saline Alluvial Sediments in the Atacama Desert Using Ground-Penetrating Radar. 13th International Workshop on Advanced Ground Penetrating Radar (IWAGPR), Thessaloniki, Greece, 2025, pp. 1-4; doi: 10.1109/IWAGPR65621.2025.11109047

Arens F. L., Uhl J., Schmitt-Kopplin P., Karger C., Mangelsdorf K., Sager, C., Airo A., Valenzuela B., Zamorano P. & Schulze-Makuch D. (2025) Exploring organic compound preservation through long-term in situ experiments in the Atacama desert and the relevance for Mars. Sci Rep 15, 29957;  doi: 10.1038/s41598-025-16197-w

Arens, F. L., Airo, A., Sager, C., Grossart, H.-P., Mangelsdorf, K., Meckenstock, R. U., Pannekens, M., Schmitt-Kopplin, P., Uhl, J., Valenzuela, B., Zamorano, P., Zoccarato, L., and Schulze-Makuch, D. (2024) Microbial response to deliquescence of nitrate-rich soils in the hyperarid Atacama Desert. Biogeosciences, 21, 5305–5320, doi: 10.5194/bg-21-5305-2024

Arens, F. L.; Feige, J.; Airo, A.; Sager, C.; Hecht, L.; Horstmann, L.; Kaufmann, F. E. D.; Lachner, J.; Neumann, T.; Nowaczyk, N.; Schiperski, F.; Steier, P.; Stoll, A.; Struck, U.; Valenzuela, B.; von Blanckenburg, F.; Wittmann, H.; Wacker, L.; Wagner, D.; Zamorano, P.; Schulze-Makuch, D. (2024). Climate variability in a 3.8 Ma old sedimentary record from the hyperarid Atacama Desert. Global and Planetary Change, Volume 242, 104576, ISSN 0921-8181; doi: 10.1016/j.gloplacha.2024.104576

Sager, C., Airo, A., Mangelsdorf, K., Arens, F. L., Karger, C., & Schulze-Makuch, D. (2023). Habitability of Polygonal Soils in the Hyper-arid Atacama Desert after a Simulated Rain Experiment. Journal of Geophysical Research: Biogeosciences, 128, e2022JG007328; doi: 10.1029/2022JG007328

Sager, C., Airo, A., Arens, F.L., Schulze-Makuch, S. (2022) Eolian erosion of polygons in the Atacama Desert as a proxy for hyper-arid environments on Earth and beyond. Scientific Reports 12, 12394; doi: 10.1038/s41598-022-16404-y

Arens, F.L., Airo, A., Feige, J., Sager, C., Wiechert, U., Schulze-Makuch, D. (2021). Geochemical proxies for water-soil interactions in the hyperarid Atacama Desert, Chile. Catena, 206 (105531); doi:10.1016/j.catena.2021.105531 

Sager, C., Airo, A., Arens, F.L., Schulze-Makuch, S. (2021) New types of sand wedge polygons in the salt cemented soils in the hyper-arid Atacama Desert . Geomorphology, Volume 373; doi: 10.1016/j.geomorph.2020.107481

Sager, C., Airo, A., Arens, F.L.,Rabethge, C., Schulze-Makuch, D. (2020) New types of boulder accumulations in the hyper-arid Atacama Desert. Geomorphology, Volume 350; doi: 10.1016/j.geomorph.2019.106897

Projekte

ERC Projekt - NoSHADE

Aufgabenbereiche

• Wissenschaftlicher Mitarbeiter in der Abteilung Sonnensystem, Impakte & Meteoriten im ERC-Projekt NoSHADE
• Geochemische und sedimentologische Aufbereitung und Analyse von Boden- und Gesteinsproben
• Analyse von Mikrometeoriten und Spuren kosmischen Staubes aus Sedimenten der Atacamawüste
• Photogrammetie, Fernerkundung und morphometrische Untersuchung sedimentärer Ablagerungsräume in der Atacama Wüste

Forschung

Aktuell bin ich an diesem ERC-Projekt beteiligt:

NoSHADE (Novel perspectives on our Solar System History recorded in the Atacama Desert)

Publikationen (Auswahl)

Arens F. L., Uhl J., Schmitt-Kopplin P., Karger C., Mangelsdorf K., Sager, C., Airo A., Valenzuela B., Zamorano P. & Schulze-Makuch D. (2025) Exploring organic compound preservation through long-term in situ experiments in the Atacama desert and the relevance for Mars. Sci Rep 15, 29957 (2025). doi: 10.1038/s41598-025-16197-w

Arens, F. L.; Feige, J.; Airo, A.; Sager, C.; Hecht, L.; Horstmann, L.; Kaufmann, F. E. D.; Lachner, J.; Neumann, T.; Nowaczyk, N.; Schiperski, F.; Steier, P.; Stoll, A.; Struck, U.; Valenzuela, B.; von Blanckenburg, F.; Wittmann, H.; Wacker, L.; Wagner, D.; Zamorano, P.; Schulze-Makuch, D. (2024). Climate variability in a 3.8 Ma old sedimentary record from the hyperarid Atacama Desert. Global and Planetary Change, Volume 242, 104576, ISSN 0921-8181; doi: 10.1016/j.gloplacha.2024.104576

Sager, C., Airo, A., Mangelsdorf, K., Arens, F. L., Karger, C., & Schulze-Makuch, D. (2023). Habitability of Polygonal Soils in the Hyper-arid Atacama Desert after a Simulated Rain Experiment. Journal of Geophysical Research: Biogeosciences, 128, e2022JG007328; doi: 10.1029/2022JG007328

Sager, C., Airo, A., Arens, F.L., Schulze-Makuch, S. (2022) Eolian erosion of polygons in the Atacama Desert as a proxy for hyper-arid environments on Earth and beyond. Scientific Reports 12, 12394; doi: 10.1038/s41598-022-16404-y

Arens, F.L., Airo, A., Feige, J., Sager, C., Wiechert, U., Schulze-Makuch, D. (2021). Geochemical proxies for water-soil interactions in the hyperarid Atacama Desert, Chile. Catena, 206 (105531); doi:10.1016/j.catena.2021.105531 

Sager, C., Airo, A., Arens, F.L., Schulze-Makuch, S. (2021) New types of sand wedge polygons in the salt cemented soils in the hyper-arid Atacama Desert . Geomorphology, Volume 373; doi: 10.1016/j.geomorph.2020.107481

Sager, C., Airo, A., Arens, F.L.,Rabethge, C., Schulze-Makuch, D. (2020) New types of boulder accumulations in the hyper-arid Atacama Desert. Geomorphology, Volume 350; doi: 10.1016/j.geomorph.2019.106897