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Título: Holocene landscape evolution in the Baza Basin (SE-Spain) as indicated by fluvial dynamics of the Galera River.
Autoría: Wolf, D
García-Tortosa, FJ
Richter, C
Dabkowski, J
Roettig, CB
Faust, D
Resumen: The concrete relationships between fluvial system behavior and potential influencing factors that are, among others, climate forcing, tectonics, and human activity are a key issue in geomorphological research. In this regard, especially the Iberian Peninsula is an area of great interest because its landscapes are highly sensitive towards climate changes and anthropogenic impact. Nowadays, the Iberian Peninsula reveals a strongly heterogeneous and spatially fragmented climate configuration. This should give rise to disparate behavior of fluvial geomorphic systems considering that climate is generally assumed the most important trigger of fluvial dynamics. In fact, river systems located in more humid and more arid regions in Iberia often reveal deviating patterns of Holocene floodplain evolution. This raises the question of whether these patterns were actually caused by a different climate history or if, alternatively, other factors might have been responsible. In this study, we investigated the Holocene floodplain evolution of the Galera River that is located in the upland of Eastern Andalucía (SE-Spain) named Baza Basin. A combination of detailed stratigraphic profile logging and closemeshed radiocarbon dating revealed that Holocene river dynamics generally followed the regional climatic development, which proves the Galera floodplain record to be a valuable archive of Holocene landscape evolution. However, we demonstrate that fluvial dynamics of the Galera system are hardly comparable to other river systems in Iberia even if the climate evolution was not so different. Our results suggest that in river systems with different basic conditions and catchment-specific configurations, similar climatic influences may lead to deviating fluvial process regimes (divergence phenomenon) because of substantial imprints of other parameters such as geological substratum, relief composition, tectonics, or human interventions.
Palabras clave: Western mediterranean
Granada geopark
Tufa deposits
River incision
Divergence phenomenon
Fecha: 2021
Patrocinador: We greatly acknowledge the German Research Foundation (DFG) for funding this project (FA 239/22-1 and FA 239/24-1). Moreover, we thank the Spanish Ministry of Science, Innovation and Universities for funding (TASCUB - RTI2018-100737-B-I00). We thank B. Winkler and S. Gerstenhauer (Technische Universit¨at Dresden) for lab work, and F. Schneider (Georg-August-Universit¨at G¨ottingen) and P. Baumgart for assistance with fieldwork. Furthermore, we would like to thank J. I. Santisteban (Complutense University of Madrid) and J. V´azquez-Navarro (Universidad Aut´onoma de Madrid) for fruitful discussions in the field. Open Access Funding by the Publication Fund of the TU Dresden.
Editorial: Elsevier
Citación: Wolf, D., García-Tortosa, F. J., Richter, C., Dabkowski, J., Roettig, C. B., & Faust, D. (2021). Holocene landscape evolution in the Baza Basin (SE-Spain) as indicated by fluvial dynamics of the Galera River. Quaternary Science Advances, 4, 100030.
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