108506 20211122153226.0 doi 10.1016/j.jsames.2020.103028 sideral 122554 ART-2020-122554 eng Peña-Monné, J.L. Universidad de Zaragoza (orcid)0000-0003-4067-8222 Geomorphological dynamics and human interactions in a semiarid valley in Northwestern Argentina: The Cafayate depression (Salta Province) 2020 The aim of this study was to record the changes in the Cafayate region, Northwestern Argentina, over the last 50 years (1969–2019), with a focus on fluvial and dune systems, together with human activity. The multi-temporal analysis of different kinds of remote sensor images and field surveys allowed us to establish that the final section of the Santa María River shows a meandering channel whose arrangement and morphology have substantially changed since 1969. The Santa María River has moved from a northern position in 1969 to the current location, giving rise to a shortening in the channel length from 11756 m to 8217 m, increasing its gradient from 0.10% (1969) to 0.14% (2019), with its sinuosity index falling from 2.85 to 2, although the lateral erosion of the channel and the meanders have remained very active. The floodplain supplies sands to feed the aeolian dynamics through a close cycle that favors the development of large dune fields, especially in the river stretches where there is transversal wind direction. Moreover, the changes in land use have negatively impacted on the fluvio-aeolian dynamics of the system. Access copy available to the general public Unrestricted info:eu-repo/grantAgreement/ES/DGA/H07 info:eu-repo/grantAgreement/ES/UZ/IUCA info:eu-repo/semantics/openAccess All rights reserved http://www.europeana.eu/rights/rr-f/ 2.093 2020 GEOSCIENCES, MULTIDISCIPLINARY 127 / 198 = 0.641 2020 Q3 T2 0.712 2020 Geology 2020 Q2 Earth-Surface Processes 2020 Q2 info:eu-repo/semantics/article info:eu-repo/semantics/acceptedVersion Sampietro-Vattuone, M.M. 3006 430 Universidad de Zaragoza Dpto. Geograf. Ordenac.Territ. Área Geografía Física (2020), 103028 [14 pp] J. South Am. earth sci. JOURNAL OF SOUTH AMERICAN EARTH SCIENCES 0895-9811 1668628 http://zaguan.unizar.es/record/108506/files/texto_completo.pdf Postprint 2580704 http://zaguan.unizar.es/record/108506/files/texto_completo.jpg?subformat=icon icon Postprint oai:zaguan.unizar.es:108506 articulos driver 2021-11-22-14:00:40 ARTICLE