Knickpoints and knickzones extracted from the Apurimac and Urubamba watersheds (Abancay Deflection, Southern Peru)

The highly-elevated and flat Altiplano in Peru is a remarkable landscape feature in such metastable geomorphologic context. However, the northern edge of the Peruvian Altiplano, namely the Abancay Deflection, is widely dissected and incised by two hydrographic networks belonging to the Apurimac and Urubamba rivers draining toward Amazonia crossing through the Eastern Cordillera. Exploring the Abancay Deflection region with geomorphologic tools permits to discuss the paleo-landscape context and the active tectonic settings of this area. This dataset is composed of knickpoints and knickzones locations extracted in the Apurimac and Urubamba watersheds. We extracted knickpoints in the Abancay deflection using the Matlab module ChiProfiler (Gallen & Wegmann, 2017) implemented in Topotoolbox v.2 (Schwanghart & Scherler, 2014). We analyzed 752 rivers for the Urubamba watershed and 553 for the Apurimac watershed. For each river, we manually selected the knickpoints. […]

位于秘鲁的高海拔平原地带，以其在动态稳定的地貌背景下的显著特征而著称。然而，秘鲁高原的北部边缘，即阿班凯折返地带，却因阿普里马克河和乌卢班巴河两条水文网络的大规模切割而呈现出广泛的分水岭。运用地貌学工具对阿班凯折返地带进行探索，有助于探讨该地区的古地貌背景及其活跃的构造环境。本数据集由阿普里马克河和乌卢班巴河流域中提取的急流点和急流带位置构成。我们利用Matlab模块ChiProfiler（Gallen & Wegmann，2017）在Topotoolbox v.2（Schwanghart & Scherler，2014）中实现的技术，对阿班凯折返地带进行了急流点的提取。针对乌卢班巴河流域，我们分析了752条河流；对于阿普里马克河流域，我们分析了553条河流。对于每条河流，我们均进行了人工选取急流点的操作。