Abstract
ABSTRACTA detailed geomorphological map at 1:25,000 scale is presented for the Valdegovía valley (Álava, Northern Spain), located at the central zone of the Basque-Cantabrian Basin. The map has been developed after several field surveys, with the aid of GIS techniques and high resolution digital terrain models (DTM) derived from LiDAR datasets. The high resolution LiDAR DTMs have revealed uncountable ground features and slope breaks that frequently are hidden by dense forests. Considering the tectonic control and the current sub-Mediterranean climate of the studied area, most landforms and deposits in the Valdegovía valley respond to lithostructural, gravitational, karstic, fluvial, and anthropogenic morphogenesis. We conclude that the geomorphological evolution of the Valdegovía valley has been strongly conditioned by a structural control related with two main NW-SE trending asymmetric folds.
Highlights
The Valdegovía valley (342 km2) is a sparsely populated rural area (4 people/ km2), which extends along the border of Álava and Burgos provinces (Northern Spain)
In order to fill this cartographic gap, we present a new geomorphological map with the aim of identifying the main landforms in the Valdegovía valley and, understanding their morphogenetical and morphostructural framework
High resolution LiDAR digital terrain models (DTM) combined with aerial photographs, topographic and thematic maps, DTMderived morphometrical data, GIS techniques and field observations, have allowed us to perform a detailed geomorphological map at 1: 25,000 scale of the Valdegovía valley
Summary
The Valdegovía valley (342 km2) is a sparsely populated rural area (4 people/ km2), which extends along the border of Álava and Burgos provinces (Northern Spain). It is characterized by a low-medium mountainous physiography (elevations range from 471 m a.s.l. to 1367 m a.s.l.), defined by a NW–SE trending ranges (Bóveda–Arcamo, Peña Lisa–Olvedo, Recuenco–Peña Gobea, and Anderejo–Árcena). It corresponds with the Omecillo and Purón sub-watersheds, located in the NW zone of the Ebro basin (see the altimetry and location sketch in the geomorphological map).
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