Persona:
García Esteban, Roberto

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Dirección de correo electrónico
rgarcia@geo.uned.es
ORCID
0000-0002-9683-8777
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Proyectos de investigación
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Apellidos
García Esteban
Nombre de pila
Roberto
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2002 - 200912020 - 20252
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Tipo: journal article ×

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Mostrando 1 - 3 de 3
  • Miniatura
    Publicación
    Los paisajes de modelado glaciar del Lake District (Inglaterra Noroccidental)
    (Servicio de Publicaciones de la Universidad de Oviedo, 2002-03-01) García Esteban, Roberto
  • Miniatura
    Publicación
    Surface Ice Velocity near the Terminus of Grey Glacier in the Southern Patagonian Icefield, Based on Direct Field Measurements
    (MDPI, 2025-11-29) García Esteban, Roberto
    Glacier mass balance and ice flow dynamics, strongly influenced by climatic variability, topography, and geological–structural controls, can be precisely characterized through in situ GPS measurements of surface ice velocity, though such data remain limited due to logistical challenges in field acquisition. This study presents direct measurements of surface ice velocity on Grey Glacier, a major outlet glacier of the Southern Patagonian Icefield (SPI) in Chile. Ice flow was monitored over a one-week period in late 2002 by tracking the displacement of six stakes installed on the glacier surface. The resulting velocity data reveal spatial patterns of surface flow that provide significant information for the comparison and validation of remote sensing observations, which is particularly relevant considering that the ice mass from which the data were collected has since disappeared due to glacier retreat. The combined use of ground-based and remote sensing methods is essential for advancing our understanding of glacier motion and behavior, particularly in the context of climate forcing.
  • Miniatura
    Publicación
    Summit typology and detailed geomorphological landscape units mapping through the application of direct and indirect methods. A case study in the Sierra de Guadarrama National Park, Spain
    (Asociación Española para el Estudio del Cuaternario (AEQUA) y la Sociedad Española de Geomorfología (SEG), 2022-06-27) García Esteban, Roberto
    This paper analyzes the topography and the geomorphological characteristics of the central sector of the Sierra de Guadarrama (Spanish Central Range) from the point of view of the geomorphological landscape. Using Digital Elevation Models (DEM) and topographic maps, the aim is to supplement conventional geomorphological analysis by applying indirect morphometric methods for the detailed study of landforms through topographic analysis in order to obtain maps of diverse morphometric parameters, resulting in an exhaustive study, which is useful and revealing both in terms of geomorphology and of landscape. The morphometric maps obtained for each variable, such as the density of the dissection, the depth of the dissection and the energy of the relief, are overlaid on the derived maps from the DEM using Geographical Information System (GIS). Their analysis, using both indirect and direct methods during several field studies, in combination with the geology and the geomorphology of the study area, allows a more accurate study of the unit delimitation of the geomorphological landscape at a detailed scale. In a mountainous environment with smooth and apparently homogeneous summits, this detailed study of the geomorphological landscape shows the existence of different types of summits. The results are presented as a typology of summits and a map synthesizing the detailed units of geomorphological landscape that can be found in the Sierra de Guadarrama National Park (Central Spain).