Juan de Dios Centeno Carrillo

Relieve y agua en regiones graníticas: un modelo cuantitativo con aplicaciones en la gestión del agua y la geodiversidad

Se estudian las relaciones entre aspectos geomorfologicos e hidrogeologicos de las regiones graniticas y, en especial, su influencia en el balance hidrico y su papel fundamental en la interaccion entre Geodiversidad y Biodiversidad. Partiendo de un modelo conceptual, se disena un modelo cuantitativo y se aplica en cuatro escenarios que difieren por el regimen de precipitaciones y por la proporcion superficial de regolito y roca fresca. [ABSTRACT] We explore the relationships between geomorphologic and hydrogeological aspects in granitic regions, and especially its influence on the water balance and its pivotal role in the interaction between Geodiversity and Biodiversity. Based on a conceptual model, a quantitative model is designed and applied in four scenarios that differ by rainfall distribution and the surface proportion of regolith and fresh rock.

Geomorphological map of the lower NW flank of the Hecates Tholus volcano, Mars (scale 1:100,000)

Hecates Tholus (centered at 32.1°N 150.2°E), is a shield volcano in the Elysium volcanic province, located in the Martian lowlands in the northern hemisphere. Images of this volcano acquired by the Context Camera (CTX) instrument on board NASAs Mars Reconnaissance Orbiter spacecraft show many glacial landforms that have gone unnoticed by previous authors. We present a geomorphological map of the lower northwestern flank of the Hecates Tholus volcano, at 1:100,000 scale, based on the use and analysis of CTX images with a resolution of 6 meters/pixel. The map is organized into a series of geomorphological units (surface cover) and elements (located at a point, along a line or distributed over an area) in order to provide a clearer understanding of the extent of glacial processes and the main dynamic element of this Martian glacial complex.