Geomorphology

R. Hoinkis, P. Houben, J. Wunderlich

Geophysics

C. Salat, M. Felber, A. Junge

Geology

R. Mediavilla López (IGME), J.I. Santisteban Navarro (UCM), G. Kowalczyk

Cartography & data

ICV

Financial support: This research project including 2 PhD positions is funded by the Deutsche Forschungsgemeinschaft (DFG).

Project affiliation: IGBP - PAGES LUCIFS initiative

Motivation, objectives

The current status of Mediterranean environments is like a palimpsest that is inherited from a continuous history of past environmental changes. The interaction of  long-term tectonic movements, climate change and human impact control large-scale sediment detachment, delivery and deposition. Thereby, the environmental history of the Palancia catchment is characterized by severe impacts of human activities for 5000 years.

So far, a wealth of research about soil degradation, and sediment fluxes from slopes to streams and to the coastal zone has been dedicated to the qualitative effects of human activities in Mediterranean catchments.

However, data on the quantitative significance of human impact over time are still quite rare. There is also a need for studies that couple hinterland with coastal sediment flux and put the long-term processes of man-induced landscape change into a whole-watershed context.

Approach and methods

In order to gain new insights into quantities and timing of fluxes, long-term geomorphic effects, and non-linear and resilience system properties, our working goals focus on:

Quantitative approaches to geomorphology:

• Developing GIS-based sediment budgets for Holocene sediment production, transfer, and output (including coastal delta formation);
• Photogrammetry and field-based retrieval of quantified data about types, morphology, sedimentology, spatial distribution, and geometry of sinks in the Rio Palancia system;

Geophysical applications

• Development of a radar facies catalogue and a project-derived radarstratigraphy
• application of GPR and geoelectrical measurements;
• investigation of controls of electromagnetic wave propagation in sediments (comparative measurements of conductivity and dielectric constant);

Geochronological framework

• OSL, TIMS, radiocarbon
• specifying formation time, residence time, and degradation of relevant sediment budget components;
• evaluating river system sensitivity against the background of climate and land use change.

Publications

Salat, C., Junge, A., 2010. Dielectric permittivity of fine-grained fractions of soil samples from eastern Spain at 200 MHz. Geophysics 75, J1-J9.

Houben, P., Hoinkis, R., Santisteban, J.I., Salat, C., Mediavilla, R., 2011. Combining al-lostratigraphic and lithostratigraphic perspectives to compile subregional records of fluvial responsiveness: the case of the sustainably entrenching Palancia River water-shed (Mediterranean coast, NE Spain). Geomorphology, doi 10.1016/j.geomorph.2011.02.030.