Agostina Ortiz
Research Assistant
PhD-Student
Contact:
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Tel.: (+49) - (0)228/60670
Fax: (+49) - (0)228/73-9099
Department of Geography
Meckenheimer Allee 155
D-53115 Bonn
Germany
Room: 156
Office hours: by arrangement
PhD-Thesis: “Estudio Geofísico del permafrost Andino en taludes y laderas de bloques en la Cuenca de Agua Negra, Provincia de San Juan, República Argentina- Deteccion, Distribucion y Significado hidrologico-"
My PhD project aims to contribute to the knowledge of hydrogeology from the detection, distribution and characterization of mountain permafrost in the Agua Negra Basin in San Juan Province (Argentina). For its study I propose the application of 3 geophysical techniques: Seismic Refraction Tomography, Resistive Electrical Tomography and GPR (Ground Penetrating Radar) as well as a deep geomorphological analysis in two dominant periglacial landforms, taluses and block slopes. This study will make it possible to determine with great precision the distribution of permafrost in the Arid Andes of Argentina, as well as the influence on the permafrost of said landforms, climatic, lithological and topographic conditions. This characterization will allow a more precise estimate of the solid-state water reserve contained in the aforementioned periglacial geoforms. The doctoral thesis is part of the DFG-funded project "Spatial occurrence and hydrological significance of Andean permafrost, Agua Negra, Argentina (HyPerm)".
- Research interests:
• High mountain systems and geophysics
• High mountain permafrost; periglacial and paraglacial processes and their interactions
• Surface morphology, internal structure and composition of taluses and blockslopes
• Application of geophysical methodologies (Electrical Resistivity Tomography, Refraction Seismic Tomography, Ground Penetrating Radar) to determine the geomorphic and hydrological significance of high mountain permafrost of said periglacial landforms
• Water storage capacities and hydrologic relevance of taluses and blockslopes in the Dry Andes of Argentina
- Publications:
CHRISTIANSEN, R., CLAVEL, F., GONZALEZ, M., GARCIA H., ORTIZ D.A., ARIZA J.P., MARTINEZ, P., WOHNLICH S. (2021). Low-enthalpy geothermal energy resources in the Central Andes of Argentina: A case study of the Pismanta system. Renewable Energy. 177, 1234-1252.
VILLARROEL, C., ORTIZ, D.A., FORTE, A.P., IMHOF, A. and LOPEZ, A. (2021). Internal structure of a large-sized, complex and multi-lobate rock glacier analyzed through electrical resistivity tomography in the semiarid Andes. Permafrost and Periglacial Processes. (PPP2132) DOI: 10.1002/ppp.2132
VILLARROEL, C., FORTE, A.P., ORTIZ, D., TAMBURINI BELIVEAU, G. and GUELL, A. (2020). Active layer and permafrost thickness in rock glaciers derived from geophysical methods in semiarid Andes of Argentina. Geomorphology. 365, 107249. Doi: https://doi.org/10.1016/j.geomorph.2020.107249
- Teaching:
• Teaching in “Geophysics applied to geotechnics", Geophysics Master Program. National University of San Juan. 2019-2021.
• Teaching in “Electrical Prospecting", Geophysics Master Program. National University of San Juan. 2019-2021.
• Teaching assistant in Applied Geology II" Principles of sedimentary basins analysis", Geophysics Master Program. National University of San Juan. 2016.
• Teaching in Analytic Geometry, Geophysics Master Program. National University of San Juan. 2015-2019.
• Teaching assistant in Earth´s Physics, Geophysics Master Program. National University of San Juan. 2015.
