Antonia Oelke
Education
Diplom in Physics (2010) at Freie Universität Berlin. MSc thesis at Department of Geophysics under supervision of Dr. Stefan Buske (now at Freiberg University). Thesis title: 'Seismic Imaging of the Whataroa'98 Reflection Profile across the Alpine Fault, South Island, New Zealand '.
Current project with GeoSim (since 01.04.2011)
‘Reflection coefficients at hydraulic fractures’ at the Department of Geophysics, Freie Universität Berlin.
Supervisors: S. Shapiro and R. Kornhuber
Conference abstracts:
A. Oelke, S. Buske and S. Bannister, Seismic Imaging of the Alpine Fault, New Zealand, at Whataroa River. 14th International Symposium on "Deep Seismic Profiling of the Continents and their Margins", Cairns, Australia, 2010
A. Oelke, D. Alexandrov, I. Abakumov, V. Troyan, B.M. Kashtan and S.A. Shapiro, Reflection Coefficients at a Thin Fluid Layer as a Model of a Hydraulic Fracture. 73rd EAGE Conference & Exhibition incorporating SPE EUROPEC 2011 Vienna, Extended abstract, P353. 2011
Jana de Wiljes
Education
Diplom in Mathematics at Freie Universität Berlin. Thesis title: Adopting a Bayesian framework to multidimensional cluster modeling
Current project with GeoSim (since 01.04.2011)
‘Discrete-continuous non-stationary methods of time series analysis of coupled economics and climate processes’ at the Institute of Mathematics, Department of Mathematics and Computer Sciences, Freie Universtät Berlin
Supervisors: Prof. Dr.-Ing. Rupert Klein, Prof. Dr. Illia Horenko, Prof. Dr. Maik Thomas
My current work aims at extending the existent methods of time series analysis towards the hierarchical non-stationary and non-homogenous space-time clustering of geophysical data, with a special emphasis on the sea ice coverage data. The main mathematical target is to develop a data-based percolation model for the arctic ice dynamics using the information gained from the analysis of spatiotemporal arctic satellite data. The main geophysical target of my research will be to use this stochastic model to statistically investigate the influence of various global and local climate factors on the dynamics of the ice cover.
Matthias Munz
Education
Geoecology at Potsdam University. Majors: Modelling in Geoecology und Hydrology. Diploma thesis (2011): "Sand box experiments to evaluate the influence of subsurface temperature probe installation on temperature based water flux calculation"
Current project with GeoSim (since 01.04.2011)
‘Coupled water and heat transport modelling at the surface water-groundwater interface - from a highly instrumented stream stretch to the entire stream’ at the Research Group “Water and Matter Transport in Complex Landscapes”, Institute of Earth and Environmental Science, Potsdam University.
Supervisors: Prof. Dr. Sascha Oswald, Prof. Dr. Ralf Kornhuber
Surface waters and groundwater are the interconnected parts of stream catchments. They are coupled by variable water, solute and heat exchange processes through streambed sediments. In consequence there is an increasing multi-disciplinary interest in investigating hydrological, biogeochemical and ecological processes at the direct interface between river and aquifer (hyporheic zone), because they affect ecosystem functioning in natural and human impacted water resources systems and water quality as well as water discharges.
The goal of this research project will be to simulate hyporheic zone temperature patterns to advance the understanding of spatially and temporally highly variable thermal exchange between rivers and groundwater, using existing numerical models -HydroGeoSphere. Received subsurface temperature patterns will be used to delineate river aquifer interaction zones and could be linked to microbial activity attached to sediments and to nutrient cycles in the subsurface as these ecological and biogeochemical processes are temperature sensitive.
Publications
M. Munz, S. Krause, C. Tecklenburg, A. Binley 2011. Reducing monitoring gaps at the aquifer–river interface by modelling groundwater–surface water exchange flow patterns. Hydrological Processes. Published online: 12 May 2011. DOI: 10.1002/hyp.8080.
Nico Becker
Education
BSc in Meteorology at FU Berlin (2008), Thesis: Vergleich verschiedener Konvektionsparametrisierungen anhand von Niederschlägen in Ostafrika
MSc in Meteorology at FU Berlin (2011), Thesis: Extreme Windereignisse im Mittelmeerraum in regionalen Simulationen mit verschiedener Auflösung
Current project with GeoSim (since 01.04.2011)
'Error propagation in regional climate models' at the Institute of Meteorology, FU Berlin.
Supervisors: Prof. Dr. Uwe Ulbrich, Prof. Dr. Rupert Klein
Regional climate modeling has evolved into an important part of climate research. The concept of adding regional details to large scale data - also called dynamical downscaling - implies certain sources of errors, for example the different resolutions at the model boundaries. These errors have to be revealed and quantified, to improve regional model output and its scientific interpretation.
Olga Zakharova
Education
Bsc (2005) and MSc (2007) in Plasma Physics at Kazakh National University named after al-Farabi.
Current project with GeoSim (since 01.04.2011)
“Correlations of aftershock productivity according to the tectonic regime”
Earthquake clustering is a first-order feature of seismicity with important consequences for seismic hazard estimation. The dependence of the total aftershock numbers can be described by the function of the magnitude M of the mainshock, N = K exp(alpha*M). We analyze the total aftershock numbers globally and on regional scales.
Supervisor: Dr. Sebastian Hainzl
Verena Molina
Education
Diplom in Mathematics (2010), Institute of Mathematics, Department of Mathematics and Computer Sciences, Freie Universität Berlin. Diploma thesis title: „Multiple-Scales Analysis of Deep Convection in a Squall Line“
Current project with GeoSim (since 01.04.2011)
‘Asymptotic and Numerical Modeling of Cloud Processes in the Atmosphere’ at the Institute of Mathematics, Department of Mathematics and Computer Sciences, Freie Universtät Berlin.
Supervisors: Prof. Rupert Klein, Prof. Uwe Ulbrich
Derivation and validation of consistent mathematical models of dynamical and microphysical processes in earth's atmosphere
Walter Acevedo
Education
MSc in Physics at national University of Colombia (2006), Thesis title: Quantum transport in a spatially periodic magnetic billiard.
Current project with GeoSim (since 01.07.2011)
'Data Assimilation of Paleo-Proxy Data' at the Institute of Meteorology, Freie Universität Berlin. Objective: Implementation and testing of techniques for assimilating proxy records into global climate model, with the aim of generating improved climate datasets for the last centuries.
Supervisors: Prof. Dr. Ulrich Cubasch, Prof. Dr. Katja Matthes and Prof. Dr. Sebastian Reich.
Other GeoSim students
since 01.10.2011:
Catherine Abon, Filippines, at UP Hydrology and Climatology (Bronstert)
Sanjay Singh Bora, India, at UP Geophysics & Seismology (Scherbaum)
Camilla Cattania, Italy, at GFZ section 2.1 (Hainzl)
Christoph Glawe, Germany, at CTU Cottbus / FU Mathematics (Schmidt/Klein)
Linda Michalk, Germany, at FU Mathemathics (Klein)
Christian Molkenthin, Germany, at UP Geophysics & Seismology (Scherbaum)
Elvira Mulyukova, Norway, at GFZ section 2.5 (Steinberger)
Lisa Schielicke, Germany, at FU Meteorology (Ulbrich)
Ulrich Wilbrandt, Germany, at WIAS / FU Mathemathics (John)
Tobias Willenbockel, Germany, at FU Mathemathics (Klein)
Natalia Zamora, Costa Rica, at GFZ section 2.5 (Babeyko)
since 01.04.2012
Juliane Dannberg, Germany, at GFZ sektion 2.5 (Sobolev)
Nawinda Chutsagulprom, Thailand, at UP Mathematics (Reich)
Annabel Händel, Germany, at UP Geophysics & Seismology (Ohrnberger)
Oystein Thorden Haug, Norway, at GFZ section 3.1 (Oncken/Rosenau)
Annette Müller, Germany, at FU Meteorology (Nevir)
Elias Pipping, Germany, at FU Mathematics (Kornhuber)
Klaus Vormoor, Germany, at UP Hydrology and Climatology (Bronstert)
News
02.04.2012 GeoSim student Walter Acevedo has been invited to attend the 62nd Lindau Nobel Laureate meeting . Our congratulations!
From 1-5 April the first GeoSim "Summer School" (Numerical Modelling of Geophysical Flows) took place at Gülpe.