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Natalie Höppner

Doctoral Students

Group: 

Isotope Geochemistry

Phone: 

+49 421 218-65934

Email:

Room: 

MARUM I, 1240

Natalie Höppner
 

Description of PhD thesis

'Investigating the impact of climate and environmental changes on the river dynamics of the Amazon and Río de la Plata basin and analyzing the element and sediment supply to the ocean'

My PhD project will combine radiogenic (Sr, Nd, Pb) and non-traditional stable (Li, B) isotopes to investigate the impact of environmental changes on the Amazon and Río de la Plata River dynamics and elemental discharge to the ocean.
Multi proxy isotope analyses of the suspended particulate matter (SPM) from the different tributaries in the river basins is performed to get a recent fingerprint of the basin conditions (draining areas, draining volume etc.). Furthermore, one marine sediment cores per basin, that is located near the river mouth, is analysed as well. They are an archive (several thousand years) of the material supplied from the rivers to the ocean.
Through the combination of the two approaches it is possible to identify changes in the river basins (in draining history, sediment supply etc.) in the past.
 

Research Interests

  • radiogenic (Sr, Nd, Pb) and non-traditional metal stable (Li, B) isotopes
  • mass spectrometry
  • weathering processes
  • provenance studies
  • forensic geochemistry
 
Thesis committee
Prof. Dr. Simone KasemannUniversity of Bremen
Dr. Friedrich LucassenUniversity of Bremen
Dr. Enno SchefußUniversity of Bremen

Curriculum Vitae

11/2014 - recentPhD student at MARUM, University of Bremen

Thesis title:
"Investigating the impact of climate and environmental changes on the river dynamics of the Amazon and Río de la Plata basin and analyzing the element and sediment supply to the ocean"
2012 - 2014MSc Geoscience, Georg-August University Göttingen

Thesis title:
"Validation of different digestion and strontium separation methods for 87Sr/86Sr isotopic ratio determination and provenance study of asparagus"

Supervisors: Prof. Dr. Bent T. Hansen, Dr. Nicole Nolte (University of Göttingen), Dr. Martin Rosner (IsoAnalysis UG, Berlin)
2009 - 2012BSc Geoscience, University of Bremen

Thesis title:
"Separation of strontium and lead from matrix reference material using Sr.spec - Strontium"

Supervisors: Dr. Friedrich Lucassen, Prof. Dr. Simone Kasemann, Anette Meixner (MARUM, University of Bremen), Prof. Dr. Wolfgang Bach (University of Bremen)