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Nora Schulze

Institution:University of Bremen
Room:MARUM I, room 4580
Phone:+49 421 218 - 65373
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Other webpage(s):Nora's faculty web page
Nora Schulze

PhD project:

Seismic investigation of possible ICDP drilling locations within the lake Nam Co, Tibet

The influence of the Tibetan Plateau (TP) on the Asian monsoon system is of particular importance for the atmospheric circulation and consequently for the global hydrological and energy cycle. The Tibetan Plateau feeds the major rivers of Asia, providing freshwater for the population as well as sediment for many megadeltas. Considering the economic and ecological importance of the Tibetan Plateau, it is necessary to estimate the reactions of its environment to past and future climate change scenarios.

High-resolution sedimentary records retrieved from one or several ICDP cores in Lake Nam Co, Tibet, could provide the necessary data on the climate and the associated environmental changes during glacial/interglacial cycles of the past. Important for an ICDP core location is the existence of a massive sedimentary deposit with horizontal and undisturbed layers as well as good knowledge of the sedimentation processes and the tectonic evolution in the lake area.

My PhD thesis will be conducted as framework for the aspired International Continental Scientific Drilling Program (ICDP) drilling campaign. I will carry out my research based on seismo-acoustic data from the lake, acquired in 2014 and 2016. The first step will be the complex procedure of processing the multichannel seismic data to gain a high quality dataset. Subsequently, the sedimentary system within Nam Co can be reconstructed by developing a seismo-stratigraphic concept. A further step will be the deduction of the tectonic setting by interpreting the basement reflectors and the fault alignments. This includes testing the hypotheses whether the tectonic evolution was influenced by strike-slip movements. Finally, possible lake-level changes by glacial and monsoonal variations shall be estimated. Also, the hypotheses of a mega-lake setting on the Tibetan Plateau will be investigated. The results will lead to a site survey for ICDP drill sites and will contribute to an ICDP drilling proposal.

Thesis committee:

Prof. Dr. Volkhard SpießUniversity of Bremen
Dr. Gerhart DautFriedrich-Schiller-Universität Jena
Dr. Tilmann SchwenkUniversity of Bremen
Dr. Jerome van der WoerdUniversité Strasbourg, France
GLOMAR Research Theme B