ALBERT

Note: Dissertation, Universität Potsdam, 2015 , Table of Contents Acknowledgements Abstract Zusammenfassung List of figures and tables List of Abbreviations 1. Introduction 1.1. Preface and thesis organization 1.2. Research motivation and relevance 1.3. Background knowledge 1.3.1. Terrigenous sediments 1.3.2. Hala Lake 1.3.3. The North Pacific 1.3.4. The Bering Sea 1.4. Aims and objectives 1.5. Methodological overview 1.5.1. Fieldwork 1.5.2. Age-depth modeling 1.5.3. Key proxies: grain size and clay minerals 1.5.4. Supplementary methodology: remote sensing, seismic sub-bottom profiling and geochemistry 1.6. Overview and status of the manuscripts 2 Manuscript 1 : Linkages between Quaternary climate change and sedimentary processes in Hala Lake, northern Tibetan Plateau, China Abstract 2.1. Introduction 2.2. Regional setting 2.3. Materials and methods 2.3.1. Remote sensing of the study area 2.3.2. Fieldwork 2.3.3. Radiocarbon dating of recovered sediment cores 2.3.4. Laboratory work 2.3.5. Statistical data treatment 2.4. Results and interpretation 2.4.1. Remote sensing on the spatial heterogeneity of lake ice and length of lake ice-free days 2.4.2. Seismic sub-bottom profiling 2.4.3. Age and sedimentary characteristics of the sediment core record 2.4.4. Grain-size modeling results 2.5. Discussion 2.5.1. Last Glacial Maximum (~24-17 cal. ka BP) 2.5.2. Time-equivalent of Heinrich Event 1 (~17-15.4 cal. ka BP) 2.5.3. Time-equivalent of Bolling-Allerod (~15.4-13 cal. ka BP) 2.5.4. Time-equivalent of Younger Dryas (~12.9-11.6 cal. ka BP) 2.5.5. Holocene (~11.6 cal. ka BP to present) 2.6. Conclusions Acknowledgments 3 Manuscript 2: Modern modes of provenance and dispersal of terrigenous sediments in the North Pacific and the Bering Sea: Implications and perspectives for palaeoenvironmental reconstructions Abstract 3.1. Introduction 3.2. Study area and regional setting 3.3. Material and methods 3.4. Results 3.4.1. Grain size distribution 3.4.2 Bulk mineralogy 3.4.3. Mineralogy of the clay fraction 3.5. Discussion 3.5.1. Sedimentary processes 3.5.2. Sediment provenance 3.5.3 Implications for palaeoenvironmental studies 3.6. Conclusions Acknowledgements 4 Manuscript 3: Provenance and dispersal of terrigenous sediments in the Bering Sea slope: Implications for late glacial land-ocean linkages Abstract 4.1. Introduction 4.2. Regional setting 4.3. Material and methods 4.4. Results and interpretation 4.4.1. Lithology and stratigraphy 4.4.2. Grain size distribution 4.4.3. Clay mineralogy 4.5. Discussion 4.5.1. Processes of terrigenous sediment supply 4.5.2. Detrital sediment sources 4.5.3. Detrital sediment supply and its relation to regionalpalaeoenvironmental changes 4.5.3.1. Time interval 32-15.7 ka BP: Background sedimentation at low sea level 4.5.3.2. Time interval 15.7-14.5 ka BP: Regional Meltwater Pulse 4.5.3.3. Time interval 14.5-12.9 ka BP: First biological bloom event 4.5.3.4. Time interval 12.9-6 ka BP: Cooling episode, rejuvenation of biological productivity and onset ofmodern conditions 4.5.4. Palaeoenvironmental implications 4.6. Conclusions Acknowledgements 5 Synthesis 5.1. The North Hemisphere synchronization of millennial climate oscillations during the last Glacial: teleconnections from Westerlies and thermohaline Circulation 5.2. The regional asynchronization of millennial climate oscillations during the last Glacial: discrepancy and "recording capacity" 5.3. Secondary connections between global climate transmissions: winter cyclone in the North Pacific 5.4. Future perspectives 6 References 7 Appendix Extended results: Core SO202-39-3 from the mid-latitude North Pacific 7.1. Material 7.2. Results 7.3. Oscillation of eolian sediment transport 7.4. Conclusions