Water level changes and related sedimentary environments at Lake Donggi Cona, north-eastern Tibetan Plateau, China: = Seespiegelschwankungen und assoziierte Sedimentationsumgebungen am Donggi-Cona-See, nordöstliches Tibet-Plateau, China
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| Main Author: | |
|---|---|
| Format: | Thesis/Dissertation Book |
| Language: | English |
| Published: |
2012
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| Subjects: | |
| Links: | http://www.diss.fu-berlin.de/diss/receive/FUDISS_thesis_000000044499 http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=025716009&sequence=000001&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA |
| Physical Description: | 133, [25] S. Ill., graph. Darst., Kt. |
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Record in the Search Index
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|---|---|
| adam_text | IMAGE 1
TABLE O F C O N T E N T S
LIST OF FIGURES 5
LIST OF TABLES 7
LIST OF ABBREVIATIONS 7
ABSTRACT 9
KURZFASSUNG 12
1. INTRODUCTION 15
1.1 MOTIVATION 15
1.2 OBJECTIVES, APPROACH AND OUTLINE 17
1.3 STATE-OF-THE-ART 20
1.3.1 STUDY AREA 20
1.3.2 GEOLOGICAL AND TECTONIC CONSTRAINTS 21
1.3.3 CLIMATIC CONSTRAINTS 22
1.3.4 ANTHROPOGENIC CONSTRAINTS 23
1.3.5 COMPONENTS OF A TIBETAN SEDIMENT CASCADE 24
2. BASIN MORPHOLOGY AND SEISMIC STRATIGRAPHY OF LAKE DONGGI CONA 29
ABSTRACT 29
2.1 INTRODUCTION 29
2.2 REGIONAL SETTING 31
2.3 DATA AND METHODS 34
2.4 RESULTS 35
2.4.1 BASIN MORPHOMETRY 35
2.4.2 FAULT PATTERN 37
2.4.3 SEISMO-DEPOSITIONAL UNITS 38
UNIT 1 38
UNIT II 41
HTTP://D-NB.INFO/1033853585
IMAGE 2
UNIT III 41
2.5 BASIN AND LAKE DEVELOPMENT 43
2.5.1 TECTONIC BASIN STRUCTURES 43
2.5.2 ORIGIN OF DEPOSITIONAL UNITS 44
2.5.3 DEPOSITIONAL HISTORY AND LAKE LEVEL FLUCTUATIONS 46
2.6 CONCLUSIONS AND OUTLOOK 49
ACKNOWLEDGEMENTS 50
3. AN END-MEMBER ALGORITHM FOR THE DECOMPOSITION OF GRAIN-SIZE
DISTRIBUTIONS 51
ABSTRACT 51
3.1 INTRODUCTION 52
3.2 BACKGROUND OF END-MEMBER MODELLING ANALYSIS 54
3.2.1 MATHEMATICAL CONCEPT OF EIGENSPACE ANALYSIS 54
3.2.2 APPLICATION OF EIGENSPACE ANALYSIS IN ENVIRONMENTAL RESEARCH 56
3.3 GEOGRAPHICAL SETTING 58
3.4 MATERIAL AND METHODS 59
3.4.1 FIELD AND LABORATORY ANALYSES 59
3.4.2 END-MEMBER MODELLING ANALYSIS (EMMA) OF GRAIN-SIZE DISTRIBUTIONS
60
3.5 RESULTS 63
3.5.1 GENERAL CHARACTERISATION OF LAKE SEDIMENTS AND EMMA 63
3.5.2 THE OPTIMAL END-MEMBER MODEL 65
3.5.3 THE ROBUST END-MEMBER MODEL 66
3.6 INTERPRETATION AND DISCUSSION 69
3.6.1 EVALUATION OF THE END-MEMBER MODELLING ALGORITHM 69
3.6.2 DETRITAL PROCESSES WITHIN LAKE DONGGI CONA 70
3.7 CONCLUSION AND OUTLOOK 72
ACKNOWLEDGEMENTS 73
IMAGE 3
4. HIGHER THAN PRESENT LAKE STANDS AT LAKE DONGGI CONA 75
4.1 ONSHORE LAKE TERRACES 75
4.2 LAKE HIGH-STAND SEDIMENTS 76
ABSTRACT 76
4.2.1 INTRODUCTION 76
4.2.2 STUDY AREA 76
4.2.3 METHODS 79
4.2.3.1 FIELD METHODS 79
4.2.3.2 LABORATORY METHODS 79
4.2.3.3 STATISTICAL METHODS 79
4.2.3.4 RADIOCARBON DATING 80
4.2.4 RESULTS AND INTERPRETATION 81
4.2.4.1 SEDIMENT SECTIONS AND RADIOCARBON DATING 81
4.2.4.2 CLASSIFICATION OF DEPOSITIONAL ENVIRONMENTS 83
4.2.4.3 DETRITAL GRAIN-SIZE END-MEMBERS 86
4.2.4.4 LAKE LEVEL RECONSTRUCTION FROM SEDIMENT FACIES 90
4.2.5 DISCUSSION 90
4.2.5.1 CHRONOLOGY OF LAKE LEVEL CHANGES 91
4.2.5.2 SYNTHESIS 93
4.2.6 CONCLUSIONS 96
ACKNOWLEDGEMENTS 98
5. SYNTHESIS 100
5.1 LANDSCAPE SENSITIVITY AND THE LOCAL DRIVING FORCES 100
5.1.1 BASIN MORPHOLOGY AND THE LITTORAL ZONE 100
5.1.2 IMPACTS FROM THE CATCHMENT 101
5.1.3 TECTONIC IMPACT 104
IMAGE 4
5.2 HYDROLOGICAL VARIATIONS AT LAKE DONGGI CONA 105
6. CONCLUSIONS 110
7. ACKNOWLEDGEMENTS 112
8. OVERALL REFERENCES 114
9. APPENDIX 128
9.1 END-MEMBER MODELING SCRIPT FOR MATLAB 128
9.2 LIST OF PUBLICATIONS AND PRESENTATIONS 131
PUBLICATIONS IN PEER-REVIEWED JOURNALS 131
ORAL PRESENTATIONS 131
POSTER PRESENTATIONS 132
9.3 LIST OF ORIGINAL GRAIN SIZE DATA SETS 133
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| discipline | Geologie / Paläontologie |
| format | Thesis Book |
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| spellingShingle | Dietze, Elisabeth Water level changes and related sedimentary environments at Lake Donggi Cona, north-eastern Tibetan Plateau, China = Seespiegelschwankungen und assoziierte Sedimentationsumgebungen am Donggi-Cona-See, nordöstliches Tibet-Plateau, China |
| subject_GND | (DE-588)4113937-9 |
| title | Water level changes and related sedimentary environments at Lake Donggi Cona, north-eastern Tibetan Plateau, China = Seespiegelschwankungen und assoziierte Sedimentationsumgebungen am Donggi-Cona-See, nordöstliches Tibet-Plateau, China |
| title_alt | Seespiegelschwankungen und assoziierte Sedimentationsumgebungen am Donggi-Cona-See, nordöstliches Tibet-Plateau, China |
| title_auth | Water level changes and related sedimentary environments at Lake Donggi Cona, north-eastern Tibetan Plateau, China = Seespiegelschwankungen und assoziierte Sedimentationsumgebungen am Donggi-Cona-See, nordöstliches Tibet-Plateau, China |
| title_exact_search | Water level changes and related sedimentary environments at Lake Donggi Cona, north-eastern Tibetan Plateau, China = Seespiegelschwankungen und assoziierte Sedimentationsumgebungen am Donggi-Cona-See, nordöstliches Tibet-Plateau, China |
| title_full | Water level changes and related sedimentary environments at Lake Donggi Cona, north-eastern Tibetan Plateau, China = Seespiegelschwankungen und assoziierte Sedimentationsumgebungen am Donggi-Cona-See, nordöstliches Tibet-Plateau, China vorgelegt von Elisabeth Dietze |
| title_fullStr | Water level changes and related sedimentary environments at Lake Donggi Cona, north-eastern Tibetan Plateau, China = Seespiegelschwankungen und assoziierte Sedimentationsumgebungen am Donggi-Cona-See, nordöstliches Tibet-Plateau, China vorgelegt von Elisabeth Dietze |
| title_full_unstemmed | Water level changes and related sedimentary environments at Lake Donggi Cona, north-eastern Tibetan Plateau, China = Seespiegelschwankungen und assoziierte Sedimentationsumgebungen am Donggi-Cona-See, nordöstliches Tibet-Plateau, China vorgelegt von Elisabeth Dietze |
| title_short | Water level changes and related sedimentary environments at Lake Donggi Cona, north-eastern Tibetan Plateau, China |
| title_sort | water level changes and related sedimentary environments at lake donggi cona north eastern tibetan plateau china seespiegelschwankungen und assoziierte sedimentationsumgebungen am donggi cona see nordostliches tibet plateau china |
| title_sub | = Seespiegelschwankungen und assoziierte Sedimentationsumgebungen am Donggi-Cona-See, nordöstliches Tibet-Plateau, China |
| topic_facet | Hochschulschrift |
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