Verfügbarkeit: Estimating basal properties of glaciers and ice streams from surface measurements

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Bibliographische Detailangaben
Beteilige Person:	Raymond, Mélanie (VerfasserIn)
Format:	Hochschulschrift/Dissertation Buch
Sprache:	Englisch
Veröffentlicht:	Zürich Versuchsanst. für Wasserbau, Hydrologie und Glaziologie 2007
Schriftenreihe:	Mitteilungen 202
Schlagwörter:	Hochschulschrift
Links:	http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=018336700&sequence=000001&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA
Umfang:	XVII, 152 S. Ill., graph. Darst., Kt.

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Datensatz im Suchindex

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adam_text	VERSUCHSANSTALT FUR WASSERBAU HYDROLOGIE UND GJAZIOLOGIE DER EIDGENOSSISCHEN TECHNISCHEN HOCHSCHULE ZURICH MITTEILUNGEN 202 ESTIMATING BASAL PROPERTIES OF GLACIERS AND ICE STREAMS FROM SURFACE MEASUREMENTS MELANIE RAYMOND KPJA -I WOY. 2007 ZURICH, 2007 HERAUSGEBER: PROF. DR.-LNG. H.-E. MINOR FACHBEREICH 13 I DARMSTADT) 62505885 CONTENTS LIST OF FIGURES VII LIST OF SYMBOLS XI ABSTRACT XV RESUME XVII 1 INTRODUCTION 1 1.1 GENERAL FRAMEWORK 1 1.2 AIM OF THIS THESIS 4 1.3 THESIS OUTLINE 4 1 FORWARD PROBLEM 5 2 BED-TO-SURFACE TRANSFER CHARACTERISTICS 7 2.1 INTRODUCTION 8 2.2 FINITE-ELEMENT ICE-FLOW MODEL 9 2.2.1 BOUNDARY CONDITIONS 10 2.2.2 NON-DIMENSIONALIZATION 11 2.3 ALGORITHM 11 2.4 RESULTS 12 2.4.1 FINITE-AMPLITUDE EFFECTS 13 2.4.2 SURFACE TOPOGRAPHY 22 2.4.3 SURFACE VELOCITIES 29 2.4.4 DISCUSSION AND SUMMARY 34 III 3 VELOCITY FIELDS 41 3.1 INTRODUCTION 41 3.2 NUMERICAL MODEL 43 3.2.1 BOUNDARY CONDITIONS 43 3.2.2 NON-DIMENSIONALIZATION 44 3.2.3 MODEL CHARACTERISTICS 45 3.3 MODEL RESULTS 45 3.3.1 DETERMINATION OF THE VELOCITY FIELD PERTURBATIONS 45 3.3.2 VALIDATION 46 3.3.3 NONLINEAR FINITE AMPLITUDE EFFECTS 46 3.3.4 VELOCITY FIELDS 50 3.4 DISCUSSION AND SUMMARY 59 II INVERSE PROBLEM 65 4 BAYESIAN INFERENCE 67 4.1 BAYESIAN INFERENCE: AN INTRODUCTION 67 4.2 APPLICATION EXAMPLE 69 5 NON-LINEAR INVERSION OF SYNTHETIC DATA 71 5.1 INTRODUCTION 71 5.2 BED-TO-SURFACE TRANSFER AND FORWARD MODEL 73 5.3 NON-LINEAR BAYESIAN INVERSION 75 5.3.1 FORMULATION OF THE PROBLEM 75 5.4 NUMERICAL SIMULATIONS 81 5.4.1 LINEAR RHEOLOGY 81 5.4.2 NON-LINEAR RHEOLOGY 86 5.4.3 MODELING ERRORS 100 5.5 CONCLUSIONS 104 6 NON-LINEAR INVERSION OF REAL DATA 107 6.1 INTRODUCTION 108 6.2 FORWARD ICE STREAM MODEL 108 6.2.1 BOUNDARY CONDITIONS 109 6.2.2 PARAMETERIZATION OF THE SHEAR MARGINS 109 6.3 NON-LINEAR BAYESIAN INVERSION 110 6.3.1 FORMULATION OF THE PROBLEM 110 6.3.2 QUANTIFIYING UNCERTAINTIES 112 6.4 INVERSIONS WITH SYNTHETIC DATA 113 6.4.1 SIMPLE GEOMETRY 114 6.4.2 RUTFORD BEDROCK TOPOGRAPHY 114 6.5 RUTFORD ICE STREAM INVERSION 118 6.5.1 DATA 118 6.5.2 PRIOR MODEL PARAMETERS 125 6.5.3 INVERSION WITHOUT SURFACE EVOLUTION 125 6.5.4 INVERSION WITH SURFACE EVOLUTION 131 6.6 DISCUSSION 134 6.6.1 COMPARISON BETWEEN INVERSION RESULTS WITH AND WITHOUT SURFACE EVOLUTION 134 6.7 CONCLUSIONS 136 7 GENERAL CONCLUSIONS 141 7.1 OVERVIEW OF THE RESULTS 142 7.1.1 FORWARD PROBLEM 142 7.1.2 INVERSE PROBLEM 143 7.2 OUTLOOK . 143 BIBLIOGRAPHY 145 ACKNOWLEDGEMENTS 151
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indexdate	2024-12-20T13:53:44Z
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spellingShingle	Raymond, Mélanie Estimating basal properties of glaciers and ice streams from surface measurements
subject_GND	(DE-588)4113937-9
title	Estimating basal properties of glaciers and ice streams from surface measurements
title_auth	Estimating basal properties of glaciers and ice streams from surface measurements
title_exact_search	Estimating basal properties of glaciers and ice streams from surface measurements
title_full	Estimating basal properties of glaciers and ice streams from surface measurements Mélanie Raymond
title_fullStr	Estimating basal properties of glaciers and ice streams from surface measurements Mélanie Raymond
title_full_unstemmed	Estimating basal properties of glaciers and ice streams from surface measurements Mélanie Raymond
title_short	Estimating basal properties of glaciers and ice streams from surface measurements
title_sort	estimating basal properties of glaciers and ice streams from surface measurements
topic_facet	Hochschulschrift
url	http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=018336700&sequence=000001&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA
volume_link	(DE-604)BV000019874
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