Beichtspiegel: deutsch, polnisch, italienisch, französisch
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Datensatz im Suchindex
| _version_ | 1804178943983484928 |
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| adam_text | INTEGRATED BENTHIC EXCHANGE DYNAMICS
AND BIOGEOCHEMICAL PROCESSES UNDER
VARYING ENVIRONMENTAL CONDITIONS
DISSERTATION
ZUR ERLANGUNG DES DOKTORGRADES
DER NATURWISSENSCHAFTEN
- DR. RER. NAT. -
DEM FACHBEREICH BIOLOGIE/CHEMIE
DER UNIVERSITAT BREMEN
VORGELEGT VON
DAPHNE DONIS
NOVEMBER 2013
HTTP://D-NB.INFO/1056974842
CONTENTS
CONTENTS XI
1 INTRODUCTION 1
1.1 ORGANIC MATTER REMINERAIIZATION IN MARINE SEDIMENTS 1
1.1.1 INFLUENCE OF DEPOSITION RATES ON ORGANIC MATTER REMINERAIIZATION .
. 4
1.1.2 INFLUENCE OF PORE WATER ADVECTION ON ORGANIC MATTER
REMINERAIIZATION 6
1.1.2.1 ROLE OF FAUNA 6
1.1.2.2 CURRENT INDUCED ADVECTION 7
1.2 OXYGEN DYNAMICS AT SEDIMENT WATER INTERFACE 8
1.2.1 BENTHIC AND DIFFUSIVE BOUNDARY LAYER 8
1.2.2 MOLECULAR DIFFUSION 10
1.2.3 TURBULENT (EDDY) DIFFUSION 12
1.3 OXYGEN BENTHIC FLUXES MEASUREMENTS 13
1.3.1 BENTHIC CHAMBERS 14
1.3.2 MICROSENSOR PROFILES 16
1.3.3 EDDY CORRELATION TECHNIQUE 17
1.3.3.1 THE EDDY CORRELATION SYSTEM . 18
1.3.3.2 PRINCIPLE OF EDDY CORRELATION FLUX MEASUREMENT AND CAL
CULATION 19
1.4 COMPARISON BETWEEN IN SITU BENTHIC FLUX METHODS 22
1.5 OBJECTIVES 25
1.6 OUTLINE OF ENCLOSED MANUSCRIPTS 27
2 IMPROVING PRECISION AND CONFIDENCE OF AQUATIC EDDY CORRELATION MEA
SUREMENTS 31
2.1 ABSTRACT 32
2.2 INTRODUCTION 33
2.3 MATERIALS AND PROCEDURES 34
2.3.1 WORKSHOP 1: EC MEASUREMENTS 34
2.3.2 NIOZ FLUME SET UP 34
2.3.3 EC SYSTEM 35
2.3.4 FLUX ANALYSIS 35
2.3.5 RIME-SHIFT CORRECTION AND P-VALUE 36
2.3.6 TIME-SHIFT EFFECT ON OO FLUXES MEASUREMENT FOR DIFFERENT SENSORS
DISTANCE AND ORIENTATIONS: EXPERIMENT 1 AND 2 (EXP.L. EXP.2.
EXP.3) 36
XI
TABLE OF CONTENTS
2.3.7 THEORETICAL AND CALCULATED TIME-SHIFTS 37
2.3.S MICROPROFILES AND DISSOLVED OO UPTAKE (DOU) RATES 38
2.3.9 INCUBATIONS AND TOTAL O2 UPTAKE (TOU) RATES 38
2.3.10 WORKSHOP 2: PIV-LIF MEASUREMENT 38
2.3.11 LANDAU FLUME SET UP 38
2.3.12 NUMERICAL MODEL OF A CLARK TYPE MICROELECTRODE 40
2.4 RESULTS 42
2.4.1 WORKSHOP 1: EC MEASUREMENTS 42
2.4.2 TIME-SHIFT EFFECT ON O2 FLUXES MEASUREMENT FOR DIFFERENT SENSORS
DISTANCE AND ORIENTATIONS: EXP.L AND EXP.2 42
2.4.3 FLUXES OBTAINED BY MICROPROFILES AND INCUBATIONS 43
2.4.4 ANALYSIS ON SINGLE BURSTS 43
2.4.5 WORKSHOP 2: PIV-LIF MEASUREMENTS 44
2.4.6 NUMERICAL MODEL OF A CLARK TYPE MICROELECTRODE 45
2.5 DISCUSSION 47
2.5.1 TIME-SHIFT, SENSORS DISPLACEMENT AND FLOW DIRECTION 47
2.5.2 FLUX UNDERESTIMATION DUE TO CLARK TYPE O2 MICROSENSOR RESPONSE
TIME 50
2.5.3 THEORETICAL CORRECTION WITH FREQUENCY-DEPENDENT DAMPENING FUNC
TION 51
2.6 CONCLUSIONS AND RECOMMENDATIONS 52
3 EFFECTS OF TRANSIENT BOTTOM WATER CURRENTS AND OXVCCN CONCENTRATIONS
ON BENTHIC EXCHANGE RATES AS ASSESSED B -J -ONELATION MEASURE
MENTS 69
4 BENTHIC BOUNDARY LAYER CONDITIONS FOR EDDY CORRELATION MEASUREMENTS
IN OLIGOTHROPHIC DEEP SEA: EXTREMELY LOW BENTHIC OXYGEN FLUXES IN ARC
TIC SEDIMENTS (HAUSGARTEN OBSERVATORY) 83
4.1 ABSTRACT 84
4.2 INTRODUCTION 85
4.3 MATERIAL AND METHODS 87
4.3.1 SITE DESCRIPTION 87
4.3.2 BENTHIC OXYGEN FLUX MEASUREMENTS 87
4.3.3 O2 MICROPROFILES 88
4.3.4 BENTHIC CHAMBER INCUBATIONS 88
4.3.5 EC INSTRUMENT AND DEPLOYMENT 88
4.3.6 EC FLUX ANALYSIS 89
4.4 RESULTS 90
4.4.1 EC FLUXES 90
4.4.2 O2 MICROPROFILES 90
4.4.3 BENTHIC CHAMBER INCUBATION 90
4.5 DISCUSSION 91
4.5.1 ADV BEAM CORRELATION THRESHOLD 91
4.5.2 ELECTRONIC NOISE AND SMALL O2 FLUCTUATIONS 92
4.5.3 EFFECT OF CURRENT FIELD ON MEASURED EC FLUXES 92
4.5.4 TIME SHIFT CORRECTION 93
4.5.5 ASSESSMENT OF UNCERTAINTIES 94
TABLE OF CONTENTS XIII
4.5.6 COMPARISON BETWEEN METHODS 94
4.6 CONCLUSIONS 95
5 BIOGEOCHEMICAL IMPACT OF SUBMARINE GROUNDWATER DISCHARGE ON COASTAL
SURFACE SANDS OF THE SOUTHERN BALTIC SEA AS REVEALED BY IN-SITU SBC
(STIRRED-BENTHIC CHAMBER) MEASUREMENTS 109
5.1 INTRODUCTION ILL
5.2 MATERIALS AND METHODS 114
5.2.1 STUDY AREA AND PORE WATER INVESTIGATIONS 114
5.2.2 IN SITU INCUBATIONS 115
5.2.3 MIXING CALCULATIONS 116
5.2.4 PREDICTION OF CONSERVATIVE SOLUTE BEHAVIOR BASED ON SALINITY . . .
.116
5.2.5 WATER SAMPLE ANALYSIS 117
5.3 RESULTS 117
5.3.1 WATER COLUMN PARAMETERS AND SGD SPATIAL PATTERNS 117
5.3.2 PORE WATER PROFILES AND GROUNDWATER COMPOSITION 118
5.3.3 SEEPAGE RATES 118
5.3.4 FLUX CHAMBER TIME SERIES 119
5.3.5 PORE WATER AND CHAMBER WATER MIXING 121
5.3.6 BENTHIC OXYGEN AND DIG FLUXES 122
5.4 DISCUSSION 123
5.4.1 SEEPAGE RATES 123
5.4.2 PORE WATER MIXING 124
5.4.3 REDOX CONTROLLED SOLUBILITY OF POREWATER CONSTITUENTS WITH NON-
CONSERVATIVE BEHAVIOR: MN
2+
. FE
2+
AND PO4
-
125
5.4.4 BENTHIC OXYGEN CONSUMPTION AND NET COMMUNITY PRODUCTION . . . 127
5.4.5 AEROBIC AND ANAEROBIC SEDIMENT RESPIRATION 130
5.5 CONCLUSIONS 132
6 DISCUSSION AND PERSPECTIVES 153
6.1 IN SITU BENTHIC FLUXES ESTIMATION FOR PERMEABLE COASTAL SEDIMENTS
154
6.2 IN SITU BENTHIC FLUXES ESTIMATION FOR COHESIVE AND DEEP-SEA
SEDIMENTS . . . 157
6.3 TOWARDS AN IMPROVED CONFIDENCE OF EDDY CORRELATION MEASUREMENTS ....
157
6.4 TECHNICAL IMPROVEMENTS FOR AQUATIC EDDY CORRELATION 160
BIBLIOGRAPHY 161
ACKNOWLEDGEMENTS 183
APPENDIX 185
A ADDITIONAL STUDIES AND SECONDMENTS 187
A.L ADDITIONAL STUDIES NOT INCLUDED AS MANUSCRIPTS 187
A.2 SECONDMENTS 190
B WORKSHOPS AND CONFERENCES 191
B.L WORKSHOPS 191
TABLE OF CONTENTS
B.2 INTERNATIONAL CONFERENCES: ORAL PRESENTATIONS 192
|
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| illustrated | Not Illustrated |
| indexdate | 2024-07-10T08:12:01Z |
| institution | BVB |
| language | German Polish Italian French |
| oai_aleph_id | oai:aleph.bib-bvb.de:BVB01-030611730 |
| oclc_num | 1056974842 |
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| owner_facet | DE-155 DE-BY-UBR |
| physical | 6 Seiten |
| publishDateSearch | 1939 |
| publishDateSort | 1939 |
| record_format | marc |
| spelling | Beichtspiegel deutsch, polnisch, italienisch, französisch Breslau Nischkowsky (v. Heydebrand) [1939] 6 Seiten txt rdacontent n rdamedia nc rdacarrier Text dt., poln., ital. und franz. DNB Datenaustausch application/pdf http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=030611730&sequence=000001&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA Inhaltsverzeichnis |
| spellingShingle | Beichtspiegel deutsch, polnisch, italienisch, französisch |
| title | Beichtspiegel deutsch, polnisch, italienisch, französisch |
| title_auth | Beichtspiegel deutsch, polnisch, italienisch, französisch |
| title_exact_search | Beichtspiegel deutsch, polnisch, italienisch, französisch |
| title_full | Beichtspiegel deutsch, polnisch, italienisch, französisch |
| title_fullStr | Beichtspiegel deutsch, polnisch, italienisch, französisch |
| title_full_unstemmed | Beichtspiegel deutsch, polnisch, italienisch, französisch |
| title_short | Beichtspiegel |
| title_sort | beichtspiegel deutsch polnisch italienisch franzosisch |
| title_sub | deutsch, polnisch, italienisch, französisch |
| url | http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=030611730&sequence=000001&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA |