Thermal conditions and kinematics of steep bedrock permafrost
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| Format: | Abschlussarbeit Buch |
| Sprache: | English |
| Veröffentlicht: |
Zürich
Geograph. Inst. der Univ. Zürich
2011
|
| Schriftenreihe: | Schriftenreihe physische Geographie
63 : Glaziologie und Geomorphodynamik |
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| Online-Zugang: | Inhaltsverzeichnis Klappentext |
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| 100 | 1 | |a Hasler, Andreas |e Verfasser |4 aut | |
| 245 | 1 | 0 | |a Thermal conditions and kinematics of steep bedrock permafrost |c Andreas Hasler |
| 264 | 1 | |a Zürich |b Geograph. Inst. der Univ. Zürich |c 2011 | |
| 300 | |a IX, 164 S. |b Ill., graph. Darst., Kt. | ||
| 336 | |b txt |2 rdacontent | ||
| 337 | |b n |2 rdamedia | ||
| 338 | |b nc |2 rdacarrier | ||
| 490 | 1 | |a Schriftenreihe physische Geographie |v 63 : Glaziologie und Geomorphodynamik | |
| 500 | |a Zsfassung in dt. Sprache | ||
| 502 | |b Dissertaion |c Universität Zürich |d 2011 | ||
| 650 | 0 | 7 | |a Felssturz |0 (DE-588)4153981-3 |2 gnd |9 rswk-swf |
| 650 | 0 | 7 | |a Dauerfrostboden |0 (DE-588)4129794-5 |2 gnd |9 rswk-swf |
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| 689 | 0 | 0 | |a Hochgebirge |0 (DE-588)4025207-3 |D s |
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| 689 | 0 | 2 | |a Felssturz |0 (DE-588)4153981-3 |D s |
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| 830 | 0 | |a Schriftenreihe physische Geographie |v 63 : Glaziologie und Geomorphodynamik |w (DE-604)BV026608940 |9 63 | |
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Datensatz im Suchindex
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| DE-BY-UBG_katkey | 2839598 |
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| _version_ | 1811359842745450496 |
| adam_text | Contents
Abstract
і
Zusammenfassung ü
Acknowledgements
iii
Content
¡v
List of Abbreviations
vi
Part A: Synopsis
1
Introduction
З
1.1
Context
and relevance
3
1.2
Previous work and problem statement
4
1.3
Research questions
6
1.4
Structure
6
2
Methodology
9
2.1
Science theory
9
2.2
Approaches used in this thesis
12
3
Distributed wireless sensing in harsh environments
17
3.1
System design
17
3.2
Application at two field sites
19
3.3
Technical outcomes
21
4
Thermal conditions of steep bedrock permafrost
23
4.1
Surface temperatures in steep bedrock
23
4.2
Near-surface processes and thermal offsets
24
4.3
Permafrost temperature and distribution
25
5
Cleft ice and
hydrothermal
processes
27
5.1
Basic processes
27
5.2
Quantification in a single cleft
28
5.3
Application to fractured steep bedrock
30
6
Kinematics of steep bedrock permafrost
33
6.1
Movement patterns in bedrock permafrost
33
6.2
Driving processes
34
7
Synthesis
37
7.1
Process interactions of permafrost-related rock instabilities
37
7.2
Delimitation of rock fall occurrence in time and space
39
7.3
In-situ monitoring of potential high-alpine rock fall
42
8
Conclusion
45
8.1
Summary of progress
45
8.2
Outcomes
45
8.3
Perspectives
46
References
49
Part B:
Publications
Methodical papers:
I Wireless sensor networks in permafrost research
57
Hasler, Talzi,
Beutel,
Tschudin and
Gruber,
2008,
Proceedings NICOP
II Perma DAQ: A scientific instrument for precison sensing
(...) 65
Beutel, Gruber,
Hasler,
Lim,
Meier,
Plessi,
Talzi,
Thiele,
Tschudin, Woehrle and
Yuecel,
2009,
Proceedings IPSN
09
Research papers:
III Temperature variability and offset in steep alpine bedrock
79
Hasler,
Gruber
and Haeberli,
2011,
TC
IV Advective heat transport in frozen clefts
95
Hasler,
Gruber,
Font and
Dubois,
2011,
PPP
V Kinematics in permafrost bedrock
115
Hasler,
Gruber
and
Beutel,
accepted, JGR
Appendix
Technical documantation
139
A.I Wireless sensor network
-
hardware setup
139
A.2 Data management and data processing
142
A3
Data quality
146
A.4 Data continuity
151
Supplementary material
155
A.5 Melt water temperatures
155
A.6 Sensible and latent heat advection in field data
156
A.7 Thermal diode effect in cold bedrock: numerical experiments
158
A.8 Freezing of pore water
-
resistivity measurements
159
A.9 Frost cracking
-
evidence from field measrements?
161
Personal bibliograpy
163
Rock fall
from
permafrost
bedrock and stability problems of high-alpine infrastruc¬
ture raise the demand for understanding how these rock faces evolve in response
to climate change and where most critical situations may emerge. However, the pro¬
cesses linking climate and rock instability are still poorly understood and empirical
data from mountain permafrost is limited.This thesis on the thermal, hydrological
and mechanical processes in steep bedrock permafrost addresses this knowledge
gap. It is mainly based on distributed in-situ measurements of temperatures, rock
movements and hydrological parameters. For this two wireless sensor network
were operated at two field sites
(Matterhorn
and
Jungfraujoch,
Swiss Alps) over the
past
3
years and acquired
datasets
of novel quality and with new contents. Addi¬
tionally, laboratory experiments and numerical simulations of a single ice-filled cleft
where set up to investigate the cleft ice evolution under the influence of water per¬
colation.The main findings of these investigations are: i) a significant cooling effect
with respect to snow-free surfaces in radiation-exposed rock faces caused by thin
snow cover and air ventilation in clefts; ii) high erosion rates of the cleft ice but lit¬
tle warming of the surrounding rock caused by melt water warmed-up before per¬
colation;
iii)
two temporal patterns of rock movements of which one is novel and
attributed to summer heat waves and the percolation of melt water. These find¬
ings suggest both, rock thermal conditions and melt-water production as drivers of
warming-related rock instabilities.
|
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| discipline | Agrar-/Forst-/Ernährungs-/Haushaltswissenschaft / Gartenbau Geographie |
| format | Thesis Book |
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| id | DE-604.BV039899828 |
| illustrated | Illustrated |
| indexdate | 2024-09-27T16:26:41Z |
| institution | BVB |
| isbn | 3855432597 |
| language | English |
| oai_aleph_id | oai:aleph.bib-bvb.de:BVB01-024758717 |
| oclc_num | 778839588 |
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| physical | IX, 164 S. Ill., graph. Darst., Kt. |
| publishDate | 2011 |
| publishDateSearch | 2011 |
| publishDateSort | 2011 |
| publisher | Geograph. Inst. der Univ. Zürich |
| record_format | marc |
| series | Schriftenreihe physische Geographie |
| series2 | Schriftenreihe physische Geographie |
| spellingShingle | Hasler, Andreas Thermal conditions and kinematics of steep bedrock permafrost Schriftenreihe physische Geographie Felssturz (DE-588)4153981-3 gnd Dauerfrostboden (DE-588)4129794-5 gnd Hochgebirge (DE-588)4025207-3 gnd |
| subject_GND | (DE-588)4153981-3 (DE-588)4129794-5 (DE-588)4025207-3 (DE-588)4113937-9 |
| title | Thermal conditions and kinematics of steep bedrock permafrost |
| title_auth | Thermal conditions and kinematics of steep bedrock permafrost |
| title_exact_search | Thermal conditions and kinematics of steep bedrock permafrost |
| title_full | Thermal conditions and kinematics of steep bedrock permafrost Andreas Hasler |
| title_fullStr | Thermal conditions and kinematics of steep bedrock permafrost Andreas Hasler |
| title_full_unstemmed | Thermal conditions and kinematics of steep bedrock permafrost Andreas Hasler |
| title_short | Thermal conditions and kinematics of steep bedrock permafrost |
| title_sort | thermal conditions and kinematics of steep bedrock permafrost |
| topic | Felssturz (DE-588)4153981-3 gnd Dauerfrostboden (DE-588)4129794-5 gnd Hochgebirge (DE-588)4025207-3 gnd |
| topic_facet | Felssturz Dauerfrostboden Hochgebirge Hochschulschrift |
| url | http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=024758717&sequence=000002&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=024758717&sequence=000004&line_number=0002&func_code=DB_RECORDS&service_type=MEDIA |
| volume_link | (DE-604)BV026608940 |
| work_keys_str_mv | AT haslerandreas thermalconditionsandkinematicsofsteepbedrockpermafrost |