Sorted Paterned in Karst Caves: Development and Potential for Permafrost Research
One of the most distinctive periglacial landscape landforms is patterned ground. Although usually found in mountains or in polar regions, it has also been reported from several karst caves in Slovenian Dinaric Mountains and Alps, Swiss Jura Mountains and West Carpathian Mountains in Slovakia but nev...
Main Authors: | , , , , |
---|---|
Format: | Conference Object |
Language: | unknown |
Published: |
2019
|
Subjects: | |
Online Access: | https://epic.awi.de/id/eprint/50847/ https://storage.googleapis.com/wzukusers/user-30969499/documents/76924e798fb24c8cb468f497938340ab/SouthCOP%202019%20Conference%20Handbook%20WEB.pdf https://hdl.handle.net/10013/epic.d34912d5-5544-429c-ade0-03b0ae4ae4b9 |
id |
ftawi:oai:epic.awi.de:50847 |
---|---|
record_format |
openpolar |
spelling |
ftawi:oai:epic.awi.de:50847 2024-09-15T18:11:43+00:00 Sorted Paterned in Karst Caves: Development and Potential for Permafrost Research Obu, Jaroslav Kosutnik, Jure Overduin, Paul Boike, Julia Blatnik, Matej 2019-12 https://epic.awi.de/id/eprint/50847/ https://storage.googleapis.com/wzukusers/user-30969499/documents/76924e798fb24c8cb468f497938340ab/SouthCOP%202019%20Conference%20Handbook%20WEB.pdf https://hdl.handle.net/10013/epic.d34912d5-5544-429c-ade0-03b0ae4ae4b9 unknown Obu, J. , Kosutnik, J. , Overduin, P. orcid:0000-0001-9849-4712 , Boike, J. orcid:0000-0002-5875-2112 and Blatnik, M. (2019) Sorted Paterned in Karst Caves: Development and Potential for Permafrost Research , 1st Southern Hemisphere Conference on Permafrost, Queenstown, New Zealand, 4 December 2019 - 14 December 2019 . hdl:10013/epic.d34912d5-5544-429c-ade0-03b0ae4ae4b9 EPIC31st Southern Hemisphere Conference on Permafrost, Queenstown, New Zealand, 2019-12-04-2019-12-14 Conference notRev 2019 ftawi 2024-06-24T04:23:24Z One of the most distinctive periglacial landscape landforms is patterned ground. Although usually found in mountains or in polar regions, it has also been reported from several karst caves in Slovenian Dinaric Mountains and Alps, Swiss Jura Mountains and West Carpathian Mountains in Slovakia but never studied in detail. Ledenica pod Hrušico ice cave lies on a karst plateau at an elevation of about 800 m. It consists of a spacious 20 m deep shaft, debris cone and two small passages. One of the passages contains fine sediments, which are mixed with limestone debris. Sorted stripes are present on an inclined slope of this passage. Twelve 20-50 cm wide stripes of coarse limestone debris developed on fine cave sediment. The grain size of the fine sediment is predominantly silty (80 %), which makes it very susceptible to frost heaving. A geoelectrical survey and drilling revealed one metre sediment thickness. Several freeze-thaw cycles occur at the sediment ground surface in winter due to cave temperature fluctuations. Cave air temperature measurements show that surface air enters the cave only when its temperature drops below the cave air temperature, which results in preferentially cold and oscillating winter temperatures and the formation of a cool air pool in the summer. Karst caves can contain significant amounts of silty sediments that accumulated during flood events when the cave was situated in the floodwater zone or can originate from fine rock weathering. Frost shattering of parent bedrock is a potential source for coarse debris. The cold climatic conditions that result from cave morphology sustain low ground temperatures in summer and cause freeze-thaw cycles in winter, which result in frost heaving that causes sediment sorting. Barka Cave lies close to Snežnik Mountain at an elevation of 1100 m. It is a 20 m deep and 50 long oval collapse doline with locally overhanging walls. Sorted patterned ground developed on vegetation free floor under these walls. Especially characteristic are sorted circles with ... Conference Object Ice permafrost Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
institution |
Open Polar |
collection |
Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
op_collection_id |
ftawi |
language |
unknown |
description |
One of the most distinctive periglacial landscape landforms is patterned ground. Although usually found in mountains or in polar regions, it has also been reported from several karst caves in Slovenian Dinaric Mountains and Alps, Swiss Jura Mountains and West Carpathian Mountains in Slovakia but never studied in detail. Ledenica pod Hrušico ice cave lies on a karst plateau at an elevation of about 800 m. It consists of a spacious 20 m deep shaft, debris cone and two small passages. One of the passages contains fine sediments, which are mixed with limestone debris. Sorted stripes are present on an inclined slope of this passage. Twelve 20-50 cm wide stripes of coarse limestone debris developed on fine cave sediment. The grain size of the fine sediment is predominantly silty (80 %), which makes it very susceptible to frost heaving. A geoelectrical survey and drilling revealed one metre sediment thickness. Several freeze-thaw cycles occur at the sediment ground surface in winter due to cave temperature fluctuations. Cave air temperature measurements show that surface air enters the cave only when its temperature drops below the cave air temperature, which results in preferentially cold and oscillating winter temperatures and the formation of a cool air pool in the summer. Karst caves can contain significant amounts of silty sediments that accumulated during flood events when the cave was situated in the floodwater zone or can originate from fine rock weathering. Frost shattering of parent bedrock is a potential source for coarse debris. The cold climatic conditions that result from cave morphology sustain low ground temperatures in summer and cause freeze-thaw cycles in winter, which result in frost heaving that causes sediment sorting. Barka Cave lies close to Snežnik Mountain at an elevation of 1100 m. It is a 20 m deep and 50 long oval collapse doline with locally overhanging walls. Sorted patterned ground developed on vegetation free floor under these walls. Especially characteristic are sorted circles with ... |
format |
Conference Object |
author |
Obu, Jaroslav Kosutnik, Jure Overduin, Paul Boike, Julia Blatnik, Matej |
spellingShingle |
Obu, Jaroslav Kosutnik, Jure Overduin, Paul Boike, Julia Blatnik, Matej Sorted Paterned in Karst Caves: Development and Potential for Permafrost Research |
author_facet |
Obu, Jaroslav Kosutnik, Jure Overduin, Paul Boike, Julia Blatnik, Matej |
author_sort |
Obu, Jaroslav |
title |
Sorted Paterned in Karst Caves: Development and Potential for Permafrost Research |
title_short |
Sorted Paterned in Karst Caves: Development and Potential for Permafrost Research |
title_full |
Sorted Paterned in Karst Caves: Development and Potential for Permafrost Research |
title_fullStr |
Sorted Paterned in Karst Caves: Development and Potential for Permafrost Research |
title_full_unstemmed |
Sorted Paterned in Karst Caves: Development and Potential for Permafrost Research |
title_sort |
sorted paterned in karst caves: development and potential for permafrost research |
publishDate |
2019 |
url |
https://epic.awi.de/id/eprint/50847/ https://storage.googleapis.com/wzukusers/user-30969499/documents/76924e798fb24c8cb468f497938340ab/SouthCOP%202019%20Conference%20Handbook%20WEB.pdf https://hdl.handle.net/10013/epic.d34912d5-5544-429c-ade0-03b0ae4ae4b9 |
genre |
Ice permafrost |
genre_facet |
Ice permafrost |
op_source |
EPIC31st Southern Hemisphere Conference on Permafrost, Queenstown, New Zealand, 2019-12-04-2019-12-14 |
op_relation |
Obu, J. , Kosutnik, J. , Overduin, P. orcid:0000-0001-9849-4712 , Boike, J. orcid:0000-0002-5875-2112 and Blatnik, M. (2019) Sorted Paterned in Karst Caves: Development and Potential for Permafrost Research , 1st Southern Hemisphere Conference on Permafrost, Queenstown, New Zealand, 4 December 2019 - 14 December 2019 . hdl:10013/epic.d34912d5-5544-429c-ade0-03b0ae4ae4b9 |
_version_ |
1810449288909553664 |