Genesis, Morphology, Age and Distribution of Cryogenic Mounds on Kaffiøyra and Hermansenøya, Northwest Svalbard
Abstract Three main types of cryogenic mounds on the coastal plains (strandflats) of Kaffiøyra and Hermansenøya on northwest Svalbard are distinguished according to their distribution, morphology, internal structure, genesis and age. The mounds include aggradational forms: a previously unrecognised...
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crwiley:10.1002/ppp.1850 2024-06-02T08:07:07+00:00 Genesis, Morphology, Age and Distribution of Cryogenic Mounds on Kaffiøyra and Hermansenøya, Northwest Svalbard Jaworski, Tomasz Chutkowski, Karol 2015 http://dx.doi.org/10.1002/ppp.1850 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fppp.1850 https://onlinelibrary.wiley.com/doi/pdf/10.1002/ppp.1850 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Permafrost and Periglacial Processes volume 26, issue 4, page 304-320 ISSN 1045-6740 1099-1530 journal-article 2015 crwiley https://doi.org/10.1002/ppp.1850 2024-05-03T10:46:05Z Abstract Three main types of cryogenic mounds on the coastal plains (strandflats) of Kaffiøyra and Hermansenøya on northwest Svalbard are distinguished according to their distribution, morphology, internal structure, genesis and age. The mounds include aggradational forms: a previously unrecognised hydraulic pingo, frost peat mounds with either a minerogenic core (mineral palsas) or an ice/ice‐peat core, and earth hummocks. Previously unrecognised degradational features represent thermokarst mounds. Individual types of mounds have developed in different geomorphological locations: (i) in the forefield of a retreating subpolar glacier over fault zones (hydraulic pingo 7.8 m high); (ii) on peat bogs (two types of frost peat mounds 0.7–1.3 m high and thermokarst mounds 0.5–0.8 m high); (iii) on raised beaches (high earth hummocks 0.5–1.0 m high); and (iv) on flat and wet tundra surfaces (miniature earth hummocks 0.2–0.3 m high). Although large, pingo‐type mounds are typical on Svalbard, only one pingo occurs in the study area because of lithological, hydrological and geomorphological conditions of the area. These conditions, together with thick permafrost, do not allow the outflow of sub‐ and intra‐permafrost water to the surface. Some cryogenic mounds are the result of climate fluctuations in the recent part of the Holocene (Little Ice Age). The oldest frost peat mounds from Hermansenøya developed 3.0–2.5 kyr BP, while the pingo is still growing. Copyright © 2015 John Wiley & Sons, Ltd. Article in Journal/Newspaper glacier Ice palsas permafrost Permafrost and Periglacial Processes Svalbard Thermokarst Tundra Wiley Online Library Hermansenøya ENVELOPE(12.198,12.198,78.552,78.552) Kaffiøyra ENVELOPE(12.002,12.002,78.627,78.627) Svalbard Permafrost and Periglacial Processes 26 4 304 320 |
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Open Polar |
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Wiley Online Library |
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crwiley |
language |
English |
description |
Abstract Three main types of cryogenic mounds on the coastal plains (strandflats) of Kaffiøyra and Hermansenøya on northwest Svalbard are distinguished according to their distribution, morphology, internal structure, genesis and age. The mounds include aggradational forms: a previously unrecognised hydraulic pingo, frost peat mounds with either a minerogenic core (mineral palsas) or an ice/ice‐peat core, and earth hummocks. Previously unrecognised degradational features represent thermokarst mounds. Individual types of mounds have developed in different geomorphological locations: (i) in the forefield of a retreating subpolar glacier over fault zones (hydraulic pingo 7.8 m high); (ii) on peat bogs (two types of frost peat mounds 0.7–1.3 m high and thermokarst mounds 0.5–0.8 m high); (iii) on raised beaches (high earth hummocks 0.5–1.0 m high); and (iv) on flat and wet tundra surfaces (miniature earth hummocks 0.2–0.3 m high). Although large, pingo‐type mounds are typical on Svalbard, only one pingo occurs in the study area because of lithological, hydrological and geomorphological conditions of the area. These conditions, together with thick permafrost, do not allow the outflow of sub‐ and intra‐permafrost water to the surface. Some cryogenic mounds are the result of climate fluctuations in the recent part of the Holocene (Little Ice Age). The oldest frost peat mounds from Hermansenøya developed 3.0–2.5 kyr BP, while the pingo is still growing. Copyright © 2015 John Wiley & Sons, Ltd. |
format |
Article in Journal/Newspaper |
author |
Jaworski, Tomasz Chutkowski, Karol |
spellingShingle |
Jaworski, Tomasz Chutkowski, Karol Genesis, Morphology, Age and Distribution of Cryogenic Mounds on Kaffiøyra and Hermansenøya, Northwest Svalbard |
author_facet |
Jaworski, Tomasz Chutkowski, Karol |
author_sort |
Jaworski, Tomasz |
title |
Genesis, Morphology, Age and Distribution of Cryogenic Mounds on Kaffiøyra and Hermansenøya, Northwest Svalbard |
title_short |
Genesis, Morphology, Age and Distribution of Cryogenic Mounds on Kaffiøyra and Hermansenøya, Northwest Svalbard |
title_full |
Genesis, Morphology, Age and Distribution of Cryogenic Mounds on Kaffiøyra and Hermansenøya, Northwest Svalbard |
title_fullStr |
Genesis, Morphology, Age and Distribution of Cryogenic Mounds on Kaffiøyra and Hermansenøya, Northwest Svalbard |
title_full_unstemmed |
Genesis, Morphology, Age and Distribution of Cryogenic Mounds on Kaffiøyra and Hermansenøya, Northwest Svalbard |
title_sort |
genesis, morphology, age and distribution of cryogenic mounds on kaffiøyra and hermansenøya, northwest svalbard |
publisher |
Wiley |
publishDate |
2015 |
url |
http://dx.doi.org/10.1002/ppp.1850 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fppp.1850 https://onlinelibrary.wiley.com/doi/pdf/10.1002/ppp.1850 |
long_lat |
ENVELOPE(12.198,12.198,78.552,78.552) ENVELOPE(12.002,12.002,78.627,78.627) |
geographic |
Hermansenøya Kaffiøyra Svalbard |
geographic_facet |
Hermansenøya Kaffiøyra Svalbard |
genre |
glacier Ice palsas permafrost Permafrost and Periglacial Processes Svalbard Thermokarst Tundra |
genre_facet |
glacier Ice palsas permafrost Permafrost and Periglacial Processes Svalbard Thermokarst Tundra |
op_source |
Permafrost and Periglacial Processes volume 26, issue 4, page 304-320 ISSN 1045-6740 1099-1530 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1002/ppp.1850 |
container_title |
Permafrost and Periglacial Processes |
container_volume |
26 |
container_issue |
4 |
container_start_page |
304 |
op_container_end_page |
320 |
_version_ |
1800752131444047872 |