Investigations of polygonal patterned ground in continuous Antarctic permafrost by means of ground penetrating radar and electrical resistivity tomography: Some unexpected correlations
The results of a combined geophysical and geomorphological investigation of thermal-contraction-crack polygons near Gondwana station (Germany) in northern Victoria Land (Antarctica) are reported. An area of about 20,000 m2 characterized by random orthogonal polygons was investigated using integrated...
Published in: | Permafrost and Periglacial Processes |
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Online Access: | https://hdl.handle.net/11383/2152471 https://doi.org/10.1002/ppp.2156 |
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ftuninsubriairis:oai:irinsubria.uninsubria.it:11383/2152471 2024-04-14T08:03:57+00:00 Investigations of polygonal patterned ground in continuous Antarctic permafrost by means of ground penetrating radar and electrical resistivity tomography: Some unexpected correlations Forte E. French H. M. Raffi R. Santin I. Guglielmin M. Forte, E. French, H. M. Raffi, R. Santin, I. Guglielmin, M. 2022 ELETTRONICO https://hdl.handle.net/11383/2152471 https://doi.org/10.1002/ppp.2156 eng eng info:eu-repo/semantics/altIdentifier/wos/WOS:000806964000001 volume:33 issue:3 firstpage:226 lastpage:240 numberofpages:15 journal:PERMAFROST AND PERIGLACIAL PROCESSES https://hdl.handle.net/11383/2152471 doi:10.1002/ppp.2156 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-85131317198 info:eu-repo/semantics/openAccess electrical resistivity tomography ground penetrating radar ice wedge permafrost polygonal pattern info:eu-repo/semantics/article 2022 ftuninsubriairis https://doi.org/10.1002/ppp.2156 2024-03-21T19:14:02Z The results of a combined geophysical and geomorphological investigation of thermal-contraction-crack polygons near Gondwana station (Germany) in northern Victoria Land (Antarctica) are reported. An area of about 20,000 m2 characterized by random orthogonal polygons was investigated using integrated ground penetrating radar, electrical resistivity tomography, geomorphological surveys, and two trench excavations. The polygons are well developed only at elevations higher than 6–7m above current sea level on Holocene-age raised beaches. It is concluded that the polygons are composite in nature because the shallow linear depressions that outline the polygons are underlain by fissures that can contain both sandy gravel and foliated ice (i.e., ice wedges) even in the same polygon network and at distances of just a few meters. Unexpectedly, most of the polygons follow the border of the raised beaches and develop in correspondence with stratigraphic layers dipping toward the sea, imaged by ground penetrating radar (GPR) profiles and interpreted as prograding layers toward the present-day shoreline. Article in Journal/Newspaper Antarc* Antarctic Antarctica Ice permafrost Victoria Land wedge* IRInSubria - Institutional Repository Insubria (Università degli Studi dell’Insubria) Antarctic Victoria Land Permafrost and Periglacial Processes 33 3 226 240 |
institution |
Open Polar |
collection |
IRInSubria - Institutional Repository Insubria (Università degli Studi dell’Insubria) |
op_collection_id |
ftuninsubriairis |
language |
English |
topic |
electrical resistivity tomography ground penetrating radar ice wedge permafrost polygonal pattern |
spellingShingle |
electrical resistivity tomography ground penetrating radar ice wedge permafrost polygonal pattern Forte E. French H. M. Raffi R. Santin I. Guglielmin M. Investigations of polygonal patterned ground in continuous Antarctic permafrost by means of ground penetrating radar and electrical resistivity tomography: Some unexpected correlations |
topic_facet |
electrical resistivity tomography ground penetrating radar ice wedge permafrost polygonal pattern |
description |
The results of a combined geophysical and geomorphological investigation of thermal-contraction-crack polygons near Gondwana station (Germany) in northern Victoria Land (Antarctica) are reported. An area of about 20,000 m2 characterized by random orthogonal polygons was investigated using integrated ground penetrating radar, electrical resistivity tomography, geomorphological surveys, and two trench excavations. The polygons are well developed only at elevations higher than 6–7m above current sea level on Holocene-age raised beaches. It is concluded that the polygons are composite in nature because the shallow linear depressions that outline the polygons are underlain by fissures that can contain both sandy gravel and foliated ice (i.e., ice wedges) even in the same polygon network and at distances of just a few meters. Unexpectedly, most of the polygons follow the border of the raised beaches and develop in correspondence with stratigraphic layers dipping toward the sea, imaged by ground penetrating radar (GPR) profiles and interpreted as prograding layers toward the present-day shoreline. |
author2 |
Forte, E. French, H. M. Raffi, R. Santin, I. Guglielmin, M. |
format |
Article in Journal/Newspaper |
author |
Forte E. French H. M. Raffi R. Santin I. Guglielmin M. |
author_facet |
Forte E. French H. M. Raffi R. Santin I. Guglielmin M. |
author_sort |
Forte E. |
title |
Investigations of polygonal patterned ground in continuous Antarctic permafrost by means of ground penetrating radar and electrical resistivity tomography: Some unexpected correlations |
title_short |
Investigations of polygonal patterned ground in continuous Antarctic permafrost by means of ground penetrating radar and electrical resistivity tomography: Some unexpected correlations |
title_full |
Investigations of polygonal patterned ground in continuous Antarctic permafrost by means of ground penetrating radar and electrical resistivity tomography: Some unexpected correlations |
title_fullStr |
Investigations of polygonal patterned ground in continuous Antarctic permafrost by means of ground penetrating radar and electrical resistivity tomography: Some unexpected correlations |
title_full_unstemmed |
Investigations of polygonal patterned ground in continuous Antarctic permafrost by means of ground penetrating radar and electrical resistivity tomography: Some unexpected correlations |
title_sort |
investigations of polygonal patterned ground in continuous antarctic permafrost by means of ground penetrating radar and electrical resistivity tomography: some unexpected correlations |
publishDate |
2022 |
url |
https://hdl.handle.net/11383/2152471 https://doi.org/10.1002/ppp.2156 |
geographic |
Antarctic Victoria Land |
geographic_facet |
Antarctic Victoria Land |
genre |
Antarc* Antarctic Antarctica Ice permafrost Victoria Land wedge* |
genre_facet |
Antarc* Antarctic Antarctica Ice permafrost Victoria Land wedge* |
op_relation |
info:eu-repo/semantics/altIdentifier/wos/WOS:000806964000001 volume:33 issue:3 firstpage:226 lastpage:240 numberofpages:15 journal:PERMAFROST AND PERIGLACIAL PROCESSES https://hdl.handle.net/11383/2152471 doi:10.1002/ppp.2156 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-85131317198 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1002/ppp.2156 |
container_title |
Permafrost and Periglacial Processes |
container_volume |
33 |
container_issue |
3 |
container_start_page |
226 |
op_container_end_page |
240 |
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1796300287768526848 |