Ice gouging effects on the eastern Arctic shelf of Russia
Results of the latest geological and geophysical marine cruises indicate activating of natural risks (or hazards) processes connected with ice gouging, permafrost melting, landslides, coastal thermoerosion and seismic activity. These processes represent great risks for all human marine activities in...
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Murmansk State Technical University
2018
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Online Access: | https://doi.org/10.21443/1560-9278-2018-21-1-139-149 https://doaj.org/article/66620268b260402ea5d6d32c46c959ba |
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ftdoajarticles:oai:doaj.org/article:66620268b260402ea5d6d32c46c959ba 2023-05-15T14:56:40+02:00 Ice gouging effects on the eastern Arctic shelf of Russia Libina N. V. Nikiforov S. L. 2018-03-01T00:00:00Z https://doi.org/10.21443/1560-9278-2018-21-1-139-149 https://doaj.org/article/66620268b260402ea5d6d32c46c959ba RU rus Murmansk State Technical University http://vestnik.mstu.edu.ru/show-eng.shtml?art=1936 https://doaj.org/toc/1560-9278 https://doaj.org/toc/1997-4736 doi:10.21443/1560-9278-2018-21-1-139-149 1560-9278 1997-4736 https://doaj.org/article/66620268b260402ea5d6d32c46c959ba Vestnik MGTU, Vol 21, Iss 1, Pp 139-149 (2018) Arctic coastal zone natural hazards mapping of seabed Northern Sea Route ice gouging echo sounding side scan sonar General Works A article 2018 ftdoajarticles https://doi.org/10.21443/1560-9278-2018-21-1-139-149 2022-12-31T14:39:09Z Results of the latest geological and geophysical marine cruises indicate activating of natural risks (or hazards) processes connected with ice gouging, permafrost melting, landslides, coastal thermoerosion and seismic activity. These processes represent great risks for all human marine activities including exploitation of the Northern Sea Route (NSR). One of the most dangerous natural processes is ice gouging, which results in the ploughing of the seabed by an underwater part of ice bodies. Ice gouging processes can create some emergency situation in the construction and operation of any underwater engineering structures. Natural seismoacoustic data obtained within the eastern Arctic shelf of Russia have recorded numerous ice gouging trails both in the coastal shallow and deep parts of the shelf as well. Modern high-resolution seismic devices have allowed receive detailed morphology parameters of underwater ice traces. The actual depth and occurrence of traces of the effect of ice formations on the bottom significantly exceed the calculated probability of occurrence according to ice conditions. Seismic data have allowed classify all these traces and subdivide them on modern coastal and ancient (or relict) deep ones. During Late Quaternary sea level down lifting the absence of cover glaciation did not exclude the presence of powerful drifting ice that produced ice gouging processes in the present deep part of the sea. Afterwards during sea level up lifting ice gouging follows to the sea level changes. In this case there could be destructed some dense clay dewatered sediment layer formed during the regression period. Further, during the repeated transgressive-regressive sea level fluctuations the generated ice traces could be frozen and thus preserved until our days. Modern coastal ice traces into marine shallow are the result of nowadays interaction of drifting ice and seabed that in conditions of global climate warming are activated and represent natural risks along the NSR. Article in Journal/Newspaper Arctic Ice Northern Sea Route permafrost Directory of Open Access Journals: DOAJ Articles Arctic Vestnik MGTU 21 1 139 149 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
Russian |
topic |
Arctic coastal zone natural hazards mapping of seabed Northern Sea Route ice gouging echo sounding side scan sonar General Works A |
spellingShingle |
Arctic coastal zone natural hazards mapping of seabed Northern Sea Route ice gouging echo sounding side scan sonar General Works A Libina N. V. Nikiforov S. L. Ice gouging effects on the eastern Arctic shelf of Russia |
topic_facet |
Arctic coastal zone natural hazards mapping of seabed Northern Sea Route ice gouging echo sounding side scan sonar General Works A |
description |
Results of the latest geological and geophysical marine cruises indicate activating of natural risks (or hazards) processes connected with ice gouging, permafrost melting, landslides, coastal thermoerosion and seismic activity. These processes represent great risks for all human marine activities including exploitation of the Northern Sea Route (NSR). One of the most dangerous natural processes is ice gouging, which results in the ploughing of the seabed by an underwater part of ice bodies. Ice gouging processes can create some emergency situation in the construction and operation of any underwater engineering structures. Natural seismoacoustic data obtained within the eastern Arctic shelf of Russia have recorded numerous ice gouging trails both in the coastal shallow and deep parts of the shelf as well. Modern high-resolution seismic devices have allowed receive detailed morphology parameters of underwater ice traces. The actual depth and occurrence of traces of the effect of ice formations on the bottom significantly exceed the calculated probability of occurrence according to ice conditions. Seismic data have allowed classify all these traces and subdivide them on modern coastal and ancient (or relict) deep ones. During Late Quaternary sea level down lifting the absence of cover glaciation did not exclude the presence of powerful drifting ice that produced ice gouging processes in the present deep part of the sea. Afterwards during sea level up lifting ice gouging follows to the sea level changes. In this case there could be destructed some dense clay dewatered sediment layer formed during the regression period. Further, during the repeated transgressive-regressive sea level fluctuations the generated ice traces could be frozen and thus preserved until our days. Modern coastal ice traces into marine shallow are the result of nowadays interaction of drifting ice and seabed that in conditions of global climate warming are activated and represent natural risks along the NSR. |
format |
Article in Journal/Newspaper |
author |
Libina N. V. Nikiforov S. L. |
author_facet |
Libina N. V. Nikiforov S. L. |
author_sort |
Libina N. V. |
title |
Ice gouging effects on the eastern Arctic shelf of Russia |
title_short |
Ice gouging effects on the eastern Arctic shelf of Russia |
title_full |
Ice gouging effects on the eastern Arctic shelf of Russia |
title_fullStr |
Ice gouging effects on the eastern Arctic shelf of Russia |
title_full_unstemmed |
Ice gouging effects on the eastern Arctic shelf of Russia |
title_sort |
ice gouging effects on the eastern arctic shelf of russia |
publisher |
Murmansk State Technical University |
publishDate |
2018 |
url |
https://doi.org/10.21443/1560-9278-2018-21-1-139-149 https://doaj.org/article/66620268b260402ea5d6d32c46c959ba |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Ice Northern Sea Route permafrost |
genre_facet |
Arctic Ice Northern Sea Route permafrost |
op_source |
Vestnik MGTU, Vol 21, Iss 1, Pp 139-149 (2018) |
op_relation |
http://vestnik.mstu.edu.ru/show-eng.shtml?art=1936 https://doaj.org/toc/1560-9278 https://doaj.org/toc/1997-4736 doi:10.21443/1560-9278-2018-21-1-139-149 1560-9278 1997-4736 https://doaj.org/article/66620268b260402ea5d6d32c46c959ba |
op_doi |
https://doi.org/10.21443/1560-9278-2018-21-1-139-149 |
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