ANTARCTIC SUBGLACIAL AND SUBMARINE RELIEF: GEOMORPHOLOGICAL MAPPING OF PRE-GLACIAL RIVER VALLEYS
This pilot project was a part of a larger complex geomorphologic mapping of the entire Antarctic continent conducted by the team of researchers from St. Petersburg (Russia). Radar profiling data transformed into digital topographic models were utilized as raw materials for the research. Submarine an...
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Laboratory of Complex Mapping, Faculty of Geography, MSU
2017
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Online Access: | https://doi.org/10.24057/2414-9179-2017-1-23-393-404 https://doaj.org/article/e8ec691c7f324ff5b02f4bef83d2dbe6 |
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ftdoajarticles:oai:doaj.org/article:e8ec691c7f324ff5b02f4bef83d2dbe6 2023-05-15T13:35:00+02:00 ANTARCTIC SUBGLACIAL AND SUBMARINE RELIEF: GEOMORPHOLOGICAL MAPPING OF PRE-GLACIAL RIVER VALLEYS A. N. Lastochkin A. I. Zhirov S. F. Boltramovich 2017-01-01T00:00:00Z https://doi.org/10.24057/2414-9179-2017-1-23-393-404 https://doaj.org/article/e8ec691c7f324ff5b02f4bef83d2dbe6 EN RU eng rus Laboratory of Complex Mapping, Faculty of Geography, MSU http://intercarto.msu.ru/jour/article/view/509 https://doaj.org/toc/2414-9179 https://doaj.org/toc/2414-9209 2414-9179 2414-9209 doi:10.24057/2414-9179-2017-1-23-393-404 https://doaj.org/article/e8ec691c7f324ff5b02f4bef83d2dbe6 InterCarto. InterGIS, Vol 23, Iss 1, Pp 393-404 (2017) the Antarctic subglacial geomorphology geomorphological mapping pre-glacial river valleys Geography (General) G1-922 article 2017 ftdoajarticles https://doi.org/10.24057/2414-9179-2017-1-23-393-404 2022-12-31T04:59:15Z This pilot project was a part of a larger complex geomorphologic mapping of the entire Antarctic continent conducted by the team of researchers from St. Petersburg (Russia). Radar profiling data transformed into digital topographic models were utilized as raw materials for the research. Submarine and subglacial geomorphology is a scientific branch that could provide new findings while studying palaeogeographic environments of the Antarctic. River valleys are one of the clearest evidences of the pre-glacial development of territories. Researchers can initially investigate them using the system-morphological approach established and developed by A. N. Lastochkin. This clear methodological base and corresponding set of mapping methods – including creation of structural networks, compiling of difference maps, analysis of lineaments and vector fields – made it possible to map the main river basins, which are now buried under the ice sheet or represented by only detrital cones on the continental slopes. Such large drainage systems were identified and initially described within the entire Antarctic continent. They are, with no doubt, of pre-glacial age and have only fluvial nature. One of Antarctic regions – Lambert Graben – was studied more closely. We identified there two generations of valleys: river preglacial and pre-icecover ones. The latter are presumably associated with mountain glaciers preceding the formation of the ice sheet. Newer and more detailed profiling data passed through a prism of the system-morphological approach that can multiply our knowledge of subglacial topography as well as the past of Antarctica. Article in Journal/Newspaper Antarc* Antarctic Antarctica Ice Sheet Directory of Open Access Journals: DOAJ Articles Antarctic The Antarctic Proceedings of the International conference “InterCarto/InterGIS” 1 23 393 404 |
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Open Polar |
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Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English Russian |
topic |
the Antarctic subglacial geomorphology geomorphological mapping pre-glacial river valleys Geography (General) G1-922 |
spellingShingle |
the Antarctic subglacial geomorphology geomorphological mapping pre-glacial river valleys Geography (General) G1-922 A. N. Lastochkin A. I. Zhirov S. F. Boltramovich ANTARCTIC SUBGLACIAL AND SUBMARINE RELIEF: GEOMORPHOLOGICAL MAPPING OF PRE-GLACIAL RIVER VALLEYS |
topic_facet |
the Antarctic subglacial geomorphology geomorphological mapping pre-glacial river valleys Geography (General) G1-922 |
description |
This pilot project was a part of a larger complex geomorphologic mapping of the entire Antarctic continent conducted by the team of researchers from St. Petersburg (Russia). Radar profiling data transformed into digital topographic models were utilized as raw materials for the research. Submarine and subglacial geomorphology is a scientific branch that could provide new findings while studying palaeogeographic environments of the Antarctic. River valleys are one of the clearest evidences of the pre-glacial development of territories. Researchers can initially investigate them using the system-morphological approach established and developed by A. N. Lastochkin. This clear methodological base and corresponding set of mapping methods – including creation of structural networks, compiling of difference maps, analysis of lineaments and vector fields – made it possible to map the main river basins, which are now buried under the ice sheet or represented by only detrital cones on the continental slopes. Such large drainage systems were identified and initially described within the entire Antarctic continent. They are, with no doubt, of pre-glacial age and have only fluvial nature. One of Antarctic regions – Lambert Graben – was studied more closely. We identified there two generations of valleys: river preglacial and pre-icecover ones. The latter are presumably associated with mountain glaciers preceding the formation of the ice sheet. Newer and more detailed profiling data passed through a prism of the system-morphological approach that can multiply our knowledge of subglacial topography as well as the past of Antarctica. |
format |
Article in Journal/Newspaper |
author |
A. N. Lastochkin A. I. Zhirov S. F. Boltramovich |
author_facet |
A. N. Lastochkin A. I. Zhirov S. F. Boltramovich |
author_sort |
A. N. Lastochkin |
title |
ANTARCTIC SUBGLACIAL AND SUBMARINE RELIEF: GEOMORPHOLOGICAL MAPPING OF PRE-GLACIAL RIVER VALLEYS |
title_short |
ANTARCTIC SUBGLACIAL AND SUBMARINE RELIEF: GEOMORPHOLOGICAL MAPPING OF PRE-GLACIAL RIVER VALLEYS |
title_full |
ANTARCTIC SUBGLACIAL AND SUBMARINE RELIEF: GEOMORPHOLOGICAL MAPPING OF PRE-GLACIAL RIVER VALLEYS |
title_fullStr |
ANTARCTIC SUBGLACIAL AND SUBMARINE RELIEF: GEOMORPHOLOGICAL MAPPING OF PRE-GLACIAL RIVER VALLEYS |
title_full_unstemmed |
ANTARCTIC SUBGLACIAL AND SUBMARINE RELIEF: GEOMORPHOLOGICAL MAPPING OF PRE-GLACIAL RIVER VALLEYS |
title_sort |
antarctic subglacial and submarine relief: geomorphological mapping of pre-glacial river valleys |
publisher |
Laboratory of Complex Mapping, Faculty of Geography, MSU |
publishDate |
2017 |
url |
https://doi.org/10.24057/2414-9179-2017-1-23-393-404 https://doaj.org/article/e8ec691c7f324ff5b02f4bef83d2dbe6 |
geographic |
Antarctic The Antarctic |
geographic_facet |
Antarctic The Antarctic |
genre |
Antarc* Antarctic Antarctica Ice Sheet |
genre_facet |
Antarc* Antarctic Antarctica Ice Sheet |
op_source |
InterCarto. InterGIS, Vol 23, Iss 1, Pp 393-404 (2017) |
op_relation |
http://intercarto.msu.ru/jour/article/view/509 https://doaj.org/toc/2414-9179 https://doaj.org/toc/2414-9209 2414-9179 2414-9209 doi:10.24057/2414-9179-2017-1-23-393-404 https://doaj.org/article/e8ec691c7f324ff5b02f4bef83d2dbe6 |
op_doi |
https://doi.org/10.24057/2414-9179-2017-1-23-393-404 |
container_title |
Proceedings of the International conference “InterCarto/InterGIS” |
container_volume |
1 |
container_issue |
23 |
container_start_page |
393 |
op_container_end_page |
404 |
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1766060076875907072 |