Classification of glacial seafloor features in north east Greenland continental shelf based on bathymetric data
Bathymetric survey of expeditions by RV Polarstern and RRS James Clark Ross show glacial seafloor features on North East Greenland Continental Shelf. The features are forms of lineations, transverse ridges, winding ridges and scours. Bathymetric Position Index grid and hillshade grid of multibeam ec...
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ftawi:oai:epic.awi.de:35950 2023-05-15T16:03:28+02:00 Classification of glacial seafloor features in north east Greenland continental shelf based on bathymetric data Matahelemual, Dhira A. 2014-07 https://epic.awi.de/id/eprint/35950/ https://hdl.handle.net/10013/epic.43877 unknown Matahelemual, D. A. (2014) Classification of glacial seafloor features in north east Greenland continental shelf based on bathymetric data , Master thesis, HafenCity Universität Hamburg. hdl:10013/epic.43877 EPIC392 p. Thesis notRev 2014 ftawi 2021-12-24T15:39:40Z Bathymetric survey of expeditions by RV Polarstern and RRS James Clark Ross show glacial seafloor features on North East Greenland Continental Shelf. The features are forms of lineations, transverse ridges, winding ridges and scours. Bathymetric Position Index grid and hillshade grid of multibeam echo sounders data enhance the seafloor visualization for interpretation of the features. The interpreted features are given classifications of mega-scale lineations, moraines, eskers and iceberg scours. The farthest feature located near the shelf break indicates that the Greenland Ice Sheet in North East Greenland extends till there. This finding is an annex to previous studies mentioning Greenland Ice Sheet covered the inner-middle continental shelf of North East Greenland based on seafloor morphology and covered till the shelf edge based on sedimentological studies. Glacial seafloor features also reveal the glacial dynamics present. Bathymetric data map mega-scale lineations along Westwind Troughs and the Intra-troughs. Their presence indicate former ice streams along the troughs. The ice stream in Westwind Trough is retreating due to evidence of moraines located there. Eskers also reveal an act of ice surge in Westwind Trough. Icebergs scours are abundant in shallow banks and near the shelf break. Thesis East Greenland Greenland Ice Sheet Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) Greenland |
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 |
Bathymetric survey of expeditions by RV Polarstern and RRS James Clark Ross show glacial seafloor features on North East Greenland Continental Shelf. The features are forms of lineations, transverse ridges, winding ridges and scours. Bathymetric Position Index grid and hillshade grid of multibeam echo sounders data enhance the seafloor visualization for interpretation of the features. The interpreted features are given classifications of mega-scale lineations, moraines, eskers and iceberg scours. The farthest feature located near the shelf break indicates that the Greenland Ice Sheet in North East Greenland extends till there. This finding is an annex to previous studies mentioning Greenland Ice Sheet covered the inner-middle continental shelf of North East Greenland based on seafloor morphology and covered till the shelf edge based on sedimentological studies. Glacial seafloor features also reveal the glacial dynamics present. Bathymetric data map mega-scale lineations along Westwind Troughs and the Intra-troughs. Their presence indicate former ice streams along the troughs. The ice stream in Westwind Trough is retreating due to evidence of moraines located there. Eskers also reveal an act of ice surge in Westwind Trough. Icebergs scours are abundant in shallow banks and near the shelf break. |
format |
Thesis |
author |
Matahelemual, Dhira A. |
spellingShingle |
Matahelemual, Dhira A. Classification of glacial seafloor features in north east Greenland continental shelf based on bathymetric data |
author_facet |
Matahelemual, Dhira A. |
author_sort |
Matahelemual, Dhira A. |
title |
Classification of glacial seafloor features in north east Greenland continental shelf based on bathymetric data |
title_short |
Classification of glacial seafloor features in north east Greenland continental shelf based on bathymetric data |
title_full |
Classification of glacial seafloor features in north east Greenland continental shelf based on bathymetric data |
title_fullStr |
Classification of glacial seafloor features in north east Greenland continental shelf based on bathymetric data |
title_full_unstemmed |
Classification of glacial seafloor features in north east Greenland continental shelf based on bathymetric data |
title_sort |
classification of glacial seafloor features in north east greenland continental shelf based on bathymetric data |
publishDate |
2014 |
url |
https://epic.awi.de/id/eprint/35950/ https://hdl.handle.net/10013/epic.43877 |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
East Greenland Greenland Ice Sheet |
genre_facet |
East Greenland Greenland Ice Sheet |
op_source |
EPIC392 p. |
op_relation |
Matahelemual, D. A. (2014) Classification of glacial seafloor features in north east Greenland continental shelf based on bathymetric data , Master thesis, HafenCity Universität Hamburg. hdl:10013/epic.43877 |
_version_ |
1766399132436529152 |