Dynamics of the Late Weichselian Svalbard-Barents Sea Ice Sheet and its deglaciation based on high-resolution bathymetric mapping and raised beach records
This thesis aims at giving a literature-based overview of the dynamics of the Late Weichselian Svalbard-Barents Sea Ice Sheet and its deglaciation, based on high-resolution bathymetric mapping and raised beach records. Extensive patterns of large- and medium scale submarine landforms formed by diffe...
Main Author: | |
---|---|
Other Authors: | |
Format: | Thesis |
Language: | English |
Published: |
2011
|
Subjects: | |
Online Access: | http://hdl.handle.net/1946/7521 |
id |
ftskemman:oai:skemman.is:1946/7521 |
---|---|
record_format |
openpolar |
spelling |
ftskemman:oai:skemman.is:1946/7521 2023-05-15T15:38:53+02:00 Dynamics of the Late Weichselian Svalbard-Barents Sea Ice Sheet and its deglaciation based on high-resolution bathymetric mapping and raised beach records Virkni jökulhvelsins er huldi Svalbarða og Barentshaf á hámarki síðasta jökulskeiðs og jökulhörfun þess, útfrá gögnum frá hafsbotni umhverfis Svalbarða og strandlínum Minney Sigurðardóttir 1986- Háskóli Íslands 2011-02 application/pdf http://hdl.handle.net/1946/7521 en eng http://hdl.handle.net/1946/7521 Jarðfræði Jöklar Jökulhörfun Barentshaf Svalbarði Síðjökulskeið Thesis Bachelor's 2011 ftskemman 2022-12-11T07:00:03Z This thesis aims at giving a literature-based overview of the dynamics of the Late Weichselian Svalbard-Barents Sea Ice Sheet and its deglaciation, based on high-resolution bathymetric mapping and raised beach records. Extensive patterns of large- and medium scale submarine landforms formed by differences in ice-flow regimes are shown by high-resolution bathymetric mapping from the fjords and their adjacent cross-shelf troughs around Svalbard. Mega-scale glacial lineations, lateral moraines and transverse ridges occur superimposed on the fjord, shelf and cross-shelf trough morphology of the margin. From these landforms the ice-flow and dynamics of the last ice sheet over Svalbard can be inferred. The major fjords and their adjacent cross-shelf troughs are interpreted to be the main routes for fast-flowing ice streams draining the ice sheet. Along the west coast of Svalbard, the Bellsund, Isfjorden and Kongsfjorden troughs were major drainage pathways of the ice sheet. On northern Svalbard the main drainage routes were through Woodfjorden and Wijdefjorden-Hinlopen Strait. The pattern of postglacial emergence on Svalbard is important in correlating the timing of the last deglaciation and ice extent and thickness in time and space, along with the submarine landforms. The maximum area of glacier loading is observed on Kongsøya where postglacial raised beaches occur >100 m above sea level. Deglacial unloading began on western and northern Spitsbergen c. 13–12 14C ka ago, and by c. 10.5 14C ka on eastern Svalbard. Ritgerðin dregur saman gögn sem varpa ljósi á virkni jökulhvelsins er huldi Svalbarða og Barentshaf á hámarki síðasta jökulskeiðs, einkum gögn frá hafsbotni umhverfis Svalbarða og strandlínum frá tímanum eftir jöklaleysinguna. Mynstur stórra og meðalstórra neðansjávar landforma sem myndast hafa við mismunandi aðstæður við flæði skriðjökla og ísstrauma frá jökulhvelinu koma fram við neðansjávarkortlagningu fjarða og landgrunns Svalbarða. Stór línuleg landform, jaðargarðar og þverhryggir eru algeng set- ... Thesis Barents Sea Barentshaf Bellsund glacier Hinlopen Strait Ice Sheet Isfjord* Isfjord* Isfjorden Isfjorden Kongsfjord* Kongsfjorden Kongsøya Kongsøya Sea ice Svalbard Svalbard-Barents Sea Ice sheet Wijdefjord* Woodfjord* Woodfjorden Spitsbergen Skemman (Iceland) Svalbard Barents Sea Varpa ENVELOPE(11.284,11.284,64.505,64.505) Raised Beach ENVELOPE(163.783,163.783,-74.983,-74.983) Bellsund ENVELOPE(14.226,14.226,77.662,77.662) Woodfjorden ENVELOPE(14.000,14.000,79.833,79.833) Wijdefjorden ENVELOPE(15.569,15.569,79.543,79.543) Svalbarði ENVELOPE(-21.621,-21.621,65.026,65.026) |
institution |
Open Polar |
collection |
Skemman (Iceland) |
op_collection_id |
ftskemman |
language |
English |
topic |
Jarðfræði Jöklar Jökulhörfun Barentshaf Svalbarði Síðjökulskeið |
spellingShingle |
Jarðfræði Jöklar Jökulhörfun Barentshaf Svalbarði Síðjökulskeið Minney Sigurðardóttir 1986- Dynamics of the Late Weichselian Svalbard-Barents Sea Ice Sheet and its deglaciation based on high-resolution bathymetric mapping and raised beach records |
topic_facet |
Jarðfræði Jöklar Jökulhörfun Barentshaf Svalbarði Síðjökulskeið |
description |
This thesis aims at giving a literature-based overview of the dynamics of the Late Weichselian Svalbard-Barents Sea Ice Sheet and its deglaciation, based on high-resolution bathymetric mapping and raised beach records. Extensive patterns of large- and medium scale submarine landforms formed by differences in ice-flow regimes are shown by high-resolution bathymetric mapping from the fjords and their adjacent cross-shelf troughs around Svalbard. Mega-scale glacial lineations, lateral moraines and transverse ridges occur superimposed on the fjord, shelf and cross-shelf trough morphology of the margin. From these landforms the ice-flow and dynamics of the last ice sheet over Svalbard can be inferred. The major fjords and their adjacent cross-shelf troughs are interpreted to be the main routes for fast-flowing ice streams draining the ice sheet. Along the west coast of Svalbard, the Bellsund, Isfjorden and Kongsfjorden troughs were major drainage pathways of the ice sheet. On northern Svalbard the main drainage routes were through Woodfjorden and Wijdefjorden-Hinlopen Strait. The pattern of postglacial emergence on Svalbard is important in correlating the timing of the last deglaciation and ice extent and thickness in time and space, along with the submarine landforms. The maximum area of glacier loading is observed on Kongsøya where postglacial raised beaches occur >100 m above sea level. Deglacial unloading began on western and northern Spitsbergen c. 13–12 14C ka ago, and by c. 10.5 14C ka on eastern Svalbard. Ritgerðin dregur saman gögn sem varpa ljósi á virkni jökulhvelsins er huldi Svalbarða og Barentshaf á hámarki síðasta jökulskeiðs, einkum gögn frá hafsbotni umhverfis Svalbarða og strandlínum frá tímanum eftir jöklaleysinguna. Mynstur stórra og meðalstórra neðansjávar landforma sem myndast hafa við mismunandi aðstæður við flæði skriðjökla og ísstrauma frá jökulhvelinu koma fram við neðansjávarkortlagningu fjarða og landgrunns Svalbarða. Stór línuleg landform, jaðargarðar og þverhryggir eru algeng set- ... |
author2 |
Háskóli Íslands |
format |
Thesis |
author |
Minney Sigurðardóttir 1986- |
author_facet |
Minney Sigurðardóttir 1986- |
author_sort |
Minney Sigurðardóttir 1986- |
title |
Dynamics of the Late Weichselian Svalbard-Barents Sea Ice Sheet and its deglaciation based on high-resolution bathymetric mapping and raised beach records |
title_short |
Dynamics of the Late Weichselian Svalbard-Barents Sea Ice Sheet and its deglaciation based on high-resolution bathymetric mapping and raised beach records |
title_full |
Dynamics of the Late Weichselian Svalbard-Barents Sea Ice Sheet and its deglaciation based on high-resolution bathymetric mapping and raised beach records |
title_fullStr |
Dynamics of the Late Weichselian Svalbard-Barents Sea Ice Sheet and its deglaciation based on high-resolution bathymetric mapping and raised beach records |
title_full_unstemmed |
Dynamics of the Late Weichselian Svalbard-Barents Sea Ice Sheet and its deglaciation based on high-resolution bathymetric mapping and raised beach records |
title_sort |
dynamics of the late weichselian svalbard-barents sea ice sheet and its deglaciation based on high-resolution bathymetric mapping and raised beach records |
publishDate |
2011 |
url |
http://hdl.handle.net/1946/7521 |
long_lat |
ENVELOPE(11.284,11.284,64.505,64.505) ENVELOPE(163.783,163.783,-74.983,-74.983) ENVELOPE(14.226,14.226,77.662,77.662) ENVELOPE(14.000,14.000,79.833,79.833) ENVELOPE(15.569,15.569,79.543,79.543) ENVELOPE(-21.621,-21.621,65.026,65.026) |
geographic |
Svalbard Barents Sea Varpa Raised Beach Bellsund Woodfjorden Wijdefjorden Svalbarði |
geographic_facet |
Svalbard Barents Sea Varpa Raised Beach Bellsund Woodfjorden Wijdefjorden Svalbarði |
genre |
Barents Sea Barentshaf Bellsund glacier Hinlopen Strait Ice Sheet Isfjord* Isfjord* Isfjorden Isfjorden Kongsfjord* Kongsfjorden Kongsøya Kongsøya Sea ice Svalbard Svalbard-Barents Sea Ice sheet Wijdefjord* Woodfjord* Woodfjorden Spitsbergen |
genre_facet |
Barents Sea Barentshaf Bellsund glacier Hinlopen Strait Ice Sheet Isfjord* Isfjord* Isfjorden Isfjorden Kongsfjord* Kongsfjorden Kongsøya Kongsøya Sea ice Svalbard Svalbard-Barents Sea Ice sheet Wijdefjord* Woodfjord* Woodfjorden Spitsbergen |
op_relation |
http://hdl.handle.net/1946/7521 |
_version_ |
1766370296525225984 |