Holocene glacier history of Svalbard: Retracing the style of (de-)glaciation
Through the Holocene, Svalbard glaciers have exhibited at least two phases of re-advance, one during the Early Holocene and another throughout the entire Late Holocene. No geomorphological features have been identified corresponding to glacier re-advances between 9.0 – 4.5 ka BP. The Early Holocene...
Published in: | Boreas |
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Main Author: | |
Format: | Doctoral or Postdoctoral Thesis |
Language: | English |
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UiT Norges arktiske universitet
2018
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Online Access: | https://hdl.handle.net/10037/14378 |
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ftunivtroemsoe:oai:munin.uit.no:10037/14378 |
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record_format |
openpolar |
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Open Polar |
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University of Tromsø: Munin Open Research Archive |
op_collection_id |
ftunivtroemsoe |
language |
English |
topic |
VDP::Mathematics and natural science: 400::Geosciences: 450::Quaternary geology glaciology: 465 VDP::Matematikk og Naturvitenskap: 400::Geofag: 450::Kvartærgeologi glasiologi: 465 DOKTOR-004 |
spellingShingle |
VDP::Mathematics and natural science: 400::Geosciences: 450::Quaternary geology glaciology: 465 VDP::Matematikk og Naturvitenskap: 400::Geofag: 450::Kvartærgeologi glasiologi: 465 DOKTOR-004 Farnsworth, Wesley Randall Holocene glacier history of Svalbard: Retracing the style of (de-)glaciation |
topic_facet |
VDP::Mathematics and natural science: 400::Geosciences: 450::Quaternary geology glaciology: 465 VDP::Matematikk og Naturvitenskap: 400::Geofag: 450::Kvartærgeologi glasiologi: 465 DOKTOR-004 |
description |
Through the Holocene, Svalbard glaciers have exhibited at least two phases of re-advance, one during the Early Holocene and another throughout the entire Late Holocene. No geomorphological features have been identified corresponding to glacier re-advances between 9.0 – 4.5 ka BP. The Early Holocene glacier re-advances identified across Svalbard and they correspond to a diverse range of glacier sizes. With our current level of age constraint, these ice marginal fluctuations do not appear synchronous. Furthermore, the Early Holocene climate is believed to warm, unfavorable for glacier growth, and characterized by deglaciation. Early Holocene glacier re-advances appear to relate to the time-transgressive nature of deglaciation, correspond to dynamics (not mass balance) and reflect the complex style of ice-mass-loss during a changing climate. Landforms and deposits from glaciers re-advancing during the Late Holocene have been the primary focus of Holocene glacial studies. Glacier re-advances and corresponding deposits have been attributed to episodic Neoglacial cooling and the Little Ice Age (LIA). The majority of Late Holocene glacier re-advances have been dated to between 4.0 - 0.5 ka BP with the highest frequency of re-advances constrained to 1.0 – 0.5 ka BP, during the first half of the LIA. It has been suggested that glacial landforms and deposits from LIA re-advances indicate rapid and dynamic glacier behavior, and in some cases surge-type events. During the 20th century (i.e. post-LIA), Svalbard glaciers have exhibited widespread negative mass balance, ice marginal retreat, and glacier thinning. This phase of retreat has had a direct influence on glacier thermal regime, hydrologic system and surface profile. Through the 20th century, some Svalbard glaciers have continued to exhibit surge-type re-advances. Several glaciers have exhibited this behavior numerous times. These glacio-dynamic re-advances have been un-sustained and each subsequent surge has been less extensive then prior surges. Consequently, and despite re-advance, glaciers reflect a continual phase of ice-mass-loss in a periodic fashion. |
format |
Doctoral or Postdoctoral Thesis |
author |
Farnsworth, Wesley Randall |
author_facet |
Farnsworth, Wesley Randall |
author_sort |
Farnsworth, Wesley Randall |
title |
Holocene glacier history of Svalbard: Retracing the style of (de-)glaciation |
title_short |
Holocene glacier history of Svalbard: Retracing the style of (de-)glaciation |
title_full |
Holocene glacier history of Svalbard: Retracing the style of (de-)glaciation |
title_fullStr |
Holocene glacier history of Svalbard: Retracing the style of (de-)glaciation |
title_full_unstemmed |
Holocene glacier history of Svalbard: Retracing the style of (de-)glaciation |
title_sort |
holocene glacier history of svalbard: retracing the style of (de-)glaciation |
publisher |
UiT Norges arktiske universitet |
publishDate |
2018 |
url |
https://hdl.handle.net/10037/14378 |
geographic |
Svalbard |
geographic_facet |
Svalbard |
genre |
glacier Svalbard |
genre_facet |
glacier Svalbard |
op_relation |
Paper I: Farnsworth, W.R., Ingólfsson, Ó., Retelle, M., Allaart, L., Håkansson, L. & Schomacker, A. (2018). Svalbard glaciers re-advanced during the Pleistocene-Holocene transition. Boreas, 47 (4), 1022-1032. The article with supporting information is available in the thesis introduction. Also available at https://doi.org/10.1111/bor.12326. Paper II: Larsen, E., Lyså, A., Rubensdotter, L., Farnsworth, W.R., Jensen, M., Nadeau, M. & Ottesen, D. (2018). Late glacial and Holocene glacier activity in the Van Mijenfjorden area, western Svalbard. arktos, 4 (1). Full text not available due to publisher restrictions. Published version with supplementary material available at https://doi.org/10.1007/s41063-018-0042-2. Paper III: Farnsworth, W.R., Ingólfsson, Ó., Noormets, R., Allaart, L., Alexanderson, H., Henriksen, M. & Schomacker, A. (2017). Dynamic Holocene glacial history of St. Jonsfjorden, Svalbard. Boreas, 46 (3), 585-603. The article is available in the thesis introduction. Also available at https://doi.org/10.1111/bor.12269. Paper IV: Farnsworth, W.R., Ingólfsson, Ó., Retelle, M. & Schomacker, A. (2016). Over 400 previously undocumented Svalbard surge-type glaciers identified. Geomorphology, 264 , 52-60. The article with appendix and supplementary data is available in the thesis introduction. Also available at https://doi.org/10.1016/j.geomorph.2016.03.025. Paper V: Farnsworth, W.R., Ingólfsson, Ó., Alexanderson, H., Forwick, M., Noormets, R., Retelle, M. & Schomacker, A. Holocene glacial and climate history of Svalbard - status, perspectives and challenges. (Manuscript in prep.). 978-82-8236-324-2 (trykt) og 978-82-8236-325-9 (pdf) https://hdl.handle.net/10037/14378 |
op_rights |
openAccess Copyright 2018 The Author(s) |
container_title |
Boreas |
container_volume |
47 |
container_issue |
4 |
container_start_page |
1022 |
op_container_end_page |
1032 |
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ftunivtroemsoe:oai:munin.uit.no:10037/14378 2023-05-15T16:22:06+02:00 Holocene glacier history of Svalbard: Retracing the style of (de-)glaciation Farnsworth, Wesley Randall 2018-12-06 https://hdl.handle.net/10037/14378 eng eng UiT Norges arktiske universitet UiT The Arctic University of Norway Paper I: Farnsworth, W.R., Ingólfsson, Ó., Retelle, M., Allaart, L., Håkansson, L. & Schomacker, A. (2018). Svalbard glaciers re-advanced during the Pleistocene-Holocene transition. Boreas, 47 (4), 1022-1032. The article with supporting information is available in the thesis introduction. Also available at https://doi.org/10.1111/bor.12326. Paper II: Larsen, E., Lyså, A., Rubensdotter, L., Farnsworth, W.R., Jensen, M., Nadeau, M. & Ottesen, D. (2018). Late glacial and Holocene glacier activity in the Van Mijenfjorden area, western Svalbard. arktos, 4 (1). Full text not available due to publisher restrictions. Published version with supplementary material available at https://doi.org/10.1007/s41063-018-0042-2. Paper III: Farnsworth, W.R., Ingólfsson, Ó., Noormets, R., Allaart, L., Alexanderson, H., Henriksen, M. & Schomacker, A. (2017). Dynamic Holocene glacial history of St. Jonsfjorden, Svalbard. Boreas, 46 (3), 585-603. The article is available in the thesis introduction. Also available at https://doi.org/10.1111/bor.12269. Paper IV: Farnsworth, W.R., Ingólfsson, Ó., Retelle, M. & Schomacker, A. (2016). Over 400 previously undocumented Svalbard surge-type glaciers identified. Geomorphology, 264 , 52-60. The article with appendix and supplementary data is available in the thesis introduction. Also available at https://doi.org/10.1016/j.geomorph.2016.03.025. Paper V: Farnsworth, W.R., Ingólfsson, Ó., Alexanderson, H., Forwick, M., Noormets, R., Retelle, M. & Schomacker, A. Holocene glacial and climate history of Svalbard - status, perspectives and challenges. (Manuscript in prep.). 978-82-8236-324-2 (trykt) og 978-82-8236-325-9 (pdf) https://hdl.handle.net/10037/14378 openAccess Copyright 2018 The Author(s) VDP::Mathematics and natural science: 400::Geosciences: 450::Quaternary geology glaciology: 465 VDP::Matematikk og Naturvitenskap: 400::Geofag: 450::Kvartærgeologi glasiologi: 465 DOKTOR-004 Doctoral thesis Doktorgradsavhandling 2018 ftunivtroemsoe 2021-06-25T17:56:16Z Through the Holocene, Svalbard glaciers have exhibited at least two phases of re-advance, one during the Early Holocene and another throughout the entire Late Holocene. No geomorphological features have been identified corresponding to glacier re-advances between 9.0 – 4.5 ka BP. The Early Holocene glacier re-advances identified across Svalbard and they correspond to a diverse range of glacier sizes. With our current level of age constraint, these ice marginal fluctuations do not appear synchronous. Furthermore, the Early Holocene climate is believed to warm, unfavorable for glacier growth, and characterized by deglaciation. Early Holocene glacier re-advances appear to relate to the time-transgressive nature of deglaciation, correspond to dynamics (not mass balance) and reflect the complex style of ice-mass-loss during a changing climate. Landforms and deposits from glaciers re-advancing during the Late Holocene have been the primary focus of Holocene glacial studies. Glacier re-advances and corresponding deposits have been attributed to episodic Neoglacial cooling and the Little Ice Age (LIA). The majority of Late Holocene glacier re-advances have been dated to between 4.0 - 0.5 ka BP with the highest frequency of re-advances constrained to 1.0 – 0.5 ka BP, during the first half of the LIA. It has been suggested that glacial landforms and deposits from LIA re-advances indicate rapid and dynamic glacier behavior, and in some cases surge-type events. During the 20th century (i.e. post-LIA), Svalbard glaciers have exhibited widespread negative mass balance, ice marginal retreat, and glacier thinning. This phase of retreat has had a direct influence on glacier thermal regime, hydrologic system and surface profile. Through the 20th century, some Svalbard glaciers have continued to exhibit surge-type re-advances. Several glaciers have exhibited this behavior numerous times. These glacio-dynamic re-advances have been un-sustained and each subsequent surge has been less extensive then prior surges. Consequently, and despite re-advance, glaciers reflect a continual phase of ice-mass-loss in a periodic fashion. Doctoral or Postdoctoral Thesis glacier Svalbard University of Tromsø: Munin Open Research Archive Svalbard Boreas 47 4 1022 1032 |