Holocene glacial rebound and sea-level change in NW Europe
Observations of Late Pleistocene and Holocene sea-level change relative to the crust exhibit very considerable variations across NW Europe in consequence of the response of the Earth's crust to the deglaciation of Fennoscandia and of the water added to the oceans from the melting of all Late Pl...
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fthighwire:oai:open-archive.highwire.org:gji:103/2/451 2023-05-15T16:12:11+02:00 Holocene glacial rebound and sea-level change in NW Europe Lambeck, Kurt Johnston, Paul Nakada, Masao 1990-11-01 00:00:00.0 text/html http://gji.oxfordjournals.org/cgi/content/short/103/2/451 https://doi.org/10.1111/j.1365-246X.1990.tb01784.x en eng Oxford University Press http://gji.oxfordjournals.org/cgi/content/short/103/2/451 http://dx.doi.org/10.1111/j.1365-246X.1990.tb01784.x Copyright (C) 1990, Oxford University Press Articles TEXT 1990 fthighwire https://doi.org/10.1111/j.1365-246X.1990.tb01784.x 2015-02-28T17:53:45Z Observations of Late Pleistocene and Holocene sea-level change relative to the crust exhibit very considerable variations across NW Europe in consequence of the response of the Earth's crust to the deglaciation of Fennoscandia and of the water added to the oceans from the melting of all Late Pleistocene ice sheets. Inversion of sea-level observations from a site near the centre of the Fennoscandian ice sheet and from three sites located beyond the margin of the ice sheet at the time of maximum glaciation yield a range of plausible models for the Earth's response and for the ice models. Further constraints on this range of models is placed by a comparison of observed sea-levels with predicted values at other sites near the former ice sheet margins. The resulting mantle parameters are: upper mantle viscosity (3–5) × 1020 Pa s; lower mantle viscosity (2–7) × 1021 Pa s; lithospheric thickness 100–150 km. These values represent effective parameters that describe the response of the Earth to surface loading of short to intermediate wavelengths on a time-scale of 104 yr. The lower mantle viscosity is poorly constrained but the marked increase from upper to lower mantle is a characteristic of all plausible solutions. The inversion places a constraint on the total volume of ice in the Fennoscandian ice sheet such that the equivalent sea-level rise from this contribution is about 13–14 m. A less well-determined constraint of about 10 m equivalent sea-level rise is suggested for the Barents–Kara ice sheet. The inversion also indicates that a small amount of melt-water, from ice sheets far away from Europe, continued to be added into the oceans during Late Holocene time so as to raise the equivalent sea-level by about 3 m during the past 6000 yr, consistent with similar inversions of data from sites in the Australian and Pacific regions. Text Fennoscandia Fennoscandian Ice Sheet HighWire Press (Stanford University) Pacific Geophysical Journal International 103 2 451 468 |
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English |
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Articles Lambeck, Kurt Johnston, Paul Nakada, Masao Holocene glacial rebound and sea-level change in NW Europe |
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Articles |
description |
Observations of Late Pleistocene and Holocene sea-level change relative to the crust exhibit very considerable variations across NW Europe in consequence of the response of the Earth's crust to the deglaciation of Fennoscandia and of the water added to the oceans from the melting of all Late Pleistocene ice sheets. Inversion of sea-level observations from a site near the centre of the Fennoscandian ice sheet and from three sites located beyond the margin of the ice sheet at the time of maximum glaciation yield a range of plausible models for the Earth's response and for the ice models. Further constraints on this range of models is placed by a comparison of observed sea-levels with predicted values at other sites near the former ice sheet margins. The resulting mantle parameters are: upper mantle viscosity (3–5) × 1020 Pa s; lower mantle viscosity (2–7) × 1021 Pa s; lithospheric thickness 100–150 km. These values represent effective parameters that describe the response of the Earth to surface loading of short to intermediate wavelengths on a time-scale of 104 yr. The lower mantle viscosity is poorly constrained but the marked increase from upper to lower mantle is a characteristic of all plausible solutions. The inversion places a constraint on the total volume of ice in the Fennoscandian ice sheet such that the equivalent sea-level rise from this contribution is about 13–14 m. A less well-determined constraint of about 10 m equivalent sea-level rise is suggested for the Barents–Kara ice sheet. The inversion also indicates that a small amount of melt-water, from ice sheets far away from Europe, continued to be added into the oceans during Late Holocene time so as to raise the equivalent sea-level by about 3 m during the past 6000 yr, consistent with similar inversions of data from sites in the Australian and Pacific regions. |
format |
Text |
author |
Lambeck, Kurt Johnston, Paul Nakada, Masao |
author_facet |
Lambeck, Kurt Johnston, Paul Nakada, Masao |
author_sort |
Lambeck, Kurt |
title |
Holocene glacial rebound and sea-level change in NW Europe |
title_short |
Holocene glacial rebound and sea-level change in NW Europe |
title_full |
Holocene glacial rebound and sea-level change in NW Europe |
title_fullStr |
Holocene glacial rebound and sea-level change in NW Europe |
title_full_unstemmed |
Holocene glacial rebound and sea-level change in NW Europe |
title_sort |
holocene glacial rebound and sea-level change in nw europe |
publisher |
Oxford University Press |
publishDate |
1990 |
url |
http://gji.oxfordjournals.org/cgi/content/short/103/2/451 https://doi.org/10.1111/j.1365-246X.1990.tb01784.x |
geographic |
Pacific |
geographic_facet |
Pacific |
genre |
Fennoscandia Fennoscandian Ice Sheet |
genre_facet |
Fennoscandia Fennoscandian Ice Sheet |
op_relation |
http://gji.oxfordjournals.org/cgi/content/short/103/2/451 http://dx.doi.org/10.1111/j.1365-246X.1990.tb01784.x |
op_rights |
Copyright (C) 1990, Oxford University Press |
op_doi |
https://doi.org/10.1111/j.1365-246X.1990.tb01784.x |
container_title |
Geophysical Journal International |
container_volume |
103 |
container_issue |
2 |
container_start_page |
451 |
op_container_end_page |
468 |
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1765997439165136896 |