Indication of Holocene sea-level stability in the southern Laptev Sea recorded by beach ridges in north-east Siberia, Russia
The rapid warming of the Arctic may affect the stability of coastal geomorphological systems. Prograded sequences of wave-built deposits, so-called beach-ridge systems, preserve a proxy record of the long-term variability in the drivers of coastal evolution. Information on relative sea level (RSL),...
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Norwegian Polar Institute
2019
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Online Access: | https://doi.org/10.33265/polar.v38.3379 https://doaj.org/article/0d28ea4898cf4299bb1406cbbe19e3b9 |
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fttriple:oai:gotriple.eu:oai:doaj.org/article:0d28ea4898cf4299bb1406cbbe19e3b9 2023-05-15T14:52:03+02:00 Indication of Holocene sea-level stability in the southern Laptev Sea recorded by beach ridges in north-east Siberia, Russia Lasse Sander Rune Michaelis Svenja Papenmeier Sergey Pravkin Gesine Mollenhauer Hendrik Grotheer Torben Gentz Karen Helen Wiltshire 2019-11-01 https://doi.org/10.33265/polar.v38.3379 https://doaj.org/article/0d28ea4898cf4299bb1406cbbe19e3b9 en eng Norwegian Polar Institute 1751-8369 doi:10.33265/polar.v38.3379 https://doaj.org/article/0d28ea4898cf4299bb1406cbbe19e3b9 undefined Polar Research, Vol 38, Iss 0, Pp 1-13 (2019) arctic coastal change gravel beaches coastal geomorphology wave climate lena delta buor khaya bay geo anthro-bio Journal Article https://vocabularies.coar-repositories.org/resource_types/c_6501/ 2019 fttriple https://doi.org/10.33265/polar.v38.3379 2023-01-22T17:53:01Z The rapid warming of the Arctic may affect the stability of coastal geomorphological systems. Prograded sequences of wave-built deposits, so-called beach-ridge systems, preserve a proxy record of the long-term variability in the drivers of coastal evolution. Information on relative sea level (RSL), climate forcing and sediment supply can be reconstructed from these archives. Buor Khaya Bay is one of the few places along the Siberian Arctic coast where wide beach-ridge systems exist. A previously undescribed field site was surveyed in order to obtain information on the geomorphological processes along the modern shoreline under the current environmental conditions, and the characteristics of the Holocene beach-ridge deposits (e.g., elevation, sediment and age). Our data show that the system formed under storm wave/surge conditions. The beach ridges prograded ca. 1100 m between 6200 and 2600 cal yr BP, with only minor variations in surface elevation. This suggests a continuous and high sediment supply and similar storm wave run-up heights during that time. This relationship is interpreted as indicating RSL stability at a similar-to-present elevation during the period of beach-ridge formation. The hiatus in coastal progradation is concurrent with a deteriorating climate (cooling) in the Laptev Sea area and our data hence suggest increased rates of coastal change during periods of warmer climate conditions. Our study illustrates the potential of coastal sedimentary archives to provide a more complete view of the forcing, resilience and long-term evolution of unconsolidated Arctic coasts in a changing environment. Article in Journal/Newspaper Arctic laptev Laptev Sea lena delta Polar Research Siberia Unknown Arctic Buor-Khaya ENVELOPE(127.803,127.803,72.287,72.287) Khaya ENVELOPE(135.167,135.167,60.567,60.567) Laptev Sea Polar Research 38 0 |
institution |
Open Polar |
collection |
Unknown |
op_collection_id |
fttriple |
language |
English |
topic |
arctic coastal change gravel beaches coastal geomorphology wave climate lena delta buor khaya bay geo anthro-bio |
spellingShingle |
arctic coastal change gravel beaches coastal geomorphology wave climate lena delta buor khaya bay geo anthro-bio Lasse Sander Rune Michaelis Svenja Papenmeier Sergey Pravkin Gesine Mollenhauer Hendrik Grotheer Torben Gentz Karen Helen Wiltshire Indication of Holocene sea-level stability in the southern Laptev Sea recorded by beach ridges in north-east Siberia, Russia |
topic_facet |
arctic coastal change gravel beaches coastal geomorphology wave climate lena delta buor khaya bay geo anthro-bio |
description |
The rapid warming of the Arctic may affect the stability of coastal geomorphological systems. Prograded sequences of wave-built deposits, so-called beach-ridge systems, preserve a proxy record of the long-term variability in the drivers of coastal evolution. Information on relative sea level (RSL), climate forcing and sediment supply can be reconstructed from these archives. Buor Khaya Bay is one of the few places along the Siberian Arctic coast where wide beach-ridge systems exist. A previously undescribed field site was surveyed in order to obtain information on the geomorphological processes along the modern shoreline under the current environmental conditions, and the characteristics of the Holocene beach-ridge deposits (e.g., elevation, sediment and age). Our data show that the system formed under storm wave/surge conditions. The beach ridges prograded ca. 1100 m between 6200 and 2600 cal yr BP, with only minor variations in surface elevation. This suggests a continuous and high sediment supply and similar storm wave run-up heights during that time. This relationship is interpreted as indicating RSL stability at a similar-to-present elevation during the period of beach-ridge formation. The hiatus in coastal progradation is concurrent with a deteriorating climate (cooling) in the Laptev Sea area and our data hence suggest increased rates of coastal change during periods of warmer climate conditions. Our study illustrates the potential of coastal sedimentary archives to provide a more complete view of the forcing, resilience and long-term evolution of unconsolidated Arctic coasts in a changing environment. |
format |
Article in Journal/Newspaper |
author |
Lasse Sander Rune Michaelis Svenja Papenmeier Sergey Pravkin Gesine Mollenhauer Hendrik Grotheer Torben Gentz Karen Helen Wiltshire |
author_facet |
Lasse Sander Rune Michaelis Svenja Papenmeier Sergey Pravkin Gesine Mollenhauer Hendrik Grotheer Torben Gentz Karen Helen Wiltshire |
author_sort |
Lasse Sander |
title |
Indication of Holocene sea-level stability in the southern Laptev Sea recorded by beach ridges in north-east Siberia, Russia |
title_short |
Indication of Holocene sea-level stability in the southern Laptev Sea recorded by beach ridges in north-east Siberia, Russia |
title_full |
Indication of Holocene sea-level stability in the southern Laptev Sea recorded by beach ridges in north-east Siberia, Russia |
title_fullStr |
Indication of Holocene sea-level stability in the southern Laptev Sea recorded by beach ridges in north-east Siberia, Russia |
title_full_unstemmed |
Indication of Holocene sea-level stability in the southern Laptev Sea recorded by beach ridges in north-east Siberia, Russia |
title_sort |
indication of holocene sea-level stability in the southern laptev sea recorded by beach ridges in north-east siberia, russia |
publisher |
Norwegian Polar Institute |
publishDate |
2019 |
url |
https://doi.org/10.33265/polar.v38.3379 https://doaj.org/article/0d28ea4898cf4299bb1406cbbe19e3b9 |
long_lat |
ENVELOPE(127.803,127.803,72.287,72.287) ENVELOPE(135.167,135.167,60.567,60.567) |
geographic |
Arctic Buor-Khaya Khaya Laptev Sea |
geographic_facet |
Arctic Buor-Khaya Khaya Laptev Sea |
genre |
Arctic laptev Laptev Sea lena delta Polar Research Siberia |
genre_facet |
Arctic laptev Laptev Sea lena delta Polar Research Siberia |
op_source |
Polar Research, Vol 38, Iss 0, Pp 1-13 (2019) |
op_relation |
1751-8369 doi:10.33265/polar.v38.3379 https://doaj.org/article/0d28ea4898cf4299bb1406cbbe19e3b9 |
op_rights |
undefined |
op_doi |
https://doi.org/10.33265/polar.v38.3379 |
container_title |
Polar Research |
container_volume |
38 |
container_issue |
0 |
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1766323180855623680 |