Climatic influence on the inter‐annual variability of late‐Holocene minerogenic sediment supply in a boreal forest catchment
Abstract Processes controlling sediment yield vary over a range of timescales, although most process‐based observations are extremely short. Lake sediments, however, can be used to extend the observational timescale and are particularly useful when annually laminated (varved) sediment is present. Th...
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crwiley:10.1002/esp.1933 2024-06-23T07:55:20+00:00 Climatic influence on the inter‐annual variability of late‐Holocene minerogenic sediment supply in a boreal forest catchment Petterson, Gunilla Renberg, Ingemar Sjöstedt‐de Luna, Sara Arnqvist, Per Anderson, N. John 2010 http://dx.doi.org/10.1002/esp.1933 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fesp.1933 https://onlinelibrary.wiley.com/doi/pdf/10.1002/esp.1933 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Earth Surface Processes and Landforms volume 35, issue 4, page 390-398 ISSN 0197-9337 1096-9837 journal-article 2010 crwiley https://doi.org/10.1002/esp.1933 2024-06-11T04:48:26Z Abstract Processes controlling sediment yield vary over a range of timescales, although most process‐based observations are extremely short. Lake sediments, however, can be used to extend the observational timescale and are particularly useful when annually laminated (varved) sediment is present. The sediment record at Kassjön (N. Sweden) consists of ∼6400 varves, each 0·5–1 mm thick. Image analysis was used to determine grey‐scale variation and varve thickness from which annual minerogenic accumulation rate (MinAR) (mg cm −2 year −1 ) was inferred for the period 4486 BC – AD 1900. MinAR varies on annual to centennial scales and mainly reflects channel bank erosion by the inflow streams. The mineral input reflects the intensity of the spring run‐off, which is dependent on the amount of snow accumulated during the winter, and hence MinAR is a long‐term record of variability in past winter climate; other factors will be a variable response to catchment uplift, vegetation succession and pedogenesis. A major shift from low to high MinAR occurred ∼250 BC, and peaks occurred around AD 250, 600, 1000, 1350 and 1650. Wavelet power spectrum analysis (confirmed by Fourier analyses) indicated significantly different periodicities throughout the period 4000 BC – AD 1700, including 275 years for the period 4000 BC – 2900 BC, 567 years for the period 2901 BC – 1201 BC, and 350 and 725 years for the period 1200 BC – AD 1700. The long‐term, centennial scale variability (∼350 years) may reflect solar forcing ( cf the 385‐year peak in tree‐ring calibrated 14 C activity) but interestingly, there is no obvious link to high frequency forcing, such as the North Atlantic Oscillation. The high resolution component of the record highlights the relevance of varved lake sediment records for understanding erosion dynamics in undisturbed forested catchments and their link to long‐term climate dynamics and future climate change. Copyright © 2010 John Wiley & Sons, Ltd. Article in Journal/Newspaper North Atlantic North Atlantic oscillation Wiley Online Library Short Lake ENVELOPE(-108.851,-108.851,59.584,59.584) Earth Surface Processes and Landforms 35 4 390 398 |
institution |
Open Polar |
collection |
Wiley Online Library |
op_collection_id |
crwiley |
language |
English |
description |
Abstract Processes controlling sediment yield vary over a range of timescales, although most process‐based observations are extremely short. Lake sediments, however, can be used to extend the observational timescale and are particularly useful when annually laminated (varved) sediment is present. The sediment record at Kassjön (N. Sweden) consists of ∼6400 varves, each 0·5–1 mm thick. Image analysis was used to determine grey‐scale variation and varve thickness from which annual minerogenic accumulation rate (MinAR) (mg cm −2 year −1 ) was inferred for the period 4486 BC – AD 1900. MinAR varies on annual to centennial scales and mainly reflects channel bank erosion by the inflow streams. The mineral input reflects the intensity of the spring run‐off, which is dependent on the amount of snow accumulated during the winter, and hence MinAR is a long‐term record of variability in past winter climate; other factors will be a variable response to catchment uplift, vegetation succession and pedogenesis. A major shift from low to high MinAR occurred ∼250 BC, and peaks occurred around AD 250, 600, 1000, 1350 and 1650. Wavelet power spectrum analysis (confirmed by Fourier analyses) indicated significantly different periodicities throughout the period 4000 BC – AD 1700, including 275 years for the period 4000 BC – 2900 BC, 567 years for the period 2901 BC – 1201 BC, and 350 and 725 years for the period 1200 BC – AD 1700. The long‐term, centennial scale variability (∼350 years) may reflect solar forcing ( cf the 385‐year peak in tree‐ring calibrated 14 C activity) but interestingly, there is no obvious link to high frequency forcing, such as the North Atlantic Oscillation. The high resolution component of the record highlights the relevance of varved lake sediment records for understanding erosion dynamics in undisturbed forested catchments and their link to long‐term climate dynamics and future climate change. Copyright © 2010 John Wiley & Sons, Ltd. |
format |
Article in Journal/Newspaper |
author |
Petterson, Gunilla Renberg, Ingemar Sjöstedt‐de Luna, Sara Arnqvist, Per Anderson, N. John |
spellingShingle |
Petterson, Gunilla Renberg, Ingemar Sjöstedt‐de Luna, Sara Arnqvist, Per Anderson, N. John Climatic influence on the inter‐annual variability of late‐Holocene minerogenic sediment supply in a boreal forest catchment |
author_facet |
Petterson, Gunilla Renberg, Ingemar Sjöstedt‐de Luna, Sara Arnqvist, Per Anderson, N. John |
author_sort |
Petterson, Gunilla |
title |
Climatic influence on the inter‐annual variability of late‐Holocene minerogenic sediment supply in a boreal forest catchment |
title_short |
Climatic influence on the inter‐annual variability of late‐Holocene minerogenic sediment supply in a boreal forest catchment |
title_full |
Climatic influence on the inter‐annual variability of late‐Holocene minerogenic sediment supply in a boreal forest catchment |
title_fullStr |
Climatic influence on the inter‐annual variability of late‐Holocene minerogenic sediment supply in a boreal forest catchment |
title_full_unstemmed |
Climatic influence on the inter‐annual variability of late‐Holocene minerogenic sediment supply in a boreal forest catchment |
title_sort |
climatic influence on the inter‐annual variability of late‐holocene minerogenic sediment supply in a boreal forest catchment |
publisher |
Wiley |
publishDate |
2010 |
url |
http://dx.doi.org/10.1002/esp.1933 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fesp.1933 https://onlinelibrary.wiley.com/doi/pdf/10.1002/esp.1933 |
long_lat |
ENVELOPE(-108.851,-108.851,59.584,59.584) |
geographic |
Short Lake |
geographic_facet |
Short Lake |
genre |
North Atlantic North Atlantic oscillation |
genre_facet |
North Atlantic North Atlantic oscillation |
op_source |
Earth Surface Processes and Landforms volume 35, issue 4, page 390-398 ISSN 0197-9337 1096-9837 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1002/esp.1933 |
container_title |
Earth Surface Processes and Landforms |
container_volume |
35 |
container_issue |
4 |
container_start_page |
390 |
op_container_end_page |
398 |
_version_ |
1802647892513521664 |