Peat properties, elemental variations, age model and FTIR-ATR analyses for peat ash and local source sediments for the Store Mosse Dune South record
Fuente:
PANGAEA
Saved in:
| Main Authors: | , , , , , , , , , , |
|---|---|
| Format: | Dataset Open Access |
| Language: | en |
| Published: |
PANGAEA
2022
|
| Subjects: | |
| Online Access: | |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1867171377223565312 |
|---|---|
| author | Kylander, Malin E Martínez-Cortizas, Antonio Sjöström, Jenny K Gåling, Jenny Gyllencreutz, Richard Bindler, Richard Alexanderson, Helena Schenk, Frederik Reinardy, Benedict T I Chandler, Benjamin M P Gallagher, Kerry |
| author_facet | Kylander, Malin E Martínez-Cortizas, Antonio Sjöström, Jenny K Gåling, Jenny Gyllencreutz, Richard Bindler, Richard Alexanderson, Helena Schenk, Frederik Reinardy, Benedict T I Chandler, Benjamin M P Gallagher, Kerry |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | Reconstructing past storm variability is essential to improving our understanding of storminess in a future changing climate. Peat sequences from coastal ombrotrophic bogs are increasingly used for this purpose, where greater quantities of coarser grained beach sand are deposited by strong winds during storm events. Moving inland however, storm intensity decreases, as does sand availability, muting potential paleostorm signals in bogs. We circumvent these issues by taking the innovative approach of using mid-infrared (MIR) spectral data, supported by elemental information, from the inorganic fraction of Store Mosse Dune South (SMDS, 57°16'37.70N, 13°55'30.86E), a 5000-year-old sequence from a large peatland located in southern Sweden. We infer past changes in mineral composition and thereby, the grain size of the deposited material. The record is dominated by quartz, whose coarse nature was confirmed through analyses of potential local source sediments. This was supported by further mineralogical and elemental proxies of atmospheric mineral inputs. Comparison of SMDS with within-bog and regionally relevant records showed that there is a difference in proxy and site response to what should be similar timing in shifts in storminess over the ~100 km transect considered. We suggest the construction of regional storm stacks, built here by applying changepoint modelling to four of the transect sites jointly. This modelling approach has the effect of reinforcing signals in common while reducing the influence of random noise. The resulting Southern Sweden-Storm Stack dates stormier periods to 4495-4290, 3880-3790, 2885-2855, 2300-2005, 1175-1065 and 715-425 cal yr BP. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_952927 |
| institution | PANGAEA |
| language | en |
| publishDate | 2022 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | Peat properties, elemental variations, age model and FTIR-ATR analyses for peat ash and local source sediments for the Store Mosse Dune South record Kylander, Malin E Martínez-Cortizas, Antonio Sjöström, Jenny K Gåling, Jenny Gyllencreutz, Richard Bindler, Richard Alexanderson, Helena Schenk, Frederik Reinardy, Benedict T I Chandler, Benjamin M P Gallagher, Kerry FTIR spectroscopy; Geochemistry; mineral data; peat; storminess Reconstructing past storm variability is essential to improving our understanding of storminess in a future changing climate. Peat sequences from coastal ombrotrophic bogs are increasingly used for this purpose, where greater quantities of coarser grained beach sand are deposited by strong winds during storm events. Moving inland however, storm intensity decreases, as does sand availability, muting potential paleostorm signals in bogs. We circumvent these issues by taking the innovative approach of using mid-infrared (MIR) spectral data, supported by elemental information, from the inorganic fraction of Store Mosse Dune South (SMDS, 57°16'37.70N, 13°55'30.86E), a 5000-year-old sequence from a large peatland located in southern Sweden. We infer past changes in mineral composition and thereby, the grain size of the deposited material. The record is dominated by quartz, whose coarse nature was confirmed through analyses of potential local source sediments. This was supported by further mineralogical and elemental proxies of atmospheric mineral inputs. Comparison of SMDS with within-bog and regionally relevant records showed that there is a difference in proxy and site response to what should be similar timing in shifts in storminess over the ~100 km transect considered. We suggest the construction of regional storm stacks, built here by applying changepoint modelling to four of the transect sites jointly. This modelling approach has the effect of reinforcing signals in common while reducing the influence of random noise. The resulting Southern Sweden-Storm Stack dates stormier periods to 4495-4290, 3880-3790, 2885-2855, 2300-2005, 1175-1065 and 715-425 cal yr BP. |
| title | Peat properties, elemental variations, age model and FTIR-ATR analyses for peat ash and local source sediments for the Store Mosse Dune South record |
| topic | FTIR spectroscopy; Geochemistry; mineral data; peat; storminess |
| url | https://doi.org/10.1594/PANGAEA.952927 |