Chironomid-inferred summer temperatures for the Last Glacial-Interglacial Transition from a lake sediment sequence in Muir Park Reservoir, west-central Scotland
Authors: Brooks, S.J., Davies, K.L., Mather, K.A., Matthews, I.P. and Lowe, J.J.
Journal: Journal of Quaternary Science
Volume: 31
Issue: 3
Pages: 214-224
eISSN: 1099-1417
ISSN: 0267-8179
DOI: 10.1002/jqs.2860
Abstract:Lake sediments spanning the Last Glacial-Interglacial Transition (LGIT: ca. 14.7 to 8ka BP) from Muir Park Reservoir (MPR) in west-central Scotland were analysed for chironomids. The site lies just outside the southern limit of a former glacier that advanced into the Loch Lomond Basin during the Loch Lomond (Younger Dryas) Stadial. Chironomid-inferred mean July temperatures were derived using a modern Norwegian calibration dataset. Three tephra layers constrain the sequence chronologically. Inferred temperatures decline from a high value early in the Interstadial, punctuated by two cold oscillations, probably equivalent to GI-1d and GI-1b in the Greenland ice-core record, and a warm oscillation (equivalent to GI-1a) immediately before the severe cooling at the start of the Loch Lomond Stadial (GS-1), when summer temperatures fell by about 5°C below the Interstadial average. Summer temperatures fell by about 3°C below the Interstadial average during GI-1d, which is less severe than inferred from other chironomid records from eastern Scotland, and may reflect the influence of an oceanic-continental gradient. Cooling during GI-1b was particularly strong at MPR when minimum temperatures were about the same as those reached during GI-1d, unlike other sites investigated where GI-1d is usually between 1 and 2°C cooler than GI-1b.
Source: Scopus
Chironomid-inferred summer temperatures for the Last Glacial-Interglacial Transition from a lake sediment sequence in Muir Park Reservoir, west-central Scotland
Authors: Brooks, S.J., Davies, K.L., Mather, K.A., Matthews, I.P. and Lowe, J.J.
Journal: JOURNAL OF QUATERNARY SCIENCE
Volume: 31
Issue: 3
Pages: 214-224
eISSN: 1099-1417
ISSN: 0267-8179
DOI: 10.1002/jqs.2860
Source: Web of Science (Lite)
Chironomid-inferred summer temperatures for the Last Glacial-Interglacial Transition from a lake sediment sequence in Muir Park Reservoir, west-central Scotland
Authors: Brooks, S.J., Davies, K.L., Mather, K.A., Matthews, I.P. and Lowe, J.J.
Journal: Journal of Quaternary Science
Volume: 31
Pages: 214-224
Publisher: John Wiley and Sons Ltd
ISSN: 0267-8179
DOI: 10.1002/jqs.2860
Abstract:Lake sediments spanning the Last Glacial-Interglacial Transition (LGIT: ca. 14.7 to 8ka BP) from Muir Park Reservoir (MPR) in west-central Scotland were analysed for chironomids. The site lies just outside the southern limit of a former glacier that advanced into the Loch Lomond Basin during the Loch Lomond (Younger Dryas) Stadial. Chironomid-inferred mean July temperatures were derived using a modern Norwegian calibration dataset. Three tephra layers constrain the sequence chronologically. Inferred temperatures decline from a high value early in the Interstadial, punctuated by two cold oscillations, probably equivalent to GI-1d and GI-1b in the Greenland ice-core record, and a warm oscillation (equivalent to GI-1a) immediately before the severe cooling at the start of the Loch Lomond Stadial (GS-1), when summer temperatures fell by about 5°C below the Interstadial average. Summer temperatures fell by about 3°C below the Interstadial average during GI-1d, which is less severe than inferred from other chironomid records from eastern Scotland, and may reflect the influence of an oceanic-continental gradient. Cooling during GI-1b was particularly strong at MPR when minimum temperatures were about the same as those reached during GI-1d, unlike other sites investigated where GI-1d is usually between 1 and 2°C cooler than GI-1b. © 2016 John Wiley & Sons, Ltd.
Source: Manual