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DOI10.1007/s10933-015-9824-8
The paleohydrology of Sluice Pond, NE Massachusetts, and its regional significance
Hubeny, J. Bradford1; McCarthy, Francine M. G.2; Lewis, Jonathan1; Drljepan, Matea2; Morissette, Cameron1; King, John W.3; Cantwell, Mark4; Hudson, Nicole M.1; Crispo, Mary Lynne1
发表日期2015-03-01
ISSN0921-2728
卷号53期号:3页码:271-287
英文摘要

Seismic, pollen, stable isotope and lithologic stratigraphies of Sluice Pond, northeastern Massachusetts, were investigated to reconstruct local climate conditions from the latest Pleistocene to present. We present a new lake-level curve, constrained largely by acoustic reflectors and well-dated sediment cores from the deep basin and margin of the lake. Bulk delta S-34 data from the basin core provide valuable information regarding anoxia and water-column stratification. The lake-level history is corroborated with pollen-based, transfer-function-derived reconstructions of temperature and precipitation from the basin core. The lower stratigraphy reveals a time of cold/dry climate from ca. 11.7-8.2 ka BP (1 ka = 1,000 cal yr), with a minor lake-level increase centered at ca. 11.0 ka BP. An increase in regional temperature/moisture is apparent in sediments younger than 8.2 ka BP. A warm/dry climate is reconstructed from ca. 5.1-3.5 ka BP, concomitant with the well-established regional Tsuga (eastern hemlock) minimum. Sediments deposited since 3.5 ka BP reveal a general deepening of the pond and organic-rich conditions, with another minor dry episode from ca. 2.0-1.3 ka BP. Uppermost sediments record anthropogenic disturbance. The hydroclimate variability inferred from the Sluice Pond sediment record is consistent with previous reconstructions of lake level and vegetation in the southern portion of the northeastern US. It is not, however, consistent with reconstructions from locations farther north, many of which possess evidence of a dry period ca. 9.0-5.0 ka BP. The likely explanation for this discrepancy lies in air mass distribution associated with the position and amplitude of the circumpolar vortex throughout the Holocene. This new record of Holocene regional hydroclimate variability adds to the spatial coverage of existing reconstructions, and helps constrain forcings associated with such variability.


英文关键词Northeastern North America;Climate;Lake level;Quaternary;Paleoclimate;Stable isotope
语种英语
WOS记录号WOS:000349971500002
来源期刊JOURNAL OF PALEOLIMNOLOGY
来源机构美国环保署
文献类型期刊论文
条目标识符http://gcip.llas.ac.cn/handle/2XKMVOVA/60648
作者单位1.Salem State Univ, Dept Geol Sci, Salem, MA 01970 USA;
2.Brock Univ, Dept Earth Sci, St Catharines, ON L2S 3A1, Canada;
3.Univ Rhode Isl, Grad Sch Oceanog, Narragansett, RI 02882 USA;
4.US EPA, Atlantic Ecol Div, Narragansett, RI 02882 USA
推荐引用方式
GB/T 7714
Hubeny, J. Bradford,McCarthy, Francine M. G.,Lewis, Jonathan,et al. The paleohydrology of Sluice Pond, NE Massachusetts, and its regional significance[J]. 美国环保署,2015,53(3):271-287.
APA Hubeny, J. Bradford.,McCarthy, Francine M. G..,Lewis, Jonathan.,Drljepan, Matea.,Morissette, Cameron.,...&Crispo, Mary Lynne.(2015).The paleohydrology of Sluice Pond, NE Massachusetts, and its regional significance.JOURNAL OF PALEOLIMNOLOGY,53(3),271-287.
MLA Hubeny, J. Bradford,et al."The paleohydrology of Sluice Pond, NE Massachusetts, and its regional significance".JOURNAL OF PALEOLIMNOLOGY 53.3(2015):271-287.
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