气候变化领域集成服务门户(CCPortal): Reconstruction of past storminess: Evaluation of an indicator approach using aeolian mineral grains buried in peat deposits; Estonia

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DOI	10.1016/j.quascirev.2019.06.026
	Reconstruction of past storminess: Evaluation of an indicator approach using aeolian mineral grains buried in peat deposits; Estonia
	Vandel E.; Vaasma T.; Sugita S.; Tõnisson H.; Jaagus J.; Vilumaa K.; Anderson A.; Kont A.
发表日期	2019
ISSN	0277-3791
起始页码	215
结束页码	227
卷号	218
英文摘要	This study aims to evaluate a reconstruction method of past storminess using aeolian sand influx (ASI) in peat deposits. We use high-resolution records of ASI from four peat bogs along the Estonian coast and compare those with local instrumentally-recorded storminess data since 1920 AD and with historical climatic records around the Baltic Sea over the last two centuries. Potential effects of local changes in forest cover and anthropogenic disturbances on the ASI signals are also evaluated with historical maps available for the study sites. Diameter of all sand grains >65 μm is measured with an image analysis system to detect temporal changes in the grain-size distribution. Our results demonstrate two major periods of high ASI over the last centuries in the region: during the 19th century and since the 1950s with highest values in 1980–2000 AD. Cross-correlations between the changes in ASI and the instrumentally-recorded storm days during the last century are positive and significant. High ASI values recorded during the 19th century correspond to the positive NAO indices and high cyclonic activity reconstructed in southern Sweden. We find that sand grains <250 μm in diameter add additional information for detecting changes in storminess. Temporal shifts in grain-size distribution and median diameter of mineral grains occur in every core, showing changes in the source materials through time. © 2019 Elsevier Ltd
英文关键词	Aeolian sand influx (ASI); Baltic Sea region; Coastal areas; Grain-size distribution; Paleoclimatology; Peat core; Storm records
语种	英语
scopus关键词	Deposits; Peat; Sand; Size distribution; Storms; Aeolian sand; Baltic sea; Coastal area; Grain size distribution; Paleoclimatology; Peat cores; Grain size and shape; anthropogenic effect; climate signal; coastal zone; deposition; environmental indicator; eolian process; flux measurement; forest cover; grain size; historical record; mineral; nineteenth century; paleoclimate; peatland; reconstruction; size distribution; storm
来源期刊	Quaternary Science Reviews
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/151849
作者单位	Institute of Ecology, Tallinn University, Tallinn, Estonia; Institute of Ecology and Earth Sciences, University of Tartu, Tartu, Estonia
推荐引用方式 GB/T 7714	Vandel E.,Vaasma T.,Sugita S.,et al. Reconstruction of past storminess: Evaluation of an indicator approach using aeolian mineral grains buried in peat deposits; Estonia[J],2019,218.
APA	Vandel E..,Vaasma T..,Sugita S..,Tõnisson H..,Jaagus J..,...&Kont A..(2019).Reconstruction of past storminess: Evaluation of an indicator approach using aeolian mineral grains buried in peat deposits; Estonia.Quaternary Science Reviews,218.
MLA	Vandel E.,et al."Reconstruction of past storminess: Evaluation of an indicator approach using aeolian mineral grains buried in peat deposits; Estonia".Quaternary Science Reviews 218(2019).