气候变化领域集成服务门户(CCPortal): Interannual sea ice thickness variability in the Bay of Bothnia

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DOI	10.5194/tc-12-3459-2018
	Interannual sea ice thickness variability in the Bay of Bothnia
	Ronkainen I.; Lehtiranta J.; Lensu M.; Rinne E.; Haapala J.; Haas C.
发表日期	2018
ISSN	19940416
卷号	12 期号:11
英文摘要	While variations of Baltic Sea ice extent and thickness have been extensively studied, there is little information about drift ice thickness, distribution, and its variability. In our study, we quantify the interannual variability of sea ice thickness in the Bay of Bothnia during the years 2003-2016. We use various different data sets: official ice charts, drilling data from the regular monitoring stations in the coastal fast ice zone, and helicopter and shipborne electromagnetic soundings. We analyze the different data sets and compare them to each other to characterize the interannual variability, to discuss the ratio of level and deformed ice, and to derive ice thickness distributions in the drift ice zone. In the fast ice zone the average ice thickness is 0.58±0.13 m. Deformed ice increases the variability of ice conditions in the drift ice zone, where the average ice thickness is 0.92±0.33 m. On average, the fraction of deformed ice is 50 % to 70 % of the total volume. In heavily ridged ice regions near the coast, mean ice thickness is approximately half a meter thicker than that of pure thermodynamically grown fast ice. Drift ice exhibits larger interannual variability than fast ice. © Author(s) 2018.
学科领域	annual variation; coastal zone; ice drift; ice thickness; sea ice; thermodynamics; Atlantic Ocean; Baltic Sea
语种	英语
scopus关键词	annual variation; coastal zone; ice drift; ice thickness; sea ice; thermodynamics; Atlantic Ocean; Baltic Sea
来源期刊	Cryosphere
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/119039
作者单位	Finnish Meteorological Institute, Helsinki, 00560, Finland; Alfred Wegener Institute, Bremerhaven, 27570, Germany
推荐引用方式 GB/T 7714	Ronkainen I.,Lehtiranta J.,Lensu M.,et al. Interannual sea ice thickness variability in the Bay of Bothnia[J],2018,12(11).
APA	Ronkainen I.,Lehtiranta J.,Lensu M.,Rinne E.,Haapala J.,&Haas C..(2018).Interannual sea ice thickness variability in the Bay of Bothnia.Cryosphere,12(11).
MLA	Ronkainen I.,et al."Interannual sea ice thickness variability in the Bay of Bothnia".Cryosphere 12.11(2018).