Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1002/2017GL076056 |
Contribution of Deformation to Sea Ice Mass Balance: A Case Study From an N-ICE2015 Storm | |
Itkin, Polona1; Spreen, Gunnar1,2; Hvidegaard, Sine Munk3; Skourup, Henriette3; Wilkinson, Jeremy4; Gerland, Sebastian1; Granskog, Mats A.1 | |
2018-01-28 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS |
ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2018 |
卷号 | 45期号:2页码:789-796 |
文章类型 | Article |
语种 | 英语 |
国家 | Norway; Germany; Denmark; England |
英文摘要 | The fastest and most efficient process of gaining sea ice volume is through the mechanical redistribution of mass as a consequence of deformation events. During the ice growth season divergent motion produces leads where new ice grows thermodynamically, while convergent motion fractures the ice and either piles the resultant ice blocks into ridges or rafts one floe under the other. Here we present an exceptionally detailed airborne data set from a 9 km(2) area of first year and second year ice in the Transpolar Drift north of Svalbard that allowed us to estimate the redistribution of mass from an observed deformation event. To achieve this level of detail we analyzed changes in sea ice freeboard acquired from two airborne laser scanner surveys just before and right after a deformation event brought on by a passing low-pressure system. A linear regression model based on divergence during this storm can explain 64% of freeboard variability. Over the survey region we estimated that about 1.3% of level sea ice volume was pressed together into deformed ice and the new ice formed in leads in a week after the deformation event would increase the sea ice volume by 0.5%. As the region is impacted by about 15 storms each winter, a simple linear extrapolation would result in about 7% volume increase and 20% deformed ice fraction at the end of the season. |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000425514300035 |
WOS关键词 | VARIABILITY ; THICKNESS |
WOS类目 | Geosciences, Multidisciplinary |
WOS研究方向 | Geology |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/25592 |
专题 | 气候变化 |
作者单位 | 1.Norwegian Polar Res Inst, Fram Ctr, Tromso, Norway; 2.Univ Bremen, Inst Environm Phys, Bremen, Germany; 3.Tech Univ Denmark, Natl Space Inst DTU Space, Lyngby, Denmark; 4.British Antarctic Survey, Cambridge, England |
推荐引用方式 GB/T 7714 | Itkin, Polona,Spreen, Gunnar,Hvidegaard, Sine Munk,et al. Contribution of Deformation to Sea Ice Mass Balance: A Case Study From an N-ICE2015 Storm[J]. GEOPHYSICAL RESEARCH LETTERS,2018,45(2):789-796. |
APA | Itkin, Polona.,Spreen, Gunnar.,Hvidegaard, Sine Munk.,Skourup, Henriette.,Wilkinson, Jeremy.,...&Granskog, Mats A..(2018).Contribution of Deformation to Sea Ice Mass Balance: A Case Study From an N-ICE2015 Storm.GEOPHYSICAL RESEARCH LETTERS,45(2),789-796. |
MLA | Itkin, Polona,et al."Contribution of Deformation to Sea Ice Mass Balance: A Case Study From an N-ICE2015 Storm".GEOPHYSICAL RESEARCH LETTERS 45.2(2018):789-796. |
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