气候变化领域集成服务门户(CCPortal): The spatio-temporal patterns of landfast ice in Antarctica during 2006–2011 and 2016

CCPortal

DOI	10.1016/j.rse.2020.111736
	The spatio-temporal patterns of landfast ice in Antarctica during 2006–2011 and 2016–2017 using high-resolution SAR imagery
	Li X.; Shokr M.; Hui F.; Chi Z.; Heil P.; Chen Z.; Yu Y.; Zhai M.; Cheng X.
发表日期	2020
ISSN	00344257
卷号	242
英文摘要	Landfast ice is an important component of the Antarctic sea ice regime. It affects the Antarctic climate and ecological system. In this study, the first high-resolution, long time series of the landfast ice edge from 2006 to 2011 and 2016 to 2017 is presented. The dataset was produced based on the improved net gradient difference algorithm using 2470 SAR scenes from ENVISAT and Sentinel-1A/B as well as manual analysis of MODIS imagery to fill in SAR data gaps. The study results show that the landfast ice area in November for all studied years was approximately 49.49 ± 3.25 × 104 km2, accounting for about 3%–4% of the total Antarctic sea ice area. The maximum area was 55.70 × 104 km2 in November 2007, compared to the minimum area 44.01 × 104 km2 in 2011. The area in West Antarctica was about 40% of that in East Antarctica. The distribution of landfast ice in Antarctica has significant regional differences. The extent in the Indian Ocean sector is the maximum with a mean value of 16.49 ± 1.1 × 104 km2; however, the ratio of the landfast ice area to the sea ice area in the Pacific Ocean sector is the highest. Twenty-four landfast ice zones with groups of small, grounded icebergs were identified, most of which were located in East Antarctica, particularly along the Wilkes Land and Oates Land. Two cases are presented to illustrate how giant, grounded icebergs affected landfast ice. Results from this study are well suited to underpin the Antarctic climate or ecological system studies. © 2020 Elsevier Inc.
英文关键词	Antarctica; Landfast ice; Remote sensing; SAR images
语种	英语
scopus关键词	Ecology; Image enhancement; Remote sensing; Sea ice; Synthetic aperture radar; Antarctica; Difference algorithms; Ecological systems; High resolution sar imageries; Land-fast; Regional differences; SAR Images; Spatiotemporal patterns; Radar imaging; algorithm; ice cover; image resolution; MODIS; remote sensing; satellite imagery; sea ice; spatiotemporal analysis; Antarctica; East Antarctica; Indian Ocean; Oates Coast; Oates Coast; Pacific Ocean; West Antarctica; Wilkes Land
来源期刊	Remote Sensing of Environment
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/179361
作者单位	School of Geospatial Engineering and Science, Sun Yat-Sen University, Guangzhou, 510275, China; Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Zhuhai, 519082, China; State Key Laboratory of Remote Sensing Science, and College of Global Change and Earth System Science, Beijing Normal University, Beijing, 100875, China; University Corporation for Polar Research, Beijing, 100875, China; Science and Technology Branch, Environment and Climate Change Canada, Toronto, Ontario M3H5T4, Canada; Geospatial Science, Applications & Technology Center, Department of Geography, Texas A&M University, 3147 TAMU, College Station, TX 77843-3147, United States; Australian Antarctic Division and Antarctic Climate and Ecosystems Cooperative Research Centre, University of Tasmania, Hobart, Tasmania 7001, Australia; MNR Key Laboratory for Polar Science, Polar Research Institute of China, Shanghai, 200136, China
推荐引用方式 GB/T 7714	Li X.,Shokr M.,Hui F.,等. The spatio-temporal patterns of landfast ice in Antarctica during 2006–2011 and 2016–2017 using high-resolution SAR imagery[J],2020,242.
APA	Li X..,Shokr M..,Hui F..,Chi Z..,Heil P..,...&Cheng X..(2020).The spatio-temporal patterns of landfast ice in Antarctica during 2006–2011 and 2016–2017 using high-resolution SAR imagery.Remote Sensing of Environment,242.
MLA	Li X.,et al."The spatio-temporal patterns of landfast ice in Antarctica during 2006–2011 and 2016–2017 using high-resolution SAR imagery".Remote Sensing of Environment 242(2020).