气候变化领域集成服务门户(CCPortal): Estimating supraglacial lake depth in West Greenland using Landsat 8 and comparison with other multispectral methods

CCPortal

DOI	10.5194/tc-10-15-2016
	Estimating supraglacial lake depth in West Greenland using Landsat 8 and comparison with other multispectral methods
	Pope A.; Scambos T.A.; Moussavi M.; Tedesco M.; Willis M.; Shean D.; Grigsby S.
发表日期	2016
ISSN	19940416
卷号	10 期号:1
英文摘要	Liquid water stored on the surface of ice sheets and glaciers impacts surface mass balance, ice dynamics, and heat transport. Multispectral remote sensing can be used to detect supraglacial lakes and estimate their depth and area. In this study, we use in situ spectral and bathymetric data to assess lake depth retrieval using the recently launched Landsat 8 Operational Land Imager (OLI). We also extend our analysis to other multispectral sensors to evaluate their performance with similar methods. Digital elevation models derived from WorldView stereo imagery (pre-lake filling and post-drainage) are used to validate spectrally derived depths, combined with a lake edge determination from imagery. The optimal supraglacial lake depth retrieval is a physically based single-band model applied to two OLI bands independently (red and panchromatic) that are then averaged together. When OLI-and WorldView-derived depths are differenced, they yield a mean and standard deviation of 0.0±1.6 m. This method is then applied to OLI data for the Sermeq Kujalleq (Jakobshavn Isbræ) region of Greenland to study the spatial and intra-seasonal variability of supraglacial lakes during summer 2014. We also give coefficients for estimating supraglacial lake depth using a similar method with other multispectral sensors. © Author(s) 2016.
学科领域	bathymetry; comparative study; digital elevation model; glacial lake; Landsat; performance assessment; remote sensing; seasonal variation; sensor; water depth; WorldView; Arctic; Greenland; Sermeq Avannarleq; West Greenland
语种	英语
scopus关键词	bathymetry; comparative study; digital elevation model; glacial lake; Landsat; performance assessment; remote sensing; seasonal variation; sensor; water depth; WorldView; Arctic; Greenland; Sermeq Avannarleq; West Greenland
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/119729
作者单位	National Snow and Ice Data Center, University of Colorado, Boulder, Boulder, CO, United States; Cooperative Institute for Research in Earth Sciences, University of Colorado, Boulder, Boulder, CO, United States; Polar Science Center, Applied Physics Lab, University of Washington, Seattle, WA, United States; Earth Science and Observation Center, University of Colorado, Boulder, Boulder, CO, United States; City College of New York, CUNY, New York City, NY, United States; Earth and Atmospheric Sciences, Cornell University, Ithaca, NY, United States; Lamont-Doherty Earth Observatory, Columbia University, Palisades, NY, United States; Geological Sciences, University of North Carolina, Chapel Hill, NC, United States
推荐引用方式 GB/T 7714	Pope A.,Scambos T.A.,Moussavi M.,et al. Estimating supraglacial lake depth in West Greenland using Landsat 8 and comparison with other multispectral methods[J],2016,10(1).
APA	Pope A..,Scambos T.A..,Moussavi M..,Tedesco M..,Willis M..,...&Grigsby S..(2016).Estimating supraglacial lake depth in West Greenland using Landsat 8 and comparison with other multispectral methods.Cryosphere,10(1).
MLA	Pope A.,et al."Estimating supraglacial lake depth in West Greenland using Landsat 8 and comparison with other multispectral methods".Cryosphere 10.1(2016).