MyJournals Home  

RSS FeedsRemote Sensing, Vol. 14, Pages 5973: Mapping Area Changes of Glacial Lakes Using Stacks of Optical Satellite Images (Remote Sensing)

 
 

25 november 2022 13:43:45

 
Remote Sensing, Vol. 14, Pages 5973: Mapping Area Changes of Glacial Lakes Using Stacks of Optical Satellite Images (Remote Sensing)
 


Glacial lakes are an important and dynamic component of terrestrial meltwater storage, responding to climate change and glacier retreat. Although there is evidence of rapid worldwide growth of glacial lakes, changes in frequency and magnitude of glacier lake outbursts under climatic changes are not yet understood. This study proposes and discusses a method framework for regional-scale mapping of glacial lakes and area change detection using large time-series of optical satellite images and the cloud processing tool Google Earth Engine in a semi-automatic way. The methods are presented for two temporal scales, from the 2-week Landsat revisit period to annual resolution. The proposed methods show how constructing an annual composite of pixel values such as minimum or maximum values can help to overcome typical problems associated with water mapping from optical satellite data such as clouds, or terrain and cloud shadows. For annual-resolution glacial lake mapping, our method set only involves two different band ratios based on multispectral satellite images. The study demonstrates how the proposed method framework can be applied to detect rapid lake area changes and to produce a complete regional-scale glacial lake inventory, using the Greater Caucasus as example.


 
45 viewsCategory: Geology, Physics
 
Remote Sensing, Vol. 14, Pages 5972: Review of GPR Activities in Civil Infrastructures: Data Analysis and Applications (Remote Sensing)
Remote Sensing, Vol. 14, Pages 5974: Assessing Potential Spontaneous Combustion of Coal Gangue Dumps after Reclamation by Simulating Alfalfa Heat Stress Based on the Spectral Features of Chlorophyll Fluorescence Parameters (Remote Sensing)
 
 
blog comments powered by Disqus


MyJournals.org
The latest issues of all your favorite science journals on one page

Username:
Password:

Register | Retrieve

Search:

Physics


Copyright © 2008 - 2022 Indigonet Services B.V.. Contact: Tim Hulsen. Read here our privacy notice.
Other websites of Indigonet Services B.V.: Nieuws Vacatures News Tweets Nachrichten