Improved Antarctic-Wide Ice Flow Maps from Landsat 8 Imagery

• Main Authors: Shen, Qiang, Wang, Hansheng, Shum, C K, Jiang, Liming
• Format: Dataset
• Language: English
• Published: PANGAEA 2019
• Subjects: Antarctica; File content; ice velocity; Landsat8; pan-Antarctica; Uniform resource locator/link to file; Antarctic; Antarc*
• Online Access: https://doi.pangaea.de/10.1594/PANGAEA.908845; https://doi.org/10.1594/PANGAEA.908845

Here, we present a methodology which can automatically calibrate, mosaic, and post-process Landsat images into displacement maps, resulting in seamless, continent-wide, ice velocity products. Using this developed methodology, we have assembled over 200,000 displacement maps to generate Antarctic-wide annual mosaics of ice velocity maps from more than 70,000 Landsat 8 images acquired between December 2013 and April 2019. The new suite of annual Antarctic ice velocity maps at 105-m grid spacing provide the clearest picture of Antarctic-wide ice flow to-date, and error analysis via comparisons with various available prior ice velocity data products and in situ data confirmed the improved accuracy of this new data product.