Abstract
Abstract. Ice flow velocity over long time series in East Antarctica plays a vital role in estimating and predicting the mass balance of Antarctic Ice Sheet and its contribution to global sea level rise. However, there is no Antarctic ice velocity product with large space scale available showing the East Antarctic ice flow velocity pattern before the 1990s. We proposed three methods including parallax decomposition, grid-based NCC image matching, feature and gird-based image matching with constraints for estimation of surface velocity in East Antarctica based on ARGON KH-5 and LANDSAT imagery, showing the feasibility of using historical optical imagery to obtain Antarctic ice motion. Based on these previous studies, we presented a set of systematic method for developing ice surface velocity product for the entire East Antarctica from the 1960s to the 1980s in this paper.
Highlights
The mass balance change of Antarctic ice sheet as a response to climate change is of great significance in estimating its contribution to the global sea level rise
Ice flow velocity is an essential parameter in calculating ice flux and assessing the mass balance of Antarctic ice sheet
Li et al (2017a and b, Ye et al 2017) presented three methods including parallax decomposition, grid-based NCC image matching, feature and gird-based image matching with constraints for estimation of surface velocity of some glaciers in East Antarctica from the 1960s to the 1980s based on ARGON KH-5 and LANDSAT imagery, showing the feasibility of using historical optical imagery to obtain Antarctic ice motion
Summary
The mass balance change of Antarctic ice sheet as a response to climate change is of great significance in estimating its contribution to the global sea level rise. Since the 1980s, GNSS techniques have largely replaced traditional survey measurements to derive the ice surface motion (Frezzotti et al, 1998; Manson et al, 2000; Urbini et al, 2008) and the accuracy and efficiency of the measurements have been greatly improved. These in-situ measurements require considerable time and efforts, and only small-scale measurements can be accomplished due to the limitations of observation stations and harsh environment. The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, Volume XLII-3, 2018 ISPRS TC III Mid-term Symposium “Developments, Technologies and Applications in Remote Sensing”, 7–10 May, Beijing, China map compiling methods of developing ice surface velocity products for the entire East Antarctica area based on historical optical images from the 1960s to the 1980s
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