20250828 18531800 1.0 TRUE 150000000 5000 ItemDescription Scalar displacement map of dune migration magnitude (2000–2023) derived from Landsat imagery using AutoRIFT. <DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>This layer represents the magnitude of dune displacement in meters, measured between 2000 and 2023 using AutoRIFT (Lei et al., 2021; Gardner et al., 2018). The product was derived from Landsat panchromatic imagery using normalized cross-correlation feature tracking. Unlike the vector field product, which includes both X and Y offsets, this map shows only the total displacement magnitude as a combined offset product.</SPAN></P><P><SPAN>Lei, Y., Gardner, A. and Agram, P., 2021. Autonomous Repeat Image Feature Tracking (autoRIFT) and Its Application for Tracking Ice Displacement. Remote Sensing, 13(4), p.749.</SPAN></P></DIV></DIV></DIV> Dune_movement_magnitude_meters Dune Migration AutoRIFT Landsat Magnitude Displacement Remote Sensing 2000–2023 20250828