Quantifying Surface-Height Change Over a Periglacial Environment With ICESat-2 Laser Altimetry.

ABSTRACT: We use Ice, Cloud, and land Elevation Satellite 2 (ICESat-2) laser altimetry crossovers and repeat tracks collected over the North Slope of Alaska to estimate ground surface-height change due to the seasonal freezing and thawing of the active layer. We compare these measurements to a time series of surface deformation from Sentinel-1 interferometric synthetic aperture radar (InSAR) and demonstrate agreement between these independent observations of surface deformation at broad spatial scales. We observe a relationship between ICESat-2-derived surface subsidence/uplift and changes in normalized accumulated degree days, which is consistent with the thermodynamically driven seasonal freezing and thawing of the active layer. Integrating ICESat-2 crossover estimates of surface-height change yie

SUBMITTER: Michaelides RJ 

PROVIDER: S-EPMC8459227 | biostudies-literature | 2021 Aug

REPOSITORIES: biostudies-literature