Performance of Landsat 8 Operational Land Imager for Mapping Ice Sheet Velocity.

ABSTRACT: Landsat imagery has long been used to measure glacier and ice sheet surface velocity, and this application has increased with increased length and accessibility of the archive. The radiometric characteristics of Landsat sensors, however, have limited these measurements generally to only fast-flowing glaciers with high levels of surface texture and imagery with high sun angles and cloud-free conditions, preventing wide-area velocity mapping at the scale achievable with synthetic aperture radar (SAR). The Operational Land Imager (OLI) aboard the newly launched Landsat 8 features substantially improves radiometric performance compared to preceding sensors: enhancing performance of automated Repeat-Image Feature Tracking (RIFT) for mapping ice flow speed. In order to assess this improvement, w

SUBMITTER: Jeong S 

PROVIDER: S-EPMC6505706 | biostudies-literature | 2015 Dec

REPOSITORIES: biostudies-literature