Turbid glacial runoff plumes in Kachemak Bay, Alaska: Outlines in shapefile format and spectral bands for an example case

Plume outlines

The .zip files contain shapefiles of sediment plume outlines in Kachemak Bay, Alaska: 

• shapes_high_S2.zip: High turbidity plumes originating at the head of the Bay and the input points of Portlock Creek, Grewingk Creek, and the Wosnesenski River as mapped from Sentinel-2 imagery.
• shapes_vhigh_S2.zip: Very high turbidity plumes originating at the head of the Bay and the input points of Portlock Creek, Grewingk Creek, and the Wosnesenski River as mapped from Sentinel-2 imagery.
• shapes_high_LS.zip: High turbidity plumes originating at the head of the Bay and the input points of Portlock Creek, Grewingk Creek, and the Wosnesenski River as mapped from Landsat imagery. The filenames of the shapefiles indicate which Landsat sensor (LS 4, 5, 7, or 8) the outlines were mapped from.
• shapes_vhigh_LS.zip: Very high turbidity plumes originating at the head of the Bay and the input points of Portlock Creek, Grewingk Creek, and the Wosnesenski River as mapped from Landsat imagery. The filenames of the shapefiles indicate which Landsat sensor (LS 4, 5, 7, or 8) the outlines were mapped from.

Grewingk Creek Plume, 11 June 2020

The .tif files contain convolved spectral bands derived from an hyperspectral image acquired on 11 June 2020, and an abundance map glacial turbdity in the Grewingk Plume. The spectral bands were convolved based on the Landsat-8 OLI spectral response function.