Pacaya Volcano, March 2 2014 in LANDSAT 7 data

I'd like to thank Rudiger Escobar Wolf of Michigan Technology University for putting some of the data onto his Facebook account to show that USGS LANDSAT 7 had captured the ash cloud from Pacaya.

Full swath view from RGB - Bands 3, 2, and 1. This is known as the 'natural color' band combination. Visible bands are used, ground features appear as they would to the human eye. 

Zoomed in on the volcano. LANDSAT 7 has failed Scan Line Corrector (SLC), hence the stripes in the data.

Full swath view from RGB - Bands 4, 3, and 2. This is known as the 'false color' band combination. Vegetation appears in red, urban areas as cyan blue, Ice/snow/clouds as white and soils can vary from dark to light browns.

Zoomed in on the volcano.

Full swath view from RGB - Bands 7, 4, and 2. This is known as the 'natural-like' band combination. Healthy vegetation comes up as greens. Also Band 7 in the SWIR at 3.209 - 2.35 microns is used and hence the thermal signals from the volcano are emphasized in the red colors.

Zoomed in on the volcano.