19th July 2017 – One of the possibilities of using a multispectral satellite Sentinel 2 is mapping of burnt areas caused by wildfires. Because of the large wildfire threatening Split in the past few days, our expert Alen Berta has made several maps and an analysis of the burnt area:
On the upper parts of the enclosed pictures is the footage of the area on June 27th, 2017, and in the lower parts of photos from July 17th. Figure 1 shows the natural colours, and Figures 2 and 3 (closer view) provide an infrared (invisible to the human eye) overview generated by combining different multispectral channels from satellite images where the vegetation is shown bright red to facilitate mapping.
This fire broke out in one hour after midnight, and the footage below shows the situation at 10 o’clock in the morning. Via preliminary analysis it was found that in those nine hours, the fire swallowed almost 550 ha of hard-to-reach terrain covered with grass vegetation, low vegetation and pines. As the fire burned through the night, the Canadairs were unable to help put out the fire, which, along with strong Bura winds and dry vegetation, progressed remarkably fast. At present, the fire is localized, and at inaccessible parts of Mosor the fire is still burning.
We’re dreading to see the extent of this fire when Sentinel 2 passes over that area again, which will happen on July 27th, 2017. Stay tuned ….