Тип публикации: статья из журнала
Год издания: 2018
Идентификатор DOI: 10.1134/S000143381809030X
Ключевые слова: active fire zone, crown fire, fire radiative power, sub-pixel analysis, vegetation fire
Аннотация: Abstract: As applied to the conditions of wildfires in Siberia, remote sensing is adapted to record the radiation power from the active fire zone in the range of 3.929–3.989 μm (Terra/MODIS data). The limits of variation of the detected values of heat radiation are evaluated. Sporadic peaks that exceed the mean value of heat radiПоказать полностьюation in the fire field by a value of 2.5σ were correlated with high-intensity fires, including crown fires. The probability of remote fire detection in crown stage was no less than 65%. The quantitative dependence of the Fire Radiative Power (FRP) on the area of the active zone was determined using a subpixel analysis. The fraction of forest fires in Siberia with areas of extreme heat radiation is shown to be 5.5 ± 1.2% of the total wildfires. The total area of high-intensity wildfires including crown fires is at least 8.5% of the average annual wildfire area and reaches values of 15–25% during extreme fire seasons. © 2018, Pleiades Publishing, Ltd.
Журнал: Izvestiya - Atmospheric and Ocean Physics
Выпуск журнала: Vol. 54, Is. 9
Номера страниц: 979-985
ISSN журнала: 00014338
Издатель: Pleiades Publishing