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Mapping Fire Scars in the Brazilian Cerrado Using AVHRR ImageryThe Brazilian cerrado, or savanna, spans an area of 1,800,000 square kilometers on the great plateau of Central Brazil. Large fires covering hundreds of square kilometers, frequently occur in wildland areas of the cerrado, dominated by grasslands or grasslands mixed with shrubs and small trees, and also within area in the cerrado used for agricultural purposes, particularly for grazing. Smaller fires, typically extending over arm of a few square kilometers or less, are associated with the clewing of crops, such as dry land rice. A method for mapping fire scars and differentiating them from extensive areas of bare sod with AVHRR bands 1 (.55 -.68 micrometer) and 3 (3.5 - 3.9 micrometers) and measures of performance based on comparison with maps of fires with Landsat imagery will be presented. Methods of estimating total area burned from the AVHRR fire scar map will be discussed and related to land use and scar size.
Document ID
20020034879
Acquisition Source
Ames Research Center
Document Type
Conference Paper
Authors
Hlavka, C. A.
(NASA Ames Research Center Moffett Field, CA United States)
Ambrosia, V. G.
(Johnson Controls World Services Moffett Field, CA United States)
Brass, J. A.
(NASA Ames Research Center Moffett Field, CA United States)
Rezendez, A.
(Stanford Univ. Stanford, CA United States)
Alexander, S.
(National Academy of Sciences - National Research Council Moffett Field, CA United States)
Guild, L. S.
(Johnson Controls World Services Moffett Field, CA United States)
Peterson, David L.
Date Acquired
August 20, 2013
Publication Date
January 1, 1995
Subject Category
Earth Resources And Remote Sensing
Meeting Information
Meeting: Chapman Conference on Biomass Burning and Global Change
Location: Williamsburg, VA
Country: United States
Start Date: March 13, 1995
End Date: March 17, 1995
Funding Number(s)
PROJECT: RTOP 579-43-03-10
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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