Utilize este identificador para referenciar este registo: http://hdl.handle.net/10400.5/6998
Título: Spatial characterization of wildfire orientation patterns in California
Autor: Barros, Ana M.G.
Pereira, J.M.C.
Moritz, Max A.
Stephens, Scott L.
Palavras-chave: wildfire perimeter orientation
orographic channeling
circular statistics
California
watershed
Data: 2013
Citação: "Forests". ISSN 1999-4907. 4 (2013) 197-217
Resumo: Using 100 years of fire perimeter maps, we investigate the existence of geographical patterns in fire orientation across California. We computed fire perimeter orientation, at the watershed level, using principal component analysis. Circular statistics were used to test for the existence of preferential fire perimeter orientations. Where perimeters displayed preferential orientation, we searched for evidence of orographic channeling by comparing mean fire orientation with watershed orientation. Results show that in California, 49% of the burnt area is associated with watersheds, where fires displayed preferential orientation. From these, 25% of the burnt area is aligned along the NE/SW orientation and 18% in the E/W orientation. In 27 out of 86 watersheds with preferential fire alignment, there is also correspondence between mean fire orientation and watershed orientation. Topographic influence on fire spread and dominant wind patterns during the fire season can account for the consistency in fire perimeter orientation in these regions. Our findings highlight the historical pattern of fire perimeter orientation and identify watersheds with potential orographic channeling
Peer review: yes
URI: http://hdl.handle.net/10400.5/6998
DOI: 10.3390/f4010197
Versão do Editor: www.mdpi.com/journal/forests
Aparece nas colecções:DRAT - Artigos de Revistas

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