干旱区生态环境知识资源中心(Arid): First application of FASAT-Charlie Imagery for the assessment of semiarid prairies in Chile

Arid

	First application of FASAT-Charlie Imagery for the assessment of semiarid prairies in Chile
	Santamaria-Artigas, A.; Mattar, C.; Duran-Alarcon, C.; Olivera, L.; Inzunza, M.; Tapia, D.; Escobar-Lavin, E.
通讯作者	Santamaria-Artigas, A
来源期刊	REVISTA DE TELEDETECCION
ISSN	1133-0953
EISSN	1988-8740
出版年	2013
期号	40 页码:78-87
英文摘要	The semi-arid region of Chile has gained great relevance in the recent decades mainly due to the constant desertification process it's suffering, the increase of climatic extreme events occurrence and the decrease in the precipitation volume. This scenario makes the region a zone of great scientific relevance to the scientific community for the study and analysis of recent climatic events and their relationship with the land cover change process. In this context, satellite technologies now available to Chile could help towards a consistent delivery of updated information from this area. The Satellite System for Earth Observation (SSOT/Fasat-C) controlled by the Chilean Air Force (FACH) carries on board the multispectral sensor NAOMI-1 which has a spatial resolution of 5.8 meters for the blue (455-520 nm), green (528-588 nm), red (625-695 nm) and near infrared (758-881 nm) bands, and a spatial resolution of 1.45 meters for the panchromatic band (455-744 nm). Among its main objectives are land use change detection and monitoring in the Chilean territory, in order to create the basis for a response system in the case of extreme events, and to allow time series study of natural surfaces affected by climate change. In this paper the radiometric calibration and atmospheric correction of a Fasat-Charlie scene was carried out. Spectral signatures of vegetation, bare soil (Aridisol) and concrete were obtained from surface reflectance values. The spectral behavior was then compared with information from the Aster Spectral Library (ASL), and a similar behavior was found. Then, four vegetation indexes were calculated, those are: Simple Ratio (SR), NDVI (Normalized Difference Vegetation Index), LAI (Leaf Area Index) and MSAVI (Modified Soil Adjusted Vegetation Index). The estimated vegetation indexes showed low magnitudes, which could be explained by the scarce characteristics of the vegetation. The MSAVI index showed to be the one that best represented this scarce distribution of the vegetation. These results show the potential that the Fasat-Charlie has as a tool for the monitoring, study and analysis of land covers affected by constant global changes. Key words: Fasat-C, Semi-arid region, vegetation index, Chile.
英文关键词	Fasat-C Semi-arid region vegetation index Chile
类型	Article
语种	西班牙语
开放获取类型	DOAJ Gold
收录类别	ESCI
WOS记录号	WOS:000215990600009
WOS关键词	LAND-COVER DYNAMICS ; ATMOSPHERIC CORRECTION ; URBAN ; CLASSIFICATION
WOS类目	Remote Sensing
WOS研究方向	Remote Sensing
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/330350
作者单位	[Santamaria-Artigas, A.; Mattar, C.; Duran-Alarcon, C.; Olivera, L.] Univ Chile, LAB, Dpto Ciencias Ambientales & Recursos Nat Renovab, Av Santa Rosa 11315, Santiago 11315, Chile; [Inzunza, M.; Tapia, D.; Escobar-Lavin, E.] Fuerza Aerea Chile, Grp Operac Espaci, Santiago, Spain
推荐引用方式 GB/T 7714	Santamaria-Artigas, A.,Mattar, C.,Duran-Alarcon, C.,et al. First application of FASAT-Charlie Imagery for the assessment of semiarid prairies in Chile[J],2013(40):78-87.
APA	Santamaria-Artigas, A..,Mattar, C..,Duran-Alarcon, C..,Olivera, L..,Inzunza, M..,...&Escobar-Lavin, E..(2013).First application of FASAT-Charlie Imagery for the assessment of semiarid prairies in Chile.REVISTA DE TELEDETECCION(40),78-87.
MLA	Santamaria-Artigas, A.,et al."First application of FASAT-Charlie Imagery for the assessment of semiarid prairies in Chile".REVISTA DE TELEDETECCION .40(2013):78-87.