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Rare events detection in NDVI time-series using jarque-bera test

Domain:

climategeospatial

Record type:

paper
Creator:
Ben Abbes, AliEssFarBar
Editor:
LabLabDép
Publisher:
CCSD
Host:avatar
International audience Nowadays, Normalized Difference Vegetation Index (NDVI) time-series has been successfully used in research regarding global environmental change. NDVI time series have proven to be a useful means of indicating drought -related vegetation conditions, due to their real-time coverage across the globe at relatively high spatial resolution. In this paper, we propose a method for detecting rare events in NDVI series. These events are particularly rare and infrequent which increases their complexity of detecting and analyzing them. The proposed method is based on the analysis of the random component by Jarque-Bera test to verify the presence of rare events and obtain their features (time and amplitude). For validation, we have used a database for regions in Northwestern of Tunisia. These data come from MODIS for a period from 18 February 2000 to 17 November 2013 at a spatial resolution of 250 m by 250m.

Visit

hal.science

Languages

BiraKako

Tags

[SPI.SIGNAL]Engineering Sciences [physics]/Signal and Image processing

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