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Proceedings Paper

Study on the spring drought rule in the karst region of Yunnan and Guizhou Plateau in China
Author(s): Qilong Miao; Shujie Yuan; Lan Shi; Xiaoping Gu
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Paper Abstract

Using the daily precipitation data from March to May of 88 stations from 1951 to 2004 in the karst region of Yunnan and Guizhou plateau (KRYGP), the indexes of the spring drought intensity (ISDI) are calculated. The temporal series of the ISDI are analyzed by Morlet wavelet. The complex multi-time scale structure of the ISDI variation is studied. The results show that the ISDI sequence variations have the discontinuity points and apparent 22-, 3- and 2- yearly periods, with 2-yearly as the most pronounced period. The drought degree will get lighter (heavier) in extra-heavy and severe drought regions (medium and light drought ones) by 2-yearly period forecast. We also study the spring drought's spatial and temporal feature, circulation forms.

Paper Details

Date Published: 14 November 2007
PDF: 5 pages
Proc. SPIE 6790, MIPPR 2007: Remote Sensing and GIS Data Processing and Applications; and Innovative Multispectral Technology and Applications, 67903Z (14 November 2007); doi: 10.1117/12.746860
Show Author Affiliations
Qilong Miao, Nanjing Univ. of Information Science and Technology (China)
Shujie Yuan, Nanjing Univ. of Information Science and Technology (China)
Agricultural Univ. of Hebei (China)
Lan Shi, Nanjing Univ. of Information Science and Technology (China)
Xiaoping Gu, Guizhou Key Lab. of Mountainous Climate and Resources (China)


Published in SPIE Proceedings Vol. 6790:
MIPPR 2007: Remote Sensing and GIS Data Processing and Applications; and Innovative Multispectral Technology and Applications

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