Research of variations in 1961 - 2001 floods and droughts at multiple space and time scales in the Fujian province of China

Jianyun Gao; Zhihong Jiang; Ziwang Deng; Xiaolan Zhou; Rongyan Zhang; Jiangjin Lv

doi:10.1117/12.676866

27 September 2006 Research of variations in 1961 - 2001 floods and droughts at multiple space and time scales in the Fujian province of China

Jianyun Gao, Zhihong Jiang, Ziwang Deng, Xiaolan Zhou, Rongyan Zhang, Jiangjin Lv

Author Affiliations +

Proceedings Volume 6298, Remote Sensing and Modeling of Ecosystems for Sustainability III; 62981Q (2006) https://doi.org/10.1117/12.676866
Event: SPIE Optics + Photonics, 2006, San Diego, California, United States

Abstract

Using the 1961-2001 rainfall datasets from 25 typical stations in Fujian Province treated by means of Empirical Orthogonal Function (EOF), Fast Fourier Function (FFT), Continuous Wavelet Transform (CWT) and Orthogonal Wavelet Transform (OWT) study is made of sequences of flood/drought indices (Z index) in different seasons. Evidence suggests that 1) the regional flood/drought events have significant 2~3 year periods in 1965-1975 and the 1990s; 2) rainfall amount in the south opposite to that in the north shows pronounced 1- and 3~ 4-yearly periods after the mid 1980s; 3) quantitatively, precipitation occurs in the west to middle in an opposite way to the other parts of the province, with noticeable 1~2 yearly periods in 1985 - 1998, and more appreciable 9~13-yearly periods after the 1980s; 4) within the study period (1961-2001) the drought trend is more apparent in the south (east) than in the north (west), particularly in the 1990s; 5) the regional climate is relatively wetter (drier) in the 1960s and 1980s (1970s and 1990s).

Citation Download Citation

Jianyun Gao, Zhihong Jiang, Ziwang Deng, Xiaolan Zhou, Rongyan Zhang, and Jiangjin Lv "Research of variations in 1961 - 2001 floods and droughts at multiple space and time scales in the Fujian province of China", Proc. SPIE 6298, Remote Sensing and Modeling of Ecosystems for Sustainability III, 62981Q (27 September 2006); https://doi.org/10.1117/12.676866

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available