Monitoring and evaluation of flooding extent by using the Getis statistic of the SSM/I data

Author

Chen, Yi ; Zheng, Fu-Hai ; Zhang, Nan-Xiong ; Jin, Ya-Qiu

Author_Institution

Wave Scattering & Remote Sensing Center, Fudan Univ., Shanghai, China

Volume

2

fYear

1999

fDate

1999

Firstpage

867

Abstract

Observation by the DMSP SSM/I over flooding area along the Yangzi River, China during July-August 1998 is studied. A flooding index FI defined by the difference of horizontally-polarized brightness temperature at 37 and 85 GHz channels is proposed to detect flooding. Spatial and temporal variation of the FI index during flooding July-August is demonstrated. The Getis statistics, as a local autocorrelation function, is discussed to show spatial clustering pattern and correlation of high value FI, and is applied to monitoring and evaluation of flooding extent and temporal evolution

Keywords

hydrological techniques; radiometry; remote sensing; rivers; 37 GHz; 85 GHz; AD 1998; China; EHF; Getis statistic; SSM/I; Yangtze; Yangzi River; flood; flooding area; flooding extent; flooding index; hydrology; measurement technique; microwave radiometry; mm wave; remote sensing; river; spatial extent; Autocorrelation; Brightness; Floods; Land surface; Polarization; Rain; Remote monitoring; Rivers; Scattering; Statistics;

fLanguage

English

Publisher

ieee

Conference_Titel

Geoscience and Remote Sensing Symposium, 1999. IGARSS '99 Proceedings. IEEE 1999 International

Conference_Location

Hamburg

Print_ISBN

0-7803-5207-6

Type

conf

DOI

10.1109/IGARSS.1999.774468

Filename

774468