ETM monitoring model on suspended sediment concentration in different seasons in Taihu Lake, China

Yuchun Wei; Jiazhu Huang; Xuwen Li; Jie Guang

doi:10.1117/12.673651

19 May 2006 ETM monitoring model on suspended sediment concentration in different seasons in Taihu Lake, China

Yuchun Wei, Jiazhu Huang, Xuwen Li, Jie Guang

Proceedings Volume 6199, Remote Sensing and Space Technology for Multidisciplinary Research and Applications; 619902 (2006) https://doi.org/10.1117/12.673651
Event: Remote Sensing and Space Technology for Multidisciplinary Research and Applications, 2005, Beijing, China

Abstract

The Taihu Lake in China is shallow and turbid. Its water body covers 2338 km², and water depth varies between 2 and 4 meters. To monitor water quality in such a large lake, TM is probably the best remote sensing data due to its spatial resolution. While some modeling works have been done on relationships between total suspended sediment concentration (SS) and reflectance in TM image, the TM bands being used in the model are still under discussion. In this paper, a model was developed on relationships between SS and ETM in summer and winter in Taihu Lake. ETM image is geo-referenced with 1:50,000 topographic map and digital number of pixel is converted to planetary reflectance. An index called NDSS from ETM image is introduced, where NDSS= (B3-B1)/(B3+B1). The ETM monitoring model of SS in summer and winter was built through regression analysis. The basic model form is SS=f(NDSS), goodness-of-fit statistics R² is from 0.51 to 0.72, and the model is significant under p=0.005. Obvious difference exists between the summer model and winter model. In the summer model, spatial variation of water body must be considered due to the dynamic water environment. The same variation, however, can be ignored in winter model.

Citation Download Citation

Yuchun Wei, Jiazhu Huang, Xuwen Li, and Jie Guang "ETM monitoring model on suspended sediment concentration in different seasons in Taihu Lake, China", Proc. SPIE 6199, Remote Sensing and Space Technology for Multidisciplinary Research and Applications, 619902 (19 May 2006); https://doi.org/10.1117/12.673651

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