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    Assessment of Snow Status Changes Using L-HH Temporal-Coherence Components at Mt. Dagu, China

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    Author
    Wang, Yong; Wang, Lei; Li, Hong; Yang, Yuanyuan; Yang, Taoli
    Abstract
    Multitemporal Phased Array type L-band Synthetic Aperture Radar (PALSAR) horizontally transmitted and horizontally received (HH) coherence data was decomposed into temporal-coherence, spatial-coherence, and thermal noise components. The multitemporal data spanned between February and May of 2008, and consisted of two pairs of interferometric SAR (InSAR) images formed by consecutive repeat passes. With the analysis of ancillary data, a snow increase process and a snow decrease process were determined. Then, the multiple temporal-coherence components were used to study the variation of thawing and freezing statuses of snow because the components can mostly reflect the temporal change of the snow that occurred between two data acquisitions. Compared with snow mapping results derived from optical images, the outcomes from the snow increase process and the snow decrease process reached an overall accuracy of 71.3% and 79.5%, respectively. Being capable of delineating not only the areas with or without snow cover but also status changes among no-snow, wet snow, and dry snow, we have developed a critical means to assess the water resource in alpine areas.
    URI
    http://hdl.handle.net/10342/8068
    Subject
    change detection; interferometric SAR (InSAR); multitemporal coherence data; snow cover and status change; temporal-coherence component
    Date
    2015
    Citation:
    APA:
    Wang, Yong, & Wang, Lei, & Li, Hong, & Yang, Yuanyuan, & Yang, Taoli. (January 2015). Assessment of Snow Status Changes Using L-HH Temporal-Coherence Components at Mt. Dagu, China. Remote Sensing,, (7:9), p.. Retrieved from http://hdl.handle.net/10342/8068

    Display/Hide MLA, Chicago and APA citation formats.

    MLA:
    Wang, Yong, and Wang, Lei, and Li, Hong, and Yang, Yuanyuan, and Yang, Taoli. "Assessment of Snow Status Changes Using L-HH Temporal-Coherence Components at Mt. Dagu, China". Remote Sensing,. 7:9. (.), January 2015. February 26, 2021. http://hdl.handle.net/10342/8068.
    Chicago:
    Wang, Yong and Wang, Lei and Li, Hong and Yang, Yuanyuan and Yang, Taoli, "Assessment of Snow Status Changes Using L-HH Temporal-Coherence Components at Mt. Dagu, China," Remote Sensing, 7, no. 9 (January 2015), http://hdl.handle.net/10342/8068 (accessed February 26, 2021).
    AMA:
    Wang, Yong, Wang, Lei, Li, Hong, Yang, Yuanyuan, Yang, Taoli. Assessment of Snow Status Changes Using L-HH Temporal-Coherence Components at Mt. Dagu, China. Remote Sensing,. January 2015; 7(9) . http://hdl.handle.net/10342/8068. Accessed February 26, 2021.
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