Estimating Snow Depth and Snow Water Equivalence Using Repeat-Pass Interferometric SAR in the Northern Piedmont Region of the Tianshan Mountains
Joint Authors
Li, Hui
Wang, Zuo
He, Guangjun
Man, Wang
Source
Issue
Vol. 2017, Issue 2017 (31 Dec. 2017), pp.1-17, 17 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2017-04-12
Country of Publication
Egypt
No. of Pages
17
Main Subjects
Abstract EN
Snow depth and Snow Water Equivalence (SWE) are important parameters for hydrological applications.
In this application, a theoretical method of snow depth estimation with repeat-pass InSAR measurements was proposed, and a preliminary sensitivity analysis of snow phase changes versus the incident angle and snow density was developed.
Moreover, the snow density and incident angle parameters were analyzed and calibrated, and the local incident angle was used as a substitute for the satellite incident angle to improve the snow depth estimation.
From the results, the coherence images showed that a high degree of coherence can be found for dry snow, and, apart from the effect of snow, land use/cover change due to a long temporal baseline and geometric distortion due to the rugged terrain were the main constraints for InSAR technique to measure snow depth and SWE in this area.
The result of snow depth estimation between July 2008 and February 2009 demonstrated that the average snow depth was about 20 cm, which was consistent with the field survey results.
The areal coverage of snow distribution estimated from the snow depth and SWE results was consistent with snow cover obtained from HJ-1A CCD optical data at the same time.
American Psychological Association (APA)
Li, Hui& Wang, Zuo& He, Guangjun& Man, Wang. 2017. Estimating Snow Depth and Snow Water Equivalence Using Repeat-Pass Interferometric SAR in the Northern Piedmont Region of the Tianshan Mountains. Journal of Sensors،Vol. 2017, no. 2017, pp.1-17.
https://search.emarefa.net/detail/BIM-1187575
Modern Language Association (MLA)
Li, Hui…[et al.]. Estimating Snow Depth and Snow Water Equivalence Using Repeat-Pass Interferometric SAR in the Northern Piedmont Region of the Tianshan Mountains. Journal of Sensors No. 2017 (2017), pp.1-17.
https://search.emarefa.net/detail/BIM-1187575
American Medical Association (AMA)
Li, Hui& Wang, Zuo& He, Guangjun& Man, Wang. Estimating Snow Depth and Snow Water Equivalence Using Repeat-Pass Interferometric SAR in the Northern Piedmont Region of the Tianshan Mountains. Journal of Sensors. 2017. Vol. 2017, no. 2017, pp.1-17.
https://search.emarefa.net/detail/BIM-1187575
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1187575