Characterizing C-band backscattering from thermokarst lake ice on the Qinghai-Tibet Plateau
文献类型：期刊论文
| 作者 | Tian, Bangsen1; Li, Zhen1; Engram, Melanie J.1; Niu, Fujun1; Tang, Panpan1; Zou, Pengfei1; Xu, Juan1 |
| 刊名 | ISPRS JOURNAL OF PHOTOGRAMMETRY AND REMOTE SENSING
 |
| 出版日期 | 2015 |
| 卷号 | 104页码:6414-6432 |
| 关键词 | Thermokarst lake ice Qinghai-Tibet Plateau Synthetic aperture radar C-band Radiative transfer model |
| 通讯作者 | Tian, BS (reprint author), Chinese Acad Sci, Inst Remote Sensing & Digital Earth, Key Lab Digital Earth Sci, Beijing 100094, Peoples R China. |
| 英文摘要 | On the basis of weather observations and field measurements of lake ice, this study investigates multi-temporal C-band W-polarized radar backscattering values from the thermokarst lakes and alpine meadow on the QTP during the period 2003-2010. In order to understand the scattering mechanism of lake ice, a scattering model is developed for lake ice that updates some assumptions adopted in previously developed models, including the roughness of the ice-water interface and the shape of vertically stacked centimeter-sized bubbles in the lake ice. We conclude the following: First, with a incidence angle range near 24 degrees, the backscattering intensities of C-band W-polarized. ENVISAT-ASAR data exhibit a strong dependence on time, which is related to the processes of ice growth and decay on the QTP. Some unique backscattering characteristics of lake ice in this high-altitude region, as compared to those for high-latitude regions, are also discussed and documented in the paper. Secondly, the timing of lake ice-on in fall and ice-off in spring for this region can be identified in radar images by using a threshold of -12 dB for the backscatter intensity of the surrounding alpine meadow. Finally, the results of applying the scattering model indicate that surface scattering from the ice-water interface and volume scattering from gas bubbles embedded in the lake ice are the dominant scattering mechanisms for C-band VV polarized SAR and that the roughness of the ice-water interface and also bubble size are the most sensitive factors. (c) 2015 International Society for Photogrammetry and Remote Sensing, Inc. (ISPRS). Published by Elsevier B.V. All rights reserved. |
| 研究领域[WOS] | Geography, Physical ; Geosciences, Multidisciplinary ; Remote Sensing ; Imaging Science & Photographic Technology |
| 收录类别 | SCI ; EI |
| 语种 | 英语 |
| WOS记录号 | WOS:000355030700006 |
| 源URL | [http://ir.ceode.ac.cn/handle/183411/38197]  |
| 专题 | 遥感与数字地球研究所_SCI/EI期刊论文_期刊论文 |
| 作者单位 | 1.[Tian, Bangsen 2.Li, Zhen 3.Tang, Panpan 4.Zou, Pengfei 5.Xu, Juan] Chinese Acad Sci, Inst Remote Sensing & Digital Earth, Key Lab Digital Earth Sci, Beijing 100094, Peoples R China 6.[Engram, Melanie J.] Univ Alaska Fairbanks, Water & Environm Res Ctr, Fairbanks, AK 99775 USA 7.[Niu, Fujun] Chinese Acad Sci, Inst Cold & Arid Reg Environm & Engn Res, State Key Lab Frozen Soil Engn, Lanzhou 730000, Peoples R China |
| 推荐引用方式 GB/T 7714 | Tian, Bangsen,Li, Zhen,Engram, Melanie J.,et al. Characterizing C-band backscattering from thermokarst lake ice on the Qinghai-Tibet Plateau[J]. ISPRS JOURNAL OF PHOTOGRAMMETRY AND REMOTE SENSING,2015,104:6414-6432. |
| APA | Tian, Bangsen.,Li, Zhen.,Engram, Melanie J..,Niu, Fujun.,Tang, Panpan.,...&Xu, Juan.(2015).Characterizing C-band backscattering from thermokarst lake ice on the Qinghai-Tibet Plateau.ISPRS JOURNAL OF PHOTOGRAMMETRY AND REMOTE SENSING,104,6414-6432. |
| MLA | Tian, Bangsen,et al."Characterizing C-band backscattering from thermokarst lake ice on the Qinghai-Tibet Plateau".ISPRS JOURNAL OF PHOTOGRAMMETRY AND REMOTE SENSING 104(2015):6414-6432. |
入库方式： OAI收割
来源：遥感与数字地球研究所
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