Permafrost environment monitoring on the Qinghai-Tibet Plateau using time series ASAR images
文献类型:期刊论文
作者 | Li, Zhen1; Tang, Panpan1; Zhou, Jianmin1; Tian, Bangsen1; Chen, Quan1; Fu, Sitao1 |
刊名 | INTERNATIONAL JOURNAL OF DIGITAL EARTH
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出版日期 | 2015 |
卷号 | 8期号:10页码:3798-3818 |
关键词 | Qinghai-Tibet Plateau ASAR permafrost environment backscattering coefficients deformation climate warming |
通讯作者 | Tang, PP (reprint author), Chinese Acad Sci, Inst Remote Sensing & Digital Earth, Key Lab Digital Earth, Beijing, Peoples R China. |
英文摘要 | The permafrost in Qinghai-Tibet Plateau (QTP) has long been the focus of many researchers. In this study, we first use the method that integrates synthetic aperture radar (SAR) intensity and phase information to monitor permafrost environment in the Beiluhe Region, using time series advanced SAR images. The backscattering coefficients (sigma(0)) and deformation were extracted for the main features, and the influences of meteorological conditions to them were also quantified. The results show that both the change in s0 and surface deformation are closely related to the active layer, and the deformation is also affected by the permafrost table. First, over meadow and sparse vegetation regions, sigma(0) rose about 6.9 and 4 dB from the freezing to thawing period, respectively, which can be mainly attributed to the thaw of the active layer and increased precipitation. Second, seasonal deformation, derived from the freeze-thaw cycle of the active layer, was characteristic of frost heave and thaw settlement and exhibited a negative correlation with air temperature. Its magnitude was larger than 1 cm in a seasonal cycle. Last, significant secular settlement was observed, with rates ranging from -16 to 2 mm/a, and it was primarily due to the thaw of the permafrost table caused by climate warming. |
研究领域[WOS] | Geography, Physical ; Remote Sensing |
收录类别 | SCI |
语种 | 英语 |
WOS记录号 | WOS:000370795000005 |
源URL | [http://ir.ceode.ac.cn/handle/183411/38298] ![]() |
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.[Li, Zhen 2.Tang, Panpan 3.Zhou, Jianmin 4.Tian, Bangsen 5.Chen, Quan 6.Fu, Sitao] Chinese Acad Sci, Inst Remote Sensing & Digital Earth, Key Lab Digital Earth, Beijing, Peoples R China 7.[Tang, Panpan] Univ Chinese Acad Sci, Inst Remote Sensing & Digital Earth, Beijing, Peoples R China |
推荐引用方式 GB/T 7714 | Li, Zhen,Tang, Panpan,Zhou, Jianmin,et al. Permafrost environment monitoring on the Qinghai-Tibet Plateau using time series ASAR images[J]. INTERNATIONAL JOURNAL OF DIGITAL EARTH,2015,8(10):3798-3818. |
APA | Li, Zhen,Tang, Panpan,Zhou, Jianmin,Tian, Bangsen,Chen, Quan,&Fu, Sitao.(2015).Permafrost environment monitoring on the Qinghai-Tibet Plateau using time series ASAR images.INTERNATIONAL JOURNAL OF DIGITAL EARTH,8(10),3798-3818. |
MLA | Li, Zhen,et al."Permafrost environment monitoring on the Qinghai-Tibet Plateau using time series ASAR images".INTERNATIONAL JOURNAL OF DIGITAL EARTH 8.10(2015):3798-3818. |
入库方式: OAI收割
来源:遥感与数字地球研究所
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