Freeze/Thaw-Induced Deformation Monitoring and Assessment of the Slope in Permafrost Based on Terrestrial Laser Scanner and GNSS
文献类型：期刊论文
| 作者 | Luo, Lihui1,2; Ma, Wei2; Zhang, Zhongqiong2; Zhuang, Yanli1; Zhang, Yaonan1; Yang, Jinqiang3; Cao, Xuecheng3; Liang, Songtao3; Mu, Yanhu2 |
| 刊名 | REMOTE SENSING
 |
| 出版日期 | 2017-03-01 |
| 卷号 | 9期号:3页码:20 |
| ISSN号 | 2072-4292 |
| 关键词 | freeze-thaw cycle global navigation satellite system Qinghai-Tibet engineering corridor slope in permafrost terrestrial laser scanning |
| DOI | 10.3390/rs9030198 |
| 通讯作者 | Luo, Lihui(luolh@lzb.ac.cn) |
| 英文摘要 | Most previous studies of the Qinghai-Tibet engineering corridor (QTEC) have focused on the impacts of climate change on thaw-induced slope failures, whereas few have considered freeze-induced slope failures. Terrestrial laser scanning was used in combination with global navigation satellite systems to monitor three-dimensional surface changes between 2014 and 2015 on the slope of permafrost in the QTEC, which experienced two thawing periods and a freezing period. Soil temperature and moisture sensors were also deployed at 11 depths to reveal the hydrological-thermal dynamics of the active layer. We analyzed scanned surface changes in the slope based on comparisons of multi-temporal point cloud data to determine how the hydrological-thermal process affected active layer deformation during freeze-thaw cycles, thereby comprehensively quantifying the surface deformation. During the two thawing periods, the major structure of the slope exhibited subsidence trends, whereas the major structure of the slope had an uplift trend in the freezing period. The seasonal subsidence trend was caused by thaw settlement and the seasonal uplift trend was probably due to frost heaving. This occurred mainly because the active layer and the upper permafrost underwent a phase transition due to heat transfer. The ground movements occurred approximately in the soil temperature conduction direction between the top of the soil and the permafrost table. The elevation deformation range was mainly -0.20 m to 0.20 m. Surface volume increases with heaving after freezing could have compensated for the loss of thawing twice and still led to the upward swelling of the slope. Thus, this type of slope in permafrost is dominated by frost heave. Deformation characteristics of the slope will support enhanced decision making regarding the implementation of remote sensing and hydrological-thermal measurement technologies to monitor changes in the slopes in permafrost adjacent to engineering corridors, thereby improving the understanding and assessment of hazards. |
| 收录类别 | SCI |
| WOS关键词 | ACTIVE-LAYER THICKNESS ; LINE SAR INTERFEROMETRY ; QINGHAI-TIBET PLATEAU ; MOUNTAIN AREAS ; RIVER-BASIN ; ROCK WALLS ; STABILITY ; CHINA ; THAW ; VARIABILITY |
| WOS研究方向 | Remote Sensing |
| WOS类目 | Remote Sensing |
| 语种 | 英语 |
| 出版者 | MDPI AG |
| WOS记录号 | WOS:000398720100014 |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2557576 |
| 专题 | 寒区旱区环境与工程研究所 |
| 通讯作者 | Luo, Lihui |
| 作者单位 | 1.Chinese Acad Sci, Cold & Arid Reg Environm & Engn Res Inst, Lanzhou 730000, Gansu, Peoples R China 2.Chinese Acad Sci, Cold & Arid Reg Environm & Engn Res Inst, State Key Lab Frozen Soils Engn, Lanzhou 730000, Gansu, Peoples R China 3.61243 Regiment, Lanzhou 730000, Gansu, Peoples R China |
| 推荐引用方式 GB/T 7714 | Luo, Lihui,Ma, Wei,Zhang, Zhongqiong,et al. Freeze/Thaw-Induced Deformation Monitoring and Assessment of the Slope in Permafrost Based on Terrestrial Laser Scanner and GNSS[J]. REMOTE SENSING,2017,9(3):20. |
| APA | Luo, Lihui.,Ma, Wei.,Zhang, Zhongqiong.,Zhuang, Yanli.,Zhang, Yaonan.,...&Mu, Yanhu.(2017).Freeze/Thaw-Induced Deformation Monitoring and Assessment of the Slope in Permafrost Based on Terrestrial Laser Scanner and GNSS.REMOTE SENSING,9(3),20. |
| MLA | Luo, Lihui,et al."Freeze/Thaw-Induced Deformation Monitoring and Assessment of the Slope in Permafrost Based on Terrestrial Laser Scanner and GNSS".REMOTE SENSING 9.3(2017):20. |
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来源：寒区旱区环境与工程研究所
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