Quantifying the spatio-temporal variability of total water content in seasonally frozen soil using actively heated fiber Bragg grating sensing
文献类型：期刊论文
| 作者 | Sun, Mengya3; Shi, Bin3; Zhang, Chengcheng3; Liu, Jie3; Guo, Junyi3; Zheng, Xing3; Wang, Yunqiang2; Wei, Guangqing1 |
| 刊名 | JOURNAL OF HYDROLOGY
 |
| 出版日期 | 2022-03-01 |
| 卷号 | 606页码:14 |
| ISSN号 | 0022-1694 |
| 关键词 | Total water content Actively heated fiber Bragg grating (AHFO-FBG) Seasonally frozen soil Calibration model In-situ measurement Freezing depth estimation |
| DOI | 10.1016/j.jhydrol.2021.127386 |
| 通讯作者 | Shi, Bin(shibin@nju.edu.cn) |
| 英文摘要 | Actively heated fiber-optic (AHFO) method has become a research focus for soil water content measurement in recent years due to its advantages such as small size, distributed measurement and good durability. However, the AHFO method is presently coupled to distributed temperature sensing (AHFO-DTS) which is inevitably limited by low temperature measurement accuracy and spatial resolution. Furthermore, the existing studies about AHFO method do not consider the existence of frozen soil caused by temperature changes, which further limits its application in the field. Here a new method for total water content measurement in frozen soil using actively heated fiber Bragg grating (AHFO-FBG) sensing is proposed for the first time, which directly determines the calibration formulas of frozen soil under different soil temperatures from the calibration formula of unfrozen soil. Moreover, the feasibility and reliability of AHFO-FBG technology are proved through laboratory calibration tests and in-situ monitoring data of Chinese loess, and the temporal and spatial distribution of total water content in shallow seasonally frozen loess is also revealed. It is suggested that the AHFO-FBG technology can complement with the traditional techniques to achieve quasi-distributed and in-situ total water content monitoring in seasonally frozen soil. |
| WOS关键词 | TIME-DOMAIN REFLECTOMETRY ; UNFROZEN WATER ; THERMAL-CONDUCTIVITY ; ICE CONTENT ; TEMPERATURE ; MOISTURE ; MODEL ; SURFACE ; FROST ; FLUX |
| 资助项目 | National Natural Science Foundation of China[42030701] ; National Natural Science Foundation of China[41427801] ; Postgraduate Research & Practice Innova-tion Program of Jiangsu Province[KYCX21_0057] ; China Scholarship Council[202006190259] |
| WOS研究方向 | Engineering ; Geology ; Water Resources |
| 语种 | 英语 |
| 出版者 | ELSEVIER |
| WOS记录号 | WOS:000752482100002 |
| 资助机构 | National Natural Science Foundation of China ; Postgraduate Research & Practice Innova-tion Program of Jiangsu Province ; China Scholarship Council |
| 源URL | [http://ir.ieecas.cn/handle/361006/17433]  |
| 专题 | 地球环境研究所_生态环境研究室 |
| 通讯作者 | Shi, Bin |
| 作者单位 | 1.Suzhou NanZee Sensing Technol Co Ltd, Suzhou 215123, Peoples R China 2.Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian 710061, Peoples R China 3.Nanjing Univ, Sch Earth Sci & Engn, Nanjing 210023, Peoples R China |
| 推荐引用方式 GB/T 7714 | Sun, Mengya,Shi, Bin,Zhang, Chengcheng,et al. Quantifying the spatio-temporal variability of total water content in seasonally frozen soil using actively heated fiber Bragg grating sensing[J]. JOURNAL OF HYDROLOGY,2022,606:14. |
| APA | Sun, Mengya.,Shi, Bin.,Zhang, Chengcheng.,Liu, Jie.,Guo, Junyi.,...&Wei, Guangqing.(2022).Quantifying the spatio-temporal variability of total water content in seasonally frozen soil using actively heated fiber Bragg grating sensing.JOURNAL OF HYDROLOGY,606,14. |
| MLA | Sun, Mengya,et al."Quantifying the spatio-temporal variability of total water content in seasonally frozen soil using actively heated fiber Bragg grating sensing".JOURNAL OF HYDROLOGY 606(2022):14. |
入库方式： OAI收割
来源：地球环境研究所
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