Period analysis and trend forecast for soil temperature in the Qinghai-Xizang Highway by wavelet transformation
文献类型：期刊论文
| 作者 | Gao, Siru1,2; Wu, Qingbai1,3 |
| 刊名 | ENVIRONMENTAL EARTH SCIENCES
 |
| 出版日期 | 2015-08-01 |
| 卷号 | 74期号:4页码:2883-2891 |
| 关键词 | Qinghai-Xizang Highway Soil temperature Wavelet transformation Period Trend |
| ISSN号 | 1866-6280 |
| DOI | 10.1007/s12665-015-4313-y |
| 通讯作者 | Wu, Qingbai(qbwu@lzb.ac.cn) |
| 英文摘要 | Soil temperature is a key factor in engineering design, construction and operation involved in permafrost engineering, and is closely associated with engineering stability. Here, the study shows that the wavelet transformation analysis method provides a better understanding of soil temperature in the time-frequency domain. Semimonthly soil temperature time series for two monitoring sites along the Qinghai-Xizang Highway were analyzed using wavelet analysis from 1996 to 2012. Periodic characteristics and trends in soil temperature were determined. The results show that soil temperatures under natural ground and embankment settings have similar periodic change at both sites. Six periods of 18, 36, 78, 130, 220 and 342 half-months were observed. Cold/warm cycles in soil temperature were qualitatively appraised using Morlet wavelets for soil temperatures at these two sites over a cold period in 2012, as well as for soil temperature below embankment at site no. 5 over a warm period. The changes in soil temperature were quantitatively appraised by decomposing and reconstructing soil temperature using dbN wavelets; soil temperature at both sites showed an increasing trend over the past 17 years, with a rise in soil temperature under the natural ground and the embankment corresponding to 0.022 and 0.072 A degrees C a(-1) in warm permafrost and 0.048 and 0.007 A degrees C a(-1) in cold permafrost. |
| 收录类别 | SCI |
| WOS关键词 | TIME-SCALE CHARACTERISTICS ; PERMAFROST REGIONS ; RUNOFF VARIATIONS ; TIBET HIGHWAY ; PLATEAU ; RAILWAY ; CHINA ; CONSTRUCTION ; DEGRADATION ; EMBANKMENT |
| WOS研究方向 | Environmental Sciences & Ecology ; Geology ; Water Resources |
| WOS类目 | Environmental Sciences ; Geosciences, Multidisciplinary ; Water Resources |
| 语种 | 英语 |
| WOS记录号 | WOS:000358320700008 |
| 出版者 | SPRINGER |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2557063 |
| 专题 | 寒区旱区环境与工程研究所 |
| 通讯作者 | Wu, Qingbai |
| 作者单位 | 1.Chinese Acad Sci, Cold & Arid Reg Environm & Engn Res Inst, State Key Lab Frozen Soil Engn, Lanzhou 730000, Gansu, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Chinese Acad Sci, Cold & Arid Reg Environm & Engn Res Inst, Beiluhe Observ Stn Frozen Soil Environm & Engn, Lanzhou 730000, Peoples R China |
| 推荐引用方式 GB/T 7714 | Gao, Siru,Wu, Qingbai. Period analysis and trend forecast for soil temperature in the Qinghai-Xizang Highway by wavelet transformation[J]. ENVIRONMENTAL EARTH SCIENCES,2015,74(4):2883-2891. |
| APA | Gao, Siru,&Wu, Qingbai.(2015).Period analysis and trend forecast for soil temperature in the Qinghai-Xizang Highway by wavelet transformation.ENVIRONMENTAL EARTH SCIENCES,74(4),2883-2891. |
| MLA | Gao, Siru,et al."Period analysis and trend forecast for soil temperature in the Qinghai-Xizang Highway by wavelet transformation".ENVIRONMENTAL EARTH SCIENCES 74.4(2015):2883-2891. |
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来源：寒区旱区环境与工程研究所
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