Influences of local factors on permafrost occurrence and their implications for Qinghai-Xizang Railway design
文献类型：期刊论文
| 作者 | Cheng, GD |
| 刊名 | SCIENCE IN CHINA SERIES D-EARTH SCIENCES
 |
| 出版日期 | 2004-08-01 |
| 卷号 | 47期号:8页码:704-709 |
| 关键词 | local factor anomaly in permafrost occurrence cooled roadbed Qinghai-Xizang Railway climate warming |
| ISSN号 | 1006-9313 |
| DOI | 10.1360/02yd0438 |
| 通讯作者 | Cheng, GD(gdcheng@ns.lzb.ac.c) |
| 英文摘要 | The construction of the Qinghai-Xizang Railway is facing some challenges posed by the presence of warm and ice-rich permafrost and predicted climate warming. To resolve these issues and ensure the railway a success, adjustments will have to be made in design strategies and principles. This paper presents several examples of permafrost-distribution anomaly caused by site-specific conditions. It analyzes the mechanism through which these local factors influence the occurrence and preservation of permafrost by modifying the heat convection and conduction patterns, and the amount of solar radiation received by the ground surface. A good understanding of these anomalies in permafrost occurrence is significant as it may provide some hints on the techniques and measures we can use to artificially simulate similar effects. A number of measures can be taken to lower ground temperature and to counter the effect of climate warming. These measures include use of proper roadbed material and configuration, in order to adjust solar radiation, heat convection and conduction patterns. It is recommended that a new proactive approach be adopted in the railway design. This approach emphasizes the use of all the above-mentioned measures to cool down the roadbed. This is different from previous methods of preventing permafrost from thawing by utilizing more thermal resistant materials. |
| 收录类别 | SCI |
| WOS关键词 | THERMAL REGIME ; CLIMATE ; MODEL |
| WOS研究方向 | Geology |
| WOS类目 | Geosciences, Multidisciplinary |
| 语种 | 英语 |
| WOS记录号 | WOS:000224263700003 |
| 出版者 | SCIENCE CHINA PRESS |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2555632 |
| 专题 | 寒区旱区环境与工程研究所 |
| 通讯作者 | Cheng, GD |
| 作者单位 | Chinese Acad Sci, Cold & Arid Reg Environm & Engn Res Inst, State Key Lab Frozen Soil Engn, Lanzhou 730000, Peoples R China |
| 推荐引用方式 GB/T 7714 | Cheng, GD. Influences of local factors on permafrost occurrence and their implications for Qinghai-Xizang Railway design[J]. SCIENCE IN CHINA SERIES D-EARTH SCIENCES,2004,47(8):704-709. |
| APA | Cheng, GD.(2004).Influences of local factors on permafrost occurrence and their implications for Qinghai-Xizang Railway design.SCIENCE IN CHINA SERIES D-EARTH SCIENCES,47(8),704-709. |
| MLA | Cheng, GD."Influences of local factors on permafrost occurrence and their implications for Qinghai-Xizang Railway design".SCIENCE IN CHINA SERIES D-EARTH SCIENCES 47.8(2004):704-709. |
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来源：寒区旱区环境与工程研究所
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