| An overview of precipitation isotopes over the Extensive Hexi Region in NW China | |
| Guo, Xiaoyan1,3; Feng, Qi1,2; Wei, Yongping4; Li, Zongxing1; Liu, Wei1 | |
| 刊名 | ARABIAN JOURNAL OF GEOSCIENCES
 |
| 2015-07-01 | |
| 卷号 | 8期号:7页码:4365-4378 |
| 关键词 | Extensive Hexi Corridor Precipitation Stable isotope d-excess Moisture sources |
| ISSN号 | 1866-7511 |
| DOI | 10.1007/s12517-014-1521-9 |
| 通讯作者 | Feng, Qi(qifeng@lzb.ac.cn) |
| 英文摘要 | Until now, most studies of the isotopic composition of precipitation in the Extensive Hexi Region have described individual sites. A systematic study considering the regional atmospheric circulation, the complex topography, and the reevaporation process is lacking. This paper compares and summarizes previous studies in the Extensive Hexi Region, to provide a regional picture of the characteristics of isotopic composition of precipitation and moisture sources. delta O-18 and delta D values exhibit significant seasonal variability, with higher values in summer and lower values in winter due to the seasonality of temperature and moisture sources. The temperature effect is more pronounced in the Extensive Hexi Region than in northwest China. The altitude effects are also evident with a gradient of -0.23 parts per thousand/100 m for delta O-18 and -1.67 parts per thousand/100 m for delta D. But, the d-excess increases gradually with altitude, and the higher d-excess values occur at mountain sampling sites which are attributed to the difference of the secondary evaporation between mountains and plain. Finally, the moisture source in the study area was investigated, and the results show relatively complex patterns: the westerly and polar air masses dominate in winter; however, there are inconsistent results in summer. Whether or not the westerly air mass is the dominant supply of moisture in summer is yet to be determined. Additionally, in the course of reviewing and integrating, some new research questions are identified for future work. |
| 收录类别 | SCI |
| WOS关键词 | TIBETAN PLATEAU ; DEUTERIUM EXCESS ; STABLE-ISOTOPE ; ATMOSPHERIC MOISTURE ; NORTHWEST CHINA ; HEIHE RIVER ; WATERS ; DELTA-O-18 ; ALTITUDE ; BASIN |
| WOS研究方向 | Geology |
| WOS类目 | Geosciences, Multidisciplinary |
| 语种 | 英语 |
| 出版者 | SPRINGER HEIDELBERG |
| WOS记录号 | WOS:000357101200007 |
| 内容类型 | 期刊论文 |
| URI标识 | http://www.corc.org.cn/handle/1471x/2557077 |
| 专题 | 寒区旱区环境与工程研究所 |
| 通讯作者 | Feng, Qi |
| 作者单位 | 1.Chinese Acad Sci, Cold & Arid Reg Environm & Engn Res Inst, Lanzhou 730000, Peoples R China 2.Alashan Desert Ecohydrol Expt Res Stn, Lanzhou 730000, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 4.Univ Melbourne, Sch Engn, Australia China Ctr Water Resources Res, Melbourne, Vic 3010, Australia |
| 推荐引用方式 GB/T 7714 | Guo, Xiaoyan,Feng, Qi,Wei, Yongping,et al. An overview of precipitation isotopes over the Extensive Hexi Region in NW China[J]. ARABIAN JOURNAL OF GEOSCIENCES,2015,8(7):4365-4378. |
| APA | Guo, Xiaoyan,Feng, Qi,Wei, Yongping,Li, Zongxing,&Liu, Wei.(2015).An overview of precipitation isotopes over the Extensive Hexi Region in NW China.ARABIAN JOURNAL OF GEOSCIENCES,8(7),4365-4378. |
| MLA | Guo, Xiaoyan,et al."An overview of precipitation isotopes over the Extensive Hexi Region in NW China".ARABIAN JOURNAL OF GEOSCIENCES 8.7(2015):4365-4378. |
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