Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.24850/j-tyca-2017-06-02 |
Annual and monthly runoff analysis in the Elqui River, Chile, a semi-arid snow-glacier fed basin | |
Balocchi, Francisco1,2,3; Pizarro, Roberto3; Meixner, Thomas1; Urbina, Fernando4 | |
通讯作者 | Pizarro, Roberto |
来源期刊 | TECNOLOGIA Y CIENCIAS DEL AGUA |
ISSN | 0187-8336 |
EISSN | 2007-2422 |
出版年 | 2017 |
卷号 | 8期号:6页码:23-35 |
英文摘要 | Climate change and its relationship to temperature are critical factors affecting glaciers, especially when populations depend on these ice reservoirs. The use of the precipitation-runoff coefficient in semi-arid, mountainous regions that are fed by glaciers can lead to important findings about how glacial melt responds to climate change. This study analyzed 40 years of monthly and annual precipitation and runoff data (1970-2009) from four sub-basins of the Elqui River (29 degrees 27’ - 30 degrees 34’ S and 71 degrees 22’ - 69 degrees 52’ W), in the Coquimbo region of Chile. The Elqui basin has a rain-snow-glacial melt regime. The areal average rainfall was estimated using the Thiessen polygon method. Gumbel and Goodrich probability distribution functions and the Log-Normal Probability Density Function (PDF) were used to understand the temporal behavior of precipitation and streamflow. The data-time behavior and PP Q(-1) coefficients were also analyzed. And the Mann-Kendall (MK) test was used to compare the results. No trends were found for flow, while a negative trend in rainfall was identified. The summer flows were notable, which remained constant. In spite of the differences between the PP Q(-1) coefficient and the MK test, the flow clearly does not come from rainfall but rather from glacial melt. |
英文关键词 | Glacial melt Mann-Kendall precipitation and flow coefficient glacier-fed basin Gumbel distribution rainfall and flow trend |
类型 | Article |
语种 | 英语 |
国家 | USA ; Chile |
收录类别 | SCI-E |
WOS记录号 | WOS:000419286600002 |
WOS关键词 | EQUILIBRIUM-LINE ALTITUDE ; REMOTE-SENSING DATA ; SEA-LEVEL RISE ; CLIMATE-CHANGE ; HYDROLOGICAL RESPONSE ; STREAMFLOW TRENDS ; WATER-RESOURCES ; DRY ANDES ; FLOW ; FORELAND |
WOS类目 | Engineering, Civil ; Water Resources |
WOS研究方向 | Engineering ; Water Resources |
来源机构 | University of Arizona |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/202655 |
作者单位 | 1.Univ Arizona, Dept Hydrol & Water Resources, 1133 E James E Rogers Way 228, Tucson, AZ 85721 USA; 2.Inst Forestal, Av Sucre 2397, Santiago 7770223, Chile; 3.Univ Talca, Ctr Tecnol Hidrol Ambiental, Av Lircay S-N, Talca 3460000, Chile; 4.Direcc Gen Aguas, Unidad Hidrol, Tarapaca 130,1er piso, Iquique 1100597, Chile |
推荐引用方式 GB/T 7714 | Balocchi, Francisco,Pizarro, Roberto,Meixner, Thomas,et al. Annual and monthly runoff analysis in the Elqui River, Chile, a semi-arid snow-glacier fed basin[J]. University of Arizona,2017,8(6):23-35. |
APA | Balocchi, Francisco,Pizarro, Roberto,Meixner, Thomas,&Urbina, Fernando.(2017).Annual and monthly runoff analysis in the Elqui River, Chile, a semi-arid snow-glacier fed basin.TECNOLOGIA Y CIENCIAS DEL AGUA,8(6),23-35. |
MLA | Balocchi, Francisco,et al."Annual and monthly runoff analysis in the Elqui River, Chile, a semi-arid snow-glacier fed basin".TECNOLOGIA Y CIENCIAS DEL AGUA 8.6(2017):23-35. |
条目包含的文件 | 条目无相关文件。 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。