Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.3390/w10020112 |
Spatial and Temporal Analysis of Rainfall Concentration Using the Gini Index and PCI | |
Sanguesa, Claudia1; Pizarro, Roberto1; Ibanez, Alfredo1; Pino, Juan1; Rivera, Diego2; Garcia-Chevesich, Pablo3,4,5,6,7; Ingram, Ben8 | |
通讯作者 | Garcia-Chevesich, Pablo |
来源期刊 | WATER |
ISSN | 2073-4441 |
出版年 | 2018 |
卷号 | 10期号:2 |
英文摘要 | This study aims to determine if there is variation in precipitation concentrations in Chile. We analyzed daily and monthly records from 89 pluviometric stations in the period 1970-2016 and distributed between 29 degrees 120’ S and 39 degrees 30’ S. This area was divided into two climatic zones: arid-semiarid and humid-subhumid. For each station, the Gini coefficient or Gini Index (GI), the precipitation concentration index (PCI), and the maximum annual precipitation intensity in a 24-h duration were calculated. These series of annual values were analyzed with the Mann-Kendall test with 5% error. Overall, it was noted that positive trends in the GI are present in both areas, although most were not found to be significant. In the case of PCI, the presence of positive trends is only present in the arid-semiarid zone; in the humid-subhumid zone, negative trends were mostly observed, although none of them were significant. Although no significant changes in all indices are evident, the particular case of the GI in the humid-subhumid zone stands out, where mostly positive trends were found (91.1%), of which 35.6% were significant. This would indicate that precipitation is more likely to be concentrated on a daily scale. |
英文关键词 | precipitation concentration rainfall Gini Index precipitation trends trends of monthly and daily precipitation 24 h maximum intensity |
类型 | Article |
语种 | 英语 |
国家 | Chile ; USA ; Uruguay ; England |
收录类别 | SCI-E |
WOS记录号 | WOS:000426775500022 |
WOS关键词 | DAILY PRECIPITATION CONCENTRATION ; RIVER-BASIN ; WORLD MAP ; CHILE ; TRENDS |
WOS类目 | Water Resources |
WOS研究方向 | 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/2XILL650/213574 |
作者单位 | 1.Univ Talca, Technol Ctr Environm Hydrol, Talca 3462227, Chile; 2.Univ Concepcion, Dept Water Resources, Chillan 3812120, Chile; 3.Univ Chile, Fac Forest Sci & Nat Conservancy, Santiago 8820808, Chile; 4.Univ Arizona, Dept Hydrol & Atmospher Sci, Tucson, AZ 85721 USA; 5.Univ Arizona, Dept Agr & Biosyst Engn, Tucson, AZ 85721 USA; 6.UNESCO, Int Hydrol Programme & Int Sediment Initiat, Montevideo 1100, Uruguay; 7.UNESCO, Int Hydrol Programme & Int Sediment Initiat, Montevideo 1200, Uruguay; 8.Cranfield Univ, Sch Water Energy & Environm, Coll Rd, Cranfield MK43 0AL, Beds, England |
推荐引用方式 GB/T 7714 | Sanguesa, Claudia,Pizarro, Roberto,Ibanez, Alfredo,et al. Spatial and Temporal Analysis of Rainfall Concentration Using the Gini Index and PCI[J]. University of Arizona,2018,10(2). |
APA | Sanguesa, Claudia.,Pizarro, Roberto.,Ibanez, Alfredo.,Pino, Juan.,Rivera, Diego.,...&Ingram, Ben.(2018).Spatial and Temporal Analysis of Rainfall Concentration Using the Gini Index and PCI.WATER,10(2). |
MLA | Sanguesa, Claudia,et al."Spatial and Temporal Analysis of Rainfall Concentration Using the Gini Index and PCI".WATER 10.2(2018). |
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