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DOI	10.1590/S1413-4152193499
	Analysis of drought frequency using clustering technique and probabilities functions
	Melo, Valneli da Silva; Salviano Sousa, Francisco de Assis
通讯作者	Melo, VD (corresponding author), Univ Fed Campina Grande, Campina Grande, Paraiba, Brazil.
来源期刊	ENGENHARIA SANITARIA E AMBIENTAL
ISSN	1413-4152
EISSN	1809-4457
出版年	2021
卷号	26 期号:1 页码:53-60
英文摘要	The objective of this work was to adjust probabilities density function to drought indexes: Severity and Duration in three sub-regions of Brazilian semi-arid (BSA). For that, were used data of total monthlies precipited of 320 rain stations for period from 1984 to 2014, kindly provided by the Agencia Nacional de Aguas (ANA). Were used the Run Method and total monthlies precipited for obtain the monthlies indexes that characterize the drought: Severity (mm) and Duration (months). We then used the Cluster Analysis technique to regionalize theses characteristic drought indexes. The following step was to adjust probabilities density functions to drought indexes: Severity and Duration in three sub-regions of in the Brazilian semi-arid (BSA). The Gamma bi-parametric, Generalized Extreme Value (GEV) and Logistics functions were better adjusted to the indices of drought Severity (mm) and the GEV, Weibull tri-parametric and bi-parametric models, were better adjusted to drought indices Duration, to the homogeneous sub-regions 1, 2 and 3, respectively.
英文关键词	drought duration drought severity climatology of Brazilian semi-arid
类型	Article
语种	葡萄牙语
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:000630028100004
WOS关键词	IMPACTS
WOS类目	Water Resources
WOS研究方向	Water Resources
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/367780
作者单位	[Melo, Valneli da Silva; Salviano Sousa, Francisco de Assis] Univ Fed Campina Grande, Campina Grande, Paraiba, Brazil
推荐引用方式 GB/T 7714	Melo, Valneli da Silva,Salviano Sousa, Francisco de Assis. Analysis of drought frequency using clustering technique and probabilities functions[J],2021,26(1):53-60.
APA	Melo, Valneli da Silva,&Salviano Sousa, Francisco de Assis.(2021).Analysis of drought frequency using clustering technique and probabilities functions.ENGENHARIA SANITARIA E AMBIENTAL,26(1),53-60.
MLA	Melo, Valneli da Silva,et al."Analysis of drought frequency using clustering technique and probabilities functions".ENGENHARIA SANITARIA E AMBIENTAL 26.1(2021):53-60.