Temporal Trend and Estimation of the Hydrological Risk of Maximum Rainfall and Flow Extremes in the City of Rio Branco, Acre, Brazil

Author:

Oliveira Adriana Valente de1ORCID,Serrano Rodrigo Otávio Peréa1ORCID,Mesquita Anderson Azevedo1ORCID,Moreira José Genivaldo do Vale1ORCID

Affiliation:

1. Universidade Federal do Acre, Brazil

Abstract

Abstract Extreme hydrological events have gained notoriety in recent decades, thus recommended elements of decision-making assistance are important. In this context, this study focused on analyzing the temporal behavior of the maximum rainfall and waterflow recorded in the city of Rio Branco, Acre (Brazil), in addition to analyzing their frequencies, highlighting the reference quantiles and their reported probabilities of recurrence. The results pointed to a linearly upward trend, both for flow and rainfall, but these differences were not statistically significant according to the Mann-Kendall and Spearman Rho tests (α = 5%), leading to the conclusion for the occurrence of changes in hydrological patterns in Rio Branco, although statistically non-significant. However, it is warned to the precocity of attributing the main cause of such changes to either anthropic or natural actions. Regarding frequency analysis, it was found that Gumbel distribution is proper to the adjustment of the studied data, thus, it is possible to determine the lifetime associated with hydrological risk and the useful lifespan of a project aiming at planning actions in the face of the impacts of extreme events, especially in a scenario of severe floods.

Publisher

FapUNIFESP (SciELO)

Subject

Atmospheric Science

Reference36 articles.

1. Vulnerabilidades em manchas urbanas ao longo das margens fluviais do Capibaribe - Pernambuco/Brasil;ARAGãO J.P.G.V.;Sociedade & Natureza,2019

2. Tendência climática de aumento de temperatura mínima e da pressão de saturação do vapor d’água na Amazônia Ocidental;DELGADO R.C.;Enciclopédia Biosfera,2012

3. Tendência da precipitação e seu aproveitamento para fins não potáveis na Amazônia Ocidental, Acre;DELGADO R.C.;Nativa,2014

4. Return period and risk analysis of nonstationary low-flow series under climate change;DU T.;Journal of Hydrology,2015

5. Variabilidade e tendência das chuvas em Rio Branco, Acre, Brasil;DUARTE A.F.;Revista Brasileira de Meteorologia,2005

Cited by 4 articles. 订阅此论文施引文献 订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献

同舟云学术

1.学者识别学者识别

2.学术分析学术分析

3.人才评估人才评估

"同舟云学术"是以全球学者为主线,采集、加工和组织学术论文而形成的新型学术文献查询和分析系统,可以对全球学者进行文献检索和人才价值评估。用户可以通过关注某些学科领域的顶尖人物而持续追踪该领域的学科进展和研究前沿。经过近期的数据扩容,当前同舟云学术共收录了国内外主流学术期刊6万余种,收集的期刊论文及会议论文总量共计约1.5亿篇,并以每天添加12000余篇中外论文的速度递增。我们也可以为用户提供个性化、定制化的学者数据。欢迎来电咨询!咨询电话:010-8811{复制后删除}0370

www.globalauthorid.com

TOP

Copyright © 2019-2024 北京同舟云网络信息技术有限公司
京公网安备11010802033243号  京ICP备18003416号-3