PRECIPITATION THRESHOLD WITH POTENTIAL TO GENERATE LANDSLIDES AT RISK COMPLEXES IN AN URBAN ZONE
Keywords:
Desastres naturais, áreas de risco, deslizamentos de terra, limiar de precipitaçãoAbstract
Natural disasters of landslides and flooding are events that can cause major disasters, leading to high socioeconomic and environmental impacts worldwide. In Brazil, in states such as Rio de Janeiro, sirens for warning alerts are triggered every year, warning the population about the possibility of events of landslides, flushes, floods, caused by heavy rains. Landslide events are usually a consequence of heavy rainfall, regardless of where they occur. The objective of this work was to establish rainfall thresholds for the risk areas of Maceió by assessing recorded occurrences of landslides and recorded rainfall. The municipality of Maceió is the most populous in the state of Alagoas and has about 575 risk areas, divided into risk complexes. The Civil Defense of this municipality records the occurrences of landslides caused by several factors, including heavy rains. It was shown in this paper that a general rule for threshold determination cannot be applied due to the particular characteristics of each risk zone. The suggested thresholds for the city of Maceió were 40 mm for daily rainfall, with minimum durations less than or equal to 5 h, and the cumulative 100 mm in 2 rainy days.
Downloads
Published
Issue
Section
License
Copyright (c) 2019 Revista de Gestão de Água da América Latina (Water Management Journal in Latin America)
This work is licensed under a Creative Commons Attribution 4.0 International License.
When sending the manuscript, notice that:
To be responsible for the other authors, when applicable, as co-responsible for the technical and scientific content of the article according to Article 5 of Brazilian Law N. 9610, regarding Copyright.
All statements published in the manuscript are the sole responsibility of the authors. However, all published material becomes the property of REGA, which reserves the copyright. Therefore, no material published in REGA may be reproduced without the written permission of REGA. All authors of articles submitted to REGA must sign a Copyright Transfer Agreement, which will take effect from the date of acceptance of the article. This term will be requested by REGA prior to the publication of the article. The author responsible for the article will receive, free of charge, the electronic record of the publication (in PDF format).
All articles published open access will be immediately and permanently free for everyone to read, download, copy and distribute. Permitted reuse is defined by your choice of one of the following user licenses:
Creative Commons Attribution (CC BY): lets others distribute and copy the article, to create extracts, abstracts, and other revised versions, adaptations or derivative works of or from an article (such as a translation), to include in a collective work (such as an anthology), to text or data mine the article, even for commercial purposes, as long as they credit the author(s), do not represent the author as endorsing their adaptation of the article, and do not modify the article in such a way as to damage the author’s honor or reputation.
Author Rights
For open access publishing this journal uses an exclusive licensing agreement. Authors will retain copyright alongside scholarly usage rights and REGA will be granted publishing and distribution rights.
Author Self-Archiving Policy
This journal permits and encourages authors to post items submitted to the journal on personal websites and institutional or funder repositories after publication. The final published PDF version should be used and bibliographic details that credit the publication in this journal should be included.
