EXTREME EVENTS AND FLOOD RISK: AN ANALYSIS OF THE EVOLUTIONARY PROCEEDING OF EASTERLY WAVES DISTURBS IN JUNE 2010 ON THE WATERSHED OF UNA RIVER - PERNAMBUCO

Authors

  • Keyla Manuela Alencar da Silva Alves Universidade Federal de Pernambuco
  • Lucas Costa de Souza Cavalcanti Universidade Federal de Pernambuco
  • Ranyére Silva Nóbrega Universidade Federal de Pernambuco

DOI:

https://doi.org/10.9771/1984-5537geo.v9i2.6628

Keywords:

Natural Hazards, Flood, Easterly waves disturbance, Northeast Brazil

Abstract

The easterly waves (DOL’s) are disorders of the trade winds, which, in northeastern Brazil, usually are associated with extreme precipitation events. This paper examines the evolutionary pattern of a DOL that hit the state of Pernambuco in June 2010, causing flooding and severe economic losses humans. The clipping chosen for analysis was the Una river basin, which had 11 affected municipalities. The analysis of the event based on the interpretation of images GOES-12 and TRMM. It was found that the analysis of GOES-12 images isolated not produce an effective, however, when combined with more information, come to a concise answer and extremely important for studies related to climate events. To evaluate the vulnerability to flooding of several municipal seats Una river basin, used a kernel density estimator based on the magnitude values of the drainage network. The results indicated that even naturally less vulnerable areas can be seriously affected by the amount precipitated.

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Author Biographies

Keyla Manuela Alencar da Silva Alves, Universidade Federal de Pernambuco

Programa de Pós-graduação em Geografia, Universidade Federal de Pernambuco - UFPE.

Lucas Costa de Souza Cavalcanti, Universidade Federal de Pernambuco

Programa de Pós-graduação em Geografia, Universidade Federal de Pernambuco - UFPE.

Ranyére Silva Nóbrega, Universidade Federal de Pernambuco

Programa de Pós-graduação em Geografia, Universidade Federal de Pernambuco - UFPE.

Published

2013-12-23

How to Cite

Alves, K. M. A. da S., Cavalcanti, L. C. de S., & Nóbrega, R. S. (2013). EXTREME EVENTS AND FLOOD RISK: AN ANALYSIS OF THE EVOLUTIONARY PROCEEDING OF EASTERLY WAVES DISTURBS IN JUNE 2010 ON THE WATERSHED OF UNA RIVER - PERNAMBUCO. GeoTextos, 9(2). https://doi.org/10.9771/1984-5537geo.v9i2.6628

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Artigos