Academic Journal
Erosividade da chuva em Rondon do Pará, PA, Brasil de 1999 a 2015 e projetada para 2035 ; Rainfall erosivity in Rondon do Pará, PA, Brazil from 1999 to 2015 and projected to 2035
| العنوان: | Erosividade da chuva em Rondon do Pará, PA, Brasil de 1999 a 2015 e projetada para 2035 ; Rainfall erosivity in Rondon do Pará, PA, Brazil from 1999 to 2015 and projected to 2035 |
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| المؤلفون: | ROSA, Amanda Gama, SOUSA, Adriano Marlisom Leão de, COSTA, Jamer Andrade da, SOUZA, Everaldo Barreiros de |
| بيانات النشر: | Universidade Federal do Pará Brasil UFPA |
| سنة النشر: | 2017 |
| المجموعة: | Universidade Federal do Pará: Repositório Institucional da UFPA |
| مصطلحات موضوعية: | Erosão dos solos, Chuvas, Precipitação (Meteorologia), Desastre natural, Clima, Rondon do Pará - PA |
| الوصف: | This study determined the rainfall erosivity value for the urban area of Rondon do Pará in order to provide information about the city's soil loss. The study also determined the probability of erosion occurrence and the return period projected for the next 20 years. The annual distribution of the erosivity index was analyzed and an estimate was made of the correlation between the average monthly erosivity index and the rainfall coefficient. To accomplish this, two types of rainfall data were obtained: 1) data observed by the CMORPH satellites from 1999 to 2015; and 2) data modelled by the RegCM4 model from 2016 to 2035. Erosivity was calculated based upon these monthly and annual rainfall data. Frequency distributions of erosivity values and their return periods were calculated and probability curves were plotted. Regression analyses between precipitation and erosivity were completed. In the period from 1999 to 2015, the value of the R factor of Rondon do Pará was 16,390 MJ mm ha-1h-1ano-1, with a probability of 47% of being equaled or exceeded at least once each 2.1 years. In the period from 2016 to 2015, the R value was 13,038 MJ mm ha-1h-1year-1. Highest soil losses are probable between February and January from 1999 to 2015 and between January and April from 2016 to 2035. The regression mathematical models that had the best results were the potency and the polynomial models for the years from 1999 to 2015 and 2016 to 2035, respectively. ; Visando contribuir com informações acerca das perdas de solo em Rondon do Pará, este trabalho determinou o valor de erosividade da chuva para a área urbana deste município, sua probabilidade de ocorrência e de seu período de retorno projetados para os próximos 20 anos. Foram realizadas análises da distribuição anual do índice de erosividade e verificadas as correlações entre o índice de erosividade médio mensal com o coeficiente de chuva. Para isto, obtiveram-se dois tipos de dados de precipitação: 1) observados, dos satélites CMORPH, de 1999 a 2015; e 2) por modelagem, ... |
| نوع الوثيقة: | article in journal/newspaper |
| وصف الملف: | application/pdf |
| اللغة: | Portuguese |
| تدمد: | 1980-993X |
| Relation: | Revista Ambiente & Água; ROSA, Amanda Gama et al. Erosividade da chuva em Rondon do Pará, PA, Brasil de 1999 a 2015 e projetada para 2035. Revista Ambiente & Água, Taubaté, v. 11, n. 4, p. 1006-1021, dez. 2016. Disponível em: . Acesso em: 10 fev. 2017. .; http://repositorio.ufpa.br/jspui/handle/2011/7645 |
| الاتاحة: | http://repositorio.ufpa.br/jspui/handle/2011/7645 |
| Rights: | Acesso Aberto |
| رقم الانضمام: | edsbas.87AA9DDA |
| قاعدة البيانات: | BASE |
Full Text Finder | تدمد: | 1980993X |
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