Thursday, February 06, 2020

Na tarde que se avizinha e outros poemas, de Marcos Freitas





FREITAS, Marcos. Na tarde que se avizinha e outros poemas.  Columbus, S/USA:  Kindle Amazon.com, 2019.  s.p.  Capa:Marcos Airton de Sousa Freitas. Prefácio: Antonio  Miranda.  ISBN 978-170236472-20     Ex. bibl. Antonio Miranda


QUIMERA

 
             I
longe
de mim?
pois sim.

             II
o dia amanheceu
o sol subindo
eu dormindo

             III
empresto ao regato
meu corpo sujo
de verde lama

             IV
te traço
sem o menor
embaraço

             V
te descrevo
às claras
ou em segredo

             VI  
se amor
não era
o que me espera?

             VII
será pólvora
ou festim?
diz para mim

             VIII
vida
de cão?
pois não.

http://www.antoniomiranda.com.br/poesia_brasis/distrito_federal/marcos_freitas.html

Monday, December 30, 2019

Hydrological Drought Assessment: The Use of the ARRF Model for Monthly Streamflow Generation on Intermittent Rivers of the Northeast Brazil



Hydrological Drought Assessment: The Use of the ARRF Model for Monthly Streamflow Generation on Intermittent Rivers of the Northeast Brazil

Marcos Airton de Sousa Freitas1, Gabriel Belmino Freitas2
1(Senior Water Resources Specialist with National Water Agency)
2(Department of Economy, University of Brasília - UnB)
Corresponding Author: National Water Agency – Adress code: 70.610-200; masfreitas@ana.gov.br


ABSTRACT:  This paper presents the ARR model (Alternating Renewal Reward) for generating annual streamflow, coupled with the Fragment model to disaggregate the annual streamflow to monthly ones. This new coupled model, namely ARRF model, has been applied to three typical intermittent basins in the State of Ceará - Brazil. In order to better understand the phenomenology of the processes involved in modeling, several statistical tests were applied to flood and drought events of the typical hydrological streamflow series of this region. The ARRF model was able to preserve the analyzed statistical parameters of the historical streamflow series, as well as to reproduce the persistence (long periods of low and high flow, i.e. drought and flood periods) encountered in the historical flow series, which are fundamental for hydrological drought assessment and for the design and operation optimization of multi-purpose reservoirs system.
KEYWORDS:  Streamflow Generation and Simulation, Semiarid Regions, Reservoir Operation Optimization

Artigo completo:

Received 10 Dec2019; Accepted21 Dec., 2019© The author(s) 2019. Published with open access at www.questjournals.org
Quest JournalsJournal of Research in Environmental and Earth SciencesVolume 5~ Issue 2(2019) pp: 29-37ISSN(Online): 2348-2532

Wednesday, December 04, 2019

Poema "suspiro", de Marcos Freitas




suspiro

clarividente, mostro os dentes.
é assim que se
atesta a qualidade dos cavalos.

ao primeiro relâmpago
seguro o medo e
aguardo o miraculoso estrondo do trovão.

sorrateiro, murmuro sombras
diante da página branca:
espelho vazio de mim.

o agora longevo frio inverno e
de céu azul, em breve explodirá
em flores brancas de cagaitas e ipês.

inocente, irei torcer
pelo fim do desmonte
da nossa frágil democracia.

marcos freitas.