HYDRODYNAMIC MODELLING BY UTILIZING GIS IN PARANAGUA BAY, PARANA, BRAZIL
Mauro Ribeiro Martins +
Mariane Alves Dal Santo ++
Juercio Tavares de Matos +++
Frederico Pereira Brandini ++++
+ Geologist - Laboratorio Associado deSensoriamento Remoto de
SantaCatarina - LARS/SC - Brazil - Comission IV
++ Geographer - Laboratorio Associado de Sensoriamento Remoto de Santa
Catarina - LARS/SC - Brazil - Comission IV
+++ Phd. Geosciense - Instituto Nacional de Fesquisas Espaciais - INPE
- Brazil - Comission IV
++++ Phd. Biosciense - Centro de Biologia Marinha - UFPR/CBM - Brazil
— Comission IV
Keywords - Coastal zone environment
The Paranagua bay estuary,
; spacial database ; GIS
Abstract
situated in Parana State, Southern Brazil,
has a great importance to the economy of region, its. waters being aim of
vast amount of works.
This
databasegeneration and manipulation
parameters statistical analysis
particled matter water transparency, salinity, primary productivity and
turbidity were achieved during field works in specific periods of the
sazonal cycle. The results analysis and evaluation are displayed belone
with the suggestion of a proposal for studing the water circulation pattern
in that zone.
INTRODUCTION
The geoprocessing techniques are
utilized worl dwi de by studing and
applicating in several knowledge vanguard
CDUEDALL, 1978; LANGRAN, 1989; NYERGES,
19895.
The estuaries, bays and laggons are
ideal places for testing and applicating
geographyc information systems, especially
Digital Terrain Model manipulation and
generation options CLATHROP and LILLESAND,
1989; LINDELL, et al. 1986; KHORRAM, 108Sa
and 1985b5. This is due to the
environmental dynamics and to space
variations along the tide seazonal cycle,
etc. Concerning to the water «quality, in
regions such those ones can be found the
largest gradients of temperature,
salinity, water color, and so.
The water masses circulation
researches may be achieved fastly an
exactness and visual understanding if the
geoprocessing techniques are used.
Those ecossystems are considered, due
to its natural characteristics, harmful
efects aims because the human occupation,
most of time planlessly. Because of the
marine transport and as the coastal plains
are ideal places for real state projects,
the lagoons estuaries are sensitive to
deep natural landscape alterations
CDIOGENES, 1990».
In Paranaguá Bay one may find the
grains larggest export harbor in Brazil
which flows the Brazilian Southern Region
goods and also the Paraguay ones.
42
paper utilizes georreferencial
techiniques as well as some physical
water mass. The variables suspending
The goal of this work is to study the
water mass circulation pattern by using
SIG, within a branch of the so called
state of Paraná's Coastal Zone bay complex
Paranaguá Bay CFig.125. These region covers
aproximately 400 km2 concerning to the
submerged zone, since the rivers estuary
up to the mixing with the sea water in
Galleta Channel.
THE STUDIED AREA GENERAL SITUATION
The studing area is located in the
latitudes 28°20°00° and 28° 35’00’ and
longitudes 48^? 20'00'' and 48° A45'00'*
situated in Brazil's Southern Regions. The
Paranaguá Lagoon-Estuarine Compl ex
encompasses about 585000 kmaÓ3, and includes
the associated drainage basins
CBIGARELLA,19783.
Physiographicly, the region may be
descibed as a water body projected into
the continent over SO km from the sea
beaches within a natural l andscape
designated as a coastal plan CBIGARELLA
op. cit.2. At its west side one can see
the Serra do Mar (Sea Hills» steep slope
1200 m high.
The natural sediment depositing of
the estuary by rivers makes dificult the
larger boats traffic. The slopes
occupation processes near by the rivers
accelerate the erosion and the consequent
sedimentation.
For solving the problem constant
dredging works are made along the ocean
access channel.
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