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Search Results: 1 - 10 of 43653 matches for " Marcelo dos Santos Targa "
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Reflections on the prospects for evaluation and qualified production of graduate programs in Environmental Sciences
Marcelo dos Santos Targa
Ambiente e água : An Interdisciplinary Journal of Applied Science , 2012,
Abstract: In this editorial, we reflect on the evaluation criteria that is under discussion to be adopted for the assessment of CAPES (Brazilian Federal Agency for the Support and Evaluation of Graduate Education) Environmental Sciences area – CACiamb. This criteria aims to increase qualified production by simulating CAPES quality strata A1, A2, B1 and B2 production of Academic Master Degree Programs with 12 permanent professors based on the criteria established by the Interdisciplinary Area Committee – CAInter in 2007. As well as expectations for the adoption of periodic assessment of free access bases, along with fostering the use of scientific journals published online by Graduate Programs.
Study of human occupation impacts in the Batedor river basin in the Mantiqueira mountain in the municipality of Cruzeiro, SP, Brazil
Rubens Torres Curvello,Getulio Teixeira Batista,Marcelo dos Santos Targa
Ambiente e água : An Interdisciplinary Journal of Applied Science , 2008,
Abstract: The study of hydrographic basins as territorial units integrating the management of hydric resources is essential to guarantee sustainable use of natural resources in these basins. The establishment of the Paraíba do Sul hydrographic basins committee, in 1994, determined the need for management planning information and integration actions in the Paraíba do Sul basin which incorporates a variety of industries and intense land use. The Batedor river, in the municipality of Cruzeiro, SP, flows into the Passa Vinte which is an affluent of Paraíba do Sul river. Its mouth is located at 22°31’0.63”S and 45°01’2.07”W. Its farthest water contributing source lies about 8.5 km, near the Itaguaré peak 2,308 m high, in the Mantiqueira mountain on the border of S o Paulo and Minas Gerais States. To characterize land use in the Batedor hydrographic basin, Landsat imagery and topographic charts were analyzed based on remote sensing and geoprocessing techniques. This paper describes the study of impacts related to land and water resources use in the Batedor river basin and the generation of support material for environmental education. Results has shown that this basin has good water supply, has no flooding risk and has several springs running down the Mantiqueira Moutain slopes that form young creeks with few meanders. Irregular human occupation for housing and subsistence agriculture, mainly banana plantations can be seen in deep slopes and riparian areas, as well as degraded pastures that indicate inappropriate land use and no conformance to pertinent legislation. The decrease in forest vegetation cover can cause severe erosion with significant soil loss and sediment deposition in the river, thus reducing water quality and regulated quantity. This basin is currently responsible for 70% of the water supply for the city of Cruzeiro, SP.
Morphometric analysis of sub-basins Fojo and Perdizes in the city of Campos do Jord o, SP, Brazil
Agenor Micaeli dos Santos,Marcelo dos Santos Targa,Getulio Teixeira Batista,Nelson Wellausen Dias
Ambiente e água : An Interdisciplinary Journal of Applied Science , 2012,
Abstract: The State of S o Paulo Water Resources Policy established, in 1991, the Integrated Water Resources Management System (SIGRHI) and defined the basic principles for water management, adopting the watershed as the basic unit for studies, integrated planning for sustainable development. This study characterized the morphology of sub-basins Fojo and Perdizes in the city of Campos do Jord o, SP. Morphometric analysis involved the characterization of geometric parameters, topography and drainage network, and the analysis of land use and land cover of the sub-basins. The morphometric characterization revealed that Perdizes sub-basin has an area of 12.70 km2, a perimeter of 19.85 km, and a main channel length of 6.86 km, while Fojo sub-basin has a drainage area of 13.97 km 2, a perimeter of 19.74 km, and a main channel length of 6.94 km. These results indicate similarities between the two sub-basins. The compactness coefficient (Kc) for Perdizes was 1.56 and for Fojo 1.41. These values associated with the respective form factors, F = 0.27 and F = 0.29, indicate that these sub-basins, under a normal precipitation regime are not susceptible to flooding. The results of these indices are consisted with the circularity index (CI) found: CI = 0.41 for Perdizes and CI = 0.45 for Fojo, respectively. As CI values found are far from one, they indicate that these sub-basins tend to have a more elongated shape and, therefore, lower flow concentration tendency. The results obtained for the maintenance coefficient indicate that in order to maintain the flow of each channel meter, Perdizes sub-basin needs 286.5 m2 and Fojo sub-basin needs 243.9 m2. Land cover and land use analysis revealed that among the four existing vegetation cover types, Forest is dominant in both sub-basins with 649 ha (51.1%) in Perdizes, and 608.8 ha (43.6%) in Fojo; Reforestation cover ranks second with similar areas in both sub-basins, Perdizes with 218 ha (17.2%) and Fojo with approximately 214 ha (15.3%). In terms of conservation, Fojo sub-basin can be considered better conserved with a smaller urban area, larger rangeland natural coverage area, and only slightly smaller forest coverage area than Perdizes.
Compensatory forestation for soil water retention in watersheds of Campos do Jord o municipality, SP, Brazil
Agenor Micaeli dos Santos,Marcelo dos Santos Targa,Getulio Teixeira Batista,Nelson Wellausen Dias
Ambiente e água : An Interdisciplinary Journal of Applied Science , 2011,
Abstract: Compensatory forestation is an important technique to estimate the necessary forest cover for compensating the water loss due to surface runoff within a watershed and, therefore, guiding forest recovery interventions. The objective of this study was to quantify the forest area needed to compensate water loss caused by surface runoff in Fojo Creek and Perdizes Creek basin areas in the municipality of Campos do Jord o, SP, Brazil. Estimates were based on the Compensatory Forestation Methodology for Retention of Rainwater in Small Watersheds, which takes into consideration the average total annual precipitation, land cover and land use, the water infiltration capacity of soil, and an international recommendation indicating that 20.55% of the water in the hydrological cycle should infiltrate into the soil. These two watersheds have a total area of 2,666.6 ha that account for 9.3% of the municipal area of Campos do Jord o. The main land use and land covers in this area are: 1,257.9 ha of forest, 434.4 ha of urban area, 432.5 ha of commercial forest plantation, 265.1 ha of highland prairies, 126.8 ha of pastureland, and 149.9 ha of other classes. Water infiltration rate field experiment estimated a high rate (298 mmh-1) in forested areas, 289 mmh-1 in areas covered by commercial plantation, 94 mmh-1 in highland prairies, and 63 mmh-1in pasturelands. Based on the 20.55% infiltration recommendation of precipitated water, it was estimated that the total forest area required for these two watersheds to compensate for the runoff caused by the other land cover classes (prairies, pasture lands, reforestation plantations and urban areas) should be 1,318.1 ha (51,8%). Therefore, an additional 60.2 ha of recovered forest is needed to compensate for the loss of 1,096 million m3/year of water lost in theses watersheds.
Influência das cavas de extra??o de areia no balan?o hídrico do vale do Paraíba do Sul
Reis, Benedito Jorge dos;Batista, Getulio Teixeira;Targa, Marcelo dos Santos;Catelani, Celso de Souza;
Rem: Revista Escola de Minas , 2006, DOI: 10.1590/S0370-44672006000400007
Abstract: the extraction of sand in the valley of the paraíba do sul river, carried out in a vulnerable environment, is responsible for significant environmental impacts. this work had the objective of investigating the increase of the total area of lakes created in the mining process for a period of 11 years and of verifying the influence of the evaporation from these lakes on the regional water balance. thus, a geographic information system data basis was implemented using the gis software package, spring, and landsat imagery. scenes 218/76 and 219/76 were used for the quantification of the mining areas and for the assessment of the evolution of the activity in the area for a period of 11 years. with data from a local climatological station (unitau/inmet-83784) integrated into the database and with the total area of artificial lakes resultant from sand mining activity, it was possible to estimate the increase of the evaporation rate due to this activity. an increase of 591 ha, in 1993 to 1,726 ha in 2003 in the area of lakes was observed. the resulting increase in the evaporating rate was 203% with 19,157,022 m3 evaporated in 2003 correspondent to the consumption of a city with more than 326,000 inhabitants, considering the average consumption for the state of s?o paulo which is greater than the brazilian average.
Urbanization and runoff in the Tucunduba hydrographic basin, Belém, PA, Brazil
Marcelo dos Santos Targa,Getulio Teixeira Batista,Hélio Nóbile Diniz,Nelson Wellausen Dias
Ambiente e água : An Interdisciplinary Journal of Applied Science , 2012,
Abstract: The present work investigated the runoff resulting from urban sprawl in the area of Tucunduba basin, in Belem, in the period between 1972 and 2006, which is characterized by a urbanization process started in the 1960s by low income population without adequate infrastructure services. Urbanization modifies the soil surface interfering on the ground phase of the hydrological cycle, inasmuch as it reduces the area of infiltration, increases runoff, and the runoff coefficient. A geographic database with land use and land cover map layers extracted from orthophotos acquired in 1972, 1977, and 1998 and a SPOT satellite image acquired in 2006 were used. Digital maps and analysis of the urbanization processes were supported by tools available in ArcGIS software package. To estimate the infiltration potential (S) and effective rainfall (Pe), as a function of rainfall duration equal to the maximum time of concentration of the water in the basin, Curve Number methodology proposed by the Natural Resources Conservation Service (NRCS) was applied. Rainfall estimates were calculated using the maximum rain equation for the city of Belém, with return times specified at 2, 5, 10, 15, 20, 25, 50, 100, and 200 years. The results showed an increase in areas of high and medium population density (urban) and reduced area of low population density (secondary forest growth) for the years of 1972, 1977, 1998, and 2006, that generated a higher effective precipitation value and, therefore, a higher effective runoff coefficient value (C).
Hydrogeologic monitoring of the Paraíba do Sul river floodplain area subject to sand mining in the Tremembé municipality, SP, Brazil
Hélio Nobile Diniz,Márcia Helena Galina,Marcelo dos Santos Targa,Getulio Teixeira Batista
Ambiente e água : An Interdisciplinary Journal of Applied Science , 2011,
Abstract: To characterize the geological, hydrogeological, hydrochemical, and hydrobacterial aspects of the surface and groundwater in the floodplain of the Paraíba do Sul river in Tremembé municipality, the water levels of the Quaternary sedimentary aquifer experimental site was monitored based on four wells and eight associated piezometers with daily measures of water levels in continuous operation since December 3, 2009. In addition, data from a modular weather station in operation since March 2010 and data from the quality of surface water and groundwater have been analyzed in the period between March 2010 and March 2011. The water balance between April 2010 and March 2011 was estimated to verify the periods of water deficiency and excess. Data loggers installed in the piezometers enabled daily groundwater levels monitoring to establish the influence of the Paraíba do Sul river in the water levels of the Quaternary sedimentary aquifer and also they allowed the determination of the water loss to the atmosphere. A hydrogeological model with simplified equations, based on hydraulics parameters obtained in the wells pump tests, was implemented to calculate the amount of daily evapotranspiration and the average distance of the water loss from the wells to the atmosphere. An evaporation rate of 83.4 m3/h from the open-pit sand mine located at 212.2 m and of 89.2 m3/h for the one at 885.0 m average distance from the monitoring wells were observed. Chemical and bacteriological analysis involving multiple parameters were performed in the period from March 2010 to March 2011 in groundwater collected in wells, in the open-pit mines and in the waters of the Paraíba do Sul river. The results allowed to observe the influences of the Paraíba do Sul river as well as the contamination from fertilizers and pesticides from the agriculture practiced in the floodplain area on the quality of the groundwater.
Determination of priority areas for the re-establishment of forest cover, based on the use of geotechnologies
Celso de Souza Catelani,Getulio Teixeira Batista,Marcelo dos Santos Targa,Nelson Wellausen Dias
Ambiente e água : An Interdisciplinary Journal of Applied Science , 2012,
Abstract: The determination of priority areas for the re-establishment of forest cover in watersheds is directly associated to the probability of effective success of restoration processes. However, considering the complexity of the analysis and the large amount of spatial data necessary to accomplish that purpose, state of the art technological tools capable of processing multi-criteria analysis to support decision making are necessary. Thus, the current work developed for an area of 476 km2 corresponding to the Una river watershed in the municipal district of Taubaté, SP, used a multi-criteria analysis based on the continuous classification and on Analytical Hierarchy Process (AHP) paired comparisons techniques, available in the complete GIS package named SPRING (Georeferenced Information Processing System) for generating a map of priority areas for the re-establishment of forest cover in that watershed. Results revealed a large area (26.6% of the entire watershed) falling in the “Extreme Priority” class for forest cover re-establishment, what indicates the urgent need of environmental recovery of this basin considering that it is used for Taubaté city water supply. Results from this research support the decision making for resource optimization applied to priority areas in an operational way.
Hydrogeological characteristics of the Paraíba do Sul river flood plains: a case study of a mining area in the Tremembé municipality, SP, Brazil
Hélio Nobile Diniz,Márcia Helena Galina,Getulio Teixeira Batista,Marcelo dos Santos Targa
Ambiente e água : An Interdisciplinary Journal of Applied Science , 2010,
Abstract: The sand mining activity in the S o Paulo part of the Paraíba do Sul River Valley started in the 1950s, in the area of Jacareí municipality, located in the Southwestern part of the basin. From there, it advanced by the neighboring municipalities, fostered by urbanization and industrialization processes, especially of S o Paulo Metropolitan Region. The lack of detailed hydrogeological studies in this area motivated this study that had the objective of verifying the hypothesis that sand mining pits interfere on the quality and storage of the water in the quaternary sedimentary aquifer. This study focused specifically in the eastern part of the Tremembé Municipality, S o Paulo State, in a mining place called “Minera o Paraíso”. The investigation involved infiltration and flow tests, laboratory analyses of soil physical parameters and estimation, water quality indices and infrastructure construction for equipment installation including piezometers, dynamic penetration tests – (SPT - Standard Penetration Test), wells opening and office analyses. The soil physical parameters analyses revealed high porosity (66%) in the friable soils. This in addition to the high levels of transmissivity (15.5 m2/h measured in Well 1 and 33 m2/h in Well 3), obtained from the flow test, increases the speed of the transportation of solutes including bacteria, to the underground water. Results of the granulometric analyses showed that the sand mining technique is not only predatory, but also inefficient, since the sand at the bottom of the pit is left unexploited, as well as the bentonite clay found in the deeper layers. According to the penetration tests (SPT), the aquifer has an average thickness of 5.5 m and an upper layer of impermeable organic clays that confine the sand deposits. Furthermore, an aquiclude composed of green bentonitic clays was identified just below the confined layer. However, it is necessary to point out that the confinement condition is lost as soon as the organic soil layer is removed during mining exploitation and the sandy deposits starts to have direct contact with freely circulating air in the atmosphere, therefore the aquifer becomes unconfined. With reference to the results concerning the water quality, the ammoniac nitrogen element was found in a concentration greater than expected, both in the wells and in the active pits. This occurs due to the release of tillage soil, rich in urea (ammonium nitrate), which is removed for the installation of sand mining dredgers. Heterotrophic bacteria were found in the groundwater. Therefore, the negative inte
Hydrogeology and hydrodynamics of Tremembé aquifer, S o Paulo, Brazil
Helio Nóbile Diniz,Getulio Teixeira Batista,Nelson Wellausen Dias,Marcelo dos Santos Targa
Ambiente e água : An Interdisciplinary Journal of Applied Science , 2008,
Abstract: This paper shows the results obtained from several pump tests of two wells drilled 13.2 meters apart, in the Agrarian Sciences Department of the University of Taubaté farm, located in the Una river hydrographic basin, Taubaté municipality, State of S o Paulo, Brazil. During well drilling some difficulties were encountered due to the presence of sandy grains without inter-granular cementation of the Tremembé Formation sandstones, Taubaté Group. The detailed description of the geologic profile obtained by sampling the perforated sedimentary layers shows the presence of persistent sandstone and conglomerate sequences, intercalated by layers of shale and claystone with limestone nodules. In order to determine the hydrodynamic parameters of the Tremembé aquifer, several pump tests were conducted during well perforation and the unconfined, leaky, water-table, and confined aquifer layers were sampled. Once the boreholes were completed, tests were conducted to determine maximum discharge rate, interference between wells and artificial recharge potential. In addition to establishing appropriated methodologies for the determination of aquifer hydrodynamics, this paper describes techniques for interpreting the effects of artificial recharge and interference between wells, and demonstrated the application of image well theory complemented with a new theory, the image well water-mirror.
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