scholarly journals ANALYSES OF WATER TABLE DEPTHS VARIATIONS IN AN OUTCROP AREA OF THE GUARANI AQUIFER SYSTEM IN BROTAS/SP-BRAZIL

Irriga ◽  
2015 ◽  
Vol 1 (1) ◽  
pp. 186-197
Author(s):  
Rodrigo Lilla Manzione ◽  
Bruna Camargo Soldera ◽  
Claudiane Otilia Paes ◽  
Edson Wendland

ANALYSES OF WATER TABLE DEPTHS VARIATIONS IN AN OUTCROP AREA OF THE GUARANI AQUIFER SYSTEM IN BROTAS/SP-BRAZIL  RODRIGO LILLA MANZIONE 1; BRUNA CAMARGO SOLDERA 2; CLAUDIANE OTILIA PAES 3 E EDSON WENDLAND 4 1 UNESP/OURINHOS – São Paulo State University, Ourinhos, SP, Brazil. Email: [email protected] UNESP/FCA – São Paulo State University, Botucatu, SP, Brazil. Email: [email protected] UNESP/FCA – São Paulo State University, Botucatu, SP, Brazil. Email: [email protected] Department of Hydraulics and Sanitation – USP/EESC – University of São Paulo, São Carlos, SP, Brazil. Email: [email protected]  1 ABSTRACT Several factors may influence variations in ground water levels. Some of these factors present static behavior while others present dynamic changes over time. The differences in management operations in agricultural sites, plant development and agricultural practices have direct impact on the unsaturated zone, as the levels of recharge and water tables can respond differently due to local conditions.  Different information sources may be used and integrated in a statistical model to reveal the responses of ground water levels under certain conditions.  Understanding these processes involves meeting a way of representing correlated variables together to form a new and smaller set of derived variables with minimum loss of information, removing redundancy or duplication.  The objective of this study was to analyze the variations in water table depths using information from a groundwater monitoring network     in an outcrop area of the Guarani Aquifer System (GAS) in Brotas, São Paulo, Brazil, associated with soil, vegetation and  terrain variables,  which possibly influence the  groundwater dynamics.   A factorial analysis was applied to identify the underlying factors which would   explain    this pattern of correlation   within these sets of   study variables.  The main factors influencing the variations in   water table over the monitoring period were as follows:  sand particle size, terrain   attributes, soil texture, soil and crop management and vegetation. This methodology can be useful for groundwater management, policy making and regulation of soil use in watersheds, and regional studies, for example, maximizing information in data analysis. Keywords: factorial analysis, statistical modeling, recharge, Brazil  MANZIONE, R.L.; SOLDERA, B.C.; PAES, C.O.; WENDLAND, E.ANÁLISES DAS VARIAÇÕES DOS NÍVEIS FREÁTICOS EM UMA ÁREA DE AFLORAMENTO DO SISTEMA AQUÍFERO GUARANI EM BROTAS/SP-BRASIL  2 RESUMO Diversos fatores influenciam as variações de níveis freáticos. Alguns desses fatores apresentam comportamento estático enquanto outros apresentam mudanças dinâmicas ao longo do tempo. As diferenças nas operações de manejo do solo em áreas agrícolas, desenvolvimento de plantas e práticas agrícolas tem impactos diretos na zona não saturada uma vez que os níveis de recarga e lençóis freáticos podem responder a condições locais. Diferentes fontes de informação podem ser usadas e integradas em um modelo estatístico para revelar a resposta dos níveos de águas subterrâneas sob certas condições. Entender esses processos envolve encontrar uma maneira de representar variáveis correlacionadas juntas para formar um novo e menor conjunto de variáveis derivadas com uma perda mínima de informação, removendo redundâncias ou duplicações. O objetivo desse estudo foi analisar as variações dos níveis freáticos usando informações de uma rede de monitoramento de águas subterrâneas em uma área de afloramento do Sistema Aquífero Guarani (SAG) em Brotas, São Paulo, Brasil associadas a variáveis de solo, vegetação e terreno que possivelmente influenciem a dinâmica das águas subterrâneas. Foi aplicada a análise fatorial para identificar fatores que expliquem o padrão de correlação entre esse conjunto de variáveis observadas. Os principais fatores influenciando a variação dos níveis freáticos durante o período monitorado foi o tamanho da fração areia, atributos de terreno, textura do solo, manejo dos solos e culturas e vegetação. Essa metodologia pode ser útil para a gestão das águas subterrâneas, formulação de políticas e regulação do uso do solo em bacias hidrográficas e estudos regionais, por exemplo, maximizando as informações na análise de dados. Palavras-chave: análise fatorial, modelagem estatística, recarga, Brasil

2020 ◽  
Vol 54 (1) ◽  
pp. qjegh2020-091 ◽  
Author(s):  
Ricardo Hirata ◽  
Stephen Foster

The Guarani Aquifer System is a massive groundwater body underlying large areas of Brazil, Paraguay, Uruguay and Argentina, with a thickness of 50–600 m (averaging about 250 m). It is one of the world's largest sandstone aquifers. The mainly weakly-cemented sandstones were formed by aeolian, fluvial and lacustrine continental deposition during the Triassic–Jurassic period and are overlain by extensive Cretaceous basalt lava-flows. The system is totally storage-dominated, with recharge amounting to only about 0.2% of the estimated 30 000 km3 of water stored. Using 14C and81Kr techniques, it was possible to confirm extremely slow flow rates, with groundwater older than 730 000 years BP in some parts of São Paulo State, Brazil. The vast regional freshwater storage contrasts sharply with localized active flow systems of recharge areas, which are strongly impacted by land-use change. The aquifer is the best known and most exploited in São Paulo State (80% of total extraction) and the experience of groundwater use for the supply of Ribeirão Preto and São José do Rio Preto (both with populations of over 0.5 million), together with one transboundary urban area, will be summarized.Thematic collection: This article is part of the Hydrogeology of Sandstone collection available at: https://www.lyellcollection.org/cc/hydrogeology-of-sandstone


2011 ◽  
Vol 31 (4) ◽  
pp. 444-456 ◽  
Author(s):  
Ricardo Hirata ◽  
Ana Gesicki ◽  
Ondra Sracek ◽  
Reginaldo Bertolo ◽  
Paulo César Giannini ◽  
...  

2021 ◽  
Vol 80 (3) ◽  
Author(s):  
Lucas Vituri Santarosa ◽  
Didier Gastmans ◽  
Tatiana Penteado Sitolini ◽  
Roberto Eduardo Kirchheim ◽  
Sebastian Balbin Betancur ◽  
...  

2011 ◽  
Vol 33 (spe1) ◽  
pp. 752-761 ◽  
Author(s):  
Sarita Leonel ◽  
Manoel Euzébio De Souza ◽  
Marco Antonio Tecchio ◽  
Daniela Mota Segantini

The study evaluated the leaf nutritional levels of peach and nectarine trees under subtropical climate in order to improve the fertilization practices. The experiment was carried out in São Paulo state University, Botucatu, São Paulo State, Brazil. The experimental design consisted of subdivided plots, in which plots corresponded to cultivars and subplots to the leaf sample periods. The evaluated peach cultivars were: Marli, Turmalina, Precocinho, Jubileu, Cascata 968, Cascata 848, CP 951C, CP 9553CYN, and Tropic Beauty, and that of nectarine was 'Sun Blaze'. The sample periods were: after harvest, plants in vegetative period; dormancy; beginning of flowering and fruiting (standard sample). Results indicated significant variations in the levels of N, P, K, Ca, Mg, S, B, Cu, Fe, Mn and Zn for the sampling period and in N, Ca, Mg, S, B, Fe and Mn levels for the cultivars.


1969 ◽  
Vol 2 (02) ◽  
Author(s):  
Ubirajara Rancan de Azevedo MARQUES

Estudos Kantianos [EK] registers the passing of Dr. Clélia Aparecida Matins, a member of its Editorial Board, university lecturer and researcher in the Philosophy Department of the Faculty of Philosophy and Sciences of São Paulo State University, on the 15th of July p. p. An enthusiast of the activities carried out by the Centre of Kantian Research and Studies “Valerio Rohden” [CPEK], which is responsible for the EK project, Clélia Martins greatly collaborated with the Kant-Colloquia in Marília (also promoted by the same CPEK), which in her memory will henceforth be designated by Kant Colloquia “Clélia Martins”, starting with its next edition in August 2015. EK is grateful to Prof. Dr. Heiner Klemme for his text inmemory of Dr. Clélia Aparecida Martins.


2021 ◽  
Vol 15 (2) ◽  
pp. e0009086
Author(s):  
Luciana Bonome Zeminian de Oliveira ◽  
Amanda Manoel Della Coletta ◽  
Taiane Priscila Gardizani ◽  
Ligia Vizeu Barrozo ◽  
Hélio Amante Miot ◽  
...  

Paracoccidioidomycosis (PCM) is a neglected mycosis most commonly occurring in Latin America. The etiologic agents are thermo dimorphic fungi of the genus Paracoccidioides, and cause an important granulomatous response in affected tissues. The Botucatu Medical School, from São Paulo State University (UNESP), is a PCM study pole, located in São Paulo State Midwest region, which is classified as a hyperendemic area in the Southeast region in Brazil. This study aimed to perform a retrospective epidemiological, geographical, and clinical analysis by the information available in medical records. It was listed as socio-demographic data along with clinical characteristics from patients diagnosed and treated during a 10-year period in Botucatu, totaling 177 patients with Paracoccidioidomycosis confirmed by the histopathological test. It was observed that the main clinical presentation was the chronic type (76,3%), most commonly identified in white male individuals over the age of 29 years old, smokers, and alcoholics, providing evidences for the first time that white individuals were more affected by the disease, in comparison to non-white individuals that may be more resistant to infection. This data opens new avenues for study within ancestry, resistance and susceptibility in paracoccidioidomycosis.


2017 ◽  
Vol 6 (2) ◽  
pp. 5
Author(s):  
José Pacheco ◽  
Davi Eiji Furutani de Oliveira ◽  
Felipe Ziotti Narita

Entrevista com José Pacheco concebido por Davi Eiji Furutani de Oliveira (USP) e organizada por Felipe Ziotti Narita (Unesp). José Pacheco realizou estudos no campo da educação na Universidade do Porto e, nos anos 1970, foi o responsável pela formação da Escola da Ponte em Portugal. Amplamente reconhecido pela experiência junto à Escola da Ponte, José Pacheco vem construindo, nas últimas décadas, um vínculo muito estreito com projetos de educação no Brasil. Interview with José Pacheco. The interview was conceived by Davi Eiji Furutani de Oliveira (University of São Paulo - USP) and the material was organized by Felipe Ziotti Narita (São Paulo State University - Unesp).


2011 ◽  
Vol 31 (5) ◽  
pp. 923-929 ◽  
Author(s):  
Fabricio Leite ◽  
João E. G. dos Santos ◽  
Kleber P. Lanças ◽  
João B. Leite Júnior

The present work aimed to evaluate the tractive performance of four agricultural tractors with auxiliary front traction in function of six lateral inclinations in a lateral track of trials, which belongs to the Agronomic Sciences Faculty from the São Paulo State University, Campus of Botucatu. The lateral inclinations were 0; 5; 10; 15; 20 and 25 degrees. In all of these situations, the tractors operated with predetermined load of an imposed traction to the pulled tractor of 40 kN in the inclination of 0 degrees. Hence a delineation in random blocks was used, considering six inclinations and four tractors, and with three repetitions for each treatment. The analyzed variables were slippage, tractive force, hourly fuel consumption, and speed. It was concluded that the pneumatic tire configurations influenced in the tractive performance of the tractors, as they increased the lateral inclinations of the terrain.


2021 ◽  
Vol 10 (13) ◽  
pp. e127101320863
Author(s):  
Matheus Balsalobre Simieli ◽  
Raíssa Pereira Dinalli Gazola ◽  
Maximiliano Kawahata Pagliarini ◽  
Pablo Forlan Vargas ◽  
Regina Maria Monteiro de Castilho

The objective of this work was to evaluate the development and growth of hop cultivars under high temperature conditions. The work was developed at the Farm of Teaching, Research and Extension the School of Engineering of São Paulo State University (UNESP), Campus of Ilha Solteira in two harvests. The design used was randomized blocks with six treatments (cultivars – Cascade, Millenium, Chinook, Centennial, Magnum and Nugget), and six replications. Plant height, leaf chlorophyll index, number of flowers and flower mass in two crops were evaluated. In the first harvest, the Nugget variety had the greatest growth. The Cascade, Millenium and Chinook varieties did not produce flowers. From those that produced, the cultivar Magnum obtained 132.90 kg ha-1 of flowers. In the second harvest the Cascade and Chinook varieties did not produce flowers. Cultivars Cascade, Millenium, Centennial and Nugget showed the highest growth in height. The Magnum variety produced the greatest amount of flowers (467.33 kg ha-1), followed by the Millenium (290.56 kg ha-1) and Centennial (226.60 kg ha-1) variety. Thus, for the brewing, pharmaceutical or cosmetic industry, the cultivation of the Magnum variety is recommended in the northwest region of São Paulo state, as it produces a greater quantity of flowers. If the purpose is ornamental, the cultivation of the Cascade, Nugget, Centennial and Millenium varieties may be recommended as they show the greatest height development.


Sign in / Sign up

Export Citation Format

Share Document