{"id":3925,"date":"2020-11-05T13:33:35","date_gmt":"2020-11-05T13:33:35","guid":{"rendered":"https:\/\/www.ufrgs.br\/hge\/?p=3925"},"modified":"2020-11-19T00:53:42","modified_gmt":"2020-11-19T00:53:42","slug":"hge2","status":"publish","type":"post","link":"https:\/\/www.ufrgs.br\/hge\/hge2\/","title":{"rendered":"Hidrologia de Grande Escala"},"content":{"rendered":"
O Grupo de Pesquisa de Hidrologia de Grande Escala \u00e9 parte do Instituto de Pesquisas Hidr\u00e1ulicas<\/a> da Universidade Federal do Rio Grande do Sul<\/a>, e \u00e9 formado por professores, pesquisadores e estudantes vinculados ao Curso de P\u00f3s-Gradua\u00e7\u00e3o em Recursos H\u00eddricos e Saneamento Ambiental da UFRGS e colaboradores de outras institui\u00e7\u00f5es.<\/div>\n
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\"\"<\/a>O objetivo do grupo de pesquisa \u00e9 aprimorar o conhecimento da hidrologia de grandes bacias hidrogr\u00e1ficas e grandes rios, com \u00eanfase para a Am\u00e9rica do Sul.\u00a0Problemas atuais e futuros de aproveitamento e gest\u00e3o de recursos h\u00eddricos, al\u00e9m de desastres naturais, ocorrem em centenas ou milhares de quil\u00f4metros, chegando \u00e0 escala continental ou global, transcendendo fronteiras pol\u00edticas entre estados e pa\u00edses. A vis\u00e3o integrada destas quest\u00f5es exige an\u00e1lises hidrol\u00f3gicas nas escalas local, regional, nacional, continental e global. Estas an\u00e1lises v\u00eam sendo impulsionadas pela crescente disponibilidade informa\u00e7\u00e3o, dada pelos aos avan\u00e7os recentes de sistemas de modelagem hidrol\u00f3gica e hidr\u00e1ulica, novos sensores remotos e melhores capacidades de interpreta\u00e7\u00e3o e an\u00e1lise estat\u00edstica de grande volume de dados.<\/div>\n
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As \u00e1reas de atua\u00e7\u00e3o s\u00e3o:<\/strong><\/div>\n
Desenvolvimento de modelos hidrol\u00f3gicos, com destaque para os modelos MGB, SIAQUA-IPH, SAD-IPH; Previs\u00e3o de cheias e previs\u00e3o hidrol\u00f3gica em geral; previs\u00f5es de vaz\u00e3o por conjunto; An\u00e1lise de efeitos de mudan\u00e7as clim\u00e1ticas, mudan\u00e7as de vegeta\u00e7\u00e3o e usos da \u00e1gua em grande escala; Mitiga\u00e7\u00e3o dos efeitos adversos da variabilidade clim\u00e1tica e eventos meteorol\u00f3gicos extremos\u00a0 como cheias e estiagens\u00a0 sobre os rios; Desenvolvimento de modelos hidrodin\u00e2micos de rios e lagos; Aplica\u00e7\u00e3o de dados de sensoriamento remoto em hidrologia; Estudo das rela\u00e7\u00f5es entre o clima e os recursos h\u00eddricos; Desenvolvimento de ferramentas de geoprocessamento aplicado \u00e0 hidrologia; Integra\u00e7\u00e3o entre Sistemas de Informa\u00e7\u00e3o Geogr\u00e1fica e modelos hidrol\u00f3gicos; Desenvolvimento de modelos de qualidade de \u00e1gua em grandes bacias.<\/div>\n
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Resumo do funcionamento do MGB<\/p><\/div>\n

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Este site cont\u00e9m informa\u00e7\u00f5es sobre as pesquisas dos membros do grupo, publica\u00e7\u00f5es, e tamb\u00e9m sobre os modelos matem\u00e1ticos que desenvolvemos.<\/div>\n
Alguns destaques do trabalho recente do grupo s\u00e3o:<\/strong><\/div>\n
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\u2022Coopera\u00e7\u00e3o em Tecnologias para An\u00e1lises Hidrol\u00f3gicas em Escala Nacional<\/div>\n
\u2022Estudo e Modelagem H\u00eddrica de Sistemas Naturais com apoio de Sensoriamento Remoto<\/div>\n
\u2022Modelagem hidrossedimentol\u00f3gica de bacias hidrogr\u00e1ficas de grande escala<\/div>\n
\u2022Modelo Hidrol\u00f3gico da Am\u00e9rica do Sul<\/div>\n
\u2022Estimativa de evapotranspira\u00e7\u00e3o por sensoriamento remoto para gest\u00e3o de recursos h\u00eddricos no Brasil<\/div>\n
\u2022Sensoriamento remoto aplicado \u00e1 modelagem de processos clim\u00e1ticos e hidrometereol\u00f3gicos<\/div>\n
\u2022Previs\u00e3o de vaz\u00f5es e n\u00edveis na bacia hidrogr\u00e1fica da Laguna dos Patos<\/div>\n
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Am\u00e9rica do Sul<\/p><\/div>\n

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E afinal, o\u00a0que \u00e9 hidrologia de grande escala?<\/strong><\/div>\n<\/div>\n
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Para n\u00f3s, hidrologia de grande escala \u00e9 o estudo de grandes bacias hidrogr\u00e1ficas. E grandes bacias hidrogr\u00e1ficas, em nossa concep\u00e7\u00e3o, se enquadram aproximadamente nos seguintes crit\u00e9rios (n\u00e3o definitivos):
\n\u2013 Regi\u00f5es geralmente maiores do que 1000 km\u00b2;
\n\u2013 Regi\u00f5es onde os processos de propaga\u00e7\u00e3o fluvial n\u00e3o podem ser negligenciados, ou seja, que o tempo de viagem da \u00e1gua na rede de drenagem seja grande (alto tempo de concentra\u00e7\u00e3o) e que os processos de transla\u00e7\u00e3o e atenua\u00e7\u00e3o de ondas de cheias sejam relevantes na compreens\u00e3o das din\u00e2micas da bacia.
\n\u2013 Regi\u00f5es onde a diferen\u00e7a entre os divisores de \u00e1gua superficial e subterr\u00e2nea pode ser desprezada;
\n\u2013 Regi\u00f5es onde a chuva e outras caracter\u00edsticas como tipo e uso de solo n\u00e3o podem ser consideradas homog\u00eaneas em toda a \u00e1rea, e por isto os m\u00e9todos cl\u00e1ssicos de hidrologia n\u00e3o s\u00e3o adequados;
\n\u2013 Regi\u00f5es onde a caracteriza\u00e7\u00e3o do terreno \u00e9 dif\u00edcil de ser realizada com medi\u00e7\u00f5es puramente in-situ, sendo necess\u00e1rio o apoio de t\u00e9cnicas de SIG e sensoriamento remoto.<\/p>\n
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Na imagem a seguir,\u00a0come\u00e7ando do canto superior esquerdo, em sentido hor\u00e1rio, s\u00e3o apresentados\u00a0 o B\u00e3nado La Estrella na Argentina, o Rio Negro e o Rio S\u00e3o Francisco.\u00a0Estas fotos foram tiradas pelos pesquisadores do grupo durante a realiza\u00e7\u00e3o de trabalhos e expedi\u00e7\u00f5es de campo.<\/div>\n<\/div>\n
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Na imagem a seguir,\u00a0come\u00e7ando do canto superior esquerdo, em sentido hor\u00e1rio, s\u00e3o apresentados o Rio Jacu\u00ed, a foz do Rio Doce, e a barragem\u00a0 do Salto em S\u00e3o Francisco de Paula e o Rio S\u00e3o Francisco.\u00a0Estas fotos foram tiradas pelos pesquisadores do grupo durante a realiza\u00e7\u00e3o de trabalhos e expedi\u00e7\u00f5es de campo.<\/span><\/div>\n
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O Grupo de Pesquisa de Hidrologia de Grande Escala \u00e9 parte do Instituto de Pesquisas Hidr\u00e1ulicas da Universidade Federal do Rio Grande do Sul, e \u00e9 formado por professores, pesquisadores e estudantes vinculados ao Curso de P\u00f3s-Gradua\u00e7\u00e3o em Recursos H\u00eddricos … Continue lendo →<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[1],"tags":[],"_links":{"self":[{"href":"https:\/\/www.ufrgs.br\/hge\/wp-json\/wp\/v2\/posts\/3925"}],"collection":[{"href":"https:\/\/www.ufrgs.br\/hge\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.ufrgs.br\/hge\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.ufrgs.br\/hge\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.ufrgs.br\/hge\/wp-json\/wp\/v2\/comments?post=3925"}],"version-history":[{"count":64,"href":"https:\/\/www.ufrgs.br\/hge\/wp-json\/wp\/v2\/posts\/3925\/revisions"}],"predecessor-version":[{"id":4708,"href":"https:\/\/www.ufrgs.br\/hge\/wp-json\/wp\/v2\/posts\/3925\/revisions\/4708"}],"wp:attachment":[{"href":"https:\/\/www.ufrgs.br\/hge\/wp-json\/wp\/v2\/media?parent=3925"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ufrgs.br\/hge\/wp-json\/wp\/v2\/categories?post=3925"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ufrgs.br\/hge\/wp-json\/wp\/v2\/tags?post=3925"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}