{"id":59769,"date":"2022-11-18T15:15:49","date_gmt":"2022-11-18T15:15:49","guid":{"rendered":"https:\/\/www.aprh.pt\/?p=59769"},"modified":"2022-11-18T15:17:33","modified_gmt":"2022-11-18T15:17:33","slug":"agua-do-mar","status":"publish","type":"post","link":"https:\/\/aprh.pt\/pt\/publicacoes\/glossario\/a\/agua-do-mar\/","title":{"rendered":"\u00c1gua do mar"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"59769\" class=\"elementor elementor-59769\" data-elementor-post-type=\"post\">\n\t\t\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-ec26e9f elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"ec26e9f\" data-element_type=\"section\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-no\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-2304fbc8\" data-id=\"2304fbc8\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<section class=\"elementor-section elementor-inner-section elementor-element elementor-element-40f66104 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"40f66104\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-no\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-inner-column elementor-element elementor-element-127d9b18\" data-id=\"127d9b18\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-5fe945be elementor-widget elementor-widget-heading\" data-id=\"5fe945be\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Gloss\u00e1rio<\/h2>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-6b3aa6cd elementor-nav-menu__align-center elementor-nav-menu--dropdown-none elementor-widget elementor-widget-nav-menu\" data-id=\"6b3aa6cd\" data-element_type=\"widget\" data-settings=\"{&quot;layout&quot;:&quot;horizontal&quot;,&quot;submenu_icon&quot;:{&quot;value&quot;:&quot;&lt;i class=\\&quot;fas fa-caret-down\\&quot;&gt;&lt;\\\/i&gt;&quot;,&quot;library&quot;:&quot;fa-solid&quot;}}\" data-widget_type=\"nav-menu.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t<nav aria-label=\"Menu\" class=\"elementor-nav-menu--main elementor-nav-menu__container elementor-nav-menu--layout-horizontal e--pointer-underline e--animation-fade\">\n\t\t\t\t<ul id=\"menu-1-6b3aa6cd\" class=\"elementor-nav-menu\"><li class=\"menu-item menu-item-type-taxonomy 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class=\"elementor-item\">O<\/a><\/li>\n<li class=\"menu-item menu-item-type-taxonomy menu-item-object-category menu-item-54665\"><a href=\"https:\/\/aprh.pt\/pt\/category\/publicacoes\/glossario\/p\/\" class=\"elementor-item\">P<\/a><\/li>\n<li class=\"menu-item menu-item-type-taxonomy menu-item-object-category menu-item-54666\"><a href=\"https:\/\/aprh.pt\/pt\/category\/publicacoes\/glossario\/q\/\" class=\"elementor-item\">Q<\/a><\/li>\n<li class=\"menu-item menu-item-type-taxonomy menu-item-object-category menu-item-54667\"><a href=\"https:\/\/aprh.pt\/pt\/category\/publicacoes\/glossario\/r\/\" class=\"elementor-item\">R<\/a><\/li>\n<li class=\"menu-item menu-item-type-taxonomy menu-item-object-category menu-item-54668\"><a href=\"https:\/\/aprh.pt\/pt\/category\/publicacoes\/glossario\/s\/\" class=\"elementor-item\">S<\/a><\/li>\n<li class=\"menu-item menu-item-type-taxonomy menu-item-object-category menu-item-54669\"><a 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href=\"https:\/\/aprh.pt\/pt\/category\/publicacoes\/glossario\/y\/\" class=\"elementor-item\" tabindex=\"-1\">Y<\/a><\/li>\n<li class=\"menu-item menu-item-type-taxonomy menu-item-object-category menu-item-54675\"><a href=\"https:\/\/aprh.pt\/pt\/category\/publicacoes\/glossario\/z\/\" class=\"elementor-item\" tabindex=\"-1\">Z<\/a><\/li>\n<\/ul>\t\t\t<\/nav>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-192f4ba6 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"192f4ba6\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-no\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-25 elementor-top-column elementor-element elementor-element-6abfb7\" data-id=\"6abfb7\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-3c578e75 elementor-widget elementor-widget-heading\" data-id=\"3c578e75\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">\u00c1gua do mar<\/h2>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-top-column elementor-element elementor-element-67d4829b\" data-id=\"67d4829b\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-2bcaf390 elementor-widget elementor-widget-text-editor\" data-id=\"2bcaf390\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p>\u00c1gua com alta concentra\u00e7\u00e3o em sais dissolvidos, e que ocorre em ambientes h\u00eddricos marinhos. Utiliza-se, geralmente, por contraposi\u00e7\u00e3o a \u00e1gua doce.<\/p><p>A salinidade m\u00e9dia da \u00e1gua do mar \u00e9 35\u2030. Por\u00e9m, h\u00e1 heterogeneidades entre as diferentes regi\u00f5es marinhas, variando a concentra\u00e7\u00e3o de sais entre e 30\u2030 e 35\u2030. Na proximidade de grandes rios a salinidade pode ser bastante menor, chegando mesmo a\u00ed a ocorrer, no decurso das grandes cheias, \u00e1gua doce. A salinidade da \u00e1gua do mar tamb\u00e9m diminui significativamente em zonas em que os glaciares chegam ao mar, devido \u00e0 fus\u00e3o do gelo.<\/p><p>O mar aberto com maior salinidade \u00e9 o Mar Vermelho onde, devido \u00e0 evapora\u00e7\u00e3o (amplificada pela ac\u00e7\u00e3o do vento), \u00e0 pequena precipita\u00e7\u00e3o, ao reduzido fornecimento fluvial, e \u00e0 circula\u00e7\u00e3o muito confinada, a salinidade varia entre 36\u2030 e 38\u2030. No caso de mares fechados, devido \u00e0 evapora\u00e7\u00e3o, a salinidade pode ser bastante maior, como acontece no Mar Morto que apresenta, nos 35 metros superficiais, salinidades da ordem de 300\u2030 a 400\u2030.<\/p><p>A densidade da \u00e1gua do mar varia com a salinidade e a temperatura. A densidade m\u00e9dia da \u00e0 superf\u00edcie \u00e9 de 1,025g\/ml, variando entre 1,020 g\/ml e 1,029 g\/ml, mais densa do que a \u00e1gua doce (1,000g\/ml). Em profundidade, devido \u00e0 temperatura e \u00e0 press\u00e3o, a densidade da \u00e1gua \u00e9 tendencialmente maior, atingindo valores de 1,050g\/ml ou maiores. A temperatura de congela\u00e7\u00e3o da \u00e1gua do mar decresce em fun\u00e7\u00e3o da salinidade sendo de -2\u00baC para a salinidade 35%o.<\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-180112fc elementor-widget elementor-widget-text-editor\" data-id=\"180112fc\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p><a href=\"https:\/\/www.aprh.pt\/pt\/publicacoes\/glossario\/autores\/\">Autor<\/a>: JAD<\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"elementor-column elementor-col-25 elementor-top-column elementor-element elementor-element-56b8e1ca elementor-hidden-tablet elementor-hidden-mobile\" data-id=\"56b8e1ca\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap\">\n\t\t\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-3ccef929 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"3ccef929\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-no\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-576b3367\" data-id=\"576b3367\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-48588d2d elementor-widget elementor-widget-global elementor-global-500 elementor-widget-spacer\" data-id=\"48588d2d\" data-element_type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/div>\n\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>\u00c1gua com alta concentra\u00e7\u00e3o em sais dissolvidos, e que ocorre em ambientes h\u00eddricos marinhos. Utiliza-se, geralmente, por contraposi\u00e7\u00e3o a \u00e1gua doce.<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[286],"tags":[],"class_list":["post-59769","post","type-post","status-publish","format-standard","hentry","category-a"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v23.8 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>\u00c1gua do mar - APRH<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/aprh.pt\/pt\/publicacoes\/glossario\/a\/agua-do-mar\/\" \/>\n<meta property=\"og:locale\" content=\"pt_PT\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"\u00c1gua do mar - APRH\" \/>\n<meta property=\"og:description\" content=\"\u00c1gua com alta concentra\u00e7\u00e3o em sais dissolvidos, e que ocorre em ambientes h\u00eddricos marinhos. 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