{"id":6221,"date":"2019-07-03T15:53:26","date_gmt":"2019-07-03T15:53:26","guid":{"rendered":"https:\/\/www.zoom--in.it\/?p=6221"},"modified":"2019-07-03T16:00:35","modified_gmt":"2019-07-03T16:00:35","slug":"quando-la-natura-scolpisce","status":"publish","type":"post","link":"https:\/\/www.zoom--in.it\/index.php\/2019\/07\/03\/quando-la-natura-scolpisce\/","title":{"rendered":"Quando la natura scolpisce"},"content":{"rendered":"\t\t
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Neve penitente<\/strong>
Fotografia di Art Wolfe<\/p>\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t

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La neve penitente (termine mutuato dallo spagnolo\u00a0nieve penitente<\/em>) \u00e8 una particolare formazione nevosa a forma di guglia che ricorda una figura umana incappucciata. In realt\u00e0 sono delle colonne di neve, larghe alla base e strette alla punta, che possono raggiungere anche i 6 metri di altezza. Questo incredibile fenomeno naturale tende a crearsi nelle valli poco profonde, dove la neve \u00e8 alta e il sole non batte ad angolazioni elevate: quando la neve si scioglie, i detriti si mescolano con l\u2019acqua di scioglimento che si raccoglie in piccole pozze sparse qua e l\u00e0, scavando queste fessure.<\/p>

In questa foto di Art Wolfe, fotografo e ambientalista americano dedito alla difesa ambientale, possiamo ammirare una distesa di\u00a0penitentes<\/em>\u00a0in Cile.\u00a0<\/p>\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t

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Fiori di ghiaccio<\/strong>
Fotografia di Kenneth M. Highfill<\/p>\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t

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Delicate come zucchero filato, le strutture come questa necessitano di condizioni perfette per formarsi. “Queste condizioni si verificano quando la temperatura \u00e8 proprio intorno allo zero – spiega Libbrecht, – e di solito compaiono sulle piante marce o impregnate d’acqua: in inverno si formano sugli Appalachi, dato che non fa troppo freddo e c’\u00e8 sempre molta acqua”.
Il congelamento deve avvenire molto delicatamente, di solito durante la notte, cosicch\u00e8 l’acqua contenuta nei vasi delle piante legnose si possa congelare lentamente, dall’alto verso il basso. Se le temperature si abbassano troppo, il congelamento avverr\u00e0 troppo rapidamente e il risultato non sar\u00e0 lo stesso. Se questo delicato equilibrio viene raggiunto, il ghiaccio viene spinto fuori dalla parte superiore delle piante ed ecco il risultato: lastre o nastri di ghiaccio che sembrano veri e propri fiori marmorei.\u00a0<\/p>

Kenneth M. Highfill, fotografo e reporter americano, \u00e8 riuscito in questo scatto ad immortalare il raro fenomeno conosciuto come i \u201cfiori di ghiaccio\u201d.<\/p>

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A cura di Ester Giamberini<\/strong><\/p>\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"

\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 Neve penitenteFotografia di Art Wolfe La neve penitente (termine mutuato<\/p>\n","protected":false},"author":1,"featured_media":6222,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"spay_email":""},"categories":[42],"tags":[],"yoast_head":"\nQuando la natura scolpisce - ZoomIN Magazine<\/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:\/\/www.zoom--in.it\/index.php\/2019\/07\/03\/quando-la-natura-scolpisce\/\" \/>\n<meta property=\"og:locale\" content=\"it_IT\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Quando la natura scolpisce - ZoomIN Magazine\" \/>\n<meta property=\"og:description\" content=\"\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 Neve penitenteFotografia di Art Wolfe La neve penitente (termine mutuato\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.zoom--in.it\/index.php\/2019\/07\/03\/quando-la-natura-scolpisce\/\" \/>\n<meta property=\"og:site_name\" content=\"ZoomIN Magazine\" \/>\n<meta property=\"article:published_time\" content=\"2019-07-03T15:53:26+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2019-07-03T16:00:35+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/i0.wp.com\/www.zoom--in.it\/wp-content\/uploads\/2019\/07\/145437865-ebfc4041-9a7b-412a-94ed-7a3fdfa6650e.jpg?fit=600%2C450&ssl=1\" \/>\n\t<meta property=\"og:image:width\" content=\"600\" \/>\n\t<meta property=\"og:image:height\" content=\"450\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Redazione\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Scritto da\" \/>\n\t<meta name=\"twitter:data1\" content=\"Redazione\" \/>\n\t<meta name=\"twitter:label2\" content=\"Tempo di lettura stimato\" \/>\n\t<meta name=\"twitter:data2\" content=\"1 minuto\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Organization\",\"@id\":\"https:\/\/www.zoom--in.it\/#organization\",\"name\":\"ZoomIN Magazine\",\"url\":\"https:\/\/www.zoom--in.it\/\",\"sameAs\":[],\"logo\":{\"@type\":\"ImageObject\",\"inLanguage\":\"it-IT\",\"@id\":\"https:\/\/www.zoom--in.it\/#\/schema\/logo\/image\/\",\"url\":\"https:\/\/i0.wp.com\/www.zoom--in.it\/wp-content\/uploads\/2018\/11\/cropped-final.png?fit=568%2C237&ssl=1\",\"contentUrl\":\"https:\/\/i0.wp.com\/www.zoom--in.it\/wp-content\/uploads\/2018\/11\/cropped-final.png?fit=568%2C237&ssl=1\",\"width\":568,\"height\":237,\"caption\":\"ZoomIN Magazine\"},\"image\":{\"@id\":\"https:\/\/www.zoom--in.it\/#\/schema\/logo\/image\/\"}},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/www.zoom--in.it\/#website\",\"url\":\"https:\/\/www.zoom--in.it\/\",\"name\":\"ZoomIN Magazine\",\"description\":\"Magazine Online libero e senza pubblicit\u00e0, pieno di rubriche e curiosit\u00e0\",\"publisher\":{\"@id\":\"https:\/\/www.zoom--in.it\/#organization\"},\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/www.zoom--in.it\/?s={search_term_string}\"},\"query-input\":\"required name=search_term_string\"}],\"inLanguage\":\"it-IT\"},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.zoom--in.it\/index.php\/2019\/07\/03\/quando-la-natura-scolpisce\/\",\"url\":\"https:\/\/www.zoom--in.it\/index.php\/2019\/07\/03\/quando-la-natura-scolpisce\/\",\"name\":\"Quando la natura scolpisce - 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