{"id":24925,"date":"2021-08-09T09:00:37","date_gmt":"2021-08-09T07:00:37","guid":{"rendered":"https:\/\/www.asi.it\/?p=24925"},"modified":"2021-08-04T13:53:16","modified_gmt":"2021-08-04T11:53:16","slug":"prisma-in-support-of-water-quality","status":"publish","type":"post","link":"https:\/\/www.asi.it\/en\/2021\/08\/prisma-in-support-of-water-quality\/","title":{"rendered":"PRISMA in support of water quality"},"content":{"rendered":"The lake Trasimeno and its features seen by the Italian satellite\r\n\r\n\r\n

In this PRISMA image of Lake Trasimeno acquired on November 30, 2020, it is possible to notice some typical characteristics of the lake waters. The greenish colour that predominates throughout the lake is due to the presence of phytoplankton: Lake Trasimeno is in fact a meso-eutrophic lake with chlorophyll concentrations averaging 9 mgm-3<\/sup>. The lighter streaks well visible inside the lake, especially in the western part, represent instead the sediment resuspensions phenomena due to winds and therefore the presence in water of suspended solids, which are manifested by causing an increase in the electromagnetic signal emerging from the water in the wavelengths of Red and NIR (Near-Infrared). The southernmost part of the lake, below the Polvese Island (the largest of the three islands of Lake Trasimeno) has the typical darker colour due to the presence of submerged and floating macrophytes.<\/span><\/p>\r\n

The image, that is a crop of a 30×30 km spotlight acquisition, has been elaborated in the framework of the ASI project \u201cSviluppo di Prodotti Iperspettrali Prototipali Evoluti\u201d\u00a0<\/b><\/span>whose main objective is the prototyping of a subset of L3 \/ L4 value-added products to be retrieved by means of hyperspectral data processing. Among the prototypes that are intended to be developed, there is the\u00a0Water Quality<\/b> product that reports the following parameters: Phytoplankton, Total Suspended Matter, Bottom Substrate.<\/span>\u00a0<\/i><\/p>\r\n

Data\/Information generated by Federica Braga \u2013 Centro Nazionale delle Ricerche-Istituto di Scienze Marine\u00a0<\/i>(CNR-ISMAR), Mariano Bresciani and Claudia Giardino\u00a0<\/i>\u2013 Centro Nazionale delle Ricerche-Istituto per il Rilevamento Elettromagnetico dell\u2019Ambiente-<\/i>(CNR-IREA),\u00a0<\/i>under an ASI License to Use; Original PRISMA Product – \u00a9 ASI \u2013 (2021)<\/i><\/p>","protected":false},"excerpt":{"rendered":"

The lake Trasimeno and its features seen by the Italian satellite<\/p>\n","protected":false},"author":4,"featured_media":24923,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_relevanssi_hide_post":"","_relevanssi_hide_content":"","_relevanssi_pin_for_all":"","_relevanssi_pin_keywords":"","_relevanssi_unpin_keywords":"","_relevanssi_related_keywords":"","_relevanssi_related_include_ids":"","_relevanssi_related_exclude_ids":"","_relevanssi_related_no_append":"","_relevanssi_related_not_related":"","_relevanssi_related_posts":"","_relevanssi_noindex_reason":"","footnotes":""},"categories":[50],"tags":[],"class_list":["post-24925","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-earth-science"],"acf":[],"yoast_head":"\nPRISMA in support of water quality - ASI<\/title>\n<meta name=\"description\" content=\"The lake Trasimeno and its features seen by the Italian satellite In this PRISMA image of Lake Trasimeno acquired on November 30, 2020, it is possible to\" \/>\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.asi.it\/en\/2021\/08\/prisma-in-support-of-water-quality\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"PRISMA in support of water quality\" \/>\n<meta property=\"og:description\" content=\"The lake Trasimeno and its features seen by the Italian satellite In this PRISMA image of Lake Trasimeno acquired on November 30, 2020, it is possible to\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.asi.it\/en\/2021\/08\/prisma-in-support-of-water-quality\/\" \/>\n<meta property=\"og:site_name\" content=\"ASI\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/agenziaspazialeitaliana\" \/>\n<meta property=\"article:published_time\" content=\"2021-08-09T07:00:37+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.asi.it\/wp-content\/uploads\/2021\/08\/trasimeno30-11-2020.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1920\" \/>\n\t<meta property=\"og:image:height\" content=\"1080\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Valeria Guarnieri\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@ASI_spazio\" \/>\n<meta name=\"twitter:site\" content=\"@ASI_spazio\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Valeria Guarnieri\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"2 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/www.asi.it\/en\/2021\/08\/prisma-in-support-of-water-quality\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/www.asi.it\/en\/2021\/08\/prisma-in-support-of-water-quality\/\"},\"author\":{\"name\":\"Valeria Guarnieri\",\"@id\":\"https:\/\/www.asi.it\/en\/#\/schema\/person\/273e95ece7af1a6d0703b8b4241307b8\"},\"headline\":\"PRISMA in support of water quality\",\"datePublished\":\"2021-08-09T07:00:37+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/www.asi.it\/en\/2021\/08\/prisma-in-support-of-water-quality\/\"},\"wordCount\":272,\"publisher\":{\"@id\":\"https:\/\/www.asi.it\/en\/#organization\"},\"image\":{\"@id\":\"https:\/\/www.asi.it\/en\/2021\/08\/prisma-in-support-of-water-quality\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/www.asi.it\/wp-content\/uploads\/2021\/08\/trasimeno30-11-2020.jpg\",\"articleSection\":[\"Earth Science\"],\"inLanguage\":\"en-US\"},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.asi.it\/en\/2021\/08\/prisma-in-support-of-water-quality\/\",\"url\":\"https:\/\/www.asi.it\/en\/2021\/08\/prisma-in-support-of-water-quality\/\",\"name\":\"PRISMA in support of water quality - 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