{"id":720,"date":"2012-04-17T08:46:00","date_gmt":"2012-04-17T06:46:00","guid":{"rendered":"https:\/\/kids.esa.int\/satellites_can_prevent_another_titanic\/"},"modified":"2026-10-08T00:31:31","modified_gmt":"2026-10-07T22:31:31","slug":"satellites_can_prevent_another_titanic","status":"publish","type":"post","link":"https:\/\/kids.esa.int\/fi\/satellites_can_prevent_another_titanic\/","title":{"rendered":"Satelliitit voivat est\u00e4\u00e4 uuden Titanicin kaltaisen onnettomuuden"},"content":{"rendered":"<div class=\"lede\">\n<p>Sata vuotta sitten, 15. huhtikuuta 1912, RMS Titanic t\u00f6rm\u00e4si j\u00e4\u00e4vuoreen ja upposi ylitt\u00e4ess\u00e4\u00e4n Pohjois-Atlanttia, mink\u00e4 seurauksena yli 1 500 matkustajaa ja miehist\u00f6n j\u00e4sent\u00e4 menetti henkens\u00e4. Nyky\u00e4\u00e4n tuhannet alukset kulkevat samaa reitti\u00e4 ilman, ett\u00e4 kukaan menett\u00e4\u00e4 henkens\u00e4 \u2013 ja satelliitit auttavat t\u00e4ss\u00e4.<\/p>\n<\/div>\n<p>Frederick Fleetin teht\u00e4v\u00e4n\u00e4 oli toimia Titanicilla t\u00e4hyst\u00e4j\u00e4n\u00e4 14. huhtikuuta 1912 y\u00f6ll\u00e4. Frederickin antamat tiedot j\u00e4\u00e4lautoista olivat ainoat tiedot, joiden varassa kapteeni Edward John Smith joutui ohjaamaan alusta n\u00e4ill\u00e4 vaarallisilla vesill\u00e4.<\/p>\n<p>Yksi Titanicin katastrofin merkitt\u00e4vimmist\u00e4 seurauksista oli merenkulun turvallisuuden parantuminen, mik\u00e4 johti \u201dIhmishengen turvallisuutta merell\u00e4 koskevan kansainv\u00e4lisen yleissopimuksen\u201d sek\u00e4 Kansainv\u00e4lisen j\u00e4\u00e4partion (IIP) perustamiseen.<\/p>\n<p>J\u00e4\u00e4partion teht\u00e4v\u00e4n\u00e4 on seurata j\u00e4\u00e4vuoria ja m\u00e4\u00e4ritt\u00e4\u00e4 j\u00e4\u00e4vuorivaara-alue. Arktisilla vesill\u00e4 voi milloin tahansa olla tuhansia j\u00e4\u00e4vuoria. J\u00e4\u00e4partion haasteena on m\u00e4\u00e4ritt\u00e4\u00e4, kuinka monta j\u00e4\u00e4vuorta ajautuu etel\u00e4\u00e4n kohti laivav\u00e4yli\u00e4. T\u00e4h\u00e4n menness\u00e4 yksik\u00e4\u00e4n alus, joka on noudattanut j\u00e4\u00e4partion julkaisemaa \u2018j\u00e4\u00e4vuorirajaa\u2019, ei ole t\u00f6rm\u00e4nnyt j\u00e4\u00e4vuoreen!<\/p>\n<figure class=\"wp-block-image size-natural\" data-width=\"400\" data-credit=\"ESA\/DLR\" data-detail-url=\"https:\/\/www.esa.int\/Media\/Animations\/Baltic_Sea_Animation\" data-licence=\"ESA Standard Licence\" data-licence-url=\"https:\/\/www.esa.int\/ESA_Multimedia\/Terms_and_conditions_of_use_of_images_and_videos_available_on_the_esa_website\"><img decoding=\"async\" loading=\"lazy\" style=\"max-width:100%;height:auto\" src=\"https:\/\/www.esa.int\/var\/esa\/storage\/images\/media\/animations\/baltic_sea_animation\/8598463-4-eng-GB\/Baltic_Sea_Animation.jpg\" alt=\"\"><\/figure>\n<p>Aluksi j\u00e4\u00e4partio k\u00e4ytti merialuksia rutiiniluonteisten j\u00e4\u00e4partiointien suorittamiseen, mutta siirtyi ilmatarkkailuun toisen maailmansodan j\u00e4lkeen. Nyky\u00e4\u00e4n ilmatarkkailu on ensisijainen menetelm\u00e4, mutta IIP:n tavoitteena on korvata kalliit j\u00e4\u00e4lennot satelliittihavainnoilla.<\/p>\n<p>Nyky\u00e4\u00e4n j\u00e4\u00e4partio k\u00e4ytt\u00e4\u00e4 satelliittipohjaisia tutkahavaintoja t\u00e4ydent\u00e4m\u00e4\u00e4n ilmakuvaushavaintoja. Satelliittien tutkat sopivat erinomaisesti j\u00e4\u00e4vuorien seurantaan, koska ne pystyv\u00e4t ottamaan kuvia pilvien ja pimeyden l\u00e4pi.<\/p>\n<p>Vuonna 2013 laukaisunsa odottava Sentinel-1 lis\u00e4\u00e4 huomattavasti tutkatietojen saatavuutta ja auttaa j\u00e4\u00e4partiota v\u00e4ltt\u00e4m\u00e4\u00e4n vuosisadan takaisen Titanicin kaltaisia katastrofeja.<\/p>","protected":false},"excerpt":{"rendered":"<p>One hundred years ago, on 15 April 1912, the RMS Titanic struck an iceberg and sank while crossing the North Atlantic Ocean, causing the deaths of over 1500 passengers and [&hellip;]<\/p>\n","protected":false},"author":5,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"esa_banner_image":"https:\/\/www.esa.int\/var\/esa\/storage\/images\/esa_multimedia\/images\/2012\/04\/iceberg2\/17890577-2-eng-GB\/Iceberg.jpg","esa_banner_description":"","esa_banner_credit":"ESA","esa_banner_licence":"ESA Standard Licence","esa_banner_detail_url":"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2012\/04\/Iceberg2","esa_external_url":"","esa_external_new_window":false,"_jetpack_feature_clip_id":0,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_post_was_ever_published":true},"categories":[64,42,10],"tags":[],"panel":[],"language":[],"age":[],"duration":[],"resource_type":[],"audience":[],"wf_post_folders":[],"class_list":["post-720","post","type-post","status-publish","format-standard","hentry","category-climate-change","category-earth","category-learn"],"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/posts\/720","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/comments?post=720"}],"version-history":[{"count":5,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/posts\/720\/revisions"}],"predecessor-version":[{"id":4648,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/posts\/720\/revisions\/4648"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/media?parent=720"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/categories?post=720"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/tags?post=720"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/panel?post=720"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/language?post=720"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/age?post=720"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/duration?post=720"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/resource_type?post=720"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/audience?post=720"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/wf_post_folders?post=720"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}