{"id":942,"date":"2004-12-03T10:16:00","date_gmt":"2004-12-03T09:16:00","guid":{"rendered":"https:\/\/kids.esa.int\/floods\/"},"modified":"2026-10-08T00:34:02","modified_gmt":"2026-10-07T22:34:02","slug":"floods","status":"publish","type":"post","link":"https:\/\/kids.esa.int\/fi\/floods\/","title":{"rendered":"Tulvat"},"content":{"rendered":"<div class=\"lede\">\n<p>Tulvat ovat maailman kallein luonnonkatastrofityyppi. Tulvien aiheuttamat vahingot ymp\u00e4ri maailmaa nousevat satoihin miljardeihin euroihin. Pelk\u00e4st\u00e4\u00e4n hein\u00e4kuussa 2010 Pakistanissa tapahtuneet tulvat aiheuttivat yli 7 miljardin euron vahingot.<\/p>\n<\/div>\n<p>Tulvia voi esiinty\u00e4 rannikkoalueilla tai jokien l\u00e4heisyydess\u00e4. Kun valtavat vesimassat peitt\u00e4v\u00e4t matalat alueet, ne voivat aiheuttaa valtavia aineellisia vahinkoja ja vaarantaa ihmishenki\u00e4.<\/p>\n<p>Eurooppalainen avaruusteknologia on keskeinen ase tulvien torjunnassa. Ensimm\u00e4isen puolustuslinjan muodostavat Meteosat- ja MetOp-s\u00e4\u00e4satelliitit. Ne kuvaavat kehittyvi\u00e4 myrskyj\u00e4rjestelmi\u00e4 ja mahdollistavat tarkat tuuli- ja sateennusteet.<\/p>\n<p>Tavalliset kamerat pystyv\u00e4t kuvaamaan tulvia p\u00e4iv\u00e4nvalossa, kun taivas on selke\u00e4. Tulvat tapahtuvat kuitenkin yleens\u00e4 pilvipeitteen alla.<\/p>\n<figure class=\"wp-block-image size-large\" data-width=\"1384\" data-credit=\"SERTIT\" data-detail-url=\"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2004\/09\/Elbe_flood2\" 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\/esa_multimedia\/images\/2004\/09\/elbe_flood2\/17881438-2-eng-GB\/Elbe_flood.jpg\" alt=\"Elbe flood\"><\/figure>\n<p>ESAn Envisat- ja ERS-2-avaruusaluksissa on tutka-laitteita, jotka pystyv\u00e4t n\u00e4kem\u00e4\u00e4n pilvien l\u00e4pi sek\u00e4 p\u00e4iv\u00e4ll\u00e4 ett\u00e4 y\u00f6ll\u00e4. Niiden avulla saadaan tarkkoja maank\u00e4ytt\u00f6karttoja tulvialueista, joista k\u00e4y ilmi, onko vesi peitt\u00e4nyt peltoja, mets\u00e4maata vai rakennettuja alueita.<\/p>\n<p>Tutkatiedot voivat jopa osoittaa, kuinka paljon vett\u00e4 on imeytynyt maaper\u00e4\u00e4n ja onko \u201csieni\u201d t\u00e4ynn\u00e4. Aiemmista tapahtumista saatujen satelliittitietojen avulla on my\u00f6s mahdollista varautua tuleviin tulviin.<\/p>","protected":false},"excerpt":{"rendered":"<p>Flooding is the world\u2019s most expensive type of natural disaster. The cost of global flood damage is hundreds of billions of euros. The Pakistan floods of July 2010 alone caused [&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\/2000\/10\/floods_in_ivrea_italy2\/17866045-3-eng-GB\/Floods_in_Ivrea_Italy.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\/2000\/10\/Floods_in_Ivrea_Italy2","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":[42,10,59],"tags":[2],"panel":[],"language":[],"age":[],"duration":[],"resource_type":[],"audience":[],"wf_post_folders":[],"class_list":["post-942","post","type-post","status-publish","format-standard","hentry","category-earth","category-learn","category-natural-disasters","tag-background-article"],"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/posts\/942","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=942"}],"version-history":[{"count":4,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/posts\/942\/revisions"}],"predecessor-version":[{"id":4752,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/posts\/942\/revisions\/4752"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/media?parent=942"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/categories?post=942"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/tags?post=942"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/panel?post=942"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/language?post=942"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/age?post=942"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/duration?post=942"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/resource_type?post=942"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/audience?post=942"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/wf_post_folders?post=942"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}