{"id":933,"date":"2004-12-03T10:14:00","date_gmt":"2004-12-03T09:14:00","guid":{"rendered":"https:\/\/kids.esa.int\/volcanoes\/"},"modified":"2026-10-08T00:33:56","modified_gmt":"2026-10-07T22:33:56","slug":"volcanoes","status":"publish","type":"post","link":"https:\/\/kids.esa.int\/fi\/volcanoes\/","title":{"rendered":"Tulivuoret"},"content":{"rendered":"<div class=\"lede\">\n<p>Aktiivisia tulivuoria on noin 1 500, joista noin 50 purkautuu vuosittain. Suurin osa n\u00e4ist\u00e4 tulivuorista sijaitsee Tyynenmeren ymp\u00e4rill\u00e4 \u2013 vy\u00f6hykkeell\u00e4, jota kutsutaan Tyynenmeren \u201ctulirenkaaksi\u201d. My\u00f6s Euroopassa on omat tulivuorensa, kuten Etna ja Vesuvius, jotka ovat purkautuneet useita kertoja historian aikana.<\/p>\n<\/div>\n<p>Ainakin 500 miljoonaa ihmist\u00e4 asuu aktiivisen tulivuoren l\u00e4heisyydess\u00e4. Kun tulivuori purkautuu, l\u00e4hialueet voivat peitty\u00e4 tuhkalla ja tulikuumalla laavalla.<\/p>\n<p>Pellot ja rakennukset voivat j\u00e4\u00e4d\u00e4 maan alle. Myrkylliset kaasut, hehkuvat tuhkapilvet tai mutavirrat voivat tappaa kaikki niiden tielle joutuvat. Onneksi satelliitit auttavat nyky\u00e4\u00e4n tunnistamaan vaarallisimmat tulivuoret.<\/p>\n<figure class=\"wp-block-image size-natural\" data-width=\"244\" data-credit=\"AP Photo\/Antonio Calanni\" data-detail-url=\"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2002\/11\/Sicily_s_Etna_in_early_November2\" 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\/2002\/11\/sicily_s_etna_in_early_november2\/17863899-3-eng-GB\/Sicily_s_Etna_in_early_November.jpg\" alt=\"Sicily&#x27;s Etna in early November\"><figcaption>Sisilian Etna marraskuun alussa<\/figcaption><\/figure>\n<p>ESAn Envisat- ja ERS-2-satelliitit tutkivat tulivuoria monin eri tavoin. Kamerat kuvaavat laavavirtauksia ja tuhkapilvi\u00e4. Infrapunalaitteet havaitsevat pintaan nousevan kuuman laavan.<\/p>\n<p>Tutka pystyy havaitsemaan tulivuoren \u201chengityksen\u201d, kun sula kivi liikkuu sen sis\u00e4ll\u00e4. Jo muutaman millimetrin suuruinen pinnan kohoaminen voi paljastaa paineen kertymisen ennen purkausta. Muut anturit tunnistavat ilmaan vapautuvat kaasut ja hiukkaset.<\/p>\n<p>T\u00e4llaiset tiedot pelastavat ihmishenki\u00e4 ja auttavat ennustamaan, milloin seuraava purkaus tapahtuu. Satelliittikuvat vahingoittuneista alueista auttavat my\u00f6s pelastus- ja j\u00e4lleenrakennustoimissa.<\/p>","protected":false},"excerpt":{"rendered":"<p>There are about 1,500 active volcanoes, with 50 or so erupting each year. Most of these volcanoes are found around the Pacific Ocean \u2013 a belt known as the Pacific [&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\/2002\/12\/etna_-_real_image_1_-_december_20022\/17864232-3-eng-GB\/Etna_-_real_image_1_-_december_2002.jpg","esa_banner_description":"Mount Etna","esa_banner_credit":"Courtesy of P.Chastanet","esa_banner_licence":"ESA Standard Licence","esa_banner_detail_url":"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2002\/12\/Etna_-_real_image_1_-_december_20022","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-933","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\/933","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=933"}],"version-history":[{"count":4,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/posts\/933\/revisions"}],"predecessor-version":[{"id":4745,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/posts\/933\/revisions\/4745"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/media?parent=933"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/categories?post=933"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/tags?post=933"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/panel?post=933"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/language?post=933"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/age?post=933"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/duration?post=933"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/resource_type?post=933"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/audience?post=933"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/wf_post_folders?post=933"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}