{"id":897,"date":"2008-06-17T09:24:00","date_gmt":"2008-06-17T07:24:00","guid":{"rendered":"https:\/\/kids.esa.int\/goce_esa_s_gravity_explorer\/"},"modified":"2026-10-08T00:33:31","modified_gmt":"2026-10-07T22:33:31","slug":"goce_esa_s_gravity_explorer","status":"publish","type":"post","link":"https:\/\/kids.esa.int\/et\/goce_esa_s_gravity_explorer\/","title":{"rendered":"GOCE \u2013 ESA gravitatsiooniuuringute satelliit"},"content":{"rendered":"
\n

Kas teadsite, et teie kaal on veidi erinev s\u00f5ltuvalt sellest, kus te elate? Seda seet\u00f5ttu, et Maa gravitatsioonij\u00f5ud varieerub kohati. Just seda, kui palju gravitatsioonij\u00f5ud erineb, m\u00f5\u00f5dab praegu ESA satelliit Gravity field and steady-state Ocean Circulation Explorer (GOCE).<\/p>\n<\/div>\n

2009. aasta m\u00e4rtsis orbiidile viidud GOCE on ESA esimene Earth Explorer-missioon. Selle \u00fclesanne on pakkuda seni parimat teavet planeedi \u2018gravitatsiooniv\u00e4lja\u2019 kohta.<\/p>\n

Raskusj\u00f5ud on j\u00f5ud, mis hoiab meid k\u00f5iki Maal. Ilma selleta h\u00f5ljuksid k\u00f5ik (ja k\u00f5ik asjad), mis poleks kinnitatud, kosmosesse. Siiski varieerub Maa raskusj\u00f5ud kohati. See on osaliselt tingitud sellest, et planeet ei ole t\u00e4iesti \u00fcmmargune \u2013 see on pooluste juures veidi lapik. Raskusj\u00f5ule avaldavad m\u00f5ju ka k\u00f5rged m\u00e4ed, s\u00fcgavad ookeanil\u00f5hed ning kivimikihtide paksus ja tihedus.<\/p>\n

\"Earth's
GOCE poolt vaadeldud Maa geoid<\/figcaption><\/figure>\n

Gravitatsioonij\u00f5u pisikeste k\u00f5ikumiste m\u00f5\u00f5tmine on v\u00e4ga keeruline, eriti kosmosest. Et tuvastada v\u00f5imalikult tugev gravitatsioonisignaal, liigub GOCE madalal orbiidil, 255 km k\u00f5rgusel Maa kohal. Kui kosmoselaev l\u00e4bib piirkondi, kus gravitatsioonij\u00f5ud on tugevam v\u00f5i n\u00f5rgem, liigub see \u00fcles-alla ning selle m\u00f5\u00f5teriistad registreerivad need muutused lennutrajektoori jooksul.<\/p>\n

Noolikujuline GOCE on ka \u00e4\u00e4rmiselt stabiilne, kuna sellel puuduvad liikuvad osad, mida teistel kosmoses\u00f5idukitel sageli n\u00e4ha v\u00f5ib. T\u00e4iustatud asendi juhtimiss\u00fcsteem tagab, et satelliidi liikumine ei m\u00f5juta selle gravitatsioonim\u00f5\u00f5tmisi.<\/p>\n

Miks on gravitatsiooni t\u00e4pne m\u00f5\u00f5tmine oluline? GOCE andmeid kasutatakse ookeanivoolude, muutuva merepinna taseme, maapinna k\u00f5rguse ja m\u00e4etippude s\u00fcgavuse uurimiseks. Sellel on ka arvukalt praktilisi rakendusi, n\u00e4iteks ehitussektoris.<\/p>","protected":false},"excerpt":{"rendered":"

Did you know that your weight is slightly different, depending on where you live? This is because the pull of Earth\u2019s gravity varies from place to place. Precisely how much […]<\/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\/2008\/03\/sunny_side_of_goce3\/17887395-2-eng-GB\/Sunny_side_of_GOCE.jpg","esa_banner_description":"Sunny side of GOCE","esa_banner_credit":"ESA\u2013AOES-Medialab","esa_banner_licence":"ESA Standard Licence","esa_banner_detail_url":"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2008\/03\/Sunny_side_of_GOCE3","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":[42,10,66],"tags":[],"panel":[],"language":[],"age":[],"duration":[],"resource_type":[],"audience":[],"wf_post_folders":[],"class_list":["post-897","post","type-post","status-publish","format-standard","hentry","category-earth","category-learn","category-water-world"],"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/kids.esa.int\/et\/wp-json\/wp\/v2\/posts\/897","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/kids.esa.int\/et\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/kids.esa.int\/et\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/kids.esa.int\/et\/wp-json\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/kids.esa.int\/et\/wp-json\/wp\/v2\/comments?post=897"}],"version-history":[{"count":5,"href":"https:\/\/kids.esa.int\/et\/wp-json\/wp\/v2\/posts\/897\/revisions"}],"predecessor-version":[{"id":4727,"href":"https:\/\/kids.esa.int\/et\/wp-json\/wp\/v2\/posts\/897\/revisions\/4727"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/et\/wp-json\/wp\/v2\/media?parent=897"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/et\/wp-json\/wp\/v2\/categories?post=897"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/et\/wp-json\/wp\/v2\/tags?post=897"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/et\/wp-json\/wp\/v2\/panel?post=897"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/et\/wp-json\/wp\/v2\/language?post=897"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/et\/wp-json\/wp\/v2\/age?post=897"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/et\/wp-json\/wp\/v2\/duration?post=897"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/et\/wp-json\/wp\/v2\/resource_type?post=897"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/et\/wp-json\/wp\/v2\/audience?post=897"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/et\/wp-json\/wp\/v2\/wf_post_folders?post=897"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}