{"id":877,"date":"2005-06-30T09:24:00","date_gmt":"2005-06-30T07:24:00","guid":{"rendered":"https:\/\/kids.esa.int\/esa_s_gravity_explorer\/"},"modified":"2026-10-08T00:33:17","modified_gmt":"2026-10-07T22:33:17","slug":"esa_s_gravity_explorer","status":"publish","type":"post","link":"https:\/\/kids.esa.int\/sl\/esa_s_gravity_explorer\/","title":{"rendered":"Gravity Explorer agencije ESA"},"content":{"rendered":"
\n

Po podatkih nove \u0161tudije agencije ESA je potres na Sumatri 26. decembra 2004 ne le opusto\u0161il ogromno obmo\u010dje, temve\u010d je tudi nekoliko spremenil gravitacijo tega obmo\u010dja.<\/p>\n<\/div>\n

Ko se je med potresom dno Indijskega oceana premaknilo vzdol\u017e 1000 km dolge prelomne \u010drte, je nastal 6 metrov visok prag. Ta ogromen premik kamnine je v trenutku spremenil lokalno gravitacijo.<\/p>\n

To ni ni\u010d nenavadnega. Zemljevidi, izdelani na podlagi satelitskih podatkov, ka\u017eejo, da se gravitacijska sila razlikuje od kraja do kraja. Eden od razlogov za to je vrtenje Zemlje. Medtem ko se planet vrti, se na ekvatorju izbo\u010di navzven. Ker je Zemlja na ekvatorju \u0161ir\u0161a za 42 km, je gravitacijska sila tam \u0161ibkej\u0161a kot na polih.<\/p>\n

Vplivajo tudi visoke gore, globoki oceanski jarki in razli\u010dne vrste kamnin v notranjosti Zemlje. Tudi plime, oceanski tokovi in taljenje ledenih pokrovov povzro\u010dajo nihanje vrednosti gravitacije.<\/p>\n

\"Artist's
Umetni\u0161ka upodobitev satelita GOCE<\/figcaption><\/figure>\n

Trenutno je tak\u0161ne majhne spremembe gravitacijskega polja te\u017eko izmeriti, vendar se bo to spremenilo z lansiranjem satelitov Gravity Field and Ocean Circulation Explorer (GOCE) agencije ESA prihodnje leto.<\/p>\n

Ob\u010dutljivo vesoljsko plovilo bo zelo podrobno preu\u010devalo gravitacijo. Ko bo preletelo obmo\u010dja z mo\u010dnej\u0161im in \u0161ibkej\u0161im gravitacijskim privlakom, se bo plovilo gibalo gor in dol, njegovi instrumenti pa bodo bele\u017eili spreminjajo\u010de se gravitacijsko polje vzdol\u017e njegove poti.<\/p>\n

To bo znanstvenikom omogo\u010dilo, da izmerijo, koliko snovi se premika \u2013 bodisi nenadoma ob potresu bodisi postopoma, kot na primer pri taljenju ledenega pokrova. Ti podatki bodo celo pomagali razkrivati spremembe v oceanski cirkulaciji, ki so povezane s podnebnimi spremembami.<\/p>","protected":false},"excerpt":{"rendered":"

According to a new ESA study, the Sumatran earthquake of 26 December 2004 not only devastated a huge area, but it slightly altered the gravity of that area. When the […]<\/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\/2005\/04\/ers-2_composite_highlighting_tsunami_damage3\/17891576-2-eng-GB\/ERS-2_composite_highlighting_tsunami_damage.jpg","esa_banner_description":"ERS-2 composite highlighting tsunami damage","esa_banner_credit":"ESA","esa_banner_licence":"ESA Standard Licence","esa_banner_detail_url":"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2005\/04\/ERS-2_composite_highlighting_tsunami_damage3","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":[],"panel":[],"language":[],"age":[],"duration":[],"resource_type":[],"audience":[],"wf_post_folders":[],"class_list":["post-877","post","type-post","status-publish","format-standard","hentry","category-earth","category-learn","category-natural-disasters"],"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/posts\/877","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/comments?post=877"}],"version-history":[{"count":4,"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/posts\/877\/revisions"}],"predecessor-version":[{"id":4715,"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/posts\/877\/revisions\/4715"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/media?parent=877"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/categories?post=877"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/tags?post=877"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/panel?post=877"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/language?post=877"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/age?post=877"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/duration?post=877"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/resource_type?post=877"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/audience?post=877"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/wf_post_folders?post=877"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}