{"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\/cs\/goce_esa_s_gravity_explorer\/","title":{"rendered":"GOCE \u2013 gravita\u010dn\u00ed sonda agentury ESA"},"content":{"rendered":"
\n

V\u011bd\u011bli jste, \u017ee va\u0161e hmotnost se m\u00edrn\u011b li\u0161\u00ed v z\u00e1vislosti na tom, kde \u017eijete? Je to proto, \u017ee s\u00edla zemsk\u00e9 gravitace se v jednotliv\u00fdch m\u00edstech li\u0161\u00ed. Jak p\u0159esn\u011b se gravitace li\u0161\u00ed, nyn\u00ed m\u011b\u0159\u00ed dru\u017eice GOCE (Gravity field and steady-state Ocean Circulation Explorer) Evropsk\u00e9 kosmick\u00e9 agentury (ESA).<\/p>\n<\/div>\n

Sonda GOCE, vypu\u0161t\u011bn\u00e1 v b\u0159eznu 2009, je prvn\u00ed z mis\u00ed programu Earth Explorer Evropsk\u00e9 kosmick\u00e9 agentury (ESA). Jej\u00edm \u00fakolem je poskytovat dosud nejp\u0159esn\u011bj\u0161\u00ed informace o \u2018gravita\u010dn\u00edm poli\u2019 Zem\u011b.<\/p>\n

Gravitace je s\u00edla, kter\u00e1 n\u00e1s v\u0161echny dr\u017e\u00ed na Zemi. Bez n\u00ed by ka\u017ed\u00fd (a v\u0161echno), co by nebylo p\u0159ipout\u00e1no, odplulo do vesm\u00edru. Gravita\u010dn\u00ed s\u00edla Zem\u011b se v\u0161ak v jednotliv\u00fdch m\u00edstech li\u0161\u00ed. \u010c\u00e1ste\u010dn\u011b je to zp\u016fsobeno t\u00edm, \u017ee planeta nen\u00ed dokonale kulat\u00e1 \u2013 na p\u00f3lech je m\u00edrn\u011b zplo\u0161t\u011bl\u00e1. Gravitaci ovliv\u0148uj\u00ed tak\u00e9 vysok\u00e9 hory, hlubok\u00e9 oce\u00e1nsk\u00e9 p\u0159\u00edkopy a tlou\u0161\u0165ka a hustota horninov\u00fdch vrstev.<\/p>\n

\"Earth's
Geoid Zem\u011b zachycen\u00fd sondou GOCE<\/figcaption><\/figure>\n

M\u011b\u0159en\u00ed nepatrn\u00fdch odchylek v gravita\u010dn\u00edm poli je velmi obt\u00ed\u017en\u00e9, zejm\u00e9na z vesm\u00edru. Aby bylo mo\u017en\u00e9 zachytit co nejsiln\u011bj\u0161\u00ed gravita\u010dn\u00ed sign\u00e1l, ob\u00edh\u00e1 sonda GOCE na n\u00edzk\u00e9 ob\u011b\u017en\u00e9 dr\u00e1ze ve v\u00fd\u0161ce 255 km nad Zem\u00ed. P\u0159i pr\u016fletu nad oblastmi se siln\u011bj\u0161\u00edm \u010di slab\u0161\u00edm gravita\u010dn\u00edm polem se sonda pohybuje nahoru a dol\u016f a jej\u00ed p\u0159\u00edstroje zaznamen\u00e1vaj\u00ed tyto zm\u011bny pod\u00e9l jej\u00ed dr\u00e1hy.<\/p>\n

Satelit GOCE ve tvaru \u0161ipky je nav\u00edc mimo\u0159\u00e1dn\u011b stabiln\u00ed, nebo\u0165 neobsahuje \u017e\u00e1dn\u00e9 pohybliv\u00e9 sou\u010d\u00e1sti, jak\u00e9 se \u010dasto vyskytuj\u00ed u jin\u00fdch kosmick\u00fdch lod\u00ed. Pokro\u010dil\u00fd syst\u00e9m \u0159\u00edzen\u00ed polohy zaji\u0161\u0165uje, \u017ee m\u011b\u0159en\u00ed gravitace nejsou ovlivn\u011bna \u017e\u00e1dn\u00fdm pohybem satelitu.<\/p>\n

Pro\u010d je p\u0159esn\u00e9 m\u011b\u0159en\u00ed gravitace d\u016fle\u017eit\u00e9? \u00dadaje z dru\u017eice GOCE se vyu\u017e\u00edvaj\u00ed ke studiu oce\u00e1nsk\u00fdch proud\u016f, zm\u011bn hladiny mo\u0159e, v\u00fd\u0161ky zemsk\u00e9ho povrchu a hloubky ko\u0159en\u016f hor. Maj\u00ed tak\u00e9 \u0159adu praktick\u00fdch vyu\u017eit\u00ed, nap\u0159\u00edklad ve stavebnictv\u00ed.<\/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\/cs\/wp-json\/wp\/v2\/posts\/897","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/kids.esa.int\/cs\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/kids.esa.int\/cs\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/kids.esa.int\/cs\/wp-json\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/kids.esa.int\/cs\/wp-json\/wp\/v2\/comments?post=897"}],"version-history":[{"count":5,"href":"https:\/\/kids.esa.int\/cs\/wp-json\/wp\/v2\/posts\/897\/revisions"}],"predecessor-version":[{"id":4727,"href":"https:\/\/kids.esa.int\/cs\/wp-json\/wp\/v2\/posts\/897\/revisions\/4727"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/cs\/wp-json\/wp\/v2\/media?parent=897"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/cs\/wp-json\/wp\/v2\/categories?post=897"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/cs\/wp-json\/wp\/v2\/tags?post=897"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/cs\/wp-json\/wp\/v2\/panel?post=897"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/cs\/wp-json\/wp\/v2\/language?post=897"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/cs\/wp-json\/wp\/v2\/age?post=897"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/cs\/wp-json\/wp\/v2\/duration?post=897"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/cs\/wp-json\/wp\/v2\/resource_type?post=897"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/cs\/wp-json\/wp\/v2\/audience?post=897"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/cs\/wp-json\/wp\/v2\/wf_post_folders?post=897"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}