{"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\/ro\/goce_esa_s_gravity_explorer\/","title":{"rendered":"GOCE \u2013 Sonda de explorare a gravita\u021biei a ESA"},"content":{"rendered":"<div class=\"lede\">\n<p>\u0218tia\u021bi c\u0103 greutatea dumneavoastr\u0103 variaz\u0103 u\u0219or, \u00een func\u021bie de locul \u00een care locui\u021bi? Acest lucru se datoreaz\u0103 faptului c\u0103 for\u021ba gravita\u021bional\u0103 a P\u0103m\u00e2ntului variaz\u0103 de la un loc la altul. Amploarea exact\u0103 a acestor varia\u021bii este m\u0103surat\u0103 \u00een prezent de satelitul GOCE (Gravity field and steady-state Ocean Circulation Explorer) al Agen\u021biei Spa\u021biale Europene (ESA).<\/p>\n<\/div>\n<p>Lansat\u0103 \u00een martie 2009, GOCE este prima dintre misiunile \u2018Earth Explorer\u2019 ale ESA. Misiunea sa este de a furniza cele mai bune informa\u021bii disponibile p\u00e2n\u0103 \u00een prezent cu privire la \u201ec\u00e2mpul gravita\u021bional\u201d al planetei.<\/p>\n<p>Gravita\u021bia este for\u021ba care ne \u021bine pe to\u021bi pe P\u0103m\u00e2nt. F\u0103r\u0103 ea, to\u021bi oamenii (\u0219i toate lucrurile) care nu ar fi fixa\u021bi ar pluti \u00een spa\u021biu. Cu toate acestea, atrac\u021bia gravita\u021bional\u0103 a P\u0103m\u00e2ntului variaz\u0103 de la un loc la altul. Acest lucru se datoreaz\u0103, \u00een parte, faptului c\u0103 planeta nu este perfect rotund\u0103 \u2013 este u\u0219or aplatizat\u0103 la poli. Gravita\u021bia este influen\u021bat\u0103, de asemenea, de mun\u021bii \u00eenal\u021bi, de \u0219an\u021burile oceanice ad\u00e2nci, precum \u0219i de grosimea \u0219i densitatea straturilor de roc\u0103.<\/p>\n<figure class=\"wp-block-image size-large\" data-width=\"1200\" data-credit=\"ESA\" data-detail-url=\"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2008\/05\/Earth_s_geoid_as_seen_by_GOCE2\" 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\/2008\/05\/earth_s_geoid_as_seen_by_goce2\/17878996-2-eng-GB\/Earth_s_geoid_as_seen_by_GOCE.jpg\" alt=\"Earth&#x27;s geoid as seen by GOCE\"><figcaption>Geoidul P\u0103m\u00e2ntului, a\u0219a cum este observat de satelitul GOCE<\/figcaption><\/figure>\n<p>M\u0103surarea varia\u021biilor infime ale for\u021bei gravita\u021bionale este foarte dificil\u0103, mai ales din spa\u021biu. Pentru a detecta cel mai puternic semnal gravita\u021bional posibil, GOCE urmeaz\u0103 o orbit\u0103 joas\u0103, la 255 km deasupra P\u0103m\u00e2ntului. Pe m\u0103sur\u0103 ce trece peste regiuni cu for\u021b\u0103 gravita\u021bional\u0103 mai puternic\u0103 sau mai slab\u0103, nava spa\u021bial\u0103 se mi\u0219c\u0103 \u00een sus \u0219i \u00een jos, iar instrumentele sale \u00eenregistreaz\u0103 aceste schimb\u0103ri de-a lungul traiectoriei sale.<\/p>\n<p>Satelitul GOCE, \u00een form\u0103 de s\u0103geat\u0103, este, de asemenea, extrem de stabil, neav\u00e2nd niciuna dintre piesele mobile care se reg\u0103sesc adesea la alte nave spa\u021biale. Un sistem avansat de control al orient\u0103rii asigur\u0103 faptul c\u0103 m\u0103sur\u0103torile sale gravita\u021bionale nu sunt influen\u021bate de nicio mi\u0219care a satelitului.<\/p>\n<p>De ce este important\u0103 m\u0103surarea precis\u0103 a gravita\u021biei? Datele furnizate de GOCE sunt utilizate pentru a studia curen\u021bii oceanici, varia\u021biile nivelului m\u0103rii, altitudinea suprafe\u021bei terestre \u0219i ad\u00e2ncimea bazei mun\u021bilor. De asemenea, acestea au numeroase aplica\u021bii practice, de exemplu \u00een industria construc\u021biilor.<\/p>","protected":false},"excerpt":{"rendered":"<p>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 [&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\/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\/ro\/wp-json\/wp\/v2\/posts\/897","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/kids.esa.int\/ro\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/kids.esa.int\/ro\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/kids.esa.int\/ro\/wp-json\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/kids.esa.int\/ro\/wp-json\/wp\/v2\/comments?post=897"}],"version-history":[{"count":5,"href":"https:\/\/kids.esa.int\/ro\/wp-json\/wp\/v2\/posts\/897\/revisions"}],"predecessor-version":[{"id":4727,"href":"https:\/\/kids.esa.int\/ro\/wp-json\/wp\/v2\/posts\/897\/revisions\/4727"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/ro\/wp-json\/wp\/v2\/media?parent=897"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/ro\/wp-json\/wp\/v2\/categories?post=897"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/ro\/wp-json\/wp\/v2\/tags?post=897"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/ro\/wp-json\/wp\/v2\/panel?post=897"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/ro\/wp-json\/wp\/v2\/language?post=897"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/ro\/wp-json\/wp\/v2\/age?post=897"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/ro\/wp-json\/wp\/v2\/duration?post=897"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/ro\/wp-json\/wp\/v2\/resource_type?post=897"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/ro\/wp-json\/wp\/v2\/audience?post=897"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/ro\/wp-json\/wp\/v2\/wf_post_folders?post=897"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}