{"id":436,"date":"2017-07-10T08:40:00","date_gmt":"2017-07-10T06:40:00","guid":{"rendered":"https:\/\/kids.esa.int\/esa_satellites_see_giant_iceberg_ready_to_break_free\/"},"modified":"2026-10-08T00:28:11","modified_gmt":"2026-10-07T22:28:11","slug":"esa_satellites_see_giant_iceberg_ready_to_break_free","status":"publish","type":"post","link":"https:\/\/kids.esa.int\/fi\/esa_satellites_see_giant_iceberg_ready_to_break_free\/","title":{"rendered":"ESA:n satelliitit havaitsevat j\u00e4ttim\u00e4isen j\u00e4\u00e4vuoren, joka on irtoamassa"},"content":{"rendered":"<div class=\"lede\">\n<p>Antarktikalle on syntynyt l\u00e4hes 200 km pitk\u00e4 syv\u00e4 halkeama, jonka seurauksena valtava j\u00e4\u00e4lohkare on j\u00e4\u00e4nyt vain h\u00e4din tuskin kiinni j\u00e4\u00e4hyllyyn. Pian halkeama irrottaa j\u00e4\u00e4lohkareen kokonaan, jolloin se ajautuu merelle ja muodostaa yhden kaikkien aikojen suurimmista j\u00e4\u00e4vuorista!<\/p>\n<\/div>\n<figure class=\"wp-block-image size-large\" data-width=\"1920\" data-credit=\"ESA\/AOES Medialab\" data-detail-url=\"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2017\/07\/CryoSat_is_used_to_measure_the_changing_thickness_of_ice_on_Earth\" 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\/2017\/07\/cryosat_is_used_to_measure_the_changing_thickness_of_ice_on_earth\/18247401-2-eng-GB\/CryoSat_is_used_to_measure_the_changing_thickness_of_ice_on_Earth.jpg\" alt=\"CryoSat is used to measure the changing thickness of ice on Earth\"><figcaption>CryoSat-satelliittia k\u00e4ytet\u00e4\u00e4n mittaamaan maapallon j\u00e4\u00e4n paksuuden muutoksia<\/figcaption><\/figure>\n<p>ESAn tutkijat ovat seuranneet ilmi\u00f6t\u00e4 CryoSat-nimisen satelliitin sek\u00e4 Sentinel-1A- ja 1B-nimisten satelliittien avulla. N\u00e4ist\u00e4 satelliiteista ker\u00e4tyt tiedot osoittavat, ett\u00e4 j\u00e4\u00e4vuori tulee sis\u00e4lt\u00e4m\u00e4\u00e4n uskomattomat 1155 kuutiokilometri\u00e4 j\u00e4\u00e4t\u00e4! Se kohoaa noin 30 metri\u00e4 vedenpinnan yl\u00e4puolelle, mutta kuten mink\u00e4 tahansa j\u00e4\u00e4vuoren kohdalla, suurin osa siit\u00e4 on itse asiassa veden alla \u2013 jopa yli 200 metrin syvyydess\u00e4!<\/p>\n<figure class=\"wp-block-image size-large\" data-width=\"1920\" data-credit=\"ESA\u2013Pierre Carril\" data-detail-url=\"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2017\/07\/Sentinel_satellites_watch_over_Earth\" 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\/2017\/07\/sentinel_satellites_watch_over_earth\/18250879-2-eng-GB\/Sentinel_satellites_watch_over_Earth.jpg\" alt=\"Sentinel satellites watch over Earth\"><figcaption>Sentinel-satelliitit valvovat maapalloa<\/figcaption><\/figure>\n<p>Vaikka onkin varsin tavallista, ett\u00e4 Etel\u00e4mantereen j\u00e4\u00e4st\u00e4 muodostuu j\u00e4\u00e4vuoria, t\u00e4m\u00e4 on huomattavasti suurempi kuin useimmat muut. Se on itse asiassa niin suuri, ett\u00e4 se voi olla vaaraksi aluksille, joten sen liikkumista merell\u00e4 on seurattava. T\u00e4m\u00e4 voi osoittautua vaikeaksi, sill\u00e4 j\u00e4\u00e4vuori saattaa hajota moniksi palasiksi, joista jokainen on vaarallinen. ESA:n satelliitit pit\u00e4v\u00e4t kuitenkin sit\u00e4 silm\u00e4ll\u00e4, mist\u00e4 kaikki l\u00e4hist\u00f6ll\u00e4 purjehtivat ovat varmasti kiitollisia!<\/p>\n<p>CryoSat-satelliitti on suunniteltu auttamaan meit\u00e4 ymm\u00e4rt\u00e4m\u00e4\u00e4n paremmin, miten maapallon j\u00e4\u00e4peite muuttuu, osittain ilmastonmuutoksen seurauksena. Sentinel-satelliitit ottavat kuvia ja ker\u00e4\u00e4v\u00e4t tietoa maapallosta, mik\u00e4 auttaa meit\u00e4 huolehtimaan kotimaapallostamme. Yhdess\u00e4 ne ovat tehokkaita v\u00e4lineit\u00e4 t\u00e4llaisen j\u00e4\u00e4vuoren muodostumisen kaltaisten ilmi\u00f6iden tutkimiseen.<\/p>\n<p><b>Mielenkiintoinen fakta:<\/b> Sentinel-satelliitit hy\u00f6dynt\u00e4v\u00e4t edistyksellist\u00e4 tutkakuvantamistekniikkaa, jonka avulla ne pystyv\u00e4t ottamaan kuvia jopa paksujen pilvien l\u00e4pi!<\/p>","protected":false},"excerpt":{"rendered":"<p>A deep crack almost 200km long has appeared in Antarctica, leaving a huge chunk of ice barely connected to its ice shelf. Before long the crack will completely separate the [&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\/2017\/07\/this_iceberg_will_be_one_of_the_biggest_ever_seen\/17911750-2-eng-GB\/This_iceberg_will_be_one_of_the_biggest_ever_seen.jpg","esa_banner_description":"This iceberg will be one of the biggest ever seen","esa_banner_credit":"University of Edinburgh\u2013N. 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