{"id":457,"date":"2022-08-22T04:40:57","date_gmt":"2022-08-22T04:40:57","guid":{"rendered":"https:\/\/www.lifescienceart.com\/?p=457"},"modified":"2022-08-22T04:40:57","modified_gmt":"2022-08-22T04:40:57","slug":"nasa-detects-new-crack-in-greenlands-petermann-glacier","status":"publish","type":"post","link":"https:\/\/www.lifescienceart.com\/cs\/science\/climate-science\/nasa-detects-new-crack-in-greenlands-petermann-glacier\/","title":{"rendered":"Nov\u00e1 trhlina na gr\u00f3nsk\u00e9m ledovci Petermann znepokojuje v\u011bdce"},"content":{"rendered":"

NASA detekuje novou trhlinu v gr\u00f3nsk\u00e9m ledovci Petermann<\/h2>\n\n

Prolomen\u00ed k\u00f3du: Objevuje se nov\u00e1 puklina<\/h2>\n\n

V rozs\u00e1hl\u00e9 ledov\u00e9 pustin\u011b Gr\u00f3nska se na ikonick\u00e9m ledovci Petermann objevila nov\u00e1 trhlina, kter\u00e1 vzbuzuje obavy mezi v\u011bdci. Tuto znepokojuj\u00edc\u00ed puklinu, kterou v\u011bdci objevili pomoc\u00ed satelitn\u00edch sn\u00edmk\u016f, p\u0159im\u011bla NASA k proveden\u00ed pr\u016fzkumn\u00e9ho p\u0159eletu, aby jej\u00ed existenci potvrdila a vyhodnotila jej\u00ed potenci\u00e1ln\u00ed d\u016fsledky.<\/p>\n\n

Ledovec Petermann: K\u0159ehk\u00fd ledov\u00fd jazyk<\/h2>\n\n

Ledovec Petermann se nach\u00e1z\u00ed v severoz\u00e1padn\u00edm Gr\u00f3nsku a je to mohutn\u00fd ledov\u00fd jazyk, kter\u00fd se v podob\u011b ledov\u00e9 bari\u00e9ry rozprost\u00edr\u00e1 do oce\u00e1nu. Jeho citlivost na zm\u011bny okoln\u00ed teploty vody z n\u011bj \u010din\u00ed kl\u00ed\u010dov\u00fd ukazatel zdrav\u00ed gr\u00f3nsk\u00e9ho ledovcov\u00e9ho \u0161t\u00edtu. V posledn\u00edch letech ledovec za\u017eil v\u00fdznamn\u00e9 ud\u00e1losti odlamov\u00e1n\u00ed, kdy se od n\u011bj odlomily velk\u00e9 kusy ledu a vytvo\u0159ily ledovce.<\/p>\n\n

Znepokojiv\u00fd sign\u00e1l: Trhliny a odlamov\u00e1n\u00ed<\/h2>\n\n

Objev nov\u00e9 trhliny na ledovci Petermann vzbudil obavy, proto\u017ee se nach\u00e1z\u00ed v bl\u00edzkosti st\u00e1vaj\u00edc\u00ed pukliny na v\u00fdchodn\u00ed stran\u011b ledovce. V\u011bdci se ob\u00e1vaj\u00ed, \u017ee by se tyto dv\u011b trhliny mohly nakonec spojit, co\u017e by vedlo k dal\u0161\u00edm ud\u00e1lostem odlamov\u00e1n\u00ed a potenci\u00e1ln\u00ed destabilizaci ledovce.<\/p>\n\n

Monitorovac\u00ed mise NASA: IceBridge<\/h2>\n\n

Aby bylo mo\u017en\u00e9 situaci sledovat a shrom\u00e1\u017edit v\u00edce dat, provedla operace IceBridge NASA pr\u016fzkumn\u00e9 lety a satelitn\u00ed sledov\u00e1n\u00ed gr\u00f3nsk\u00e9ho ledovcov\u00e9ho \u0161t\u00edtu. S vyu\u017eit\u00edm sou\u0159adnic poskytnut\u00fdch nizozemsk\u00fdm v\u00fdzkumn\u00edkem, kter\u00fd trhlinu p\u016fvodn\u011b objevil, IceBridge jej\u00ed existenci potvrdila a poskytla podrobn\u011bj\u0161\u00ed pohled na tuto znepokojivou puklinu.<\/p>\n\n

Co je v s\u00e1zce: Stoup\u00e1n\u00ed hladiny mo\u0159e a zm\u011bna klimatu<\/h2>\n\n

Pro ledovec Petermann a gr\u00f3nsk\u00fd ledovcov\u00fd \u0161t\u00edt jako celek je toho v s\u00e1zce hodn\u011b. Ztr\u00e1ta ledu v d\u016fsledku ud\u00e1lost\u00ed odlamov\u00e1n\u00ed p\u0159isp\u00edv\u00e1 ke zvy\u0161ov\u00e1n\u00ed hladiny mo\u0159e, co\u017e p\u0159edstavuje v\u00fdznamnou hrozbu pro pob\u0159e\u017en\u00ed komunity po cel\u00e9m sv\u011bt\u011b. Oteplov\u00e1n\u00ed oce\u00e1n\u016f a povrchov\u00fdch teplot v d\u016fsledku zm\u011bny klimatu urychluje t\u00e1n\u00ed ledovcov\u00e9ho \u0161t\u00edtu, co\u017e vede ke zv\u00fd\u0161en\u00e9mu odlamov\u00e1n\u00ed a rychlej\u0161\u00edmu stoup\u00e1n\u00ed hladiny mo\u0159e.<\/p>\n\n

Ledovcov\u00fd \u0161t\u00edt v nouzi: Ned\u00e1vn\u00e9 ztr\u00e1ty a budouc\u00ed progn\u00f3zy<\/h2>\n\n

Ned\u00e1vn\u00e9 studie uk\u00e1zaly, \u017ee gr\u00f3nsk\u00fd ledovcov\u00fd \u0161t\u00edt v posledn\u00edch letech ztratil ohromuj\u00edc\u00ed mno\u017estv\u00ed ledu. Jeden odhad nazna\u010duje, \u017ee samotn\u00fd ledovcov\u00fd \u0161t\u00edt ztratil v letech 2011 a\u017e 2014 p\u0159ibli\u017en\u011b 270 gigatun ledu, co\u017e odpov\u00edd\u00e1 objemu vody v p\u0159ibli\u017en\u011b 110 milionech olympijsk\u00fdch plaveck\u00fdch baz\u00e9n\u016f. V\u011bdci p\u0159edpov\u00eddaj\u00ed, \u017ee Gr\u00f3nsko bude s t\u00edm, jak se klima bude i nad\u00e1le m\u011bnit, ztr\u00e1cet led je\u0161t\u011b rychleji, co\u017e by mohlo potenci\u00e1ln\u011b spustit n\u00e1hl\u00e9 ud\u00e1losti t\u00e1n\u00ed, kter\u00e9 by mohly m\u00edt katastrof\u00e1ln\u00ed d\u016fsledky pro hladinu mo\u0159\u00ed.<\/p>\n\n

Monitorov\u00e1n\u00ed a v\u00fdzkum: Pochopen\u00ed m\u011bn\u00edc\u00edho se ledu<\/h2>\n\n

Mise IceBridge NASA hraje z\u00e1sadn\u00ed roli p\u0159i monitorov\u00e1n\u00ed zm\u011bn prob\u00edhaj\u00edc\u00edch v gr\u00f3nsk\u00e9m ledovcov\u00e9m \u0161t\u00edtu. Studium pohybu, tlou\u0161\u0165ky a povrchov\u00fdch rys\u016f ledovce umo\u017e\u0148uje v\u011bdc\u016fm z\u00edskat cenn\u00e9 poznatky o procesech vedouc\u00edch ke ztr\u00e1t\u011b ledu a stoup\u00e1n\u00ed hladiny mo\u0159e. Tento v\u00fdzkum je z\u00e1sadn\u00ed pro v\u00fdvoj strategi\u00ed p\u0159izp\u016fsoben\u00ed a zm\u00edr\u0148ov\u00e1n\u00ed dopad\u016f, kter\u00e9 zm\u011bna klimatu p\u0159in\u00e1\u0161\u00ed.<\/p>\n\n

Nezodpov\u011bzen\u00e9 ot\u00e1zky a budoucnost<\/h2>\n\n

P\u0159esto\u017ee objev nov\u00e9 trhliny na ledovci Petermann vzbudil obavy, z\u016fst\u00e1v\u00e1 mnoho nezodpov\u011bzen\u00fdch ot\u00e1zek. V\u011bdci st\u00e1le zkoumaj\u00ed p\u0159\u00ed\u010dinu vzniku trhliny a mo\u017enost jej\u00edho spojen\u00ed se st\u00e1vaj\u00edc\u00ed puklinou. Pr\u016fb\u011b\u017en\u00e9 sledov\u00e1n\u00ed a v\u00fdzkum budou m\u00edt z\u00e1sadn\u00ed v\u00fdznam pro pochopen\u00ed v\u00fdvoje t\u00e9to situace a jej\u00edch d\u016fsledk\u016f pro stabilitu gr\u00f3nsk\u00e9ho ledovcov\u00e9ho \u0161t\u00edtu a glob\u00e1ln\u00ed hladinu mo\u0159\u00ed.<\/p>","protected":false},"excerpt":{"rendered":"

NASA detekuje novou trhlinu v gr\u00f3nsk\u00e9m ledovci Petermann Prolomen\u00ed k\u00f3du: Objevuje se nov\u00e1 puklina V rozs\u00e1hl\u00e9 ledov\u00e9 pustin\u011b Gr\u00f3nska se na ikonick\u00e9m ledovci Petermann objevila nov\u00e1 trhlina, kter\u00e1 vzbuzuje obavy…<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[284],"tags":[1180,1179,1177,1181,473,1178,34,749],"class_list":["post-457","post","type-post","status-publish","format-standard","hentry","category-climate-science","tag-calving","tag-crack","tag-greenland","tag-icebridge","tag-nasa","tag-petermann-glacier","tag-climate-change","tag-sea-level-rise"],"_links":{"self":[{"href":"https:\/\/www.lifescienceart.com\/cs\/wp-json\/wp\/v2\/posts\/457","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.lifescienceart.com\/cs\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.lifescienceart.com\/cs\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.lifescienceart.com\/cs\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.lifescienceart.com\/cs\/wp-json\/wp\/v2\/comments?post=457"}],"version-history":[{"count":1,"href":"https:\/\/www.lifescienceart.com\/cs\/wp-json\/wp\/v2\/posts\/457\/revisions"}],"predecessor-version":[{"id":458,"href":"https:\/\/www.lifescienceart.com\/cs\/wp-json\/wp\/v2\/posts\/457\/revisions\/458"}],"wp:attachment":[{"href":"https:\/\/www.lifescienceart.com\/cs\/wp-json\/wp\/v2\/media?parent=457"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.lifescienceart.com\/cs\/wp-json\/wp\/v2\/categories?post=457"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.lifescienceart.com\/cs\/wp-json\/wp\/v2\/tags?post=457"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}