{"id":697559,"date":"2026-06-12T15:37:03","date_gmt":"2026-06-12T15:37:03","guid":{"rendered":"https:\/\/microscopemedia.com\/?p=697559"},"modified":"2026-06-12T15:37:03","modified_gmt":"2026-06-12T15:37:03","slug":"raspunsul-surprinzator-al-ghetarilor-din-alaska-la-cresterea-temperaturilor","status":"publish","type":"post","link":"https:\/\/microscopemedia.com\/?p=697559","title":{"rendered":"R\u0103spunsul surprinz\u0103tor al ghe\u021barilor din Alaska la cre\u0219terea temperaturilor"},"content":{"rendered":"
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\u201eExtinderea topirii ghe\u021barilor \u0219i limitele de z\u0103pad\u0103 sunt indicatori indirecti ai echilibrului masic al ghe\u021barilor\u201d, a declarat Albin Wells, care a condus studiul.<\/span><\/p>\n

Bilan\u021bul masic al ghe\u021barilor se refer\u0103 la diferen\u021ba dintre cantitatea de z\u0103pad\u0103 \u0219i ghea\u021b\u0103 acumulat\u0103 de un ghe\u021bar \u0219i c\u00e2t\u0103 pierde \u00een timp.<\/span><\/p>\n

Descoperirile pot anticipa topirile viitoare<\/h2>\n

\u201eAceste corela\u021bii cu temperatura \u00eencep s\u0103 ofere o idee despre c\u00e2t de mult se poate anticipa topirea sau retragerea liniei de z\u0103pad\u0103<\/a> \u00een climatele viitoare, mai calde, din regiune\u201d, a ad\u0103ugat Wells.<\/p>\n

\u201e\u00cen datele optice, linia z\u0103pezii poate fi foarte greu de observat\u201d, a spus Mark Fahnestock, co-autor al studiului. \u201eDac\u0103 \u00eent\u00e2rzii o zi s\u0103 faci fotografia, este posibil s\u0103 fi nins pe \u00eentregul ghe\u021bar \u0219i s\u0103 nu po\u021bi vedea unde este ghea\u021ba goal\u0103 dedesubt \u0219i unde este z\u0103pada \u0219i firnul deasupra\u201d, potrivit aceleia\u0219i surse.<\/p>\n

Cercet\u0103torii au examinat \u00eendeaproape un val intens de c\u0103ldur\u0103 din Alaska. Acesta a durat \u00eentre 23 iunie \u0219i 10 iulie 2019. Evenimentul a afectat fiecare regiune glaciar\u0103 a statului, cu excep\u021bia lan\u021bului muntos Brooks.<\/p>\n

Conform studiului, c\u0103ldura extrem\u0103 a \u00eempins limitele de z\u0103pad\u0103 ale ghe\u021barilor cu aproape 106 metri mai sus. \u00centr-un an obi\u0219nuit, limitele de z\u0103pad\u0103 nu atingeau aceste altitudini dec\u00e2t dup\u0103 aproximativ dou\u0103 luni.<\/p>\n

Prin urmare, ghea\u021ba goal\u0103 \u0219i firnul au r\u0103mas expuse pentru perioade mai lungi. Astfel, a crescut pierderea general\u0103 de ghea\u021b\u0103.<\/p>\n

Acest lucru eviden\u021biaz\u0103 \u201esensibilitatea ghe\u021barilor la variabilitatea climatic\u0103 pe termen scurt\u201d, potrivit autorilor studiului.<\/p>\n

Studiul a identificat, de asemenea, diferen\u021be consistente \u00eentre ghe\u021barii situa\u021bi pe versantul de coast\u0103 al lan\u021burilor muntoase \u0219i cei din interiorul continentului.<\/p>\n

\u201eO descoperire important\u0103\u201d<\/h2>\n

Wells a spus c\u0103 num\u0103rul de zile de topire a ghe\u021bii a variat \u00eentre cele dou\u0103 grupuri. Aceasta sugereaz\u0103 c\u0103 ele reac\u021bioneaz\u0103 diferit la condi\u021biile de mediu, chiar dac\u0103 multe pierd ghea\u021b\u0103 \u00een rate \u00een general similare.<\/p>\n

\u201eAceasta este o descoperire important\u0103\u201d, a spus Wells. \u201eSe confirm\u0103 cuno\u0219tin\u021bele anterioare conform c\u0103rora ghe\u021barii din Alaska, de pe coasta mun\u021bilor, se topesc mai mult vara \u0219i se acumuleaz\u0103 mai mult iarna dec\u00e2t cei de pe partea continental\u0103 a lan\u021burilor muntoase\u201d.<\/p>\n","protected":false},"excerpt":{"rendered":"

\u201eExtinderea topirii ghe\u021barilor \u0219i limitele de z\u0103pad\u0103 sunt indicatori indirecti ai echilibrului masic al ghe\u021barilor\u201d, a declarat Albin Wells, care a condus studiul. Bilan\u021bul masic al ghe\u021barilor se refer\u0103 la … Read More<\/a><\/p>\n","protected":false},"author":1,"featured_media":697560,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"Default","format":"standard","meta":[],"categories":[1],"tags":[],"_links":{"self":[{"href":"https:\/\/microscopemedia.com\/index.php?rest_route=\/wp\/v2\/posts\/697559"}],"collection":[{"href":"https:\/\/microscopemedia.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/microscopemedia.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/microscopemedia.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/microscopemedia.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=697559"}],"version-history":[{"count":0,"href":"https:\/\/microscopemedia.com\/index.php?rest_route=\/wp\/v2\/posts\/697559\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/microscopemedia.com\/index.php?rest_route=\/wp\/v2\/media\/697560"}],"wp:attachment":[{"href":"https:\/\/microscopemedia.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=697559"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/microscopemedia.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=697559"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/microscopemedia.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=697559"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}