{"id":11202,"date":"2026-02-13T07:56:35","date_gmt":"2026-02-13T07:56:35","guid":{"rendered":"https:\/\/info-eforie.ro\/index.php\/2026\/02\/13\/cum-si-a-pierdut-marte-apa-o-furtuna-uimitoare-ar-fi-vinovata\/"},"modified":"2026-02-13T07:56:35","modified_gmt":"2026-02-13T07:56:35","slug":"cum-si-a-pierdut-marte-apa-o-furtuna-uimitoare-ar-fi-vinovata","status":"publish","type":"post","link":"https:\/\/info-eforie.ro\/index.php\/2026\/02\/13\/cum-si-a-pierdut-marte-apa-o-furtuna-uimitoare-ar-fi-vinovata\/","title":{"rendered":"Cum \u0219i-a pierdut Marte apa: o furtun\u0103 \u201euimitoare\u201d ar fi vinovat\u0103"},"content":{"rendered":"<div>\n<p>Cercet\u0103torii au analizat date provenite de la \u0219ase instrumente montate pe trei misiuni spa\u021biale \u0219i au identificat un nou indiciu privind dispari\u021bia apei care a existat c\u00e2ndva pe Marte. Concluzia lor, citat\u0103 de Science Alert, este c\u0103 furtunile de praf \u00eemping apa \u00een atmosfera planetei, unde aceasta este distrus\u0103 pe tot parcursul anului.<\/p>\n<div><picture loading=\"eager\" width=\"1400\" height=\"750\" alt=\"Planeta Marte\/FOTO:Arhiva\"><source type=\"image\/webp\"  media=\"(min-width: 1400px)\"><source type=\"image\/webp\"  media=\"(min-width: 1000px)\"><source type=\"image\/webp\"  media=\"(min-width: 700px)\"><source type=\"image\/jpeg\"  media=\"(min-width: 1400px)\"><source type=\"image\/jpeg\"  media=\"(min-width: 1000px)\"><source type=\"image\/jpeg\"  media=\"(min-width: 700px)\"><img fetchpriority=\"high\" decoding=\"async\" src=\"https:\/\/cdn.adh.reperio.news\/image-2\/2a379b2a-dff5-4ecb-a46e-b97c8c75aea9\/index.jpeg?p=a%3D1%26co%3D1.05%26w%3D700%26h%3D750%26r%3Dcontain%26f%3Dwebp\" alt=\"Planeta Marte\/FOTO:Arhiva\" width=\"1400\" height=\"750\" loading=\"eager\"><\/picture>\n<p>Planeta Marte\/FOTO:Arhiva<\/p>\n<\/div>\n<h2>Oceane de sute de metri ad\u00e2ncime<\/h2>\n<p>Oamenii de \u0219tiin\u021b\u0103 cred c\u0103, \u00een trecut, Marte ar fi avut suficient\u0103 ap\u0103 pentru a-\u0219i acoperi suprafa\u021ba cu un ocean de aproximativ 100 de metri ad\u00e2ncime. Estimarea se bazeaz\u0103 pe analiza raportului dintre deuteriu \u0219i hidrogen (D\/H).<\/p>\n<p>Deuteriul este un izotop mai greu al hidrogenului \u0219i reprezint\u0103 o mic\u0103 frac\u021biune din atomii de hidrogen prezen\u021bi \u00een moleculele de ap\u0103. A\u0219a-numita \u201eap\u0103 grea\u201d, care con\u021bine deuteriu, are mai pu\u021bine \u0219anse s\u0103 ajung\u0103 \u00een straturile superioare ale atmosferei, unde radia\u021bia ultraviolet\u0103 o poate descompune, iar atomii de hidrogen rezulta\u021bi sunt apoi purta\u021bi de v\u00e2ntul solar \u00een spa\u021biu. \u00cen timp, pe m\u0103sur\u0103 ce hidrogenul mai u\u0219or este pierdut, propor\u021bia de deuteriu cre\u0219te.<\/p>\n<p>M\u0103sur\u0103torile efectuate pe Marte arat\u0103 un raport D\/H de cinci p\u00e2n\u0103 la opt ori mai mare dec\u00e2t pe P\u0103m\u00e2nt. Extrapol\u00e2nd aceste date, cercet\u0103torii estimeaz\u0103 c\u0103 planeta ar fi avut c\u00e2ndva suficiente rezerve de ap\u0103 pentru a acoperi o mare parte a suprafe\u021bei sale la ad\u00e2ncimi de c\u00e2teva sute de metri, posibil sub form\u0103 de ghea\u021b\u0103.<\/p>\n<h2>Rolul anotimpurilor mar\u021biene<\/h2>\n<p>Pentru a \u00een\u021belege unde a disp\u0103rut aceast\u0103 ap\u0103, trebuie luate \u00een calcul anotimpurile mar\u021biene. La fel ca P\u0103m\u00e2ntul, Marte are o ax\u0103 \u00eenclinat\u0103, ceea ce determin\u0103 alternan\u021ba anotimpurilor. \u00cens\u0103 orbita sa este mai eliptic\u0103, ceea ce face ca unul dintre verile planetei \u2013 c\u00e2nd Marte se afl\u0103 mai aproape de Soare (periheliu) \u2013 s\u0103 fie semnificativ mai cald dec\u00e2t cel\u0103lalt, care coincide cu pozi\u021bia mai \u00eendep\u0103rtat\u0103 (afeliu). Astfel, vara din emisfera sudic\u0103 este mult mai cald\u0103 dec\u00e2t cea din emisfera nordic\u0103.<\/p>\n<p>P\u00e2n\u0103 de cur\u00e2nd, cercet\u0103torii considerau c\u0103 apa ajunge \u00een atmosfer\u0103 \u00een principal \u00een timpul verii sudice, c\u00e2nd temperaturile sunt mai ridicate.<\/p>\n<h2>O furtun\u0103 nea\u0219teptat\u0103<\/h2>\n<p>Noul studiu contest\u0103 aceast\u0103 ipotez\u0103. Datele indic\u0103 faptul c\u0103 un tip specific de furtun\u0103, produs\u0103 \u00een emisfera nordic\u0103, poate declan\u0219a acela\u0219i proces.<\/p>\n<p>\u00cen timpul furtunilor de praf din vara sudic\u0103, particulele sunt ridicate \u00een straturile medii ale atmosferei, \u00eenc\u0103lzind aerul cu aproximativ 15 grade Celsius. \u00cen mod normal, la aceste altitudini se formeaz\u0103 nori de ghea\u021b\u0103 care \u201ecapteaz\u0103\u201d apa prin \u00eenghe\u021b. \u00cens\u0103 cre\u0219terea temperaturii \u00eempiedic\u0103 formarea acestor nori, permi\u021b\u00e2nd apei s\u0103 urce \u00een straturile superioare ale atmosferei, unde este expus\u0103 radia\u021biei ultraviolete \u0219i se descompune.<\/p>\n<p>Anterior se credea c\u0103 acest mecanism func\u021bioneaz\u0103 doar \u00een vara sudic\u0103. \u00cens\u0103 datele colectate de misiunile ExoMars, Emirates Mars Mission \u0219i Mars Reconnaissance Orbiter au \u00eenregistrat o furtun\u0103 puternic\u0103 \u00een timpul verii nordice, \u00een anul mar\u021bian 37 (2022\u20132023 pe P\u0103m\u00e2nt), un fenomen f\u0103r\u0103 precedent.<\/p>\n<p>Aceasta a declan\u0219at acela\u0219i proces de distrugere a apei observat \u00een sud. Descoperirea sugereaz\u0103 c\u0103 ciclurile furtunilor de praf pot transporta apa \u00een atmosfera mar\u021bian\u0103 pe tot parcursul anului, ceea ce \u00eenseamn\u0103 c\u0103 pierderea apei nu este limitat\u0103 la un anumit sezon.<\/p>\n<\/p><\/div>\n<p><a href=\"https:\/\/adevarul.ro\/stiri-externe\/in-lume\/cum-si-a-pierdut-marte-apa-o-furtuna-uimitoare-2507887.html\" class=\"button purchase\" rel=\"nofollow noopener\" target=\"_blank\">Read More<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Cercet\u0103torii au analizat date provenite de la \u0219ase instrumente montate pe trei misiuni spa\u021biale \u0219i au identificat un nou indiciu privind dispari\u021bia apei care a [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":11203,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":""},"categories":[6],"tags":[],"class_list":["post-11202","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-popular"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/info-eforie.ro\/index.php\/wp-json\/wp\/v2\/posts\/11202","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/info-eforie.ro\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/info-eforie.ro\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/info-eforie.ro\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/info-eforie.ro\/index.php\/wp-json\/wp\/v2\/comments?post=11202"}],"version-history":[{"count":0,"href":"https:\/\/info-eforie.ro\/index.php\/wp-json\/wp\/v2\/posts\/11202\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/info-eforie.ro\/index.php\/wp-json\/wp\/v2\/media\/11203"}],"wp:attachment":[{"href":"https:\/\/info-eforie.ro\/index.php\/wp-json\/wp\/v2\/media?parent=11202"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/info-eforie.ro\/index.php\/wp-json\/wp\/v2\/categories?post=11202"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/info-eforie.ro\/index.php\/wp-json\/wp\/v2\/tags?post=11202"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}