{"id":7741,"date":"2017-10-26T00:02:28","date_gmt":"2017-10-25T17:02:28","guid":{"rendered":"http:\/\/ttud.com.vn\/?p=7741"},"modified":"2017-12-04T00:07:34","modified_gmt":"2017-12-03T17:07:34","slug":"cac-nha-khoa-hoc-chia-re-ve-lo-hong-khong-lo-xuat-hien-o-nam-cuc","status":"publish","type":"post","link":"https:\/\/casta.ttud.com.vn\/index.php\/cac-nha-khoa-hoc-chia-re-ve-lo-hong-khong-lo-xuat-hien-o-nam-cuc\/","title":{"rendered":"C\u00e1c nh\u00e0 khoa h\u1ecdc chia r\u1ebd v\u1ec1 l\u1ed7 h\u1ed5ng kh\u1ed5ng l\u1ed3 xu\u1ea5t hi\u1ec7n \u1edf Nam C\u1ef1c"},"content":{"rendered":"
\"\"<\/a><\/div>\n
L\u1ed7 h\u1ed5ng kh\u1ed5ng l\u1ed3. (Ngu\u1ed3n: NASA)<\/em><\/div>\n

M\u1ed9t l\u1ed7 h\u1ed5ng r\u1ed9ng kho\u1ea3ng 40.000 km2, \u0111\u01b0\u1ee3c h\u00ecnh th\u00e0nh \u1edf gi\u1eefa Nam c\u1ef1c, v\u00e0o m\u00f9a \u0110\u00f4ng ch\u00e2u \u00dac (t\u1eeb th\u00e1ng 7 \u0111\u1ebfn th\u00e1ng 8), \u0111ang thu h\u00fat s\u1ef1 quan t\u00e2m c\u1ee7a \u0111\u00f4ng \u0111\u1ea3o c\u00e1c nh\u00e0 khoa h\u1ecdc v\u00e0 chuy\u00ean gia nghi\u00ean c\u1ee9u v\u1ec1 kh\u00ed h\u1eadu tr\u00ean th\u1ebf gi\u1edbi. \u00dd ki\u1ebfn c\u1ee7a gi\u1edbi khoa h\u1ecdc kh\u00e1 chia r\u1ebd v\u1ec1 hi\u1ec7n t\u01b0\u1ee3ng n\u00e0y, t\u1eebng c\u00f3 l\u1ea7n \u0111\u01b0\u1ee3c bi\u1ebft \u0111\u1ebfn v\u00e0o n\u0103m 1974.<\/p>\n

L\u1ed7 h\u1ed5ng h\u00ecnh tr\u00f2n n\u00e0y r\u1ed9ng \u00edt nh\u1ea5t 40.000 km2 (t\u01b0\u01a1ng \u0111\u01b0\u01a1ng di\u1ec7n t\u00edch Th\u1ee5y S\u0129 ho\u1eb7c b\u1eb1ng 1\/8 t\u1ed5ng di\u1ec7n t\u00edch Vi\u1ec7t Nam), th\u1eadm ch\u00ed m\u1ed9t s\u1ed1 h\u00e3ng tin c\u00f2n cho r\u1eb1ng l\u1ed7 h\u1ed5ng n\u00e0y c\u00f3 di\u1ec7n t\u00edch l\u00ean t\u1edbi 80.000 km2, \u0111\u00e3 \u0111\u01b0\u1ee3c ph\u00e1t hi\u1ec7n v\u00e0o th\u00e1ng tr\u01b0\u1edbc nh\u1edd c\u00e1c h\u00ecnh \u1ea3nh v\u1ec7 tinh. Theo th\u00f4ng tin t\u1eeb nh\u1eadt b\u00e1o Le Temps c\u1ee7a Th\u1ee5y S\u0129, l\u1ed7 h\u1ed5ng n\u00e0y n\u1eb1m \u1edf bi\u1ec3n Weddell, ph\u00eda T\u00e2y B\u1eafc ch\u00e2u Nam c\u1ef1c.<\/p>\n

Trong khi m\u1ed9t s\u1ed1 vi\u1ec7n nghi\u00ean c\u1ee9u li\u00ean h\u1ec7 tr\u1ef1c ti\u1ebfp hi\u1ec7n t\u01b0\u1ee3ng n\u00e0y v\u1edbi t\u00ecnh tr\u1ea1ng n\u00f3ng l\u00ean to\u00e0n c\u1ea7u, chuy\u00ean gia kh\u00ed h\u1eadu Heinz Wanner, ng\u01b0\u1eddi s\u00e1ng l\u1eadp Trung t\u00e2m nghi\u00ean c\u1ee9u bi\u1ebfn \u0111\u1ed5i kh\u00ed h\u1eadu Oeschger t\u1ea1i Berne (Th\u1ee5y S\u0129) l\u1ea1i kh\u1eb3ng \u0111\u1ecbnh, “\u0111\u1ed1i v\u1edbi ng\u00e0nh nghi\u00ean c\u1ee9u kh\u00ed h\u1eadu, nh\u1eefng li\u00ean h\u1ec7 nh\u00e2n qu\u1ea3 nh\u01b0 th\u1ebf n\u00e0y r\u1ea5t kh\u00f3 x\u00e1c \u0111\u1ecbnh.” Nh\u00e0 khoa h\u1ecdc n\u00e0y c\u0169ng cho r\u1eb1ng c\u1ea7n ph\u1ea3i c\u00f3 th\u00eam nhi\u1ec1u nghi\u00ean c\u1ee9u \u0111\u1ec3 c\u00f3 th\u1ec3 kh\u1eb3ng \u0111\u1ecbnh m\u1ed1i li\u00ean h\u1ec7 gi\u1eefa hi\u1ec7n t\u01b0\u1ee3ng \u1edf Nam c\u1ef1c n\u00e0y v\u00e0 t\u00ecnh tr\u1ea1ng n\u00f3ng l\u00ean to\u00e0n c\u1ea7u.<\/p>\n

\u0110\u1ed1i v\u1edbi nhi\u1ec1u nh\u00e0 khoa h\u1ecdc, l\u1ed7 h\u1ed5ng n\u00e0y g\u1ecdi l\u00e0 \u201cpolynie\u201d (theo ti\u1ebfng Ph\u00e1p) l\u00e0 m\u1ed9t khu v\u1ef1c b\u0103ng ho\u1eb7c m\u1ed9t l\u1edbp b\u0103ng r\u1ea5t m\u1ecfng n\u1eb1m gi\u1eefa kh\u1ed1i b\u0103ng r\u1ed9ng l\u1edbn. Nguy\u00ean nh\u00e2n g\u00e2y ra l\u1ed7 h\u1ed5ng n\u00e0y v\u1eabn ch\u01b0a \u0111\u01b0\u1ee3c l\u00fd gi\u1ea3i m\u1ed9t c\u00e1ch r\u00f5 r\u00e0ng, c\u00f3 th\u1ec3 do t\u00e1c \u0111\u1ed9ng c\u1ee7a d\u00f2ng h\u1ea3i l\u01b0u, \u00e1p l\u1ef1c gi\u00f3 m\u1ea1nh hay \u0111\u1ed9 d\u00e0y c\u1ee7a b\u0103ng. Theo nh\u00e0 s\u00e1ng l\u1eadp Trung t\u00e2m nghi\u00ean c\u1ee9u v\u1ec1 bi\u1ebfn \u0111\u1ed5i kh\u00ed h\u1eadu Oeschger, “trong tr\u01b0\u1eddng h\u1ee3p c\u1ee7a l\u1ed7 h\u1ed5ng \u1edf bi\u1ec3n Weddell, \u0111\u00e2y ch\u1eafc ch\u1eafn l\u00e0 s\u1ef1 tan ch\u1ea3y c\u1ee7a b\u0103ng ch\u1ee7 y\u1ebfu do s\u1ef1 gia t\u0103ng n\u01b0\u1edbc n\u00f3ng d\u01b0\u1edbi l\u1edbp b\u0103ng. M\u1ed9t d\u00f2ng h\u1ea3i l\u01b0u chuy\u1ec3n \u0111\u1ed9ng \u0111i l\u00ean \u0111\u00e3 l\u00e0m tan ch\u1ea3y l\u1edbp b\u0103ng t\u1eeb b\u00ean d\u01b0\u1edbi.”<\/p>\n

C\u00e1c nh\u00e0 khoa h\u1ecdc t\u1eebng bi\u1ebft \u0111\u1ebfn hi\u1ec7n t\u01b0\u1ee3ng \u201cpolynie,\u201d nh\u01b0ng hi\u1ebfm khi n\u00f3 \u0111\u1ea1t \u0111\u1ebfn quy m\u00f4 l\u1edbn nh\u01b0 v\u1eady, \u0111\u1eb7c bi\u1ec7t l\u00e0 \u1edf ngo\u00e0i kh\u01a1i. Hi\u1ec7n t\u01b0\u1ee3ng t\u01b0\u01a1ng t\u1ef1 t\u1eebng \u0111\u01b0\u1ee3c bi\u1ebft \u0111\u1ebfn x\u1ea3y ra v\u00e0o n\u0103m 1974, c\u0169ng trong \u00a0khu v\u1ef1c n\u00e0y. L\u1ed7 h\u1ed5ng \u0111\u00f3 r\u1ed9ng 300.000 km2, \u0111\u00e3 bi\u1ebfn m\u1ea5t 40 n\u0103m sau \u0111\u00f3, tr\u01b0\u1edbc khi xu\u1ea5t hi\u1ec7n tr\u1edf l\u1ea1i v\u00e0o n\u0103m ngo\u00e1i trong m\u1ed9t v\u00e0i tu\u1ea7n, sau \u0111\u00f3 l\u1ea1i quay tr\u1edf l\u1ea1i m\u1ed9t l\u1ea7n n\u1eefa v\u00e0o n\u0103m nay, r\u1ed9ng h\u01a1n \u0111\u00e1ng k\u1ec3 so v\u1edbi l\u1ed7 h\u1ed5ng xu\u1ea5t hi\u1ec7n n\u0103m ngo\u00e1i.<\/p>\n

Theo c\u00e1c nh\u00e0 khoa h\u1ecdc \u0111ang nghi\u00ean c\u1ee9u hi\u1ec7n t\u01b0\u1ee3ng n\u00e0y, v\u1eabn c\u00f2n qu\u00e1 s\u1edbm \u0111\u1ec3 quy k\u1ebft hi\u1ec7n t\u01b0\u1ee3ng n\u00e0y x\u1ea3y ra l\u00e0 do t\u00ecnh tr\u1ea1ng n\u00f3ng l\u00ean to\u00e0n c\u1ea7u. Nh\u01b0ng ng\u01b0\u1ee3c l\u1ea1i, b\u0103ng tan ch\u1eafc ch\u1eafn c\u00f3 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn nhi\u1ec7t \u0111\u1ed9 c\u1ee7a n\u01b0\u1edbc v\u00e0 do \u0111\u00f3, \u00edt nh\u1ea5t c\u00f3 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn kh\u00ed h\u1eadu \u1edf khu v\u1ef1c \u0111\u00f3. D\u00f9 th\u1ebf n\u00e0o ch\u0103ng n\u1eefa, m\u1ed1i li\u00ean h\u1ec7 gi\u1eefa \u201cpolynie\u201d v\u00e0 bi\u1ebfn \u0111\u1ed5i kh\u00ed h\u1eadu v\u1eabn l\u00e0 tr\u1ecdng t\u00e2m c\u1ee7a c\u00e1c cu\u1ed9c tranh lu\u1eadn v\u1ec1 hi\u1ec7n t\u01b0\u1ee3ng n\u00e0y, c\u1ea3 trong gi\u1edbi khoa h\u1ecdc v\u00e0 tr\u00ean c\u00e1c m\u1ea1ng x\u00e3 h\u1ed9i.\/.<\/p>\n

theo\u00a0TTXVN<\/em><\/p>\n","protected":false},"excerpt":{"rendered":"

L\u1ed7 h\u1ed5ng kh\u1ed5ng l\u1ed3. (Ngu\u1ed3n: NASA) M\u1ed9t l\u1ed7 h\u1ed5ng r\u1ed9ng kho\u1ea3ng 40.000 km2, \u0111\u01b0\u1ee3c h\u00ecnh th\u00e0nh \u1edf gi\u1eefa Nam c\u1ef1c, v\u00e0o m\u00f9a \u0110\u00f4ng ch\u00e2u \u00dac (t\u1eeb th\u00e1ng 7 \u0111\u1ebfn th\u00e1ng 8), \u0111ang thu h\u00fat s\u1ef1 quan t\u00e2m c\u1ee7a \u0111\u00f4ng \u0111\u1ea3o c\u00e1c nh\u00e0 khoa h\u1ecdc v\u00e0 chuy\u00ean gia nghi\u00ean c\u1ee9u v\u1ec1 kh\u00ed h\u1eadu tr\u00ean th\u1ebf gi\u1edbi. […]<\/p>\n","protected":false},"author":18,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[47],"tags":[],"class_list":["post-7741","post","type-post","status-publish","format-standard","hentry","category-tin-tuc"],"_links":{"self":[{"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/posts\/7741","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/users\/18"}],"replies":[{"embeddable":true,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/comments?post=7741"}],"version-history":[{"count":1,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/posts\/7741\/revisions"}],"predecessor-version":[{"id":7742,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/posts\/7741\/revisions\/7742"}],"wp:attachment":[{"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/media?parent=7741"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/categories?post=7741"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/tags?post=7741"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}