{"id":28278,"date":"2019-04-10T09:52:00","date_gmt":"2019-04-10T02:52:00","guid":{"rendered":"https:\/\/ttud.com.vn\/?p=28278"},"modified":"2021-10-02T21:54:31","modified_gmt":"2021-10-02T14:54:31","slug":"hien-tuong-la-kich-hoat-ky-bang-ha-tren-trai-dat","status":"publish","type":"post","link":"https:\/\/casta.ttud.com.vn\/index.php\/hien-tuong-la-kich-hoat-ky-bang-ha-tren-trai-dat\/","title":{"rendered":"Hi\u1ec7n t\u01b0\u1ee3ng l\u1ea1 k\u00edch ho\u1ea1t k\u1ef7 b\u0103ng h\u00e0 tr\u00ean Tr\u00e1i \u0111\u1ea5t"},"content":{"rendered":"\n

Hai nghi\u00ean c\u1ee9u m\u1edbi cho th\u1ea5y tr\u00e1i \u0111\u1ea5t c\u00f3 th\u1ec3 \u0111\u1ed1i di\u1ec7n v\u1edbi nh\u1eefng thay \u0111\u1ed5i l\u1edbn v\u00e0 to\u00e0n di\u1ec7n trong t\u01b0\u01a1ng lai g\u1ea7n do s\u1ef1 thay \u0111\u1ed5i kh\u00f3 l\u01b0\u1eddng c\u1ee7a kh\u00ed h\u1eadu.<\/h2>\n\n\n\n

Nghi\u00ean c\u1ee9u m\u1edbi d\u1eabn \u0111\u1ea7u b\u1edfi ti\u1ebfn s\u0129 Jesse Farmer, \u0111\u1ebfn t\u1eeb \u0110\u1ea1i h\u1ecdc Princeton (M\u1ef9), \u0111\u00e3 ph\u00e2n t\u00edch l\u1edbp tr\u1ea7m t\u00edch d\u01b0\u1edbi \u0111\u00e1y \u0111\u1ea1i d\u01b0\u01a1ng v\u00e0 ph\u00e1t hi\u1ec7n m\u1ed9t hi\u1ec7n t\u01b0\u1ee3ng x\u1ea3y ra v\u00e0o 950.000 v\u1ec1 tr\u01b0\u1edbc, \u0111\u1ea9y tr\u00e1i \u0111\u1ea5t v\u00e0o th\u1eddi k\u1ef3 \u0111\u00f3ng b\u0103ng s\u00e2u do k\u00edch ho\u1ea1t m\u1ed9t lo\u1ea1t c\u00e1c k\u1ef7 b\u0103ng h\u00e0 n\u1ed1i ti\u1ebfp.<\/p>\n\n\n\n

Khi \u0111\u00f3, m\u1ed9t h\u1ec7 th\u1ed1ng d\u00f2ng ch\u1ea3y quan tr\u1ecdng \u1edf \u0110\u1ea1i T\u00e2y D\u01b0\u01a1ng mang t\u00ean AMOC (h\u1ec7 th\u1ed1ng l\u01b0u th\u00f4ng \u0111\u1ea3o ng\u01b0\u1ee3c \u0110\u1ea1i T\u00e2y D\u01b0\u01a1ng) \u0111\u00e3 b\u1ecb ch\u1eadm l\u1ea1i. AMOC v\u1eadn chuy\u1ec3n n\u01b0\u1edbc \u1ea5m, m\u1eb7n t\u1eeb g\u1ea7n x\u00edch \u0111\u1ea1o \u0111\u1ebfn khu v\u1ef1c B\u1eafc \u00c2u. N\u01b0\u1edbc l\u1ea1nh h\u01a1n t\u1eeb B\u1eafc C\u1ef1c l\u00e0m cho s\u1ed1 n\u01b0\u1edbc n\u00e0y tr\u1edf n\u00ean \u0111\u1eb7c h\u01a1n v\u00e0 ch\u00ecm xu\u1ed1ng v\u1ef1c th\u1eb3m, mang theo m\u1ed9t l\u01b0\u1ee3ng l\u1edbn carbon h\u1ea5p th\u1ee5 t\u1eeb kh\u00ed quy\u1ec3n.<\/p>\n\n\n\n

N\u01b0\u1edbc s\u00e2u n\u00e0y sau \u0111\u00f3 quay l\u1ea1i t\u00e1i h\u1ee3p v\u1edbi v\u00f9ng bi\u1ec3n ph\u00eda nam \u1ea5m \u00e1p v\u00e0 gi\u1ea3i ph\u00f3ng kh\u00ed nh\u00e0 k\u00ednh.<\/p>\n\n\n\n

\"Hi\u1ec7n<\/figure><\/div>\n\n\n\n

C\u00e1ch th\u1ee9c AMOC v\u1eadn h\u00e0nh th\u1eddi gian g\u1ea7n \u0111\u00e2y y h\u1ec7t c\u00e1ch n\u00f3 \u0111\u00e3 ho\u1ea1t \u0111\u1ed9ng v\u00e0 \u0111\u1ea9y tr\u00e1i \u0111\u1ea5t v\u00e0o m\u1ed9t lo\u1ea1t k\u1ef7 b\u0103ng h\u00e0 g\u1ea7n 1 tri\u1ec7u n\u0103m v\u1ec1 tr\u01b0\u1edbc<\/em><\/p>\n\n\n\n

Cho d\u00f9 nhi\u1ec1u kh\u00ed nh\u00e0 k\u00ednh s\u1ebd g\u00e2y n\u00ean hi\u1ec7n t\u01b0\u1ee3ng n\u00f3ng l\u00ean to\u00e0n c\u1ea7u nh\u01b0ng v\u1edbi vi\u1ec7c AMOC ch\u1eadm l\u1ea1i, m\u1ed9t l\u01b0\u1ee3ng kh\u1ed5ng l\u1ed3 carbon s\u1ebd b\u1ecb kh\u00f3a k\u00edn d\u01b0\u1edbi \u0111\u00e1y \u0111\u1ea1i d\u01b0\u01a1ng, ch\u1eadm t\u00e1i h\u1ee3p v\u1edbi khu v\u1ef1c ph\u00eda Nam. S\u1ef1 h\u1ea1 th\u1ea5p \u0111\u1ed9t ng\u1ed9t c\u1ee7a l\u01b0\u1ee3ng carbon trong kh\u00f4ng kh\u00ed l\u00e0m m\u00e1t h\u00e0nh tinh. S\u1ef1 l\u00e0m m\u00e1t n\u00e0y kh\u00f4ng h\u1ec1 l\u00e0 tin vui b\u1edfi n\u00f3 c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn k\u1ef7 b\u0103ng h\u00e0 \u0111\u1ed9t ng\u1ed9t, \u0111i\u1ec1u s\u1ebd \u1ea3nh h\u01b0\u1edfng r\u1ea5t l\u1edbn \u0111\u1ebfn con ng\u01b0\u1eddi v\u00e0 c\u00e1c sinh v\u1eadt tr\u00ean tr\u00e1i \u0111\u1ea5t.<\/p>\n\n\n\n

\u0110i\u1ec1u \u0111\u00e1ng ch\u00fa \u00fd l\u00e0 AMOC hi\u1ec7n \u0111ang ch\u1eadm l\u1ea1i y nh\u01b0 1 tri\u1ec7u n\u0103m v\u1ec1 tr\u01b0\u1edbc!<\/p>\n\n\n\n

Trong khi \u0111\u00f3, m\u1ed9t nghi\u00ean c\u1ee9u kh\u00e1c v\u1eeba c\u00f4ng b\u1ed1 tr\u00ean t\u1ea1p ch\u00ed khoa h\u1ecdc Nature Ecology and Evolution <\/em>th\u00ec c\u1ea3nh b\u00e1o tr\u00e1i \u0111\u1ea5t \u0111ang \u1edf gi\u1eefa \u0111\u1ea1i tuy\u1ec7t ch\u1ee7ng l\u1ea7n th\u1ee9 6 v\u00e0 ph\u1ea3i m\u1ea5t \u00edt nh\u1ea5t 10 tri\u1ec7u n\u0103m \u0111\u1ec3 h\u1ec7 sinh th\u00e1i ph\u1ee5c h\u1ed3i l\u1ea1i s\u1ef1 \u0111a d\u1ea1ng nh\u01b0 tr\u01b0\u1edbc \u0111\u00e2y. Bi\u1ebfn \u0111\u1ed5i kh\u00ed h\u1eadu nh\u00e2n t\u1ea1o \u0111ang l\u00e0m suy gi\u1ea3m c\u00e1c h\u1ec7 sinh th\u00e1i v\u00e0 \u0111ang qu\u00e9t s\u1ea1ch c\u00e1c lo\u00e0i v\u1edbi t\u1ed1c \u0111\u1ed9 c\u1ee7a m\u1ed9t c\u01a1n tuy\u1ec7t ch\u1ee7ng h\u00e0ng lo\u1ea1t.<\/p>\n\n\n\n

Ti\u1ebfn s\u0129 Christopher Lower – \u0111\u1ebfn t\u1eeb \u0110\u1ea1i h\u1ecdc Texas (M\u1ef9), ng\u01b0\u1eddi \u0111\u1ee9ng \u0111\u1ea7u nghi\u00ean c\u1ee9u – cho bi\u1ebft h\u1ecd \u0111\u00e3 s\u1eed d\u1ee5ng ph\u1ea7n c\u00f2n l\u1ea1i c\u1ee7a sinh v\u1eadt ph\u00f9 du \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 foraminifera \u0111\u1ec3 \u0111o l\u01b0\u1eddng s\u1ef1 thay \u0111\u1ed5i v\u1ec1 s\u1ed1 l\u01b0\u1ee3ng v\u00e0 s\u1ef1 \u0111a d\u1ea1ng c\u1ee7a lo\u00e0i theo th\u1eddi gian. H\u1ecd t\u00ednh \u0111\u01b0\u1ee3c r\u1eb1ng v\u1ee5 t\u1ea5n c\u00f4ng c\u1ee7a thi\u00ean th\u1ea1ch gi\u1ebft ch\u1ebft lo\u00e0i kh\u1ee7ng long, tr\u00e1i \u0111\u1ea5t \u0111\u00e3 m\u1ea5t 10 tri\u1ec7u n\u0103m \u0111\u1ec3 ph\u1ee5c h\u1ed3i. C\u00e1c qu\u00e1 tr\u00ecnh t\u01b0\u01a1ng t\u1ef1, v\u1edbi th\u1eddi gian t\u01b0\u01a1ng t\u1ef1 s\u1ebd ho\u1ea1t \u0111\u1ed9ng trong t\u1ea5t c\u1ea3 c\u00e1c tr\u01b0\u1eddng h\u1ee3p \u0111\u1ea1i tuy\u1ec7t ch\u1ee7ng kh\u00e1c.<\/p>\n\n\n\n

Trong khi m\u1ea5t h\u00e0ng tri\u1ec7u n\u0103m \u0111\u1ec3 ph\u1ee5c h\u1ed3i \u0111a d\u1ea1ng sinh h\u1ecdc, c\u00e1c lo\u00e0i sinh v\u1eadt tr\u00e1i \u0111\u1ea5t \u0111ang bi\u1ebfn m\u1ea5t v\u1edbi t\u1ed1c \u0111\u1ed9 nhanh \u0111\u00e1ng s\u1ee3. Tr\u01b0\u1edbc \u0111\u00f3, m\u1ed9t nghi\u00ean c\u1ee9u t\u1eeb University College London (thu\u1ed9c \u0110\u1ea1i h\u1ecdc London, Anh) cho th\u1ea5y ch\u1ec9 trong v\u00f2ng 500 n\u0103m tr\u1edf l\u1ea1i \u0111\u00e2y, 935 lo\u00e0i \u0111\u00e3 ho\u00e0n to\u00e0n “b\u1ed1c h\u01a1i” kh\u1ecfi tr\u00e1i \u0111\u1ea5t, trong \u0111\u00f3 con ng\u01b0\u1eddi ph\u1ea3i ch\u1ecbu tr\u00e1ch nhi\u1ec7m m\u1ed9t ph\u1ea7n l\u1edbn.<\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"

Hai nghi\u00ean c\u1ee9u m\u1edbi cho th\u1ea5y tr\u00e1i \u0111\u1ea5t c\u00f3 th\u1ec3 \u0111\u1ed1i di\u1ec7n v\u1edbi nh\u1eefng thay \u0111\u1ed5i l\u1edbn v\u00e0 to\u00e0n di\u1ec7n trong t\u01b0\u01a1ng lai g\u1ea7n do s\u1ef1 thay \u0111\u1ed5i kh\u00f3 l\u01b0\u1eddng c\u1ee7a kh\u00ed h\u1eadu. Nghi\u00ean c\u1ee9u m\u1edbi d\u1eabn \u0111\u1ea7u b\u1edfi ti\u1ebfn s\u0129 Jesse Farmer, \u0111\u1ebfn t\u1eeb \u0110\u1ea1i h\u1ecdc Princeton (M\u1ef9), \u0111\u00e3 ph\u00e2n t\u00edch l\u1edbp tr\u1ea7m t\u00edch […]<\/p>\n","protected":false},"author":25,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[47],"tags":[],"class_list":["post-28278","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\/28278","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\/25"}],"replies":[{"embeddable":true,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/comments?post=28278"}],"version-history":[{"count":1,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/posts\/28278\/revisions"}],"predecessor-version":[{"id":28279,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/posts\/28278\/revisions\/28279"}],"wp:attachment":[{"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/media?parent=28278"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/categories?post=28278"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/tags?post=28278"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}