{"id":28647,"date":"2019-02-26T19:48:00","date_gmt":"2019-02-26T12:48:00","guid":{"rendered":"https:\/\/ttud.com.vn\/?p=28647"},"modified":"2021-10-03T19:49:25","modified_gmt":"2021-10-03T12:49:25","slug":"cac-nha-khoa-hoc-tim-ra-nguyen-nhan-su-kien-tuyet-chung-252-trieu-nam-truoc","status":"publish","type":"post","link":"https:\/\/casta.ttud.com.vn\/index.php\/cac-nha-khoa-hoc-tim-ra-nguyen-nhan-su-kien-tuyet-chung-252-trieu-nam-truoc\/","title":{"rendered":"C\u00e1c nh\u00e0 khoa h\u1ecdc t\u00ecm ra nguy\u00ean nh\u00e2n s\u1ef1 ki\u1ec7n tuy\u1ec7t ch\u1ee7ng 252 tri\u1ec7u n\u0103m tr\u01b0\u1edbc"},"content":{"rendered":"\n

Kho\u1ea3ng 252 tri\u1ec7u n\u0103m tr\u01b0\u1edbc, Tr\u00e1i \u0110\u1ea5t \u0111\u00e3 tr\u1ea3i qua s\u1ef1 t\u00e0n ph\u00e1 th\u1ea3m kh\u1ed1c \u0111\u1ebfn m\u1ee9c qu\u00e9t s\u1ea1ch g\u1ea7n nh\u01b0 to\u00e0n b\u1ed9 s\u1ef1 s\u1ed1ng tr\u00ean h\u00e0nh tinh.<\/h2>\n\n\n\n

70% t\u1ea5t c\u1ea3 c\u00e1c lo\u00e0i \u0111\u1ed9ng v\u1eadt c\u00f3 x\u01b0\u01a1ng s\u1ed1ng tr\u00ean c\u1ea1n \u0111\u00e3 b\u1ecb gi\u1ebft ch\u1ebft v\u00e0 96% t\u1ea5t c\u1ea3 c\u00e1c lo\u00e0i sinh v\u1eadt bi\u1ec3n, bao g\u1ed3m c\u1ea3 b\u1ecd ba thu\u1ef3 n\u1ed5i ti\u1ebfng tr\u01b0\u1edbc \u0111\u00f3 \u0111\u00e3 s\u1ed1ng s\u00f3t qua hai s\u1ef1 ki\u1ec7n tuy\u1ec7t ch\u1ee7ng h\u00e0ng lo\u1ea1t kh\u00e1c.<\/p>\n\n\n\n

N\u00f3 \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 S\u1ef1 ki\u1ec7n tuy\u1ec7t ch\u1ee7ng K\u1ef7 Permi-Trias v\u00e0 theo nh\u01b0 ch\u00fang ta bi\u1ebft, \u0111\u00f3 l\u00e0 s\u1ef1 ki\u1ec7n th\u1ea3m kh\u1ed1c nh\u1ea5t trong l\u1ecbch s\u1eed Tr\u00e1i \u0110\u1ea5t.<\/p>\n\n\n\n

\"C\u00e1c
C\u00e1c nh\u00e0 khoa h\u1ecdc v\u1eeba \u0111\u01b0a ra gi\u1ea3 thuy\u1ebft m\u1edbi v\u1ec1 s\u1ef1 ki\u1ec7n \u0111\u1ea1i tuy\u1ec7t ch\u1ee7ng K\u1ef7 Permi-Trias.<\/figcaption><\/figure>\n\n\n\n

Tr\u01b0\u1edbc \u0111\u00f3, t\u1eeb l\u00e2u c\u00e1c nh\u00e0 khoa h\u1ecdc v\u1eabn ch\u1ea5p nh\u1eadn m\u1ed9t quan \u0111i\u1ec3m cho r\u1eb1ng bi\u1ebfn \u0111\u1ed5i kh\u00ed h\u1eadu l\u00e0 nguy\u00ean nh\u00e2n. C\u1ee5 th\u1ec3 h\u01a1n l\u00e0 ho\u1ea1t \u0111\u1ed9ng n\u00fai l\u1eeda \u1edf Siberia \u0111\u00e3 phun ra r\u1ea5t nhi\u1ec1u v\u1eadt ch\u1ea5t v\u00e0o b\u1ea7u kh\u00ed quy\u1ec3n, n\u00f3 bao b\u1ecdc th\u1ebf gi\u1edbi trong m\u1ed9t l\u1edbp tro b\u1ee5i trong m\u1ed9t tri\u1ec7u n\u0103m, \u0111\u1ed3ng th\u1eddi ng\u0103n ch\u1eb7n \u00e1nh s\u00e1ng m\u1eb7t tr\u1eddi, l\u00e0m lo\u00e3ng t\u1ea7ng ozone, gi\u1ea3m m\u01b0a axit v\u00e0 t\u0103ng nhi\u1ec7t \u0111\u1ed9.<\/p>\n\n\n\n

Tuy nhi\u00ean, b\u00e2y gi\u1edd c\u00e1c nh\u00e0 khoa h\u1ecdc \u0111\u00e3 ch\u1ee9ng minh nh\u1eefng g\u00ec \u0111\u00e3 x\u00f3a s\u1ea1ch sinh v\u1eadt bi\u1ec3n th\u1ef1c t\u1ebf l\u00e0 do nhi\u1ec7t \u0111\u1ed9 t\u0103ng nhanh l\u00e0m t\u0103ng qu\u00e1 tr\u00ecnh trao \u0111\u1ed5i ch\u1ea5t c\u1ee7a c\u00e1c sinh v\u1eadt \u0111\u1ea1i d\u01b0\u01a1ng, l\u00e0m t\u0103ng nhu c\u1ea7u oxy c\u1ee7a ch\u00fang. Ch\u00ednh v\u00ec v\u1eady c\u00f3 th\u1ec3 n\u00f3i nh\u1eefng lo\u00e0i v\u1eadt ngh\u1eb9t th\u1edf theo ngh\u0129a \u0111en.<\/p>\n\n\n\n

“\u0110\u00e2y l\u00e0 l\u1ea7n \u0111\u1ea7u ti\u00ean ch\u00fang t\u00f4i \u0111\u00e3 \u0111\u01b0a ra m\u1ed9t d\u1ef1 \u0111o\u00e1n c\u01a1 h\u1ecdc v\u1ec1 nguy\u00ean nh\u00e2n g\u00e2y ra s\u1ef1 tuy\u1ec7t ch\u1ee7ng c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c ki\u1ec3m tra tr\u1ef1c ti\u1ebfp v\u1edbi h\u1ed3 s\u01a1 h\u00f3a th\u1ea1ch, sau \u0111\u00f3 cho ph\u00e9p ch\u00fang t\u00f4i \u0111\u01b0a ra d\u1ef1 \u0111o\u00e1n v\u1ec1 nguy\u00ean nh\u00e2n tuy\u1ec7t ch\u1ee7ng trong t\u01b0\u01a1ng lai\u201d, nh\u00e0 h\u1ea3i d\u01b0\u01a1ng h\u1ecdc Justin Penn thu\u1ed9c \u0110\u1ea1i h\u1ecdc Washington cho bi\u1ebft.<\/p>\n\n\n\n

\u0110\u1ec3 \u0111\u01b0a ra nh\u1eadn \u0111\u1ecbnh n\u00e0y, nh\u00f3m nghi\u00ean c\u1ee9u \u0111\u00e3 th\u1ef1c hi\u1ec7n m\u00f4 ph\u1ecfng tr\u00ean m\u00e1y t\u00ednh v\u1ec1 nh\u1eefng thay \u0111\u1ed5i m\u00e0 Tr\u00e1i \u0110\u1ea5t tr\u1ea3i qua trong s\u1ef1 ki\u1ec7n \u0111\u1ea1i tuy\u1ec7t ch\u1ee7ng. Tr\u01b0\u1edbc khi n\u00fai l\u1eeda Siberia phun tr\u00e0o, nhi\u1ec7t \u0111\u1ed9 v\u00e0 n\u1ed3ng \u0111\u1ed9 oxy t\u01b0\u01a1ng t\u1ef1 nh\u01b0 hi\u1ec7n nay.<\/p>\n\n\n\n

Sau \u0111\u00f3, c\u00e1c nh\u00e0 nghi\u00ean c\u1ee9u n\u00e2ng cao kh\u00ed nh\u00e0 k\u00ednh trong b\u1ea7u kh\u00ed quy\u1ec3n c\u1ee7a m\u00f4 h\u00ecnh \u0111\u1ec3 m\u00f4 ph\u1ecfng c\u00e1c \u0111i\u1ec1u ki\u1ec7n sau v\u1ee5 phun tr\u00e0o, l\u00e0m t\u0103ng nhi\u1ec7t \u0111\u1ed9 m\u1eb7t n\u01b0\u1edbc bi\u1ec3n kho\u1ea3ng 11 \u0111\u1ed9 C. \u0110i\u1ec1u n\u00e0y d\u1eabn \u0111\u1ebfn s\u1ef1 suy gi\u1ea3m oxy kho\u1ea3ng 76% v\u00e0 kho\u1ea3ng 40% d\u01b0\u1edbi \u0111\u00e1y bi\u1ec3n, ch\u1ee7 y\u1ebfu \u1edf \u0111\u1ed9 s\u00e2u l\u1edbn h\u01a1n, \u0111\u00e3 ho\u00e0n to\u00e0n c\u1ea1n ki\u1ec7t oxy.<\/p>\n\n\n\n

“R\u1ea5t \u00edt sinh v\u1eadt bi\u1ec3n \u1edf trong c\u00f9ng m\u1ed9t m\u00f4i tr\u01b0\u1eddng s\u1ed1ng m\u00e0 ch\u00fang \u0111ang s\u1ed1ng b\u1ecb di\u1ec7t vong”, nh\u00e0 h\u1ea3i d\u01b0\u01a1ng h\u1ecdc Curtis Deutsch thu\u1ed9c \u0110\u1ea1i h\u1ecdc Washington nh\u1ea5n m\u1ea1nh.<\/p>\n\n\n\n

K\u1ec3 t\u1eeb n\u0103m 1880, nhi\u1ec7t \u0111\u1ed9 trung b\u00ecnh c\u1ee7a Tr\u00e1i \u0110\u1ea5t \u0111\u00e3 t\u0103ng 0,8 \u0111\u1ed9 C v\u00e0 hai ph\u1ea7n ba s\u1ef1 gia t\u0103ng \u0111\u00f3 \u0111\u00e3 x\u1ea3y ra k\u1ec3 t\u1eeb n\u0103m 1975. V\u00e0 s\u1ef1 n\u00f3ng l\u00ean c\u1ee7a c\u00e1c \u0111\u1ea1i d\u01b0\u01a1ng tr\u00ean Tr\u00e1i \u0110\u1ea5t v\u1eabn \u0111ang ti\u1ebfp t\u1ee5c gia t\u0103ng.<\/p>\n\n\n\n

“Theo k\u1ecbch b\u1ea3n ph\u00e1t th\u1ea3i nh\u01b0 th\u01b0\u1eddng l\u1ec7, v\u00e0o n\u0103m 2100, s\u1ef1 n\u00f3ng l\u00ean \u1edf c\u00e1c \u0111\u1ea1i d\u01b0\u01a1ng s\u1ebd \u0111\u1ea1t g\u1ea7n 20% s\u1ef1 n\u00f3ng l\u00ean \u1edf cu\u1ed1i k\u1ef7 Permi v\u00e0 \u0111\u1ebfn n\u0103m 2300, n\u00f3 s\u1ebd \u0111\u1ea1t t\u1eeb 35 – 50%”, nh\u00e0 nghi\u00ean c\u1ee9u Penn n\u00f3i.<\/p>\n\n\n\n

Minh Long<\/strong> (Theo Science Alert)<\/em><\/p>\n","protected":false},"excerpt":{"rendered":"

Kho\u1ea3ng 252 tri\u1ec7u n\u0103m tr\u01b0\u1edbc, Tr\u00e1i \u0110\u1ea5t \u0111\u00e3 tr\u1ea3i qua s\u1ef1 t\u00e0n ph\u00e1 th\u1ea3m kh\u1ed1c \u0111\u1ebfn m\u1ee9c qu\u00e9t s\u1ea1ch g\u1ea7n nh\u01b0 to\u00e0n b\u1ed9 s\u1ef1 s\u1ed1ng tr\u00ean h\u00e0nh tinh. 70% t\u1ea5t c\u1ea3 c\u00e1c lo\u00e0i \u0111\u1ed9ng v\u1eadt c\u00f3 x\u01b0\u01a1ng s\u1ed1ng tr\u00ean c\u1ea1n \u0111\u00e3 b\u1ecb gi\u1ebft ch\u1ebft v\u00e0 96% t\u1ea5t c\u1ea3 c\u00e1c lo\u00e0i sinh v\u1eadt bi\u1ec3n, bao g\u1ed3m […]<\/p>\n","protected":false},"author":17,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[47],"tags":[],"class_list":["post-28647","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\/28647","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\/17"}],"replies":[{"embeddable":true,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/comments?post=28647"}],"version-history":[{"count":1,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/posts\/28647\/revisions"}],"predecessor-version":[{"id":28648,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/posts\/28647\/revisions\/28648"}],"wp:attachment":[{"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/media?parent=28647"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/categories?post=28647"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/tags?post=28647"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}