T\u1eeb kh\u00f3a t\u00ecm ki\u1ebfm: Nh\u1eefng b\u00ed \u1ea9n c\u1ee7a nh\u00e2n lo\u1ea1i – Minh Anh<\/p>\n\n\n\n
C\u00e1c nh\u00e0 nghi\u00ean c\u1ee9u \u0111\u00e3 t\u00ecm ra tung t\u00edch \u201cng\u01b0\u1eddi th\u1ee3 \u0111i\u00eau kh\u1eafc\u201d \u0111\u00e3 t\u1ea1c n\u00ean nh\u1eefng v\u00f2ng \u0111\u00e1 g\u1ea7n nh\u01b0 ho\u00e0n h\u1ea3o tr\u00ean m\u1eb7t \u0111\u1ea5t Alaska v\u00e0 qu\u1ea7n \u0111\u1ea3o Spisbergen \u1edf Na Uy: \u0110\u00f3 l\u00e0 m\u1ed9t qu\u00e1 tr\u00ecnh s\u00e0ng l\u1ecdc t\u1ef1 nhi\u00ean. K\u1ebft lu\u1eadn n\u00e0y c\u0169ng ch\u1ee9ng t\u1ecf r\u1eb1ng nh\u1eefng sinh v\u1eadt v\u0169 tr\u1ee5 v\u00e0 c\u00e1c th\u1ebf l\u1ef1c si\u00eau ph\u00e0m kh\u00f4ng \u0111\u1ebfn n\u01a1i n\u00e0y.<\/p>\n\n\n\n
V\u00f9ng \u0111\u1ea5t l\u1ea1nh l\u1ebdo v\u00e0 c\u1eb1n c\u1ed7i nh\u1ea5t th\u1ebf gi\u1edbi \u1edf b\u1eafc Alaska v\u00e0 qu\u1ea7n \u0111\u1ea3o Spitsbergen t\u1eeb l\u00e2u \u0111\u00e3 \u0111\u01b0\u1ee3c bi\u1ebft \u0111\u1ebfn v\u1edbi v\u00f4 s\u1ed1 nh\u1eefng v\u00f2ng tr\u00f2n, nh\u1eefng h\u00ecnh \u0111a gi\u00e1c v\u00e0 nh\u1eefng v\u1ea1ch s\u1ecdc b\u1eb1ng \u0111\u00e1, \u0111\u1ec1u \u0111\u1eb7n v\u00e0 tr\u00f2n tr\u1ecba nh\u01b0 \u0111\u01b0\u1ee3c m\u1ed9t b\u00e0n tay c\u1ee7a ng\u01b0\u1eddi ngh\u1ec7 s\u0129 t\u1ea1o n\u00ean. Tuy nhi\u00ean, b\u1eb1ng c\u00e1ch n\u00e0o \u0111\u1ec3 t\u1ea1o ra nh\u1eefng h\u00ecnh th\u00f9 tuy\u1ec7t \u0111\u1eb9p \u0111\u00f3 th\u00ec v\u1eabn c\u00f2n l\u00e0 \u0111i\u1ec1u b\u00ed \u1ea9n. Nhi\u1ec1u gi\u1ea3 thuy\u1ebft cho r\u1eb1ng c\u00e1c b\u00e0 m\u1eb9 thi\u00ean nhi\u00ean kh\u00f4ng th\u1ec3 l\u00e0m \u0111\u01b0\u1ee3c \u0111i\u1ec1u \u0111\u00f3, m\u00e0 ph\u1ea3i l\u00e0 c\u00e1c th\u1ebf l\u1ef1c ngo\u00e0i v\u0169 tr\u1ee5 hay c\u00e1c th\u1ebf l\u1ef1c si\u00eau nhi\u00ean.<\/p>\n\n\n\n
M\u1ed9t v\u00f2ng tay ng\u01b0\u1eddi l\u1edbn m\u1edbi \u00f4m h\u1ebft c\u1ed9t tr\u1ee5 n\u00e0y \u201cCh\u00fang qu\u1ea3 l\u00e0 k\u1ef3 l\u1ea1\u201d, nh\u00e0 nghi\u00ean c\u1ee9u Mark Kessler c\u1ee7a \u0110\u1ea1i h\u1ecdc California t\u1ea1i Santa Cruz, cho bi\u1ebft. \u00d4ng nh\u1eadn \u0111\u1ecbnh r\u1eb1ng n\u1ebfu nh\u1eefng h\u00ecnh th\u00f9 n\u00e0y xu\u1ea5t hi\u1ec7n \u1edf c\u00e1c v\u00f9ng \u0111\u1ea5t \u1ea5m h\u01a1n, ch\u00fang s\u1ebd \u0111\u01b0\u1ee3c ch\u00fa \u00fd nhi\u1ec1u h\u01a1n. Nh\u01b0ng v\u00ec ng\u01b0\u1eddi ta ch\u1ec9 t\u00ecm th\u1ea5y ch\u00fang trong \u0111i\u1ec1u ki\u1ec7n kh\u00ed h\u1eadu kh\u1eafc nghi\u1ec7t \u1edf v\u00f9ng c\u1ef1c hay tr\u00ean \u0111\u1ec9nh n\u00fai cao, n\u00ean vi\u1ec7c ch\u00fa \u00fd v\u00e0 quan s\u00e1t c\u1ee7a m\u1ecdi ng\u01b0\u1eddi b\u1ecb gi\u1ea3m \u0111i \u0111\u00e1ng k\u1ec3.<\/p>\n\n\n\n
\u0110\u1ec3 gi\u1ea3i \u0111\u00e1p b\u00ed \u1ea9n n\u00e0y, Kessler v\u00e0 c\u1ed9ng s\u1ef1 \u0111\u00e3 ph\u00e1t tri\u1ec3n m\u1ed9t m\u00f4 h\u00ecnh m\u00e1y t\u00ednh 3 chi\u1ec1u v\u1ec1 b\u1ec1 m\u1eb7t \u0111\u00e1, trong \u0111\u00f3 t\u00ednh t\u1edbi t\u1ea5t c\u1ea3 c\u00e1c kh\u1ea3 n\u0103ng bi\u1ebfn \u0111\u1ed5i c\u1ee7a n\u00f3 d\u01b0\u1edbi \u0111i\u1ec1u ki\u1ec7n c\u1ee7a kh\u00ed h\u1eadu, nh\u1ea5t l\u00e0 trong chu k\u1ef3 ng\u00e0y v\u00e0 \u0111\u00eam: N\u1edf ra v\u00ec \u0111\u00f3ng b\u0103ng v\u00e0 co l\u1ea1i khi b\u0103ng tan (hi\u1ec7n t\u01b0\u1ee3ng n\u00e0y r\u1ea5t ph\u1ed5 bi\u1ebfn tr\u00ean c\u00e1c v\u00f9ng \u0111\u1ea5t \u0111\u00f3ng b\u0103ng v\u0129nh c\u1eedu).<\/p>\n\n\n\n
C\u00e1c nh\u00e0 nghi\u00ean c\u1ee9u ph\u00e1t hi\u1ec7n th\u1ea5y r\u1eb1ng: Qua nhi\u1ec1u th\u1ebf k\u1ef7 \u0111\u00f3ng b\u0103ng \u2013 tan b\u0103ng, c\u00e1c t\u1ea3ng \u0111\u00e1 t\u1eeb t\u1eeb nh\u00f4 l\u00ean kh\u1ecfi m\u1eb7t \u0111\u1ea5t, co c\u1ee5m l\u1ea1i v\u1edbi nhau, bao l\u1ea5y nh\u1eefng ch\u1ed7 kh\u00f4ng c\u00f3 \u0111\u00e1, t\u1ea1o ra nh\u1eefng ch\u1ed7 tr\u0169ng gi\u1ed1ng nh\u01b0 nh\u1eefng mi\u1ec7ng h\u1ed1. Tr\u00ean c\u00e1c s\u01b0\u1eddn \u0111\u1ed3i, qu\u00e1 tr\u00ecnh t\u01b0\u01a1ng t\u1ef1 \u0111\u00e3 t\u1ea1o ra nh\u1eefng d\u1ea3i \u0111\u00e1.<\/p>\n\n\n\n
Nh\u00f3m khoa h\u1ecdc nh\u1eadn \u0111\u1ecbnh: Ph\u00e1t hi\u1ec7n n\u00e0y \u0111\u00e3 m\u1edf ra m\u1ed9t h\u01b0\u1edbng m\u1edbi cho gi\u1edbi nghi\u00ean c\u1ee9u, v\u00ec t\u1eeb x\u01b0a \u0111\u1ebfn nay \u0111a ph\u1ea7n c\u00e1c c\u1ea3nh quan \u0111\u01b0\u1ee3c xem l\u00e0 s\u1ea3n ph\u1ea9m c\u1ee7a qu\u00e1 tr\u00ecnh x\u00f3i m\u00f2n, \u0111\u1ee9t g\u00e3y do \u0111\u1ed9ng \u0111\u1ea5t v\u00e0 c\u00e1c qu\u00e1 tr\u00ecnh t\u00e1ch \u0111\u1ea5t kh\u00e1c, ch\u1ee9 ch\u01b0a ai bi\u1ebft \u0111\u1ebfn tr\u01b0\u1eddng h\u1ee3p \u0111\u1ea5t v\u00e0 \u0111\u00e1 t\u1ef1 ph\u00e2n lo\u1ea1i nh\u01b0 trong tr\u01b0\u1eddng h\u1ee3p n\u00e0y.<\/p>\n","protected":false},"excerpt":{"rendered":"
T\u1eeb kh\u00f3a t\u00ecm ki\u1ebfm: Nh\u1eefng b\u00ed \u1ea9n c\u1ee7a nh\u00e2n lo\u1ea1i – Minh Anh C\u00e1c nh\u00e0 nghi\u00ean c\u1ee9u \u0111\u00e3 t\u00ecm ra tung t\u00edch \u201cng\u01b0\u1eddi th\u1ee3 \u0111i\u00eau kh\u1eafc\u201d \u0111\u00e3 t\u1ea1c n\u00ean nh\u1eefng v\u00f2ng \u0111\u00e1 g\u1ea7n nh\u01b0 ho\u00e0n h\u1ea3o tr\u00ean m\u1eb7t \u0111\u1ea5t Alaska v\u00e0 qu\u1ea7n \u0111\u1ea3o Spisbergen \u1edf Na Uy: \u0110\u00f3 l\u00e0 m\u1ed9t qu\u00e1 tr\u00ecnh s\u00e0ng l\u1ecdc t\u1ef1 […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":"","_disable_autopaging":false},"categories":[24],"tags":[],"class_list":["post-17028","post","type-post","status-publish","format-standard","hentry","category-kham-pha"],"_links":{"self":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/17028","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/comments?post=17028"}],"version-history":[{"count":1,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/17028\/revisions"}],"predecessor-version":[{"id":17029,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/17028\/revisions\/17029"}],"wp:attachment":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/media?parent=17028"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/categories?post=17028"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/tags?post=17028"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}