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
M\u1ed9t th\u1eadp k\u1ef7 nay, c\u00e1c nh\u00e0 h\u00e0nh tinh h\u1ecdc tin r\u1eb1ng, nh\u1eefng b\u1ed3n tr\u0169ng thon d\u00e0i ch\u1ea1y song song h\u00e0ng tr\u0103m km v\u00e0 \u1edf v\u00f9ng Pampas h\u00ecnh th\u00e0nh t\u1eeb c\u00e1c cu\u1ed9c va ch\u1ea1m thi\u00ean th\u1ea1ch l\u1edbn. Hi\u1ec7n nay, c\u00f3 gi\u1ea3 thuy\u1ebft l\u1ea1i cho r\u1eb1ng: \u0110\u00f3 ch\u1eb3ng qua ch\u1ec9 l\u00e0 s\u1ea3n ph\u1ea9m \u0111i\u00eau kh\u1eafc c\u1ee7a gi\u00f3 trong h\u00e0ng ngh\u00ecn n\u0103m.<\/p>\n\n\n\n
N\u0103m 1991, m\u1ed9t s\u1ed1 nh\u00e0 \u0111\u1ecba ch\u1ea5t h\u1ecdc Argentina khi bay qua v\u00f9ng Pampas (c\u00f2n g\u1ecdi l\u00e0 \u0111\u1ed3ng b\u1eb1ng Pampean) \u0111\u00e3 quan s\u00e1t th\u1ea5y nh\u1eefng h\u1ed1 tr\u0169ng thon d\u00e0i, nh\u01b0 th\u1ec3 \u0111\u01b0\u1ee3c t\u1ea1c n\u00ean khi c\u00f3 r\u1ea5t nhi\u1ec1u v\u1eadt th\u1ec3 kh\u00e1c nhau lao xi\u00ean xu\u1ed1ng m\u1eb7t \u0111\u1ea5t, \u1edf g\u00f3c g\u1ea7n nh\u01b0 n\u1eb1m ngang. C\u00e1c b\u1ed3n tr\u0169ng n\u00e0y ch\u1ea1y song song v\u1edbi nhau, cho th\u1ea5y c\u00e1c m\u1ea3nh thi\u00ean th\u1ea1ch \u0111\u00e3 bay c\u00f9ng m\u1ed9t h\u01b0\u1edbng. Tr\u00ean m\u1eb7t \u0111\u1ea5t, h\u1ecd c\u0169ng t\u00ecm th\u1ea5y m\u1ed9t s\u1ed1 m\u1ea9u thi\u00ean th\u1ea1ch v\u00e0 c\u00e1c m\u1ea3nh k\u00ednh \u0111\u01b0\u1ee3c sinh ra do nhi\u1ec7t \u0111\u1ed9 cao c\u1ee7a v\u1ee5 va ch\u1ea1m. T\u1eeb nh\u1eefng b\u1eb1ng ch\u1ee9ng n\u00e0y, nh\u00f3m nghi\u00ean c\u1ee9u suy \u0111o\u00e1n m\u1ed9t thi\u00ean th\u1ea1ch l\u1edbn, r\u1ed9ng kho\u1ea3ng 150 \u2013 300 m \u0111\u00e3 v\u0103ng ngang v\u1edbi v\u1eadn t\u1ed1c 90.000km\/h, v\u00e0 s\u01b0\u1ee3t qua m\u1eb7t \u0111\u1ea5t \u1edf g\u00f3c nh\u1ecf h\u01a1n 7 \u0111\u1ed9. S\u1ef1 ki\u1ec7n n\u00e0y x\u1ea3y ra kho\u1ea3ng 10.000 n\u0103m tr\u01b0\u1edbc \u0111\u00e2y, khi \u0111\u00f3 trong v\u00f9ng m\u1edbi ch\u1ec9 c\u00f3 c\u00e1c th\u1ed5 d\u00e2n ch\u00e2u M\u1ef9 sinh s\u1ed1ng.<\/p>\n\n\n\n
C\u00e2u chuy\u1ec7n ly k\u1ef3 n\u00e0y \u0111\u01b0\u1ee3c c\u00f4ng b\u1ed1 1992, khi\u1ebfn r\u1ea5t nhi\u1ec1u nh\u00e0 khoa h\u1ecdc \u201cn\u00f3ng m\u1eaft\u201d. H\u1ecd cho r\u1eb1ng m\u1ed9t t\u1ea3ng thi\u00ean th\u1ea1ch l\u1edbn bay v\u1edbi g\u00f3c th\u1ea5p nh\u01b0 v\u1eady l\u00e0 kh\u00f4ng th\u1ec3 t\u1ed3n t\u1ea1i.<\/p>\n\n\n\n
B\u1ee9c \u1ea3nh c\u1ed5 nh\u1ea5t v\u1ec1 l\u1ed1c xo\u00e1y \u0111\u01b0\u1ee3c ch\u1ee5p ng\u00e0y 28\/8\/1984 t\u1ea1i Nam Dakota.<\/p>\n\n\n\n
Sau m\u1ed9t th\u1eadp k\u1ef7, Philip A.Bland v\u00e0 c\u1ed9ng s\u1ef1 c\u1ee7a \u00f4ng \u0111\u00e3 v\u00e0o nghi\u00ean c\u1ee9u. Khi ph\u00e2n t\u00edch \u1ea3nh v\u1ec7 tinh c\u1ee7a h\u00e0ng ng\u00e0n km2 trong v\u00f9ng Pampas, nh\u00f3m nghi\u00ean c\u1ee9u nh\u1eadn th\u1ea5y b\u1ee9c tranh l\u1ecbch s\u1eed ph\u1ee9c t\u1ea1p h\u01a1n nhi\u1ec1u so v\u1edbi t\u01b0\u1edfng t\u01b0\u1ee3ng c\u1ee7a h\u1ecd. Tuy c\u00e1c h\u1ed1 tr\u0169ng ch\u1ea1y d\u1ecdc kh\u1eafp v\u00f9ng v\u00e0 \u1edf m\u1ed7i v\u00f9ng, \u0111\u1ec1u th\u1eb3ng h\u01b0\u1edbng v\u1edbi nhau, nh\u01b0ng tr\u00ean \u1ea3nh v\u1ec7 tinh, ch\u00fang ch\u1eb3ng gi\u1ed1ng t\u00ed n\u00e0o v\u1edbi c\u00e1c h\u1ed1 thi\u00ean th\u1ea1ch c\u1ea3, m\u00e0 gi\u1ed1ng nh\u01b0 c\u00e1c \u0111\u1ee5n c\u00e1t h\u01a1n. Ng\u00e0y 10\/5 v\u1eeba qua, c\u00f4ng b\u1ed1 tr\u00ean t\u1ea1p ch\u00ed Science, Jay Melosh, c\u1ed9ng s\u1ef1 c\u1ee7a Bland \u1edf \u0110\u1ea1i h\u1ecdc Arizona (M\u1ef9) cho bi\u1ebft: Nh\u1eefng h\u1ed1 tr\u0169ng n\u00e0y l\u00e0 do gi\u00f3 t\u1ea1o n\u00ean, v\u00e0 \u1edf m\u1ed7i \u0111\u1ecba ph\u01b0\u01a1ng, ch\u00fang xoay theo m\u1ed9t h\u01b0\u1edbng kh\u00e1c nhau, theo \u0111\u00fang h\u01b0\u1edbng gi\u00f3 th\u1ecbnh h\u00e0nh trong v\u00f9ng. Xa h\u01a1n n\u1eefa, nh\u00f3m c\u1ee7a Bland k\u1ebft lu\u1eadn r\u1eb1ng nh\u1eefng m\u1ea9u thi\u00ean th\u1ea1ch \u0111\u01b0\u1ee3c t\u00ecm th\u1ea5y t\u1eeb m\u1ed9t th\u1eadp k\u1ef7 tr\u01b0\u1edbc \u0111\u00f3 qu\u1ea3 \u0111\u00fang l\u00e0 s\u1ea3n ph\u1ea9m c\u1ee7a c\u00e1c v\u1ee5 thi\u00ean th\u1ea1ch va ch\u1ea1m v\u1edbi tr\u00e1i \u0111\u1ea5t, nh\u01b0ng \u0111\u00e3 x\u1ea3y ra t\u1eeb r\u1ea5t l\u00e2u. Ch\u00fang b\u1ecb ch\u00f4n v\u00f9i trong \u0111\u1ea5t v\u00e0 cho \u0111\u1ebfn g\u1ea7n \u0111\u00e2y th\u00ec l\u1ed9 ra trong qu\u00e1 tr\u00ecnh gi\u00f3 th\u1ed5i m\u1ea1nh c\u00e1c b\u1ed3n tr\u0169ng. B\u1eb1ng ch\u1ee9ng l\u00e0 c\u00e1c m\u1ea9u thi\u00ean th\u1ea1ch n\u00e0y v\u00e0 c\u1ea3 nh\u1eefng m\u1ea9u m\u1edbi \u0111\u01b0\u1ee3c t\u00ecm th\u1ea5y g\u1ea7n \u0111\u00e2y c\u00f3 h\u00ecnh d\u1ea1ng v\u00e0 th\u1eddi gian h\u00ecnh th\u00e0nh ho\u00e0n to\u00e0n kh\u00e1c nhau, ch\u1ee9ng t\u1ecf ch\u00fang xu\u1ea5t hi\u1ec7n trong nh\u1eefng th\u1eddi \u0111i\u1ec3m \u0111\u1ecba ch\u1ea5t c\u0169ng ho\u00e0n to\u00e0n kh\u00e1c nhau.<\/p>\n\n\n\n
V\u1eady l\u00e0 sau m\u1ed9t th\u1ebf k\u1ef7, b\u00ed m\u1eadt v\u1ec1 nh\u1eefng chi\u1ebfc h\u1ed1 tr\u00ean \u0111\u1ed3ng b\u1eb1ng Pampas \u0111\u00e3 c\u00f3 l\u1eddi gi\u1ea3i h\u1ee3p l\u00fd h\u01a1n c\u1ea3. Nh\u01b0ng trong t\u01b0\u01a1ng lai, c\u00f3 th\u1ec3 l\u1ea1i c\u00f3 nh\u1eefng nh\u1eadn \u0111\u1ecbnh m\u1edbi v\u1ec1 nh\u1eefng chi\u1ebfc h\u1ed7 b\u00ed \u1ea9n. V\u00e0 ch\u00fang ta h\u00e3y c\u00f9ng ch\u1edd xem.<\/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 M\u1ed9t th\u1eadp k\u1ef7 nay, c\u00e1c nh\u00e0 h\u00e0nh tinh h\u1ecdc tin r\u1eb1ng, nh\u1eefng b\u1ed3n tr\u0169ng thon d\u00e0i ch\u1ea1y song song h\u00e0ng tr\u0103m km v\u00e0 \u1edf v\u00f9ng Pampas h\u00ecnh th\u00e0nh t\u1eeb c\u00e1c cu\u1ed9c va ch\u1ea1m thi\u00ean th\u1ea1ch l\u1edbn. Hi\u1ec7n nay, c\u00f3 gi\u1ea3 thuy\u1ebft l\u1ea1i […]<\/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-16992","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\/16992","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=16992"}],"version-history":[{"count":1,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/16992\/revisions"}],"predecessor-version":[{"id":16993,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/16992\/revisions\/16993"}],"wp:attachment":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/media?parent=16992"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/categories?post=16992"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/tags?post=16992"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}