Chicago \u00dcniversitesinde yap\u0131lan bir \u00e7al\u0131\u015fma, \u00fcst manto katman\u0131n\u0131n en alt\u0131nda, D\u00fcnya\u2019y\u0131 \u00e7evreleyen \u015fa\u015f\u0131rt\u0131c\u0131 bir ak\u0131\u015fkan kaya katman\u0131 olabilece\u011fini g\u00f6steriyor.
\nSonu\u00e7lar, Fiji\u2019nin yak\u0131nlar\u0131ndaki B\u00fcy\u00fck Okyanusta meydana gelen, derin depremin ard\u0131ndan adalardaki GPS sens\u00f6rleri taraf\u0131ndan kaydedilen kal\u0131c\u0131 hareketin hesaplanmas\u0131yla yap\u0131ld\u0131. 22 \u015eubat\u2019ta Nature\u2019da yay\u0131nlanan \u00e7al\u0131\u015fma, D\u00fcnya\u2019n\u0131n mantosunun ak\u0131\u015fkanl\u0131\u011f\u0131n\u0131 \u00f6l\u00e7mek i\u00e7in yeni bir y\u00f6ntem g\u00f6steriyor.
\n\u201cManto D\u00fcnya\u2019n\u0131n en b\u00fcy\u00fck b\u00f6l\u00fcm\u00fcn\u00fc olu\u015ftursa da, hala hakk\u0131nda bilmedi\u011fimiz \u00e7ok \u015fey var.\u201d diyor Chicago \u00dcniversitesi\u2019ndeki jeofizik\u00e7i ve \u00e7al\u0131\u015fman\u0131n ana yazar\u0131 Sunyoung Park ve ekliyor, \u201cBu derin depremleri bu sorular\u0131 ara\u015ft\u0131rmak i\u00e7in kullanarak \u00f6\u011frenebilece\u011fimiz \u00e7ok fazla \u015fey var.\u201d<\/p>\n
Mantoda sakl\u0131 gizemler Chicago \u00dcniversitesinde yap\u0131lan bir \u00e7al\u0131\u015fma, \u00fcst manto katman\u0131n\u0131n en alt\u0131nda, D\u00fcnya\u2019y\u0131 \u00e7evreleyen \u015fa\u015f\u0131rt\u0131c\u0131 bir ak\u0131\u015fkan kaya katman\u0131 olabilece\u011fini g\u00f6steriyor. Sonu\u00e7lar, Fiji\u2019nin yak\u0131nlar\u0131ndaki B\u00fcy\u00fck Okyanusta meydana gelen, derin depremin ard\u0131ndan adalardaki GPS sens\u00f6rleri taraf\u0131ndan kaydedilen kal\u0131c\u0131 hareketin hesaplanmas\u0131yla yap\u0131ld\u0131. 22 \u015eubat\u2019ta Nature\u2019da yay\u0131nlanan \u00e7al\u0131\u015fma, D\u00fcnya\u2019n\u0131n mantosunun ak\u0131\u015fkanl\u0131\u011f\u0131n\u0131 \u00f6l\u00e7mek i\u00e7in yeni bir y\u00f6ntem g\u00f6steriyor. \u201cManto D\u00fcnya\u2019n\u0131n en […]<\/p>\n","protected":false},"author":3113,"featured_media":57836,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[19,232],"tags":[8837,691,274,8873,2987],"class_list":["post-57833","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-bilim-gundemi","category-yerbilimleri","tag-6-subat-2023-depremi","tag-deprem","tag-dunya","tag-manto","tag-tektonik"],"acf":[],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t
\n<\/strong>\u015ea\u015f\u0131rt\u0131c\u0131 bir \u015fekilde hala D\u00fcnya hakk\u0131nda hala \u00e7ok az \u015fey biliyoruz. Artan \u0131s\u0131, matkab\u0131 tam anlam\u0131yla eritmeden \u00f6nce, birinin kazmay\u0131 ba\u015fard\u0131\u011f\u0131 en uzak nokta yakla\u015f\u0131k olarak yedi bu\u00e7uk mildir. Bu nedenle bilim insanlar\u0131, gezegeni olu\u015fturmak i\u00e7in sismik dalgalar\u0131n kabuk, manto ve \u00e7ekirdek dahil olmak \u00fczere farkl\u0131 katmanlar\u0131 i\u00e7 i\u00e7e nas\u0131l ge\u00e7irdi\u011fi gibi ipu\u00e7lar\u0131n\u0131 kulland\u0131lar.
\nBiliminsanlar\u0131n\u0131 engelleyen \u015fey manto tabakas\u0131n\u0131n ne kadar ak\u0131\u015fkan oldu\u011funun kesin \u00f6l\u00e7\u00fclememi\u015f olunmas\u0131d\u0131r. Manto, kabu\u011fun alt\u0131ndaki tabakad\u0131r. Kayadan olu\u015fmu\u015ftur fakat derinlerdeki yo\u011fun s\u0131cakl\u0131kta ve bas\u0131n\u00e7ta, kaya viskoza d\u00f6ner. (bal veya katran gibi \u00e7ok yava\u015f akar)
\n\u201cManto\u2019nun tam olarak ne h\u0131zda akt\u0131\u011f\u0131n\u0131 \u00f6\u011frenmek istiyoruz \u00e7\u00fcnk\u00fc bu t\u00fcm D\u00fcnya\u2019n\u0131n evrimini etkiliyor. Gezegenin ne kadar \u0131s\u0131y\u0131 ne kadar s\u00fcre tuttu\u011funu ve D\u00fcnya\u2019n\u0131n materyallerinin zamanla nas\u0131l d\u00f6n\u00fc\u015ft\u00fcr\u00fcld\u00fc\u011f\u00fcn\u00fc etikiliyor.\u201d diye a\u00e7\u0131kl\u0131yor Park.
\nPark, mantonun \u00f6zelliklerini \u00e7ok derin depremlerin arkas\u0131ndaki matemati\u011fe \u00e7al\u0131\u015farak sonu\u00e7lar\u0131 elde etmek i\u00e7in \u00f6zel bir yol oldu\u011funu d\u00fc\u015f\u00fcnd\u00fc.
\nHaberlerde duydu\u011fumuz \u00e7o\u011fu depremler g\u00f6receli olarak s\u0131\u011fd\u0131r ve D\u00fcnya\u2019n\u0131n en \u00fcst kabu\u011fundan kaynaklan\u0131r. Ancak bazen, y\u00fczeyden 725 km derinli\u011fe dayanan depremler de olur. Bu depremler s\u0131\u011f depremler kadar iyi incelenmemi\u015ftir \u00e7\u00fcnk\u00fc insan yerle\u015fmelerine g\u00f6re y\u0131k\u0131c\u0131 de\u011fillerdir. Ancak mantoya uzand\u0131klar\u0131 i\u00e7in Park, mantonun davran\u0131\u015f\u0131n\u0131 anlamak i\u00e7in iyi bir yol olabilece\u011fini d\u00fc\u015f\u00fcnd\u00fc.
\nPark ve i\u015f arkada\u015flar\u0131 2018\u2019de Fiji\u2019de meydana gelen belirli bir depremi incelediler. B\u00fcy\u00fckl\u00fc\u011f\u00fc 8.2 idi ve ayr\u0131ca 563 km derinli\u011findeydi, bu y\u00fczden b\u00fcy\u00fck zararlara ve \u00f6l\u00fcmlere yol a\u00e7mad\u0131.
\nYine de, bilim insanlar\u0131 adadaki GPS sens\u00f6rlerinden gelen verileri analiz etti\u011finde deprem bitse bile D\u00fcnya\u2019n\u0131n hareket etmeye devam etti\u011fini g\u00f6rd\u00fcler.
\nVeriler, depremi takip eden aylarda D\u00fcnya\u2019n\u0131n hala hareket etti\u011fini ve rahats\u0131zl\u0131\u011f\u0131n ard\u0131ndan yerle\u015fti\u011fini ortaya \u00e7\u0131kard\u0131. Hatta y\u0131lar sonra bile, Tonga(depremin meydana geldi\u011fi \u00fclke) hala yava\u015f\u00e7a y\u0131lda 1 cm h\u0131zla a\u015fa\u011f\u0131 do\u011fru hareket ediyor.
\nPark, \u201cbunu i\u00e7inden bir ka\u015f\u0131k ald\u0131ktan sonra yava\u015f\u00e7a d\u00fczle\u015fen bir bal kavanozu gibi d\u00fc\u015f\u00fcnebilirsiniz, ancak bu dakikalar yerine y\u0131llar al\u0131r.\u201d diyor.
\nBu derin depremlerin devam\u0131nda gelen deformasyonun ilk somut g\u00f6zlemidir, fenomen s\u0131\u011f depremlerde daha \u00f6nce g\u00f6zlenmi\u015fti fakat uzmanlar etkinin derin depremler i\u00e7in g\u00f6zlemlenemeyecek kadar k\u00fc\u00e7\u00fck olabilece\u011fini d\u00fc\u015f\u00fcnm\u00fc\u015ft\u00fc.
\nPark ve meslekta\u015flar\u0131 bu g\u00f6zlemi mantonun viskozitesini anlamak i\u00e7in kulland\u0131lar.
\nD\u00fcnyan\u0131n zamanla nas\u0131l deforme oldu\u011funu inceleyerek, mantonun kalan\u0131ndan daha az viskoza sahip \u00fcst mantonun alt\u0131nda oturan 50 mil kal\u0131nl\u0131\u011f\u0131ndaki tabaka hakk\u0131nda kan\u0131t buldular. Bu katman\u0131n t\u00fcm d\u00fcnyaya yay\u0131labilece\u011fini d\u00fc\u015f\u00fcn\u00fcyorlar.
\nD\u00fc\u015f\u00fck viskoz katmanlar, di\u011fer g\u00f6zlemleri, sismologlar\u0131n \u00fcst mantonun dibinde ayn\u0131 derinlikte yer alan durgun kaya levhalar\u0131n\u0131n \u00e7ok fazla hareket etmedi\u011fini \u00f6ne s\u00fcrmeleriyle a\u00e7\u0131klayabilirdi.
\nPark, \u201cBu \u00f6zellikleri modellerle \u00e7o\u011faltmak zor fakat bu \u00e7al\u0131\u015fmada bulunan zay\u0131f katman bunu yapmay\u0131 kolayla\u015ft\u0131r\u0131yor.\u201d Dedi.
\nAyr\u0131ca D\u00fcnya\u2019n\u0131n \u0131s\u0131y\u0131 nas\u0131l ta\u015f\u0131d\u0131\u011f\u0131, zaman i\u00e7erisinde kabuk, \u00e7ekirdek ve manto aras\u0131ndaki malzemeleri nas\u0131l d\u00f6n\u00fc\u015ft\u00fcrd\u00fc\u011f\u00fc ve kar\u0131\u015ft\u0131rd\u0131\u011f\u0131na dair bir uygulamas\u0131 var.<\/p>\n","protected":false},"excerpt":{"rendered":"