{"id":12038,"date":"2018-07-29T07:12:29","date_gmt":"2018-07-29T04:12:29","guid":{"rendered":"http:\/\/109.232.216.219\/~bilimvegelecek\/?p=12038"},"modified":"2018-07-27T10:42:04","modified_gmt":"2018-07-27T07:42:04","slug":"yasamis-en-buyuk-kus","status":"publish","type":"post","link":"https:\/\/bilimvegelecek.com.tr\/index.php\/2018\/07\/29\/yasamis-en-buyuk-kus","title":{"rendered":"Ya\u015fam\u0131\u015f en b\u00fcy\u00fck ku\u015f"},"content":{"rendered":"

National Academy of Sciences<\/em>\u2019da yay\u0131mlanan bir bulguya g\u00f6re, ya\u015fam\u0131\u015f en b\u00fcy\u00fck ku\u015f ke\u015ffedilmi\u015f olabilir. Steroid alm\u0131\u015f mart\u0131ya benzeyenbuku\u015funkanatgeni\u015fli\u011finin6,1-7,4 m aras\u0131nda oldu\u011fu belirlendi.<\/p>\n

G\u00fcney Karolina\u2019da 30 y\u0131l \u00f6nce bulunan, uzunlu\u011fu 25 m olarak hesaplanan bir fosil, yeni bir t\u00fcr olarak adland\u0131r\u0131lm\u0131\u015ft\u0131. Connecticut Bruce M\u00fczesi Bilim Sorumlusu Daniel Ksepka\u2019ya g\u00f6re yeni buluntular, hem boyutlar\u0131, hem de saklanma ko\u015fullar\u0131 a\u00e7\u0131s\u0131ndan iki y\u00f6nl\u00fc ses getirecek gibi g\u00f6r\u00fcn\u00fcyor. Materyal deniz dibinde adeta g\u00f6m\u00fclerek sakland\u0131\u011f\u0131 i\u00e7in, t\u00fcm le\u015f\u00e7il hayvanlar\u0131n sald\u0131r\u0131lar\u0131ndan korunarak kalabilmi\u015f. A\u015f\u0131nmalardan \u00f6nce ke\u015ffedildi\u011finden, \u00f6zellikle kafatas\u0131 ve narin kemikleri son derece \u00e7arp\u0131c\u0131 bir bi\u00e7imde ortada.<\/p>\n

Ara\u015ft\u0131rmac\u0131lara g\u00f6re bu son \u00f6rnek, daha \u00f6nce G\u00fcney Amerika\u2019da bulunmu\u015f olan, Argentavis magnificens<\/em> ad\u0131 verilen, kanat geni\u015fli\u011fi 5,7-6,1 olan ve yakla\u015f\u0131k 6 milyon y\u0131l \u00f6nce ya\u015fad\u0131\u011f\u0131 d\u00fc\u015f\u00fcn\u00fclen tepeli akbaban\u0131n rekorunu elinden alabilir.<\/p>\n

Biliminsanlar\u0131 bu yeni dev ku\u015fa Pelagornis sandersi<\/em> ad\u0131n\u0131 verdiler. G\u00f6\u00e7er albatroslar\u0131n iki kat\u0131 b\u00fcy\u00fckl\u00fc\u011f\u00fcnde olan bu ku\u015fun, ya\u015fam\u0131\u015f en b\u00fcy\u00fck ku\u015f oldu\u011funu d\u00fc\u015f\u00fcn\u00fcyorlar. Bu ku\u015f da, t\u0131pk\u0131 albatroslar gibi zaman\u0131n\u0131 bir deniz ku\u015fu olarak okyanus \u00fczerinde ani sald\u0131r\u0131lar yaparak, bal\u0131k ve m\u00fcrekkepbal\u0131\u011f\u0131 avlayarak ge\u00e7irmi\u015f olmal\u0131yd\u0131.<\/p>\n

Teorik modelin havada kanat \u00e7\u0131rpma eylemi, boyutu dikkate al\u0131nd\u0131\u011f\u0131nda abart\u0131l\u0131 g\u00f6r\u00fcnse de, ara\u015ft\u0131rmac\u0131lar hava ak\u0131m\u0131n\u0131 kullanarak okyanus \u00fczerinde gayet g\u00fczel havalanabilece\u011fine inan\u0131yorlar. \u0130nce hafif kanatlar ve i\u00e7i bo\u015f kemikler bu ku\u015fu g\u00fc\u00e7l\u00fc bir plan\u00f6r haline getirmi\u015f gibi g\u00f6r\u00fcn\u00fcyor. Dr. Ksepka\u2019ya g\u00f6re \u00e7ok h\u0131zl\u0131 ve yetenekli oldu\u011fu tart\u0131\u015f\u0131lmaz.<\/p>\n

Ksepka, \u201cBilgisayar modelleri \u00e7\u0131kabilece\u011fi y\u00fcksekli\u011fin her bir birimi i\u00e7in \u00e7ok uzun bir mesafede s\u00fcz\u00fclmeye izin veren, y\u00fckse\u011fe kald\u0131racak bir kayma oran\u0131na sahip oldu\u011funu destekliyor\u201d diyor. Okyanus \u00fczerinde her saniyede 10 metre y\u00fckseldi\u011fi, b\u00f6ylelikle 100 m ko\u015fu rekorunda insanlardan daha \u00f6nde oldu\u011fu g\u00f6r\u00fcl\u00fcyor. Bunun tersine, muhtemelen karada zariflikten epeyce uzak bir u\u00e7ucu olmal\u0131. Kara \u00fczerindeki k\u0131s\u0131tl\u0131 zaman\u0131n\u0131 hantal g\u00f6vdesiyle etrafta y\u00fcr\u00fcyerek ge\u00e7irdi\u011fi d\u00fc\u015f\u00fcn\u00fcl\u00fcyor.<\/p>\n

Havalanmas\u0131 da muhtemelen \u00e7irkin g\u00f6r\u00fcn\u00fcyordu. Teorik modelde g\u00f6r\u00fcld\u00fc\u011f\u00fc kadar\u0131yla, oldu\u011fu yerde ayakta durup kanat \u00e7\u0131rparak havalanmaya haz\u0131rlan\u0131yordu. Baz\u0131 ara\u015ft\u0131rmac\u0131lar, P. sandersi<\/em>\u2019nin yoku\u015f a\u015fa\u011f\u0131 paytak paytak y\u00fcr\u00fcyerek f\u0131rt\u0131nay\u0131 yakalamay\u0131 bekledi\u011fini ve bu \u015fekilde havaland\u0131\u011f\u0131n\u0131 d\u00fc\u015f\u00fcn\u00fcyorlar.<\/p>\n

Neslinin neden t\u00fckenmi\u015f olabilece\u011fi hen\u00fcz anla\u015f\u0131lamayan bu canl\u0131n\u0131n, yakla\u015f\u0131k 3 milyon y\u0131l \u00f6nce aniden ortadan kayboldu\u011fu, ancak ondan \u00f6nce epeyce yayg\u0131n olarak var oldu\u011fu d\u00fc\u015f\u00fcn\u00fcl\u00fcyor.<\/p>\n","protected":false},"excerpt":{"rendered":"

National Academy of Sciences\u2019da yay\u0131mlanan bir bulguya g\u00f6re, ya\u015fam\u0131\u015f en b\u00fcy\u00fck ku\u015f ke\u015ffedilmi\u015f olabilir. Steroid alm\u0131\u015f mart\u0131ya benzeyenbuku\u015funkanatgeni\u015fli\u011finin6,1-7,4 m aras\u0131nda oldu\u011fu belirlendi. G\u00fcney Karolina\u2019da 30 y\u0131l \u00f6nce bulunan, uzunlu\u011fu 25 m olarak hesaplanan bir fosil, yeni bir t\u00fcr olarak adland\u0131r\u0131lm\u0131\u015ft\u0131. Connecticut Bruce M\u00fczesi Bilim Sorumlusu Daniel Ksepka\u2019ya g\u00f6re yeni buluntular, hem boyutlar\u0131, hem de saklanma […]<\/p>\n","protected":false},"author":42,"featured_media":25406,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[163,19],"tags":[983,661],"class_list":["post-12038","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-126-sayi","category-bilim-gundemi","tag-canlilar","tag-kuslar"],"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