부산대학교 도서관

For the first time, AMS radiocarbon dating was used to date microinclusions of organic material extracted directly from Holocene syngenetic ice wedges in the Noprthern European part of Russia, on the coast of Baydarata Bay near the village of Yarynskaya, 500 m south of the mouth of the Ngarka-Tambyakha River (68°51′20.27″ N, 66°52′6.51″ E). Dated ice wedges formed about 6.4, 5.0, and 1.9 ka BP. According to isotope oxygen data, the average January air paleotemperature in the Middle and Late Holocene on the coast of Baydarata Bay was calculated. It is shown that the average January air temperature during this period here varied from about −20 to −25°C. However, during milder winters it could have been about −18°C. [ABSTRACT FROM AUTHOR]