Vilkitsky Island (East Siberian Sea) Russian Arctic Ocean Hydrographic Expedition led by Boris Vilkitsky on the ships "Taymyr" and "Vaygach" on behalf of the Russian Hydrographic Service in order to chart the last blank areas of Russian maps. Vilkitsky Island (East Siberian Sea) Vilkitsky Island (; "Ostrov Vilkitskogo") is the southernmost island of the De Long group in the northern part of the East Siberian Sea. Administratively Vilkitsky Island belongs to the Sakha Republic administrative division of the Russian Federation. The island is named after Russian hydrographer Boris Vilkitsky. The island is outside of the limits of permanent ice and is unglaciated. At barely Vilkitsky
West Siberian petroleum basin West Siberian petroleum basin The West Siberian petroleum basin (variously known as the West Siberian hydrocarbon province, Western Siberian oil basin, etc.) is the largest hydrocarbon (petroleum and natural gas) basin in the world covering an area of about 2.2 million km. Geographically it corresponds to the West Siberian plain. From continental West Siberia, it extends into the Kara Sea as the East-Prinovozemelsky field. The public domain U.S. Geological Survey Bulletin 2201-G describes the basin as follows. The basin occupies a swampy plain between the Ural Mountains and the Yenisey River. On the north, the basin extends offshore into the