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Oxygen Stable isotope variation in Late Holocene ice wedges in Yamal Peninsula and Svalbardстатья
Статья опубликована в журнале из списка RSCI Web of Science
Статья опубликована в журнале из списка Web of Science и/или ScopusДата последнего поиска статьи во внешних источниках: 16 февраля 2016 г.
- Авторы: Vasil'chuk Yu K., Budantseva N.A., Christiansen H.H., Chizhova Ju N., Vasil'chuk A.C., Zemskova A.M.
- Журнал: Geography, Environment, Sustainability
- Том: 8
- Номер: 3
- Год издания: 2015
- Издательство: Издательство Русского географического общества
- Местоположение издательства: Москва
- Первая страница: 36
- Последняя страница: 54
- Аннотация: 1. Thick syngenetic ice-wedges in the upper profile of the high floodplains in the Erkutayakha River valley in the Southern Yamal Peninsula and in the Adventdalen valley in Svalbard, separated by a distance of 2000 km, have been compared with respect to isotope values. These ice-wedges developed during the last 2-3 ka and are continuing to grow at present. 2. Ice-wedges dated about 2-3 ka BP have been studied in different permafrost regions i.e. Alaska, Siberia, Northern China, Yakutia and Chukotka that implies an active ice-wedge growth during the Late Holocene. 3. For ice-wedges formed during 2-3 ka in the subarctic Northern Hemisphere permafrost zone, variations of δ18O values do not exceed 2-3.5‰ even for ice-wedges located in significantly differing climatic and geocryological conditions. In the ice-wedge from Erkutayakha River valley in Southern Yamal Peninsula the δ18О values varied by 2.6‰ (from –18.0 to –20.6‰), and in the ice-wedge from Adventdalen valley the δ18О values varied by 3.2‰ (from –12.2 ‰ to –15.4‰). 4. During the last 2-3 ka in the subarctic permafrost changes of mean winter air temperatures did not exceed 3оС; these changes have been also confirmed by comparison with proxy data (dendrochronological, palynological and microfaunistic) in different regions of the Northern Hemisphere.
- Добавил в систему: Чижова Юлия Николаевна
Прикрепленные файлы
| № | Имя | Описание | Имя файла | Размер | Добавлен |
|---|---|---|---|---|---|
| 1. | Vasilchuk_2015_GES_Yamal_Svalbard_ice_wedges_1.pdf | Vasilchuk_2015_GES_Yamal_Svalbard_ice_wedges_1.pdf | 1,0 МБ | 1 октября 2015 [vasilchuk] |