Библиографическое описание:ТЫСЯЧЕЛЕТНЯЯ ВОСТОЧНО-ТЫВИНСКАЯ ХРОНОЛОГИЯ ЭКСТРЕМАЛЬНЫХ КЛИМАТИЧЕСКИХ СОБЫТИЙ ПО ЛИСТВЕННИЦЕ СИБИРСКОЙ ДЛЯ ВЕРХНЕЙ ГРАНИЦЫ ЛЕСА : научное издание / В. В. Баринов [и др.]. - Текст : непосредственный // Евразия в кайнозое. Стратиграфия, палеоэкология, культуры. - 2017. - № 6. - С. 84-88. - ISSN 2307-8243. Перевод заглавия: EASTERN TUVA LONG CHRONOLOGY OF EXTREME CLIMATIC EVENTS OF THE SIBERIAN LARCH TIMBERLINE
Аннотация:Анализ встречаемости аномалий анатомической структуры годичных колец (морозобойные и светлые кольца, флуктуации в структуре годичного кольца) и выпавших колец позволил построить хронологию климатических экстремумов за период с 805 по 2014 г. для Восточной Тывы. Применение комплексного подхода, основанного на привлечении пяти различных параметров для оценки силы экстремальных событий, позволило обозначить пять событий 1198-1202, 1204-1205, 1257- 1259, 1783-1785 и 1884 гг., охвативших обширные территории в Северном полушарии. Выделенные годы верифицируются с данными об извержении вулканов стратосферного типа и историческими сведениями.
Nowadays, a continious study of long tree-ring chronologies for over 1000 years for the sub-Arctic and Alpine regions of Siberia is exercised. They are a unique instrument for the climatic reconstruction. Usually, when creating a chronology it is used some standard parameters such as width, density and isotopic composition of tree rings, however, the anomalies in tree-ring structures is hardly used. Although, it provides unique data pertaining to harsh climatic conditions that affect woody vegetation growth and weather conditions during summer months. Today, only two long tree-ring chronologies of extreme climatic events have been made for Siberia, including ones for the north of western Siberia and central Altai. In the article we present previous results of constructing the third millennia tree-ring chronologies of extreme climatic events based on analysis of meeting of anomalies in the anatomical structure of tree rings (frost and light rings and fluctuations in the structure of the annual rings) and missing rings for the territory of Eastern Tuva. Using an integrated approach, we evaluated extreme events based on five parameters: intensity, territorial cover-age, formation of anomalies and missing rings per year, minimum growth and duration. Our initial analysis revealed prominent events in 935, 1198-1202, 1204-1205, 1257-1259,1450-1451, 1684-1685, 1783-1785 and 1884. Verification of these extreme events using data collected from other regions allowed us to identify five events during 1198-1202, 1204- 1205, 1257-1259, 1783-1785 and 1884 that covered vast areas in the Northern Hemisphere. During these years, ice cores suggest the occurrence of stratospheric volcanic eruptions, bursts of increased acidity and aerosol levels, etc., and historical sources suggest the presence of strong cold weather, frost, crop failure, etc.
