Open AccessClimate Events and Cycles During the Last Glacial-Interglacial Transition
Author(s) -
Eun Hee Lee,
Dae-Young Lee,
Mi-Young Park
Publication year - 2017
Publication title -
journal of astronomy and space sciences
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.273
H-Index - 11
eISSN - 2093-5587
pISSN - 2093-1409
DOI - 10.5140/jass.2017.34.3.207
Subject(s) - interglacial , glacial period , younger dryas , ice core , climatology , geology , arctic , oceanography , climate change , holocene , physical geography , geography , paleontology
During the last glacial–interglacial transition, there were multiple intense climatic events such as the Bølling–Allerød\udwarming and Younger Dryas cooling. These events show abrupt and rapid climatic changes. In this study, the climate events\udand cycles during this interval are examined through wavelet analysis of Arctic and Antarctic ice-core 18O and tropical\udmarine 14C records. The results show that periods of ~1383–1402, ~1029–1043, ~726–736, ~441–497 and ~202–247 years are\uddominant in the Arctic region, whereas periods of ~1480, ~765, ~518, ~311, and ~207 years are prominent in the Antarctic\udTALDICE. In addition, cycles of ~1019, ~515, and ~209 years are distinct in the tropical region. Among these variations, the\udde Vries cycle of ~202–209 years, correlated with variations in solar activity, was detected globally. In particular, this cycle\udshows a strong signal in the Antarctic between about 13,000 and 10,500 yr before present (BP). In contrast, the Eddy cycle\udof ~1019–1043 years was prominent in Greenland and the tropical region, but was not detected in the Antarctic TALDICE\udrecords. Instead, these records showed that the Heinrich cycle of ~1480 year was very strong and significant throughout the\udlast glacial–interglacial interval