Back to Search
Start Over
New insights towards an integrated understanding of NE Asian monsoon during mid to late Holocene
- Source :
- Quaternary Science Reviews. 254:106793
- Publication Year :
- 2021
- Publisher :
- Elsevier BV, 2021.
-
Abstract
- Speleothem records from NE Asia are essential to understand the spatial patterns of the Asian Summer Monsoon (ASM) variability. In this paper, we present a new high-resolution and chronologically well-resolved speleothem record from Liu-li (LL) cave, NE China, through δ18O, δ13C and Sr/Ca ratio characterizing a dynamic ASM history over the past 6680 years. The LL δ18O record shows a long-term trend to higher values, following the North Hemisphere summer insolation (NHSI), with the exception of the last 2 kyr characterized by a negative δ18O excursion. The ‘2-kyr shift’ is evident in NE Asia over the past 2 kyr, originally inferred from the speleothem δ18O negative excursion in South China, as well as in many other proxy records from East China, but it merely manifests a flat trend in most of the western East Asian Summer Monsoon (EASM) and Indian Summer Monsoon (ISM) regions, rather than a negative excursion. On multi-centennial to millennial timescales, the intensification of the Tsushima Warm Current (TWC) can amplify rainfall on both sides of the Japan Sea. A close comparison between the monsoon reconstruction and the cultural changes in NE Asia suggests contemporary climatic and cultural regime-shifts, implying an important role of the ASM weakening in the collapse of Neolithic and Early Bronze cultures in this region.
- Subjects :
- 010506 paleontology
Archeology
Global and Planetary Change
geography
geography.geographical_feature_category
010504 meteorology & atmospheric sciences
δ18O
Excursion
Speleothem
Geology
Monsoon
01 natural sciences
Cave
13. Climate action
East Asian Monsoon
Physical geography
China
Ecology, Evolution, Behavior and Systematics
Holocene
0105 earth and related environmental sciences
Subjects
Details
- ISSN :
- 02773791
- Volume :
- 254
- Database :
- OpenAIRE
- Journal :
- Quaternary Science Reviews
- Accession number :
- edsair.doi...........096ba531cbe376d5600e8ccc3d5f20b8