Sedimentary evolution of the East China Sea with implications for the relationship between the East Asian winter and summer monsoon over the past 6.3 ka
Wenzhe Lyu , Tengfei Fu , Guangquan Chen , Qiao Su , Wenquan Liu , Yancheng Wang , Zhen Cui , Hongjun Yu , Xingyong Xu
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引用次数: 0
Abstract
Sediments in the muddy areas of marginal seas of East China can serve as natural archives of global climate and environmental changes. Studies of these sediments can offer valuable insights for paleoclimate changes. This study examined S04-2, a core located in the central of the inner-shelf muddy area of the East China Sea, to reveal the evolutionary history since 12 ka BP and investigate the relationship between the East Asian Winter Monsoon (EAWM) and East Asian Summer Monsoon (EASM). On a centennial timescale, the EASM was negatively correlated with EAWM and this relationship is mainly influenced by solar radiation, wherein increases or weakening of solar radiation led to a negative or positive correlation between the EASM and EAWM. Additionally, it was observed that the sustained negative correlation during the periods of 5.1–4.3 ka BP and 2.0–0.6 ka BP was modulated by the strong North Atlantic Oscillation (NAO), resulting in periods of heightened social sensitivity in ancient China during 2.0–0.6 ka BP.
华东边缘海泥质区域的沉积物可作为全球气候和环境变化的天然档案。对这些沉积物的研究可为古气候变化提供有价值的信息。本研究对位于东海内陆泥质区中部的S04-2岩芯进行了研究,揭示了自公元前12ka以来的演变历史,并探讨了东亚冬季季候风与东亚夏季季候风之间的关系。在百年时间尺度上,东亚冬季季候风与东亚夏季季候风呈负相关,这种关系主要受太阳辐射的影响,太阳辐射的增加或减弱导致东亚冬季季候风与东亚夏季季候风呈负相关或正相关。此外,研究还发现,在公元前 5.1-4.3 kaP 和公元前 2.0-0.6 kaP 期间,这种持续的负相关关系受到强烈的北大西洋涛动(NAO)的影响,导致公元前 2.0-0.6 kaP 期间中国古代社会敏感性增强。
期刊介绍:
Journal of Asian Earth Sciences has an open access mirror journal Journal of Asian Earth Sciences: X, sharing the same aims and scope, editorial team, submission system and rigorous peer review.
The Journal of Asian Earth Sciences is an international interdisciplinary journal devoted to all aspects of research related to the solid Earth Sciences of Asia. The Journal publishes high quality, peer-reviewed scientific papers on the regional geology, tectonics, geochemistry and geophysics of Asia. It will be devoted primarily to research papers but short communications relating to new developments of broad interest, reviews and book reviews will also be included. Papers must have international appeal and should present work of more than local significance.
The scope includes deep processes of the Asian continent and its adjacent oceans; seismology and earthquakes; orogeny, magmatism, metamorphism and volcanism; growth, deformation and destruction of the Asian crust; crust-mantle interaction; evolution of life (early life, biostratigraphy, biogeography and mass-extinction); fluids, fluxes and reservoirs of mineral and energy resources; surface processes (weathering, erosion, transport and deposition of sediments) and resulting geomorphology; and the response of the Earth to global climate change as viewed within the Asian continent and surrounding oceans.