气候变化领域集成服务门户(CCPortal): Holocene coastal environmental change and ENSO-driven hydroclimatic variability in East Asia

CCPortal

DOI	10.1016/j.quascirev.2019.07.041
	Holocene coastal environmental change and ENSO-driven hydroclimatic variability in East Asia
	Lim J.; Lee J.-Y.; Hong S.-S.; Park S.; Lee E.; Yi S.
发表日期	2019
ISSN	0277-3791
起始页码	75
结束页码	86
卷号	220
英文摘要	Understanding the past natural behavior of coastal hydroclimates at multi-centennial time scales is essential for planning coastal strategies in preparation for anticipated climate change. We investigated the elemental and isotopic features of 10-m-long coastal sedimentary cores from Goheung Bay located on the southern coast of Korea to extract such natural variability. Based on the relationships among total organic carbon (TOC), total sulfur (TS) content, and their isotopic values (δ13CTOC and δ34STS), we reconstructed the long-term coastal evolution in the area and compared this with the reported Holocene sea level change. Time series data of the titanium (Ti)/aluminum (Al) ratio, as a proxy for riverine terrigenous input, revealed a strong link to terrestrial plant contribution, as indicated by δ13CTOC variability, suggesting past hydroclimatic change in the study area. The short-term variability of Ti/Al ratios correlated well with flooding events reconstructed for the Nakdong River in Korea. Moreover, periods in which the Ti/Al ratio was higher corresponded to those of stronger El Niño Southern Oscillation (ENSO) activity, suggesting ENSO-driven hydroclimatic changes in southern Korea. Especially, the periods of higher Ti/Al ratios during the late Holocene corresponded to a higher frequency of typhoon-driven overwash events along the southwestern coast of Japan. These similarities suggest that past freshwater input events along the southern coast of Korea were influenced considerably by typhoon-driven heavy rains during stronger ENSO activity. Spectral analysis of the Ti/Al ratios revealed significant periodicities of 1550, 780, 140, 120 and 105 years, suggesting centennial to millennial-timescale variability in hydroclimatic change and typhoon activity over East Asia. © 2019 The Authors
英文关键词	Carbon isotope (δ13C); El Niño Southern Oscillation (ENSO); Flooding; Holocene; Sulfur isotope (δ34S); Tropical typhoon
语种	英语
scopus关键词	Atmospheric pressure; Coastal engineering; Floods; Hurricanes; Isotopes; Oil well flooding; Organic carbon; Sea level; Spectrum analysis; Carbon isotopes; Coastal environmental changes; Holocene sea-level change; Holocenes; Hydroclimatic variability; Southern oscillation; Sulfur isotope; Total Organic Carbon; Climate change; carbon isotope; climate variation; coastal zone; El Nino-Southern Oscillation; environmental change; flooding; Holocene; hydrometeorology; paleoclimate; paleoenvironment; reconstruction; sea level change; sulfur isotope; tropical environment; typhoon; Japan; Nakdong River; South Korea
来源期刊	Quaternary Science Reviews
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/151810
作者单位	Geological Research Division, Korea Institute of Geoscience and Mineral Resources, Daejeon, South Korea; Department of Geological Sciences, Pusan National University, Busan, South Korea; Department of Geology, Kangwon National University, Chuncheon, South Korea
推荐引用方式 GB/T 7714	Lim J.,Lee J.-Y.,Hong S.-S.,et al. Holocene coastal environmental change and ENSO-driven hydroclimatic variability in East Asia[J],2019,220.
APA	Lim J.,Lee J.-Y.,Hong S.-S.,Park S.,Lee E.,&Yi S..(2019).Holocene coastal environmental change and ENSO-driven hydroclimatic variability in East Asia.Quaternary Science Reviews,220.
MLA	Lim J.,et al."Holocene coastal environmental change and ENSO-driven hydroclimatic variability in East Asia".Quaternary Science Reviews 220(2019).