干旱区生态环境知识资源中心(Arid): Impact of 10-Myr scale monsoon dynamics on Mesozoic climate and ecosystems

Arid

DOI	10.1038/s41598-020-68542-w
	Impact of 10-Myr scale monsoon dynamics on Mesozoic climate and ecosystems
	Ikeda, Masayuki; Ozaki, Kazumi; Legrand, Julien
通讯作者	Ikeda, M
来源期刊	SCIENTIFIC REPORTS
ISSN	2045-2322
出版年	2020
卷号	10 期号:1
英文摘要	Earth's orbital variations on timescales of 10(4)-10(5) years, known as Milankovitch cycles, have played a critical role in pacing climate change and ecosystem dynamics, through glacial and/or monsoon dynamics. However, the climatic and biotic consequences of these cycles on much longer (similar to 10(7) years) timescales remain unclear, due to a lack of long proxy records with precise age constraints. Here, we show similar to 10-Myr scale variations in early Mesozoic (250-180 Ma) records of lake-level, desert distribution, biogenic-silica burial flux, atmospheric CO2 levels (pCO(2)), and sea-surface-temperature (SST). Their phase relationships, coupled with carbon cycle modeling results, suggest that orbitally-paced summer monsoon dynamics modulates changes in terrestrial weatherability by similar to 20%, affecting changes in pCO(2) of up to 500-1,000 ppmv and 3-7 degrees C SST. We also infer that these similar to 10-Myr scale climatic variations could have been causally linked to biotic turnover, size variations in dinosaur footprints, and tetrapod dispersal, potentially through spatio-temporal variations in resource availability and arid-hot climatic barriers at low-middle latitudes.
类型	Article
语种	英语
开放获取类型	DOAJ Gold, Green Published
收录类别	SCI-E
WOS记录号	WOS:000556694100001
WOS关键词	END-TRIASSIC EXTINCTION ; CHERT SEQUENCE INUYAMA ; TIME-SCALE ; ASTRONOMICAL CYCLES ; GEOCHRONOLOGY LINKS ; ATMOSPHERIC PCO(2) ; ECCENTRICITY CYCLE ; NEWARK SUPERGROUP ; NORTH-AMERICA ; CARBON-CYCLE
WOS类目	Multidisciplinary Sciences
WOS研究方向	Science & Technology - Other Topics
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/325470
作者单位	[Ikeda, Masayuki; Legrand, Julien] Shizuoka Univ, Grad Sch Sci, Dept Geosci, Shizuoka 7908577, Japan; [Ikeda, Masayuki; Legrand, Julien] Univ Tokyo, Dept Earth & Planetary Sci, Bunkyo Ku, Tokyo 1130033, Japan; [Ozaki, Kazumi] Toho Univ, Dept Environm Sci, Chiba 2748510, Japan
推荐引用方式 GB/T 7714	Ikeda, Masayuki,Ozaki, Kazumi,Legrand, Julien. Impact of 10-Myr scale monsoon dynamics on Mesozoic climate and ecosystems[J],2020,10(1).
APA	Ikeda, Masayuki,Ozaki, Kazumi,&Legrand, Julien.(2020).Impact of 10-Myr scale monsoon dynamics on Mesozoic climate and ecosystems.SCIENTIFIC REPORTS,10(1).
MLA	Ikeda, Masayuki,et al."Impact of 10-Myr scale monsoon dynamics on Mesozoic climate and ecosystems".SCIENTIFIC REPORTS 10.1(2020).