干旱区生态环境知识资源中心(Arid): Response of shallow-sea benthic foraminifera to environmental changes off the coast of Goa, eastern Arabian Sea, during the last similar to 6100 cal yr BP

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DOI	10.1017/S0016756819000979
	Response of shallow-sea benthic foraminifera to environmental changes off the coast of Goa, eastern Arabian Sea, during the last similar to 6100 cal yr BP
	Saravanan, Ponnusamy 1,2; Gupta, Anil K.2; Zheng, Hongbo 1; Panigrahi, Mruganka K.2; Tiwari, Sameer K.3; Rai, Santosh K.3; Prakasam, Muthusamy 3
通讯作者	Saravanan, Ponnusamy
来源期刊	GEOLOGICAL MAGAZINE
ISSN	0016-7568
EISSN	1469-5081
出版年	2020
卷号	157 期号:3 页码:497-505
英文摘要	We have analysed a 6100-year record of benthic and planktonic foraminifera from inner neritic sediments from Core SK291/GC13, off the Goa coast, eastern Arabian Sea, to understand the response of benthic foraminifera to shallow-marine processes. The benthic foraminiferal assemblage is dominated by Nonion cf. asterizans, Ammonia beccarii, A. gaimardii and Virgulinella fragilis, which have been selected on the basis of a population of 10% or more in any three samples analysed. The planktonic foraminiferal population is sporadic and rare, with Globigerinoides ruber as the predominant species showing a variable trend. The foraminiferal proxies combined with total organic carbon (wt%) and delta C-13 and delta O-18 values of Ammonia gaimardii suggest distinct variations, indicating changes in productivity and salinity in the shallow eastern Arabian Sea. The coastal waters off Goa were relatively warmer and less saline between 6100 and 4600, or perhaps to 4200, calibrated years before the present (cal yr BP), corresponding to a stronger monsoon in South and East Asia. The shallow sea was cooler from similar to 4200 to 2600 cal yr BP in the study area, coinciding with a lower sea surface temperature in the northeastern Arabian Sea and an arid phase in the Indian subcontinent. From 2900 to 2600 cal yr BP the study core exhibits the impacts of short-term cold events, which have earlier been observed in the northeastern Arabian Sea, off Pakistan. During the Little Ice Age, the shallow sea off Goa was less productive.
英文关键词	benthic foraminifera western continental margin of India Arabian Sea Indian monsoon stable isotopes
类型	Article
语种	英语
国家	Peoples R China ; India
收录类别	SCI-E
WOS记录号	WOS:000524942400009
WOS关键词	HOLOCENE ASIAN MONSOON ; INDIAN-SUMMER MONSOON ; CONTINENTAL-MARGIN ; VARIABILITY ; FLUX ; MIDHOLOCENE ; EVOLUTION ; SALINITY ; AMMONIA ; BENGAL
WOS类目	Geosciences, Multidisciplinary
WOS研究方向	Geology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/314602
作者单位	1.Yunnan Univ, Res Ctr Earth Syst Sci, Kunming 650500, Yunnan, Peoples R China; 2.Indian Inst Technol, Dept Geol & Geophys, Kharagpur 721302, W Bengal, India; 3.Wadia Inst Himalayan Geol, Dehra Dun 248001, Uttarakhand, India
推荐引用方式 GB/T 7714	Saravanan, Ponnusamy,Gupta, Anil K.,Zheng, Hongbo,et al. Response of shallow-sea benthic foraminifera to environmental changes off the coast of Goa, eastern Arabian Sea, during the last similar to 6100 cal yr BP[J],2020,157(3):497-505.
APA	Saravanan, Ponnusamy.,Gupta, Anil K..,Zheng, Hongbo.,Panigrahi, Mruganka K..,Tiwari, Sameer K..,...&Prakasam, Muthusamy.(2020).Response of shallow-sea benthic foraminifera to environmental changes off the coast of Goa, eastern Arabian Sea, during the last similar to 6100 cal yr BP.GEOLOGICAL MAGAZINE,157(3),497-505.
MLA	Saravanan, Ponnusamy,et al."Response of shallow-sea benthic foraminifera to environmental changes off the coast of Goa, eastern Arabian Sea, during the last similar to 6100 cal yr BP".GEOLOGICAL MAGAZINE 157.3(2020):497-505.