干旱区生态环境知识资源中心(Arid): Contribution of diverse monsoon precipitation over Central and Northern India during mid to Late Holocene

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DOI	10.1016/j.quaint.2018.10.003
	Contribution of diverse monsoon precipitation over Central and Northern India during mid to Late Holocene
	Kumar, P.1; Sanwal, J.2; Dimri, A. P.1; Ramesh, R.3
通讯作者	Dimri, A. P.
来源期刊	QUATERNARY INTERNATIONAL
ISSN	1040-6182
EISSN	1873-4553
出版年	2019
卷号	507 页码:217-223
英文摘要	The Indian summer monsoon (ISM) precipitation pattern over Indian subcontinent is looked through various high resolution speleothem oxygen (delta O-18) isotope records from Mid to Late Holocene. The six cave locations distributed from central to northern India describing regional climatic conditions due to stalagmite deposition are considered. The stalagmite deposition reflects precipitation patterns by temporal variations of delta O-18 values. Oxygen isotope values reflect cumulative precipitation that is basically interpreted by averaged latitudinal site of inter tropical convergence zone (ITCZ). Under the Paleoclimate Modelling Intercomparison Project Phase III (PMIP3) simulation, Commonwealth Scientific and Industrial Research Organisation Mk3L version 1.0 - Part 2 (CSIRO-Mk3L-1-2) model output shows ITCZ movement from Bay of Bengal (BoB) to Arabian Sea (AS) during Mid to Late Holocene which resulted due to solar insolation changes. It reflects precipitation shift from BoB to AS as well as to core monsoon zone (CMZ) to the western Himalayas. The past millennium epoch, which consists little ice age (LIA) and middle warm period (MWP), shows large variations in 850 hPa geopotential height leading to high anomalous precipitation variability all over India during ISM. The high fluctuation in delta O-18 values during Mid Holocene over northern India led to drought conditions due to which Indus valley civilization vanished. The present study shows that the Himalayas received higher precipitation during late Holocene. That is basically governed by western disturbances (WD) as well as ISM. Present study summarizes that the mean annual precipitation cycle for entire epoch was roughly similar, but spatial distribution of precipitation during various epoch was quite divergent from Mid to Late Holocene. The onset of ISM was also similar but, withdrawal was comparatively unalike. Wherever, peaks of seasonal precipitation were alike over Indian subcontinent region, spatial distribution of precipitation were unlike.
英文关键词	Indian summer monsoon (ISM) Oxygen isotope Inter tropical convergence zone (ITCZ) Western disturbances (WD) Core monsoon zone (CMZ)
类型	Article
语种	英语
国家	India
收录类别	SCI-E
WOS记录号	WOS:000464516500021
WOS关键词	ASIAN SUMMER MONSOON ; ARID CENTRAL-ASIA ; CENTRAL HIMALAYA ; OCEAN DIPOLE ; VARIABILITY ; CLIMATE ; STALAGMITE ; RAINFALL ; SYSTEM ; KUMAUN
WOS类目	Geography, Physical ; Geosciences, Multidisciplinary
WOS研究方向	Physical Geography ; Geology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/218228
作者单位	1.Jawaharlal Nehru Univ, Sch Environm Sci, New Delhi, India; 2.Jawaharlal Nehru Ctr Adv Sci Res, Bangalore, Karnataka, India; 3.Natl Inst Sci Educ & Res, Bhubaneswar, Odisha, India
推荐引用方式 GB/T 7714	Kumar, P.,Sanwal, J.,Dimri, A. P.,et al. Contribution of diverse monsoon precipitation over Central and Northern India during mid to Late Holocene[J],2019,507:217-223.
APA	Kumar, P.,Sanwal, J.,Dimri, A. P.,&Ramesh, R..(2019).Contribution of diverse monsoon precipitation over Central and Northern India during mid to Late Holocene.QUATERNARY INTERNATIONAL,507,217-223.
MLA	Kumar, P.,et al."Contribution of diverse monsoon precipitation over Central and Northern India during mid to Late Holocene".QUATERNARY INTERNATIONAL 507(2019):217-223.