Arid
DOI10.1016/j.quaint.2017.11.049
Implications of palaeohydrological proxies on the late Holocene Indian Summer Monsoon variability, western India
Sridhar, Alpa; Chamyal, L. S.
通讯作者Sridhar, Alpa
来源期刊QUATERNARY INTERNATIONAL
ISSN1040-6182
EISSN1873-4553
出版年2018
卷号479页码:25-33
英文摘要

In this paper we identify changes in the Indian Summer Monsoon (ISM) intensity during the late Holocene as revealed by palaeohydrological proxies in the fluvial archives of western India. Proxy indices, including the geomorphological, sedimentological, geochemical and biological evidence along with chronology have been employed to highlight the trend in ISM intensity over the late Holocene. It is inferred that on a longer timescale, the Indian Summer Monsoon weakened during the late Holocene however; short pulses of ameliorated monsoon occurred around 3, 1.6 and 0.3 cal ka BP. Clustering of flood events is seen to occur at 3-2.8, 2.2-1.6, 1.3-1.1 and 0.65-0.2 cal ka BP not necessarily coinciding with strengthening of the ISM. Palaeoflood data with regard to the ISM variability shows that the two most prevalent flood events at 0.5 and 1.7 cal ka BP coincide with the weak monsoon period/climatic transition in this region. The occurrence of high magnitude flood events during weak monsoon periods is also reflected in the modern flood and rainfall data. It is surmised that high magnitude flood events may represent peak monsoon periods however, cannot be singularly considered as indicators for enhanced monsoon conditions in a region. Only a more robust database of palaeohydrological proxies can further validate their implications on the monsoonal changes over western India. (C) 2017 Elsevier Ltd and INQUA. All rights reserved.


英文关键词Palaeohydrological proxies Indian Summer Monsoon Late Holocene Western India
类型Article
语种英语
国家India
收录类别SCI-E
WOS记录号WOS:000433225600005
WOS关键词SOUTHWEST MONSOON ; ARABIAN SEA ; MAHI RIVER ; LUMINESCENCE CHRONOLOGY ; PALEOFLOOD RECORD ; SABARMATI RIVER ; ALLUVIAL PLAIN ; CLIMATE-CHANGE ; FLOOD EVENTS ; THAR DESERT
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/2XILL650/212459
作者单位Maharaja Sayajirao Univ Baroda, Dept Geol, Vadodara 390002, Gujarat, India
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GB/T 7714
Sridhar, Alpa,Chamyal, L. S.. Implications of palaeohydrological proxies on the late Holocene Indian Summer Monsoon variability, western India[J],2018,479:25-33.
APA Sridhar, Alpa,&Chamyal, L. S..(2018).Implications of palaeohydrological proxies on the late Holocene Indian Summer Monsoon variability, western India.QUATERNARY INTERNATIONAL,479,25-33.
MLA Sridhar, Alpa,et al."Implications of palaeohydrological proxies on the late Holocene Indian Summer Monsoon variability, western India".QUATERNARY INTERNATIONAL 479(2018):25-33.
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