Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1016/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
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ISSN | 1040-6182 |
EISSN | 1873-4553 |
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 |
推荐引用方式 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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