干旱区生态环境知识资源中心(Arid): Sedimentological and Grain Size Characteristics of Two Lake Cores from Himachal Pradesh, India

Arid

DOI	10.3233/JCC210024
	Sedimentological and Grain Size Characteristics of Two Lake Cores from Himachal Pradesh, India
	Kholia, Neha; Kotlia, Bahadur Singh; Porinchu, David; Bisht, Kamini; Sharma, Anupam; Jalal, Poonam
通讯作者	Kotlia, BS (corresponding author), Kumaun Univ, Ctr Adv Study Geol, Naini Tal 263001, India.
来源期刊	JOURNAL OF CLIMATE CHANGE
ISSN	2395-7611
EISSN	2395-7697
出版年	2021
卷号	7 期号:4 页码:35-51
英文摘要	Two lake cores from Khajjiar (length 746 cm) and Rcwalsar lakes (length 647 cm) in Himachal Pradesh (India) were retrieved to understand the sedimentological characteristics and variation in grain size distribution. Both the lake cores are Upper Holocene in age. The Rewalsar lake sediments are composed predominantly of silt with small amounts of clay, whereas the Khajjiar sediments contain sand, silt and clay and both cores have high carbonaceous matter. The standard deviation ranges from 0.88 phi to 2.56 phi for Khajjiar lake and from 0.957 phi to 2.264 phi for Rewalsar lake, indicating poorly to very poorly sorted core sediments. The values of the Kurtosis vary between 0.678 phi and 1.205 phi for Khajjiar lake and from 0.8 phi to 1.2.4 phi for Rewalsar lake, viewing platykurtic to leptokunic nature. Further, the skewness value ranges from -0.097 phi to 0.240 phi for Khajjiar lake and 0.079 phi to 0.25 phi for Rewalsar lake revealing fine to symmetrical skewness model. The bivariate plots by using the grain-size parameters were also interpreted. The Total Organic Carbon (TOC) is higher in the Khajjiar lake sediments (0.9 to 31.2%; av. 10.6%). compared to that in the Rewalsar lake sediments (1.0 to 9.0; av. 2.6%). The sedimentological characteristics indicate that the energy conditions were linked to the climatic conditions prevailing in the area. In general, the Khajjiar lake core is composed of relatively coarser sediments and more affected by arid conditions while the fine fraction of the Rewalsar shows the consequence of lower energy conditions. The Khajjiar lake shows the transition from fluctuating conditions (zone 1) to humid (zone 2) to arid (zone 3), while the Rewalsar shows the change from fluctuating (zone 1) to humid conditions (zones 2 and 3). The similarity between zone 1 and 2 of both the lake profiles shows that both lakes have experienced similar climatic conditions during the deposition, revealing domination of fluctuating and arid conditions.
英文关键词	Lake core sediments Statistical parameters Grain size analysis Total Organic Carbon (TOC) Depositional environment
类型	Article
语种	英语
收录类别	ESCI
WOS记录号	WOS:000734503900005
WOS关键词	HIGHER CENTRAL HIMALAYA ; QUATERNARY LACUSTRINE SEDIMENTS ; KUMAUN LESSER HIMALAYA ; RELICT LAKE ; PRECIPITATION VARIABILITY ; SURFICIAL SEDIMENTS ; SCHIRMACHER OASIS ; GARHWAL HIMALAYA ; TIBETAN PLATEAU ; EAST ANTARCTICA
WOS类目	Meteorology & Atmospheric Sciences
WOS研究方向	Meteorology & Atmospheric Sciences
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/374214
作者单位	[Kholia, Neha; Kotlia, Bahadur Singh; Bisht, Kamini; Jalal, Poonam] Kumaun Univ, Ctr Adv Study Geol, Naini Tal 263001, India; [Porinchu, David] Univ Georgia, Dept Geog, Athens, GA 30602 USA; [Sharma, Anupam] Birbal Sahni Inst Palaeosci, 53 Univ Rd, Lucknow 226007, Uttar Pradesh, India
推荐引用方式 GB/T 7714	Kholia, Neha,Kotlia, Bahadur Singh,Porinchu, David,et al. Sedimentological and Grain Size Characteristics of Two Lake Cores from Himachal Pradesh, India[J],2021,7(4):35-51.
APA	Kholia, Neha,Kotlia, Bahadur Singh,Porinchu, David,Bisht, Kamini,Sharma, Anupam,&Jalal, Poonam.(2021).Sedimentological and Grain Size Characteristics of Two Lake Cores from Himachal Pradesh, India.JOURNAL OF CLIMATE CHANGE,7(4),35-51.
MLA	Kholia, Neha,et al."Sedimentological and Grain Size Characteristics of Two Lake Cores from Himachal Pradesh, India".JOURNAL OF CLIMATE CHANGE 7.4(2021):35-51.