scholarly journals Sediment-Water Interaction at Higher Altitudes: Example from the Geochemistry of Wular Lake Sediments, Kashmir Valley, Northern India

2013 ◽  
Vol 7 ◽  
pp. 786-789 ◽  
Author(s):  
Shaik A. Rashid ◽  
Ather Masoodi ◽  
Farid A. Khan
2019 ◽  
Vol 26 (1) ◽  
pp. 31-52 ◽  
Author(s):  
Rayees A. Shah ◽  
Hema Achyuthan ◽  
Satish J. Sangode ◽  
Aasif M. Lone ◽  
Mohammd Rafiq

The Holocene ◽  
2020 ◽  
Vol 30 (5) ◽  
pp. 733-743 ◽  
Author(s):  
Rayees Ahmad Shah ◽  
Hema Achyuthan ◽  
Aasif Mohmad Lone ◽  
Sanjeev Kumar ◽  
Pankaj Kumar ◽  
...  

We present a comprehensive record of Holocene (11,590–628 cal. yr BP) climate and hydrographic changes around the Wular Lake located in Kashmir Valley, India. Based on the multi-proxy investigations, we have identified three phases of wet climate conditions that prevailed from the commencement of the Holocene Epoch – 9000 cal. yr BP, 8100–6650 cal. yr BP and 6350–5000 cal. yr BP, whereas periods of dry climate were observed during 9000–8100 cal. yr BP, 6650–6350 cal. yr BP and ~5000 to 4000 cal. yr BP. The results also suggested that the lake widened and deepened significantly around 6350–5000 cal. yr BP. The results indicated desiccation and the exposure of the lake margin around 5000–4500 cal. yr BP. The sedimentation rate since 4500–628 cal. yr BP was quite low for detailed paleoclimate interpretations. Oscillations in lake extension and deepening appear to be due to changing intensity of westerly moisture in the region, and we correlate several of the low lake-level phases to the Bond events caused by North Atlantic ice rafting events.


2009 ◽  
Vol 28 (1) ◽  
pp. 25-36 ◽  
Author(s):  
Michael Kramer ◽  
Jonathan Holmes

Abstract. Ostracoda from a 25 m thick exposure in sediments of the upper Karewa formation indicate lacustrine conditions in the Kashmir intermontane basin during the Middle to Late Pleistocene. The Middle to Late Pleistocene age is established on the basis of lithostratigraphy and confirmed by two thermoluminescence age determinations at the top of the section. The ostracod assemblages show that the lake water remained fresh or, at most, was very slightly saline, throughout the period represented by the section. Nearly all ostracod taxa identified from the sediments are cold stenothermal forms and they include inhabitants of the littoral and profundal domain as well as running waters and springs. The Ostracoda present within the section indicate that during deposition of the upper Karewa sediments a large, but fairly shallow, well-oxygenated open-basin freshwater lake existed in that central part of the Kashmir Basin. Although the sequences suggest changes in water depth may have occurred, lacustrine conditions were otherwise largely unchanged over the period represented by the section, up until the demise of the lake during the early part of the Late Pleistocene.


2019 ◽  
Vol 507 ◽  
pp. 156-171 ◽  
Author(s):  
C. Babeesh ◽  
Hema Achyuthan ◽  
M.R. Resmi ◽  
Chandra Mohan Nautiyal ◽  
Rayees Ahmad Shah

Limnology ◽  
2020 ◽  
Author(s):  
Rayees Ahmad Shah ◽  
Hema Achyuthan ◽  
Aasif Lone ◽  
Pankaj Kumar ◽  
Asif Ali ◽  
...  
Keyword(s):  

Author(s):  
T. Ahmad ◽  
A. C. Pandey ◽  
A. Kumar

Wular lake, located at an elevation of 1520&amp;thinsp;m above sea level in Kashmir valley, India. In the present study, the immediate and long term impact of flood (2014) over the Wular lake environs was analyzed by using satellite images and employing supervised classification technique in GIS environment. The LULC classification was performed on the images of 25th August 2014 (pre flood) and 13th September 2015 (post flood) and was compared, which indicated marked decrease in terrestrial vegetation (23.7&amp;thinsp;%), agriculture (43.7&amp;thinsp;%) and water bodies (39.9&amp;thinsp;%). Overlaying analysis was performed with pre and post flood classified images with reference to the satellite image of 10th September 2014(during flood) which indicated total area inundated during flood was 88.77&amp;thinsp;km<sup>2</sup>. With the pre-flood situation, the aquatic vegetation of 34.06&amp;thinsp;km<sup>2</sup>, 13.89&amp;thinsp;km<sup>2</sup> of agriculture land and terrestrial vegetation of 3.13&amp;thinsp;km<sup>2</sup> was inundated. In the post flood situation, it was also came into focus that more than the half of the area under water bodies was converted into sand deposits (22.76&amp;thinsp;km<sup>2</sup>) due to anomalous increase in siltation. The overlay analysis on post flood classified image indicated that aquatic vegetation followed by agriculture and sand deposits lie within the flood inundated area. Further spatial analysis was performed within the flood inundated area (88.77&amp;thinsp;km<sup>2</sup>) with pre and post classified image to understand the situation before and after the flood and to calculate the changes. These land use-land cover transformations signifies the ill effect of flooding on the biodiversity of Wular Lake.


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