Large-Scale Soil Resource Mapping Using IRS-P6 LISS-IV and Cartosat-1 DEM in Basaltic Terrain of Central India

2016 ◽  
Vol 44 (5) ◽  
pp. 811-819 ◽  
Author(s):  
Nisha Sahu ◽  
S. K. Singh ◽  
G. P. Obi Reddy ◽  
Nirmal Kumar ◽  
M. S. S. Nagaraju ◽  
...  
Keyword(s):  
Large Scale ◽  
Central India ◽  
Soil Resource ◽  
Resource Mapping ◽  
Irs P6 ◽  
Basaltic Terrain ◽  
Irs P6 Liss Iv

scholarly journals Projected Changes in South Asian Monsoon Low Pressure Systems

2020 ◽  
Vol 33 (17) ◽  
pp. 7275-7287 ◽  
Author(s):  
Wenhao Dong ◽  
Yi Ming ◽  
V. Ramaswamy
Keyword(s):  
South Asian ◽  
Large Scale ◽  
Climate Model ◽  
Asian Summer Monsoon ◽  
Central India ◽  
Low Pressure ◽  
Geophysical Fluid Dynamics Laboratory ◽  
South Asian Summer Monsoon ◽  
Projected Changes ◽  
Low Pressure Systems

AbstractMonsoon low pressure systems (MLPSs) are among the most important synoptic-scale disturbances of the South Asian summer monsoon. Potential changes in their characteristics in a warmer climate would have broad societal impacts. Yet, the findings from a few existing studies are inconclusive. We use the Geophysical Fluid Dynamics Laboratory (GFDL) coupled climate model CM4.0 to examine the projected changes in the simulated MLPS activity under a future emission scenario. It is shown that CM4.0 can skillfully simulate the number, genesis location, intensity, and lifetime of MLPSs. Global warming gives rise to a significant decrease in MLPS activity. An analysis of several large-scale environmental variables, both dynamic and thermodynamic, suggests that the decrease in MLPS activity can be attributed mainly to a reduction in low-level relative vorticity over the core genesis region. The decreased vorticity is consistent with weaker large-scale ascent, which leads to less vorticity production through the stretching term in the vorticity equation. Assuming a fixed radius of influence, the projected reduction in MLPSs would significantly lower the associated precipitation over north-central India, despite an overall increase in mean precipitation.

Morphometric Analysis Using GIS Techniques: A Case Study from the Basaltic Terrain of Central India

2018 ◽  
pp. 301-326
Author(s):  
Nisha Sahu ◽  
G. P. Obi Reddy ◽  
Nirmal Kumar ◽  
M. S. S. Nagaraju ◽  
Rajeev Srivastava ◽  
...  
Keyword(s):  
Morphometric Analysis ◽  
Central India ◽  
Gis Techniques ◽  
Basaltic Terrain

Environment and the Heterogeneous Conquest of North India

2019 ◽  
pp. 3-53
Author(s):  
Pratyay Nath
Keyword(s):  
Natural Environment ◽  
Large Scale ◽  
Environmental Heterogeneity ◽  
Central India ◽  
Free Movement ◽  
North India ◽  
The Political ◽  
Mughal Empire

This chapter studies the Mughal conquest of the heart of North India. It argues that the heterogeneous geography of this landmass shaped the course and nature of military engagements. The vast open plains of the Punjab and the Gangetic Basin allowed large-scale cavalry manoeuvres. Hence, the Mughals were able to engage their adversaries in a number of battles and skirmishes here. In contrast, the broken terrain of the forested highlands of central India restricted free movement of troops and encouraged fortress warfare. For this reason, Mughal expansion entailed a greater number of sieges here. This environmental heterogeneity also made it impossible for either cavalry or firearms to spearhead Mughal military conquests uniformly or single-handedly. Thus, even within the fairly contiguous region that was to eventually comprise the political heartland of the Mughal empire, the natural environment left a deep imprint on the conduct of warfare and the course of empire-formation.

scholarly journals Morphometric analysis in basaltic Terrain of Central India using GIS techniques: a case study

2016 ◽  
Vol 7 (5) ◽  
pp. 2493-2499 ◽  
Author(s):  
Nisha Sahu ◽  
G. P. Obi Reddy ◽  
Nirmal Kumar ◽  
M. S. S. Nagaraju ◽  
Rajeev Srivastava ◽  
...  
Keyword(s):  
Morphometric Analysis ◽  
Central India ◽  
Gis Techniques ◽  
Basaltic Terrain

An analytical tool for understanding the properties and behaviour of variable charge soils

Soil Research ◽  
2007 ◽  
Vol 45 (2) ◽  
pp. 83 ◽  
Author(s):  
G. P. Gillman
Keyword(s):  
Surface Charge ◽  
Large Scale ◽  
Graphical Representation ◽  
Resource Assessment ◽  
Ideal Condition ◽  
Soil Resource ◽  
Variable Charge ◽  
Ph Range ◽  
Soil Resource Assessment ◽  
Insight Into

Routine analyses for soil cation exchange properties usually give only limited insight into the properties and management of soils containing significant amounts of variable charge. In this paper a procedure for determining a soil Charge Fingerprint is fully described, a model developed from simplified theory to underpin the methodology is discussed, and examples of the usefulness of the approach are given. Operationally defined cation and anion exchange capacities (CEC and AEC) are determined over an appropriate pH range (pH 4 to pH 6 is suggested) using Ca and Cl as the index cations. At low pH, Ca does not always fully saturate the CEC, so that it is necessary to distinguish a Basic CEC (Ca ads.) from the Total CEC (Ca + Al ads.). The graphical representation of CECT, CECB, and AEC v. pH constitutes the Charge Fingerprint. Though not intended as a routine instrument, its determination on key samples in a characterisation exercise places routinely determined basic and acidic cations in context. Examples are given of large scale characterisation studies that link soils from different continents having similar surface charge characteristics; of the assessment of the success or otherwise of producing permanent positive charge in synthetically prepared Ti-substituted goethites; and of the evaluation of the effect of adding crushed basic rock amendment on the surface charge properties of a variable charge soil. The formulation of a Depreciation Index, which classifies soils in terms of their departure in basic cation content from an arbitrarily defined ‘ideal’ condition, is suggested for use in soil resource assessment.

scholarly journals Land Use/Land Cover Change Detection using Geoinformatics in Gurugram District, Haryana, India

2019 ◽  
Vol 8 (2) ◽  
pp. 3753-3755
Keyword(s):  
Land Use ◽  
Change Detection ◽  
Agricultural Land ◽  
Water Bodies ◽  
Time Range ◽  
Barren Land ◽  
Irs P6 ◽  
Significant Extension ◽  
Liss Iii ◽  
Irs P6 Liss Iv

The district Gurugram in the state Haryana has seen significant extension & development during the last few years. In this paper, the change in land-use/cover has been estimated with time range of 2007 - 2017 and the change detection was quantified. The land-use/cover data generated through satellite imagery has been classified into five major classes i.e., (i) Built-up land (ii) Water Bodies (iii) Barren Land (iv) Agricultural Land (v) Vegetation. The investigation was helped out through Geoinformatics approach by using IRS-P6- LISS-III sensor of 2007 and IRS-P6-LISS-IV sensor of 2017. Observing of land-use/spread mirrored that changes were more noteworthy in degree over the time range of 10 years in the land under various classes. The most sensational changes are the increase in built-up land and barren land. Apart from this decrease in agricultural, water bodies and vegetation cover area also. Results demonstrates an expansive change in the territory of various land use classifications amid the period from 2007 to 2017.The agriculture land covering an area of about 55.27% in 2007 reduced to 43.42% in 2017. The built up area increased from 15.97 % in 2007 to 30.23 in 2017. The barren land area increased from 6.45 % in 2007 to 16.97 in 2017 The Water bodies decreased from 4.65 % in 2007 to 1.05 % in 2017. The vegetation area has also decreased from 17.66 % in 2007 to 8.33 % in 2017. Urban extension and various anthropogenic exercises have brought genuine misfortunes of agricultural land, vegetation and water bodies.

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