Hydrodynamic modelling and vulnerability analysis to assess flood risk in a dense Indian city using geospatial techniques     

Bhattacharjee  Sutapa  Kumar  Pramod  Thakur  Praveen K.  Gupta  Kshama 《Natural Hazards》2021,105(2):2117-2145

Natural Hazards - Urban flooding and waterlogging are causing menace in many cities around the world from the perspective of day-to-day functioning, health and hygiene, communication, and the...  相似文献   

Petrographic and depositional characteristics of Tadkeshwar lignite deposits (Cambay Basin), Gujarat     

Alpana Singh  O. P. Thakur  B. D. Singh 《Journal of the Geological Society of India》2012,80(3):329-340

Tadkeshwar lignite deposits are one of the important Lower Tertiary lignite deposits of Cambay Basin, Gujarat. These lignites are rich in huminite macerals followed by liptinite and inertinite with moderate to high proportions of associated mineral matter. Under fluorescence mode these are found to be rich in liptinite macerals, in particular the liptodetrinite and resinite. The type of huminite suggests that the lignite is formed from mixed vegetal source, i.e. woody forest vegetation and herbs, shrubs. The composition of macerals indicates the deposition of lignite in sub-aqueous condition in wet-reducing environment with intermittent exposure and subsidence of the peat surface. The rank of the Main and the Leader seams, determined through reflectance measurement, indicate that the lignite is less mature. The considerable amount of perhydrous huminite may have contributed to the lower reflectance values in some of the samples. Low rank and appreciable amount of mineral matter make the lignite suitable for its utilization in thermal power plants, however when upgraded or mixed with better quality coals it can be used for other industries.  相似文献   

Elucidating hydrochemical properties of groundwater for drinking and agriculture in parts of Punjab,India     

Tenzin Thakur  Madhuri S. Rishi  Pradeep K. Naik  Prerna Sharma 《Environmental Earth Sciences》2016,75(6):467

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GIS based spatial distribution mapping and suitability evaluation of groundwater quality for domestic and agricultural purpose in Kaithal district, Haryana state, India   总被引：1，自引：0，他引：1  

Sanjay Kumar Goyal  B. S. Chaudhary  Omvir Singh  G. K. Sethi  Praveen K. Thakur 《Environmental Earth Sciences》2010,61(8):1587-1597

Groundwater is a major resource for meeting huge domestic and agricultural requirements of Kaithal district in Haryana. Therefore, evaluation of its quality in terms of suitability for domestic and agricultural sectors is necessary for sustainable management of the resource. The present study has analyzed pre- and post-monsoon physico-chemical data of groundwater samples from bore wells spread over the entire district. Spatial distribution maps were generated for hydrogen ion concentration, total dissolved solids, total hardness, electrical conductivity, sodium adsorption ratio, residual sodium carbonate and percent sodium using the geographic information system. Furthermore, the study area was demarcated into different groundwater quality zones for domestic and agricultural use by applying various national and international standards. It was observed from the study that the groundwater was predominantly hard, alkaline and saline in nature. However, it was within safe limits for domestic use. Further, it was also experienced from the analysis that in about two-third parts of the district, groundwater was in desirable-to-permissible quality class for agricultural use but hazardous for soil as well as for crops in the remaining part. Also, a moderation in water quality was observed after the monsoon season, which can be attributed to a possible dilution due to groundwater recharge.  相似文献