Order of the National Green Tribunal in the matter of Residents Welfare Association Savita Vihar Vs Irrigation & Flood Control Department & Others dated 28/05/2025. The applicant raised the grievance against throwing of construction debris and sewage obstruction in the Ghazipur drain. According to the applicant this drain flows behind …
Martin Kennedy and colleagues searched the Australian outback for clues to the transition out of Snowball Earth. The answer, as it turns out, was much closer to home.
Silicate weathering reactions remove carbon dioxide from the atmosphere and store it in carbonate minerals. During the high atmospheric carbon dioxide conditions of the Early Eocene Climatic Optimum, rates of chemical weathering, physical erosion and denudation in the western USA were equivalent to the highest recorded rates in the non-glacial …
Authigenic carbonates within the Reynella Member of the glacial Elatina Formation occur in coastal cliff exposures of the Marinoan type section in South Australia and provide constraints on the magnitude and timing of methane influence during deglaciation.
Heed to the warnings of ill-planned approach Challenges thrown up by the Ranganadi Hydro Electric Project (rhep) stage I, commissioned in 2002, are lessons to be learnt by the state government and the project proponents. The project involves transfer of water from the Ranganadi, a tributary of the Subansiri, into …
Desiccation of the Sahara since the middle Holocene has eradicated all but a few natural archives recording its transition from a "green Sahara" to the present hyperarid desert. Our continuous 6000-year paleoenvironmental reconstruction from northern Chad shows progressive drying of the regional terrestrial ecosystem in response to weakening insolation forcing …
The generally warm and ice-free conditions of the Eocene epoch rapidly declined to the cold and glaciated state of the Oligocene epoch. Geochemical evidence from deep-sea sediments resolves in detail the climatic events surrounding this transition.
Watershed management is critical to sustain the benefits from the development of small water storages or small dams in Barani Areas, said Asian Development Bank's experts. In a project review report on "Watershed Management Constraints in Barani Areas", Sedimentation Surveys of sample dams in the Pothowar region reveal that loss …
Until recently, most assumed that the American West was a natural dust bowl where every cowboy breathed true grit. Now it seems that the dust was mostly man-made and came with the cows. Head 'em up, move 'em out - and choke on the dust. Before the cows and the …
The present study evaluated the options of silt disposal from Beas Satluj Link (BSL) hydroelectric project in Himachal Pradesh in India. BSL project is basically a run of the river power project, envisages diversion of about 4700 MCM per annum of Beas river water into Satlej river falling through an …
With creationists arguing over its formation, and lengthy disputes over land rights, the Grand Canyon has often been the focus of controversy. Now a row has broken out just days before the start of an experiment designed to repair environmental damage to the area.
The geochemical investigation of sediments deposited in the Renuka Lake basin and its adjoining wetland has shown variation in the distribution and concentration of major, trace and REEs. The major elements are depleted in the lake in relation to wetland and that of Post Archaean Australian, Shale (PAAS), except for …
Coastal areas are potential zones of marine resources for a country like India which has a long stretch of coast line. Coastal ecosystem has vast and rich biodiversity consisting of the wetlands along the coastal region, the fish resources available in the sea, coral reefs etc. There are several factors …
Coastal areas are potential zones of marine resources for a country like India which has a long stretch of coast line. Coastal ecosystem has vast and rich biodiversity consisting of the wetlands along the coastal region, the fish resources available in the sea, coral reefs etc. There are several factors …
Following the success of watershed development operation research project Sukhomajri in Haryana, large number of water harvesting dams were constructed in the Shivaliks region of north India. The reservoirs of a number of these earthen dams got silted due to fragile geological strata, inadequate vegetation cover in the catchment areas, …
After collecting water from a natural waterbody, the raw water undergoes sedimentation. During sedimentation, some particles spontaneously settle down. For particles slow to settle, chemicals (coagulants) are added to the water. This leads to the formation of larger particles that settle rapidly. As fine suspended particles hold bacteria and viruses …
In this book, there is a departure from empiricism and the emphasis is on the collection of data and analysis of the hydrological factors involved and promote hydrological design on sound principles and understanding of the science, for conservation and utilisation of water resources. Hydrological designs may be made by …
Rainfed agriculture productivity has constrained even in watershed areas after the termination of the watershed development activities in most places in India due to lack of exit mechanism and social regulation on use of groundwater. Under high risk, low productivity and fragile rainfed farming situation, 'water bodies' are found to …
Soil is a major component of any aquatic environment, which not only holds water for aquatic animals but also enriches the water body with various nutrients required for biological production.
A lot of wash load comes to the streams during the rainy season due to the erosion of soil from the catchment and known to flow practically without settling on the streambed. The presence of wash load is known to affect the resistance to the flow. The effect of its …
