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 …
To measure impact of ecological change in Chittagon Hill Tracts after the installation od dam Kaptai in 1955 on siltation, Bangladesh Water Development Board has conducted siltation study several times from 1978. In 1983 and 2001 more comprehensive survey was done on 67 cross sections, repeating 42 cross sections of …
This study reviews the current status of medium to larger scale artificial water storage development with a focus on Africa. It assesses best practices in water storage development and management infrastructure for building sustainable livelihoods and mitigate climate change. It also analyses the linkages between water, energy and food security, …
This latest UNESCO publication explores how to maximize the use of groundwater and rainwater for development and climate change adaptation in an approach called 3R that refers to Recharge, Retention & Reuse. This book explores how to maximize the use of groundwater and rainwater for development and climate change adaptation …
Analyses of boron isotopes in ancient marine carbonate sediments provide an enlightening perspective on the links between carbon dioxide and ice-cap cover at a climatically momentous time in Earth's history.
In this paper an attempt has been made to analyze the sedimentation surveys and rates in live storage capacity of reservoirs. The analysis is based on the available data of 28 reservoirs from different basins of Maharashtra.
Kachchh, the second largest district in the country (45,652 sq. km), is located in the north-western region of Gujarat. In spite of being arid, Kachchh district has 80.21% of the total wetlands area in Gujarat2 (21.77 lakh ha). Most of the wetlands in this arid region are man-made, probably to …
Many of the world's largest deltas are densely populated and heavily farmed. Yet many of their inhabitants are becoming increasingly vulnerable to flooding and conversions of their land to open ocean. The vulnerability is a result of sediment compaction from the removal of oil, gas and water from the delta's …
The Ganga continues to be threatened by environmentally unsustainable development projects, of which the Ganga Expressway is the most recent example. But the campaign to save the Ganga is seemingly caught in recrimination and bad governance.
Three lakes (Nainital, Sattal and Naukuchiatal) in the Kumaun Himalayan region were investigated for total organic carbon and nitrogen, their atomic ratios and isotopic composition in their sediments. These geochemical proxies measured in 34-45 cm long cores indicate that organic matter preserved in the lake sediments is primarily derived from …
The low 13C/12C ratio in some Neoproterozoic carbonates is considered to be evidence of carbon cycle perturbations unique to the Precambrian. Here, all published oxygen and carbon isotope data for Neoproterozoic marine carbonates are compiled. The combined isotope systematics are found to be identical to those of well-understood Phanerozoic examples, …
Ice cores extracted from the Antarctic ice sheet suggest that glacial conditions and the relationship between temperatures and atmospheric carbon dioxide concentrations have been constant over the last 800,000 years, but there is some evidence for a fluctuating severity of glacial periods mediated by previously unidentified mechanisms. Variable migration of …
The presence of ice-rafted debris (IRD) in middle Eocene ocean sediments has previously been demonstrated, but it has been unclear whether the source of IRD was land-based glacial ice or sea ice, a distinction with important climate implications. The analysis of a sediment core from the ACEX project now reveals …
At times in the past, mobile ocean fronts in the subtropics have exercised an influence on the magnitude of climate change by decoupling temperature from levels of carbon dioxide in the atmosphere.
The modern Arctic Ocean is regarded as a barometer of global change and amplifier of global warming and therefore records of past Arctic change are critical for palaeoclimate reconstruction. Little is known of the state of the Arctic Ocean in the greenhouse period of the Late Cretaceous epoch (65
Many aspects of the carbon cycle can be assessed from temporal changes in the 13C/12C ratio of oceanic bicarbonate. 13C/12C can temporarily rise when large amounts of 13C-depleted photosynthetic organic matter are buried at enhanced rates, and can decrease if phytomass is rapidly oxidized2 or if low 13C is rapidly …
A study was carried out for the simulation of sediment yield from an agricultural watershed falling in laterite zone of West Bengal using event scale Modified Universal Soil Loss Equation (MUSLE).
The main objective of the study is to prepare the Environmental Impact ssessment report and formulation of Environmental Management Plan for obtaining Environmental Clearance from the regulatory agencies. The Study has been conducted to carryout Comprehensive Environmental Impact Assessment based on season data covering the following: Assessment of the existing …
Meandering phenomena takes place over an alluvial plane due to fluvial hydraulic forces, influence of gravity and sediment transport. For an alluvial channel, the resistance offered by the bed and bank varies with the bed material and saturation level of the bank-material and as such as the probability of bed …
