Sedimentation

Order of the National Green Tribunal regarding waste disposal in Ghazipur drain, Delhi, 28/05/2025

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 …

Drilling at Lake Vostok by the Russians

After two decades of hardwork, on 5 February 2012, a team of Russian scientists began drilling at Lake Vostok, the largest of more than 140 sub-glacial lakes and the most deeply buried of the lakes hidden under the Antarctic ice cap.

Order of the High Court of Rajasthan regarding Jal Mahal Tourism Project and cancel Mansagar Lake Precinct Lease Agreements, Jaipur, 17/05/2012

Order of the High Court of Rajasthan in the matter of K. P. Sharma & Others Vs State of Rajasthan & Others dated 17/05/2012. The writ petitions have been filed in the public interest to quash Jal Mahal Tourism Project and cancel Mansagar Lake Precinct Lease Agreements dated 22nd November, …

Extending the timescale and range of ecosystem services through paleoenvironmental analyses, exemplified in the lower Yangtze basin

In China, and elsewhere, long-term economic development and poverty alleviation need to be balanced against the likelihood of ecological failure. Here, we show how paleoenvironmental records can provide important multidecadal perspectives on ecosystem services (ES). More than 50 different paleoenvironmental proxy records can be mapped to a wide range of …

Preservation of organic matter in sediments promoted by iron

About one-fifth of organic carbon in sediments is bound to reactive iron phases, which are metastable over geological timescales and may therefore serve as a sink for the long-term storage of organic carbon.

Integrated hydrological data book, 2012

Integrated Hydrological Data Book is a compendium of important hydrological information on major basins consolidated at the national level. This present issue of the data book provides updated basin/site-wise data for 12 non-classified basins covering aspects such as location, drainage area, population, temperature, average runoff, seasonal water flow, historical water …

Forcing of wet phases in southeast Africa over the past 17,000 years

Intense debate persists about the climatic mechanisms governing hydrologic changes in tropical and subtropical southeast Africa since the Last Glacial Maximum, about 20,000 years ago. In particular, the relative importance of atmospheric and oceanic processes is not firmly established. Southward shifts of the intertropical convergence zone (ITCZ) driven by high-latitude …

Arsenic migration to deep groundwater in Bangladesh influenced by adsorption and water demand

The consumption of shallow groundwater with elevated concentrations of arsenic is causing widespread disease in many parts of South and Southeast Asia. In the Bengal Basin, a growing reliance on groundwater sourced below 150-m depth—where arsenic concentrations tend to be lower—has reduced exposure. Groundwater flow simulations have suggested that these …

Handbook on drinking water treatment technologies

This handbook is prepared as per the requirements of Ministry of Drinking Water and Sanitation (MDWS), Government of India having following objectives: Identification of existing technologies for providing safe drinking water in the country; Data and information collection on various drinking water treatment technologies with tentative cost estimates; Suggestive O&M; …

Conflicting studies fuel arsenic debate

Uncertainties over contaminated groundwater in southern Asia highlight gaps in science.

Remaking the Mekong

Scientists are hoping to stall plans to erect a string of dams along the Mekong River.

Projected evolution of California's San Francisco Bay-delta-river system in a century of climate change

Accumulating evidence shows that the planet is warming as a response to human emissions of greenhouse gases. Strategies of adaptation to climate change will require quantitative projections of how altered regional patterns of temperature, precipitation and sea level could cascade to provoke local impacts such as modified water supplies, increasing …

Southern Ocean dust–climate coupling over the past four million years

Dust has the potential to modify global climate by influencing the radiative balance of the atmosphere and by supplying iron and other essential limiting micronutrients to the ocean. Indeed, dust supply to the Southern Ocean increases during ice ages, and ‘iron fertilization’ of the subantarctic zone may have contributed up …

Theri-soil reclamation using tank silt in Tuticorin district

Red sandy dunal soils of Tamil Nadu is called Theri soils. They occupy about 20,000 ha. Tuticorin district has the largest area 11,200 ha. Different interpretative systems have indicated that these are not suitable for agriculture. In this study, tank silt is used to amend the soil and the different …

Transforming landscapes, transforming lives: the business of sustainable water buffer management

This report is about sustainable land management, the development of water buffers and the business case underneath it. It is part of the discussion on the green economy: investment in natural resource management makes business sense. This also applies for investment in land, water and vegetative cover. Some of the …

Bracing for flood hazards

On the basis of a climate modelling study, Lal et al. predicted that during the winter months there will be 5–25% less rainfall and in the summer season the monsoon rainfall will be not only 10–15% more than the normal, but also quite variable and specially irregular in Central India. …

Damned if they do

An industry approach to greener hydropower is far from perfect, but it does offer a way forwards. (Editorial) http://www.nature.com/nature/journal/v474/n7352/full/474420a.html

Study on the physico-chemical characters sediment minor estuary of West Coast of India

Physico-chemical characteristics of Rajakkamangalam estuary situated in Kanyakumari district of Tamil Nadu and its sediment samples were collected in 4 sampling stations in 2001.

Reshaping the Mississippi for a warmer future

p { margin-bottom: 0.08in; } It is being called a spectacular success - but also a lost opportunity. With floodwaters rising to record levels along the Lower Mississippi river, the system of levees and spillways that protect the low-lying cities of Baton Rouge and New Orleans faced an unprecedented test. …

Mississippi delta blues

p { margin-bottom: 0.08in; } When humans try to constrain rivers, the results can be calamitous. (Editorial) http://www.newscientist.com/article/mg21028142.700-mississippi-delta-blues.html

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