Remote Sensing

Order of the National Green Tribunal regarding pollution caused by Talcher Coalfield under Mahanadi Coalfields Limited, Angul district, Odisha, 06/03/2024

Order of the National Green Tribunal (Eastern Zone Bench, Kolkata) in the matter of Sridhar Samal Vs State of Odisha & Others dated 06/03/2024. The matter related to pollution caused by Talcher Coalfield under Mahanadi Coalfields Limited in the course of its operation. It was said that on a daily …

Caribbean corals in crisis: Record thermal stress, bleaching, and mortality in 2005

The rising temperature of the world's oceans has become a major threat to coral reefs globally as the severity and frequency of mass coral bleaching and mortality events increase. In 2005, high ocean temperatures in the tropical Atlantic and Caribbean resulted in the most severe bleaching event ever recorded in …

Measuring the meltdown

With global warming hitting the Tibetan plateau hard, scientists gather to plan an international research campaign to understand and mitigate changes at the 'third pole'.

Understanding and predicting the Indian summer monsoon

This is a brief response to Sunita Narain's thought-provoking piece on the role of monsoon in our lives. As scientists actively involved in understanding the Indian monsoon and its prediction, we have attempted to elucidate what we know about this intriguing phenomenon, which is a tantalizing mixture of order and …

Assessment of land resources and its implication in and around Rajampet, Kadapa District, Andhra Pradesh by using remote sensing and GIS

Remote sensing is a direct adjunct to field, recently playing an important role in the study and assess the natural resource in any part of the world. In this view the present work has been taken upto study and assess the natural resources and environmental potential in and around Rajampet …

Geo-informatics for Forest Rights

The Government of India enacted The Forest Rights Act, 2006 (Scheduled Tribes and Other Traditional Forest Dwellers - Recognition of Forest Rights – Act) to give forest dwelling scheduled tribes and other traditional forest dwellers the opportunity to claim individual as well as community forest rights of forest land. The …

Millennium Development Goals (MDGs) and accessibility levels to potable water supply in rural areas of Akwa Ibom State, Nigeria

The UN in the year 2000 enlisted improved access to potable water supply as one of the development goals to be achieved by 2015 in developing countries including Nigeria. This study therefore, examined the levels of access to potable water supply in rural areas of Akwa Ibom State against the …

One backyard at a time

Local action can curb habitat loss and counter global pessimism on biodiversity. (Editorial)

Ice–sheet advance in Antarctica

Reliable forecasts of sea-level rise depend on accurately modelling the dynamics of polar ice sheets. A numerical framework that better reflects ice-sheet basal drag adds greater realism to such models.

Perspectives on empirical approaches for ocean color remote sensing of chlorophyll in a changing climate

Phytoplankton biomass and productivity have been continuously monitored from ocean color satellites for over a decade. Yet, the most widely used empirical approach for estimating chlorophyll a (Chl) from satellites can be in error by a factor of 5 or more. Such variability is due to differences in absorption and …

A study of erosion-deposition processes around Majuli Island, Assam

Majuli, the largest inhabited river island bounded by the river Subansiri to the north and mighty Brahmaputra River to the south, is one of the subdivisions of the Jorhat district, Assam. Erosion of the island is a continuous process since historical times and posses a significant concern. The present approach …

Groundwater use for irrigation – a global inventory

Irrigation is the most important water use sector accounting for about 70% of the global freshwater withdrawals and 90% of consumptive water uses. While the extent of irrigation and related water uses are reported in statistical databases or estimated by model simulations, information on the source of irrigation water is …

Selection of potential sites for augmenting groundwater recharge in Manesar nala watershed in Gurgaon (Haryana) using RS-GIS approach

A pilot study was conducted to analyze the potential site suitability for constructing the groundwater recharge structures in Manesar Nala watershed, Gurgaon, Haryana using space technology integrated Remote Sensing and Geographical Information System (GIS).

Soil organic carbon the most reliable indicator for monitoring land degradation by soil erosion

Degradation due to erosion, salinity, waterlogging, contamination, etc. reduces the quality of land. Soil and water resources are affected initially then the bioresources. Uncontrolled degradation processes lead to desertification of land and the ecosystem functions are disturbed. In India, soil erosion has produced maximum degraded lands due to mismanagement and …

Mumbai finally gets Doppler radar after monsoon nearly over

Even as monsoon draws to an end, the Met department at Colaba is gearing up to test the much awaited Doppler radar which will be fully operational after the two-month long installation procedure by the end of this week. The state-of-the-art S-band Doppler Weather Radar is being installed at the …

Tropical forests were the primary sources of new agricultural land in the 1980s and 1990s

Global demand for agricultural products such as food, feed, and fuel is now a major driver of cropland and pasture expansion across much of the developing world. Whether these new agricultural lands replace forests, degraded forests, or grasslands greatly influences the environmental consequences of expansion. Although the general pattern is …

High-resolution forest carbon stocks and emissions in the Amazon

Efforts to mitigate climate change through the Reduced Emissions from Deforestation and Degradation (REDD) depend on mapping and monitoring of tropical forest carbon stocks and emissions over large geographic areas. With a new integrated use of satellite imaging, airborne light detection and ranging, and field plots, we mapped aboveground carbon …

Brazil says rate of deforestation in Amazon continues to plunge

Large-scale deforestation in the Amazon has declined by 47.5% over the past 12 months, according to a preliminary survey by the Brazilian Ministry of Environment using a low-resolution satellite. The figure is one of the largest declines since measurements began 20 years ago. If confirmed by a second set of …

Andhra Pradesh State of Forest Report 2010

This first report on the status of forests in Andhra Pradesh published by Andhra Pradesh Forest Department shows the changes between 2007 and 2008 and finds that there has been a net loss of 107.96 sq km of forest area between 2007 and 2008. There is increasing concern at global …

Human impacts flatten rainforest-Savanna gradient and reduce adaptive diversity in a rainforest bird

Ecological gradients have long been recognized as important regions for diversification and speciation. However, little attention has been paid to the evolutionary consequences or conservation implications of human activities that fundamentally change the environmental features of such gradients. Here we show that recent deforestation in West Africa has homogenized the …

Mines staff to update state maps

Aug. 22: The state mines department has decided to address the root cause of illegal mining

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