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MOST POPULAR
- Man-made reasons for Uttarakhand disaster 1
- Dhari Devi idol goes missing 2
- Pedestrian questions 14
- Where all did extreme events cause disasters last decade
- Transition failure 1
- Gujarat pollution board gets a makeover in efficiency 33
- Rains over past three days extreme weather event: scientists 1
- Monsoon arrives early; kills over 30 people in Uttarakhand
- Rush of hydropower projects on Ganga, tributaries
- Out of turn
- Don’t just cash in on tigers 18
- Pedestrian questions 14
- Weather dice is loaded 13
- “Come elections, our forests are looted” 10
- Odisha's waterman 6
- Kudankulam meltdown 5
- Contaminating millets 4
- Risk of corruption clouds Andhra Pradesh solar bids 4
- Waging war on state 4
- Is Ganga losing its resilience? 4
FOLLOW US ON
Remote Sensing
Scrutinising disasters
Issue Date: Jun 15, 2002
Flood Studies in India brings to fore several aspects of this natural disaster that are not yet conventional wisdom in policy circles. The book looks at floods from a variety of expertise areas, such as civil engineering, meteorology, hydrology, remote sensing, geomorphology and geography - the only way to do justice to an area that is the point of intersection of several disciplines.
Satellite Maps Forests
Issue Date: May 15, 2002
The hills are alive with tradition. One method killsslashes and burnsthe other is healingand sustains. In the northeast hills of India are found medicinal plants that are treasured for their life giving potential. Tribals use these plants to kill pain and treat diseases.
Continental melting
Issue Date: Jan 15, 2002
Antarctica seems to be melting and contributing to the slow rise of the ocean levels, scientists from the Jet Propulsion Laboratory of the National Aeronautics and Space Administration (NASA) report. Using two sets of radar data from the European Remote Sensing Satellite, the scientists found that a large amount of ice has melted from glaciers in West Antarctica over the past decade. The amount is enough to raise sea levels worldwide by about one-sixtieth of an inch.
Meltdown
Issue Date: Jun 30, 2001
Latest NASA (National Aeronautics and Space Administration) satellite maps reveal that most of the world's glaciers are shrinking. Rick Wessels of the US Geographical Survey, based in Arizona, compared thousands of satellite images to aerial photographs dating back 20 years and found almost every mountain glacier in Patagonia, the Himalayas, the Alps and the Pyrenees, in Europe, had shrunk by several hundred metres. Wessels also studied images of mountain lakes at the base of melting glaciers that have grown over the last 10 years and found higher sediment levels.
MONITORING FOREST
Issue Date: Feb 15, 2001
Pakistan plans to set up a Geographical Information System (GIS) to monitor changes in the forest cover in the country. A ban on the commercial harvesting of forests will also be lifted for one year and progress will be reviewed through the federal forestry board. The forest management centre in Peshawar has been given the task of preparing plans for all the forests using GIS and satellite imagery techniques.
Threatened mangroves
Issue Date: Feb 15, 2001
mangrove vegetation along the 30,000 square kilometre coastline of Gujarat has reduced by 33.5 per cent in past two decades, reveals satellite data from the space application centre of the Indian Space and Research Organisation (isro) in Ahmedabad. Though the 1998 cyclone is cited as the main reason, human activities are also to be blamed. "Till a few years ago, there were 10 species of mangroves along the Gulf of Kachchh, but now there is only one," says Y D Singh, director of Gujarat Institute of Desert Ecology, Bhuj.
PERU
Issue Date: Jan 15, 2001
A stream originating in Nevado Mismi, a mountain in southern Peru, is said to be the exact source of the Amazon river, the National Geographic Society reported. Global Positioning System (gps) equipment was used by a five-nation expedition to take measurements. The countries that participated in the expedition included the us, Poland, Peru, Canada and Spain.
Keeping watch
Issue Date: Nov 30, 2000
A "spy in the sky" satellite is being tested by coastguards in Canada in an attempt to catch ships illegally discharging oil into the North Sea. The satellite, called Radarsat, is part of an eight-month trial ordered by the Maritime and Coastguard Agency. It is hoped that the satellite, which can detect slicks using radar even on cloudy days, will give agency staff a faster way of homing in on polluting vessels.
Ozone layer depletes
Issue Date: Sep 30, 2000
the ozone layer over Antarctica has depleted severely, according to the World Meteorological Organisation ( wmo ), a un agency.
Corals, maths and satellites
Issue Date: Sep 15, 2000
a canadian researcher has discovered answer to one of the most crucial environmental challenges facing the world: how to save coral reefs. Ellsworth LeDrew, a geography professor at the University of Waterloo in Ontario, has devised a mathematical formula that will automatically scan satellite images to uncover changes in coral reefs.
