Showing posts with label Disaster Management. Show all posts
Showing posts with label Disaster Management. Show all posts

Thursday, 5 May 2016

Uttarakhand forest fires

Often unquantified, the social and economic impacts of forest fires are considerable: lives are lost, health problems occur, animals are killed and the environment suffers
The disaster:
Lives lost: 5
Land gutted by forest fire: Almost 1,600 acres of land (hundreds of villages/clusters)
Forest Fire in India:
Almost 50-55% of the total forest cover in India is prone to forest fire annually
Indian State of Forest Report, 2015: Tropical thorn forest, Tropical dry evergreen forest and Subtropical pine forest - most prone to forest fires
Period: Between February & mid-June
Why— Soil moisture is at its lowest
Himalayan Belt:
Western Himalayan region- moist deciduous, tropical dry deciduous, temperate and sub-Alpine types
Prone to fires owing to less rain in the pre-monsoon period
More susceptible trees: Pine forest in Garhwal & Kumaon Hills
Forest Fire & Ecology
The ground vegetation is completely destructed— severe loss of biodiversity
oLoss of forest cover
oLoss to the wildlife habitat
oLoss of human lives
Emissions of Carbon in the Atmosphere (Climate change - lack of sustainable land use policy)
Expansion of deforested area— Change in landscape & micro-climate—Drying up of forest floor
Fires in the understorey of humid rainforests can cause tree mortality and canopy openness (Land transforms into ''savannah'')
Major Issues related to Indian Forests:
Definition of Forest: No proper definition charted out with environmentalists and the government authorities having their own version of what exactly a forest is.
Greed for Land:
Increased industrial activity
Need to increase agricultural production
Nexus between land developers & Timber Mafia
Climate Change:
Natural Disasters: Volcanoes, Tsunamis, Earthquakes, Cloudbursts in Himalayas, Droughts, Storms
Mild winter: More pests and diseases (insect infestations)
The El-Niño effect: contributes to increases in the frequency of drought and lightning strikes
A recent study of various forest conditions in Russia suggests that a 2°C rise in temperature could increase the area affected by forest fires by a factor of between one and a half and two
India's Efforts:
Intended Nationally Determined Contribution (INDCs): Pledged to
Increase its forest cover and improve the quality of forest cover
Create an additional carbon sink of 2.5 to 3 billion tonnes of Carbon Dioxide equivalent through additional forests and tree cover by 2030
Technology used for monitoring:
Satellite images to detect forest fires and its spread (INFFRAS)
Mapping of fire-sensitive zones as well as real-time data
Pre & post fire guidelines/warnings
Firefighting Techniques:
Clearance of stretches of ground vegetation in between forest areas to arrest the spread of forest fire
Beating the fire with the help of local community with specified certain equipment's
Difficult to implement technique: Helicopters spraying water or carbon dioxide
Way Ahead:
The lack of regulatory enforcement and contradictory policies and laws need to be tamed in order to arrest the loss—ASEAN's Zero Burning Policy needs to be reformed and given more teeth in order to keep the trend in check
Rural community is a major stakeholder and government should involve its large rural communities in preparing for the future— by utilizing effective intervention of community-led ''van panchayats'' (forest councils) in preventing fires.
Usage of biomass alternatives, including cooking gas, has had a beneficial impact on fire risk, and this must be expanded
The plantation sector can be tapped for reducing the clearance of ecologically important natural oak forests, by giving preference to growing useful fodder and timber trees

Monday, 2 May 2016

Salient features and applications of IRNSS

India entered an exclusive club of five nations that have their own satellite navigation and positioning system with the launch of IRNSS-1G recently known as Navic, the country's seventh navigation satellite.
Features of IRNSS:
  • IRNSS is similar to the global positioning system (GPS) of the US (24 satellites), Glonass of Russia, and Galileo of Europe, as well as China's Beidou.
  • It is a Constellation of seven satellites (3 in geostationary and 4 in geosynchronous orbit) will provide navigational services to South Asia
  • An area of 1,500 km from Indian boundaries will be covered under the navigational system.
  • Highly precise position, velocity and time informationin real time for authorized users on a variety of vehicles. The proof of concept of an independent regional navigation satellite system over India has been demonstrated for the targeted position accuracy of better than 20 metres over 24 hours of the day.
  • IRNSS will offer two services:
  • Standard Positioning Service: that will be accessible to anyone
  • Restricted Service:Will be available only to the military and other government-authorized users.
  • All seven IRNSS satellites will be at a height of about 36,000 km, taking a whole day to circle the Earth.
  • Launched by PSLV
  • Provides data with good accuracy for a single frequency user with the help of Ionospheric corrections.
Applications :
  • It has both commercial and strategic applications. It caters to the needs of civil aviation and for positioning, navigation and timing
  • With this, the country will not have to depend on a foreign power for military navigation. With the complete system in place, the armed forces will be able to find their position accurately in the battlegroundand direct ammunition and missiles deep into enemy territory
  • Will provide time-location coordinates on land, sea and air.
  • Cell phone apps-for mapping, driving, hiking in jungle and remote areas.
  • Forest department: Putting out wildfire, tracking endangered animals.
  • Fleet Managementg. taxi or truck company can monitor whether their driver is on right path or not.
  • Disaster Management.
  • During war: naval fleet Management, missile navigation etc.
  • The system can also be used for civilian navigation — aircraft, ships, railways and others.
  • Terrestrial navigation aid for hikers and travelers
  • Along with visual and voice navigation for drivers.
  • It can also be integrated into phones. Other civilian applications include mapping and vehicle and fleet management