Showing posts with label Geological Survey of India. Show all posts
Showing posts with label Geological Survey of India. Show all posts

Villagers oppose move to permit quarrying

Radhakrishnan Kuttoor
The Hindu, March 13, 2016 
The People’s Action Council has taken strong exception to a move by the grama panchayat to permit resumption of granite quarrying on the environmentally fragile Chembanmudy hill in Naranamoozhy panchayat in Ranni taluk.
Action council convener Shaji Pathalil told The Hindu that the panchayat had decided to seek legal opinion on the request submitted by a quarry owner to resume granite quarrying at Chembanmudy. Mr. Shaji the panchayat’s move to consider the request to resume granite quarrying at Chembanmudy, in violation of various laws and rules pertaining to it as well as Western Ghats protection, was an anti-environment and anti-people act.
Chembanmudimala, stands 3,825 ft. above mean sea level. The unabated illegal operation of two giant granite quarries and crusher units in this environmentally fragile hilly tracts for about a decade was brought to a halt three years ago following strong public protest against it.
The hazardous silica dust flying from the quarry also posed a major health hazard in the locality. There was a rise in incidence of cancer as well as skin and and lung ailments in the Chembaoly-Vakamukku areas .
The villagers had organised themselves and resorted to direct action to protect themselves from the ill-effects of the illegal granite quarries and crusher units following the alleged denial of justice to them by the people’s representatives as well as the official machinery three years ago.
Mr. Shaji said an expert team attached to the Geological Survey of India had categorically stated in 2013 that no granite quarrying should be permitted at Chembanmudy without attending to the future threats and corrective measures.
During his visit to the affected area in 2013, Western Ghats Ecology Expert Panel chairman Madhav Gadgil too had strongly opposed quarrying at Chembanmudy

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Forecasting landslide in the Western Ghats


The Hindu,  January 3, 2016
A village-level early warning system based on rainfall threshold data and landslide records could be the most viable method for landslide risk management in the Western Ghats, according to a scientific paper presented at a workshop organised by the National Centre for Earth Science Studies here on Friday.
Presenting the paper, Pankaj Jaiswal from the Geological Survey of India said forecasting of the trigger, in this case the rainfall, could provide information on when landsliding would occur. This, in conjunction with landslide susceptibility maps, could be used to delineate potentially hazardous areas in the Western Ghats and provide early warning.
Dr. Jaiswal proposed the establishment of a threshold model for small river catchments or at the taluk level, along with installation of rain gauges at the village level, collection and dissemination of daily rainfall data and analysis of the data for threshold exceedance. The automated process could be implemented at the village level through panchayats. The paper also proposed public display of the threshold exceedance graph and susceptibility map to facilitate community-based response. Dr. Jaiswal explained how the GSI had modelled the rainfall threshold for the Nilgiri area using rainfall data and landslide records. The cost-effective model was successfully validated in November 2009 and deployed for village-level early warning.
Pointing out that high population density, unplanned settlements, unscientific slope cutting for infrastructure development, and transgress of population to hazardous areas posed a challenge for landslide risk management in areas like the Nilgiris, he said public awareness coupled with early warning could minimise the damage to life and property. Another paper by Kusala Rajendran from the Indian Institute of Science said the low-level seismic activity observed in parts of Kerala like the Wadakkancherry earthquake in 1993 and the couple of earthquakes that struck Pala in 2000 and 2001 were associated with the reactivation of shear zones.
Ms. Rajendran said a strong case of fluid-induced seismicity had been observed at the Idukki reservoir, noted for the low level activity that has decreased since the initial onset, but still persists and is in some ways related to the filling of the reservoir and rainfall in the catchment.

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