
TN to help 180 students crack entrance tests of top colleges
Indian Institute of Science
(IISc), Bengaluru.
In the first batch, the Tamil Nadu State Council for Higher Education (TANSCHE) is planning to shortlist 180 students studying in the final year BSc and MSc and provide them with coaching to gain admission into PG and PhD programmes in top institutes.
"We will select 60 students each in math, physics, and chemistry. They will be given residential training during winter and summer vacations," said M P Vijayakumar, vice-chairman of TANSCHE.
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The council has identified resource trainers, and they will train the students on topics relevant to these entrance tests. "There are 34 prominent research institutes, including IISc, IISERs, and Tata Institute of Fundamental Research (TIFR) across the country.
These institutes admit students into PG and PhD programmes based on entrance tests, including the Joint Entrance Screening Test (JEST), Graduate Aptitude Test (GATE), and IISER aptitude test," he added.
It also plans to train faculty members on teaching science subjects in an interesting manner. TANSCHE will equip 5,000 faculty members with modern, evidence-based pedagogical practices. "This initiative will focus on enhancing classroom engagement, promoting deeper learning, and fostering inquiry-led teaching environments. The council also plans to collaborate with IIT-M professors to develop the training module for the faculty members," Vijayakumar said.
In the assembly budget session this year, Tamil Nadu govt had announced the establishment of basic sciences and math research centres in Chennai and Coimbatore at a cost of 100 crore.
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Indian Express
4 hours ago
- Indian Express
How to reduce risks from glacial lake bursts and carry out effective rescue operations
The breaking of a glacial lake accompanied by heavy rain is suspected by some experts to have caused the flash flood in Dharali village in Uttarkashi in Uttarakhand on Tuesday (August 5). Glaciologist Anil V Kulkarni, a distinguished scientist at Divecha Centre for Climate Change at the Indian Institute of Science, Bengaluru, has told The Indian Express that satellite images from September 2022, a non-winter month, showed evidence for past lake formations in the area from where the Kheer Ganga river, which caused the flood, originates. If another lake had indeed formed recently, it could have been breached due to movements in glacier mass, Dr Kulkarni said. Officials at the National Disaster Management Authority (NDMA) said they were looking at the possible detachment of a glacial snout (the 'nose' of a glacier where it breaks) that could have carried massive quantities of debris downstream. More than 60 people are still reported to be missing as rescue operations entered the fourth day on Friday. In October 2020, the NDMA, which is headed by Prime Minister Narendra Modi, had issued detailed guidelines on ways to deal with disasters caused by what is technically referred to as a Glacial Lake Outburst Flood (GLOF). What are GLOFs, and how vulnerable are the Himalayas to these phenomena? According to the NDMA, the retreat of glaciers as a result of climate change that is occurring in most parts of the Hindu Kush Himalayas has given rise to numerous new glacial lakes, breaches in which can cause Glacial Lake Outburst Floods (GLOFs). A GLOF occurs when a large mass of water dammed by a glacier or a moraine is released suddenly. When glaciers melt, the water in these glacial lakes accumulates behind loose naturally-formed 'glacial/ moraine dams' made of ice, sand, pebbles, and ice residue. Unlike earthen dams, the weak structure of the moraine dam leads to its abrupt failure, which can release millions of cubic metres of water in a short time, causing catastrophic flooding downstream. Peak flows as high as 15,000 cubic metres per second have been recorded during such events. Since glaciers in the Himalayas are in a retreating phase, glacial lakes are growing, and pose a potentially large risk to downstream infrastructure and life. The National Remote Sensing Centre (NRSC) had completed a project during 2011-15 on 'Inventory and Monitoring of Glacial Lakes/ Water Bodies in the Himalayan Region of Indian River Basins', sponsored by the Climate Change Directorate of the Central Water Commission (CWC). It was observed at the time that there were 352, 283, and 1,393 glacial lakes and water bodies in the river basins of the Indus, Ganga, and Brahmaputra respectively. How can the risks from GLOFs be reduced? The NDMA guidelines say that risk reduction has to begin with identifying and mapping such lakes, taking structural measures to prevent their sudden breaches, and establishing mechanisms to save lives and property in times of a breach. According to the NDMA, potentially dangerous lakes can be identified on the basis of the condition of lakes, dams, associated mother glaciers, and topographic features around the lakes and glaciers. The identification of these lakes are based on field observations, processes and records of past events, geomorphological and geotechnical characteristics of the lake/ dam and its surroundings, and other physical conditions. NDMA has recommended the use of Synthetic Aperture Radar (SAR) imagery to detect changes in water bodies, including the formation of new lakes, during the monsoon months. It has said that methods and protocols could be developed to allow all-year remote monitoring of lake bodies from space as a complement and a precursor to ground-based early warning systems at critical lakes. Structurally, the management of the situation requires a reduction in the volume of the water in the lake. This can be done through controlled breaching, the construction of an outlet-control structure, pumping or siphoning out the water from the lake, and making a tunnel through the moraine barrier or under an ice dam. One such landslide that occurred along the Phuktal river, a tributary of the Zanskar river, on December 31, 2014 about 90 km from Padum in Kargil district of Ladakh, led to the blockage of the river and eventually a potential flood situation on May 7, 2015. The NDMA created an Expert Task Force drawn from various organisations, which, along with the Indian Army, used controlled blasting and manual excavation to clear the landslide debris and channel the water from the dammed river. How well is India prepared to handle situations such as these? According to NDMA, while the Central Water Commission (CWC) has done some work on the identification of such lakes, work on building a robust early warning system (EWS) and a broad framework for infrastructure development, construction, and excavation in vulnerable zones is still continuing. 'In contrast to other countries, there are no uniform codes for excavation, construction, and grading codes in India. Restricting constructions and development in GLOF/ LLOF prone areas is a very efficient means to reduce risks at no cost,' the NDMA guidelines said. According to the NDMA, no construction of habitation should be allowed in the high-hazard zone. 'Existing buildings are to be relocated to a safer nearby region and all the resources for the relocation have to be managed by Central/ State governments. New infrastructure in the medium hazard zone have to be accompanied by specific protection measures,' it said. NDMA has also emphasized that land use planning which avoids the hazards and minimizes the risks is the most effective and economical way to reduce losses caused due to landslides. 'There are no widely accepted procedures or regulation in India for land use planning in the GLOF/ LLOF prone areas. Such regulations need to be developed concerning the increased risk of future GLOF/LLOF events. …There should be monitoring systems prior to, during, and after construction of infrastructure and settlements in the downstream area,' it has said. What is the status of India's Early Warning Systems (EWS) for such situations? One of the most promising options for efficient and effective disaster risk management is the implementation of EWS. The number of implemented and operational GLOF EWS is still very small, even at the global scale. In the Himalayan region, only three cases – two in Nepal and one in China – have been reported where sensor- and monitoring-based technical systems for GLOF early warning have been implemented. However, India does have a remarkable history of successful warnings in relation to Landslide Lake Outburst Floods (LLOFs) dating back to the 19th century. In 1894, after a landslide in Gohna in today's Uttarakhand dammed the main river, the engineer in charge estimated on July 5 of that year that the lake would overflow the dam in mid-August – which eventually happened. Despite the devastating impact of the flood, including washing away of most of the buildings along the river and severe destruction in the town of Srinagar (Uttarakhand), no deaths were reported, thanks to the precise prediction of the event and related efficient dissemination of the early warning to the population. This was made possible by the installation of a telephone line between the lake and downstream towns such as Chamoli, Srinagar, etc. What are the guidelines for rescue operations in case of a disaster? * Apart from calling in specialised forces such as the National Disaster Response Force (NDRF), Indo-Tibetan Border Police (ITBP) and the Indian Army, the NDMA has emphasised on the need to have trained local manpower. 'Experience has shown that over 80 per cent of search and rescue is carried out by the local community before the intervention of the state machinery and specialised search and rescue teams. Thus, trained and equipped teams consisting of local people must be set up in GLOF and LLOF prone areas,' the NDMA has said. These local teams, it has said, will assist in planning and setting up emergency shelters, distributing relief packages, identifying missing people, and addressing the needs for food, health care, water supply and sanitation, education, etc. They will also be useful in identifying the most vulnerable people who may need special assistance following the disaster. * The NDMA has also called for comprehensive alarm systems. 'Since GLOFs are very fast processes, an evacuation must be executed within a very short time, [which] requires an alarm infrastructure, clear protocols for all involved actors, and capacitation of the involved population and authorities. Besides classical infrastructure [such as] acoustic alarms by sirens, modern communication technology using cell phones can [be used],' the NDMA has said. * Specialized heavy earthmoving and search and rescue equipment should be made available to help clear debris and carry out search and rescue operations. It has also asked for motor launches, country boats, inflatable rubber boats, life jackets, lifebuoys, and similar equipment. Acknowledging that earthmovers cannot at times reach the disaster spot due to inaccessibility or roads being washed away, the NDMA has asked for 'innovative methods using locally available natural resources' to be used. 'It is important to innovate and design lighter machinery, which are more suitable to be carried in the mountains in a disassembled form,' it has said, adding that the disassembled parts can be carried in a helicopter and assembled at the spot. * It has asked authorities to build temporary shelters for the local people in raised locations to ensure resilience to landslides and floods. * Emergency medical response should be provided by Quick Reaction Medical Teams (QRMTs), mobile field hospitals, Accident Relief Medical Vans (ARMVs), and heli-ambulances in areas that cannot be accessed by roads. 'They will be activated to reach the affected areas immediately, along with dressing material, splints, portable X-ray machines, mobile operation theatres, resuscitation equipment and life-saving drugs, etc,' it has said. * It has also suggested the psychological counselling of victims, apart from the dissemination of accurate information following the disaster through press conferences and the use of mass media.


Indian Express
19 hours ago
- Indian Express
Did a glacial lake breach trigger the Dharali disaster? Experts find some clues
As authorities await clear satellite imagery to pinpoint the exact cause behind the flash flood and wall of debris that destroyed Dharali village in Uttarakhand, a top expert has suggested the possibility of breach in a glacial lake that could have formed above the Kheer Ganga river. Senior glaciologist Anil V Kulkarni told The Indian Express that satellite images from September 2022, a non-winter month, showed clues of past lake formations in the area where the Kheer Ganga originates from. If a lake had indeed formed recently, it could have been breached due to movements in glacier mass, said Kulkarni, a distinguished scientist at Divecha Centre for Climate Change, Indian Institute of Science. 'The Kheer Ganga originates from glaciated terrain and September 2022 imagery shows that snow was melted, and one can clearly see landforms. A well-developed deglaciated valley can also be seen. This deglaciated valley is bounded by end moraine and a small river is passing between the end moraine and a side wall,' he said. An end moraine is typically the far or end portion of a glacier mass and is made up of rocks, debris and sediments. Kulkarni said a meandering stream was above the end moraine, indicating terrain that could have seen lake formations in the past. Kulkarni said there were indications that the lake might have formed due to a landslide from the end moraine. 'The (Dharali) flash flood of mud flow might have been caused due to an outburst of the lake. This could also explain past floods in the Kheer Ganga River. The channel is very steep and hence it must have crashed down quickly,' he said. Glacial lakes are usually formed when meltwater from glaciers accumulates in terrains that are eroded or naturally dammed by movement of glaciers. In the recent glacial lake outburst flood events, such as the South Lhonak lake incident in Sikkim in October 2023, about 14.7 million cubic metres of mass of ice, rock and sediments crashed into the lake, sending water, equal to 20,000 Olympic-sized swimming pools, crashing downstream. Past analysis has shown, like in the case of the Kedarnath disaster, that there was a moraine dam that held together the Gandhi Sarovar or Chorabari lake above Kedarnath, Kulkarni said. Officials from the National Disaster Management Authority (NDMA) said they were looking at a possible detachment of a glacial snout (the nose where glacier breaks) that could have carried massive quantities of debris downstream. However, the officials added that they were coordinating with the National Remote Sensing Centre (NRSC) to analyse sharper images of the period leading up to the disaster. An award-winning journalist with 14 years of experience, Nikhil Ghanekar is an Assistant Editor with the National Bureau [Government] of The Indian Express in New Delhi. He primarily covers environmental policy matters which involve tracking key decisions and inner workings of the Ministry of Environment, Forest and Climate Change. He also covers the functioning of the National Green Tribunal and writes on the impact of environmental policies on wildlife conservation, forestry issues and climate change. Nikhil joined The Indian Express in 2024. Originally from Mumbai, he has worked in publications such as Tehelka, Hindustan Times, DNA Newspaper, News18 and Indiaspend. In the past 14 years, he has written on a range of subjects such as sports, current affairs, civic issues, city centric environment news, central government policies and politics. ... Read More


New Indian Express
a day ago
- New Indian Express
Experts: Continuous monitoring needed to avert landslides in Karnataka
BENGALURU: While technological interventions and continuous relaying of information can help avert tragedies, experts point out that it is also imperative to have a dedicated team of people to continuously monitor and analyse data. Experts point out that there are multiple government and private agencies working, but there is a lack of coordination. There is also a major lack of scientific input across the country. Prof GL Sivakumar Babu, Geotechnical Engineering Division, Civil Engineering Department, IISc, said there is a need to create a group of people who will be dedicated to studying the same. Stability in data management and working is needed. Government officials are posted for a short duration, and they lack the expertise. The government should consider investing in such long-term interventions rather than focusing more on compensation and loss mitigation, he said. Experts pointed out that there is a growing need to invest more in technology. Prof Sajeev Krishnan from the Centre for Earth Sciences, IISc, said that landslides are more likely to occur in the Western Ghats because of the steep slopes. Thus, areas like Coorg, Mangaluru, Idukki and Goa are vulnerable. Similar is the case with the Himalayan regions in India, where the slopes are steeper. Another expert geologist, working with the government, said, 'One of the prime reasons for landslides to occur is the lack of creation of a small drainage system in the hills when they are cut for civil works. This is the basic mistake which is being consistently made, apart from the improper cutting of the slopes. It is common sense to understand that when a terrain is cut or drilled, you are making the region vulnerable to tragedies. Putting pipes to drain out water from the saturated soil during monsoon is one simple solution which has been suggested but not followed. Another crucial negligence is not undertaking regular carrying capacity studies. Each time a terrain is altered, the carrying capacity and environmental impact change. Thus, a dedicated team to study all this regularly is needed.' An official from the Karnataka State Natural Disaster Monitoring Centre said a simple method of averting tragedies is not to undertake any construction or repair works during monsoon. They should be completed and tested before monsoon, but how projects are approved, executed and how tenders are released, inadvertently works are undertaken during monsoon, making areas more vulnerable to tragedies.