Showing posts with label causes. Show all posts
Showing posts with label causes. Show all posts

Friday, January 31, 2025

The Oct 2023 Teesta Valley GLOF disaster gets its due recognition: An article published on the disaster in SCIENCE MAGAZINE

The GLOF sweeping past the Teesta bazar (W Bengal) on 04Oct2023. This drone photo by Praveen is certainly one of the most iconic images of a GLOF.

The SCIENCE MAGAZINE (https://www.science.org) is widely recognized as the world's most prestigious journal on science, publishing the very best in research across the sciences, with articles that consistently rank among the most cited in the world. It is published by the American Association for the Advancement of Science (AAAS), the world’s oldest and largest general science organization.
Dr Ashim Sattar (IIT Bhubaneshwer) is a glaciologist who has done a huge amount of research on the South Lhonak glacial lake and had almost predicted accurately the GLOF which occurred on 03/04Oct2023. I have quoted extensively from his write up earlier in this blog and had the good fortune of meeting him at Chitrey, in the Teesta valley last year when he was enroute to Gangtok, Sikkim.

With Ashim (left) on 21Feb2024 at Chitrey
In our brief interaction, he mentioned he was working with many world experts on a paper on the 03/04Oct2023 Teesta Valley GLOF disaster which I daresay was all but ignored by government and the media even  though it was the largest GLOF disaster in the Himalayas in the recent past.
Since then I have personally had many interactions with him, shared photographs of the GLOF and affected areas and discussed the impact at the many places we had visited while recording the GLOF.
Even though I am unaware of the technical details of the mammoth work that Ashim and all the associated scientists have put in, I know getting it published in Science Magazine was another huge challenge and it took months of meticulous work by Ashim with literally many emails being exchanged between all of us.
The full article published by SCIENCE MAGAZINE yesterday, is here (https://www.science.org/doi/10.1126/science.ads2659)
In addition, Dr Dave Petley, VC Univeristy of Hull (UK) who is one of the co - authors has published his synopsis of the whole article - which is here (https://eos.org/thelandslideblog/sikkim-glof-october-2023)
My grateful thanks to Dr Ashim Sattar and all the eminent scientists who devoted so much time and effort towards this article.

Praful Rao
SaveTheHills
savethehills@gmail.com
9475033744


Saturday, November 12, 2022

Introduction to Landslide Hazards: A documentary by SaveTheHills with the help of Project Landslip

 As I keep saying, landslides and momos are a part of every day life in the Darjeeling-Sikkim Himalaya and the sooner we learn to live with this hazard the better.
As such, generating awareness about landslides is important and has always been one of the main roles of STH.

Towards this end, we have just completed an introductory documentary on landslide hazards - it is in Nepali (with English subtitles). The link is here
We will have two more documentaries as a follow up.
STH thanks Project Landslip for all the technical advice and help in making this video possible.

Praful Rao
Kalimpong district
Darjeeling-Sikkim Himalaya

Monday, August 4, 2014

A village called Malin, in Pune Maharastra

From the TImes of India (01Aug2014)


Govt projects are to blame for Pune landslide tragedy: Experts
PUNE/ MUMBAI: Torrential rains may have triggered the landslide on Wednesday that buried Pune's Malin village, but experts say short-sighted government policy and shoddy implementation of its schemes are the major underlying factors for the tragedy.
Sahas Manch, an NGO working in the area, has blamed abject carelessness of government officials in measuring and levelling land for the Padkai scheme. Under this tribal employment project implemented under MNREGA, hill slopes are flattened and trees are cut down to develop cultivable plots. The NGO claimed that government officials did not survey the area thoroughly and allotted 25 plots on steep slopes.
Land was levelled by uprooting trees, which in turn loosened the soil, stone bunds were not built to contain erosion and nullahs were not cut into the soil to allow drainage. Such criminal errors caused the landslide, it alleged. On the other hand, massive deforestation for a windmill project along the hillside was equally responsible, said acclaimed ecologist Dr Madhav Gadgil.
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The Malin Mud Avalanche Tragedy of 30 July 2014

- The time to ask right questions

The mud avalanche that ravaged the Malin village in the Pune district of the State of Maharashtra on the 30 July is hardly any different in its end effect from the rock avalanche tragedy which struck the village of Malpa in the State of Uttarakhand on 18 August 1998. Both obliterated the villages, located at the foot of their respective ecologically ruined, fragile mountain slopes, known to be unsafe. Of the comparable population of about 250 in the above two cases, 210 people were buried alive by the Malpa rock avalanche and the death toll in the case of Malin mud avalanche tragedy may not turn out to be significantly different. Rescue teams at Malpa battled to exhume those buried under the debris-cover as thick as 15 m and the National Disaster Response Force now has no easier task dealing with 7m thick muck at the foot of the Bhimashankar hill, fouled with bricks, thatch, gas cylinders, clothes and bicycle parts. The oft-repeated standard and stale reason put forward to explain the two ghastly events, is the rainfall preceding the events. At Malpa, the avalanche had struck in the wee hours of the 18 August 1998. On the previous day at 2130 hrs, rainfall resumed and by about 00: 37 hours, Malpa was completely wiped out of the map of Uttarakhand. At Malin, the tragedy occurred in the early hours of 30th July 2014 around 07:30 am, explained in terms of the rainfall of 108mm on the previous day. These are only half-truths as rainfall has been a seasonal visitor for centuries on end. In both the cases, the blame also fell on factors such as ecological fragility of slopes, deforestation, improper landuse, quarrying. At Malin, the government has, as usual, assured the victims of all possible assistance, payments to compensate for every life lost with assurance of rehabilitation of victims. Such declarations are familiar to our ears. In the next few months, it is not unlikely that Malin will be forgotten the same way as we have forgotten Malpa, until we get another jolt.
The end of every tragedy is usually the beginning of the season of meetings, conferences, seminars and workshops. The ensuing debates on whether the disaster was natural or man-made and whether it could have been prevented naturally fade after generating a lot of heat but very little light. The post-mortem studies are more sketchy than scientific and these too end up with piles of reports and papers, which eventually gather dust on the shelf.
It is high time we dare ask the right questions. National Disaster Management Act of 2005 gave a call for a paradigm shift from the relief-centred response to disaster prevention and mitigation and yet no one speak a word of prevention , leaving everything to the heroic deeds of the National Disaster Response Force. The various
guidelines issued by the National Disaster Management Authority aim at zero tolerance for non-engineered constructions and for flouting of techno-legal regime and yet no one raises even a little finger to investigate disasters , affix accountability , learn lessons and make someone accountable to ensure that the same mistakes are not repeated. The country has designated Geological Survey of India as the nodal agency for landslides but that declaration made years ago, and ratified yet again, remains a secret to most of the landslide victims, and our country men at large.
We will never be able to avert future disasters unless the mandated institutions measure up to their responsibilities in a coordinated fashion with eyes fixed on clock and compass. The foremost responsibility is to usher the culture of safety in a way the progress is seen on the ground. Antoine de Saint ExupĂ©ry, a French Writer sums it up beautifully when he says that “If you want to build a ship, don’t drum up men to collect wood and don’t assign them tasks and work, but rather teach them to long for the endless immensity of the sea.”
The other questions that must be asked are why the tragedy could not have been avoided, and why the response was not quicker? The Malpa tragedy occurred at 00:37 am on the 19 August 2014. The thunderous sound of the rock avalanche was heard by many around 00:25 am. Five minutes later, sky witnessed fireworks due to colliding boulders. Closely on the heels of this came the fury of a dust storm. We had no preparedness to capture these signals and the first message of the tragedy could be radioed from the ITBP only at 05:25 am, and the real help came hours later. Why did we not learn from this?
Like at Malpa, the residents of the neighbouring Asane village had sensed the incoming mud avalanche at Milan by the loud noise heard at about 03:00 am. There were evidences of howling wind as well, similar to the experience at Malpa. There being no early warning system in place, the village Malin too did not receive attention until a bus driver encountered the devastated landscape at 07:30 am, and the Manchar city authorities got the news thereafter. National Disaster Response Force (NDRF) personnel could also reach the site only by the afternoon. District collector reportedly came to know about the incident at 9am. We lost hours at a time we were short of seconds!
Why no attempts were made to prevent abuse of land, educate the people on the perceived threat, do’s and don’ts, restore ecological stability to the area and disallow non-engineered dressing of the slopes for agriculture. Was it difficult for the government to keep a check on felling of trees and stone quarrying in the area , especially when landslides have been a common occurrence in this part of the district, and only last year, the neighbouring village of Kolthawadi was hit by a landslide.
Whenever landslide disasters strike, we rush to lean on fixed ideas in our minds. It has almost become ritualistic to name rainfall to explain away cataclysmic floods and devastating landslide events, without even attempting to understand the slope
dynamics. We can understand landslides only by systematic geotechnical, geomorphologic, hydro-geological and seismic characterization of slopes, and study of the environmental impact of urbanization. The question to ask is-why then scientific investigations in our landslide prone areas are exceptions rather than a rule? The earlier we insist on prevention by taking recourse to scientific investigations, the better.

Prof RK Bhandari
Email: rajmee@yahoo.com;
Mobile: +919810345123
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Prof RK Bhandari is a distinguished alumnus from IIT Mumbai, a Fellow of Indian National Academy of Engineering  and a recipient of the coveted Varne’s Medal for Excellence in Research and Practice of Landslides.
Read his article on Uttarakhand disaster here

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Praful Rao,
Kalimpong,
Dist Darjeeling


Wednesday, July 30, 2014

Fatal landslide in Pune

Excerpt from Hindustan Times
"Casualties were feared as nearly 200 people were left trapped inside houses on a hillside following a landslide in Maharashtra’s Pune district on Wednesday.
Police official Vinod Pawar told mediapersons the landslide struck Malin village in Ambegaon tehsil around 5am after heavy downpour loosened earth and dislodged rocks and boulders.
At least 40 houses were feared buried under the debris from a hill that collapsed while residents were sleeping. Television footage showed the side of the hill shaved off, with large amounts of mud, muddy water and logs piled below."
Read full article here

Comments by Praful Rao
  • Having worked on landslides for the past 7 yrs, I am pretty much sure the number of deaths will climb to much higher than the 10 being reported now.
  • Rainfall data obtained of Pune from 23Jul-30Jul2014 (from here) shows that there was heavy rainfall only on 30Jul2014 (Pune Pashan agro record show 109mm today, other stations show significantly less amounts of rainfall) 
  • I cannot help wondering whether
    a. There was any early warning about the heavy rain specifically in the region
    b. Anthropogenic factors also added to the landslide trigger (since the region had a huge deficiency in rainfall till recently and IMD AWS rainfall data for the last  week does not really show catastrophic rainfall).

    Praful Rao
    Kalimpong,
    Dist Darjeeling