Connect with us

Society

Death toll 280 & counting: what is the science behind Kerala’s deadly landslides?

Haunting images reveal uprooted trees, homes reduced to rubble, and bridges shattered, all swallowed by muddied waters. Each scene tells a story of loss, despair, and the enduring resilience of those affected

Avatar

Published

on

Image credit: PRO Defence Kochi

The landslides in Wayanad, a tourist-friendly district in the southern Indian state of Kerala, are rapidly becoming one of the most devastating natural disasters the region has ever seen. Entire areas in Chooralmala and Mundakai villages have been washed away, with local media reporting the destruction of over 250 homes. Tragically, the death toll has surpassed 280, marking a grim chapter in the region’s history.

The disaster, the worst since the devastating floods of 2018, has left a heart-breaking trail of destruction. Haunting images reveal uprooted trees, homes reduced to rubble, and bridges shattered, all swallowed by muddied waters. Each scene tells a story of loss, despair, and the enduring resilience of those affected.

Nestled in the rugged terrain of the Western Ghats, Wayanad is renowned for its stunning vistas and is a cherished tourist destination, attracting over 100,000 visitors each year. This picturesque district, home to indigenous tribes and dotted with lush tea and cardamom estates, holds a unique charm. Yet, beneath its beauty lies a history of vulnerability, and prone to landslides.

A 2011 report by a panel of experts led by ecologist Madhav Gadgil classified the entire Wayanad region as “fragile, medium fragile, and less fragile,” highlighting its susceptibility to landslides. This designation underscores the delicate balance of this ecologically sensitive area, where the enchanting landscape masks the underlying risks faced by its resilient inhabitants.

Indian Army Columns along with NDRF, State rescue teams, CoastGuard, IndianNavy and IAF relentlessly working to address the crisis in Wayanad/ Image credit: Southern Command Indian Army

In the past decade alone, landslides have claimed the lives of 255 people in Kerala. In 2018, 109 people died in landslides, and in 2020 and 2021, around 182 lives were lost to these disasters. August 2020 saw a particularly deadly landslide in Pettimudi, which resulted in 66 fatalities.

Understanding Landslides

Landslides, also known as landslips, encompass a dramatic and diverse array of ground movements that can reshape landscapes in an instant. These natural events, ranging from rockfalls and mudflows to slope failures and debris flows, occur across various environments. Whether cascading down steep mountain ranges, eroding coastal cliffs, or shifting underwater as submarine landslides, these movements highlight the dynamic and unpredictable nature of the terrain. As communities and scientists grapple with their impacts, the stories behind these powerful geological forces continue to unfold.

While gravity is the main force behind landslides, various factors influence slope stability, creating conditions that make a slope vulnerable to failure. Often, a specific event like heavy rainfall, an earthquake, or construction activity triggers a landslide, though the precise cause isn’t always identifiable.

Human activities often exacerbate landslides. Urban sprawl, mining, and deforestation contribute to land degradation, reducing soil stabilization by vegetation. Additionally, global warming and other environmental impacts increase the frequency of extreme weather events, further triggering landslides.

The Catastrophe in Wayanad

Mundakai, the epicentre of a series of landslides, received 572 mm of rain in 48 hours. According to the India Meteorological Department, rainfall exceeding 204.4 mm per day is considered extremely heavy. Experts attribute the landslide in the Mundakai region to this heavy rainfall. In 2019, the Puthumala landslide occurred just two to three kilometres from the current disaster site.

Dr. S. Abhilash from the Cochin University of Science and Technology highlighted the region’s geographical vulnerability. He stated in a video shared on the university’s official Facebook page that heavy nighttime rain was the primary cause of the landslide.

The phenomenon, technically known as a mesoscale mini cloudburst, involves 15 to 20 cm of rain falling within two to three hours. Such events are now occurring in North Kerala, significantly impacting the region

In the past two weeks, the Konkan region (a stretch of land by the western coast of India) experienced heavy rainfall due to a low-pressure area from the Gujarat coast to North Kerala. North Kerala received 50 to 70 percent more rain than usual during this period, with areas including Wayanad recording over 24 cm of rain. The thickening of clouds in the southeast Arabian region contributed to this heavy rainfall.

This phenomenon, technically known as a mesoscale mini cloudburst, involves 15 to 20 cm of rain falling within two to three hours. Such events are now occurring in North Kerala, significantly impacting the region.

Mesoscale Cloudbursts and Kerala Floods

An earlier study published in Science Direct linked mesoscale cloudbursts to the 2019 Kerala floods. Researchers at the Advanced Centre for Atmospheric Radar Research (ACARR), Cochin University of Science and Technology (CUSAT), observed that rainfall exceeding 50 mm in two hours was reported in many places from 8 a.m. to 10 p.m. on August 8, 2019.

The Western Ghats, which run through Kerala, are prone to frequent landslides during the biannual monsoon seasons. The Gadgil Committee report classified areas like Kavalappara in Malappuram district and Puthumala in Wayanad district, which experienced fatal landslides in 2020, as Ecologically Fragile Land (EFL). Climate change exacerbates these issues.

Kerala has faced significant challenges due to climate change in recent years. The state endured a severe drought in 2015, followed by the devastating Ockhi cyclone in 2017. In 2018 and 2019, massive floods and landslides wreaked havoc.

The extreme rainfall of August 2019, which caused landslides and mudslides, leading to downstream flooding, was a ‘mesoscale cloudburst’—a rare phenomenon in Kerala usually seen in North India, according to the study published in ScienceDirect.

Given the increasing intensity of rainfall, the probability of landslides in the Western Ghats’ high to mid-land slopes during the monsoon seasons rises. Human intervention, primarily for crop cultivation, has altered the Western Ghats, making the region more prone to landslides of various scales.

Click to comment

Leave a Reply

Your email address will not be published. Required fields are marked *

EDUNEWS & VIEWS

Will Canada remain a hub for Indian students amidst new restrictions?

New restrictions on student visas and work permits have sparked debate about the future of Canada as a preferred educational hub

Dipin Damodharan

Published

on

Image credit: Jose Jacob

As Canada continues to position itself as a leading destination for international students, recent policy changes are raising concerns about its appeal, particularly among Indian students. New restrictions on student visas and work permits have sparked debate about the future of Canada as a preferred educational hub.

In the past decade, Canada has seen a surge in international students, with Indian nationals being a significant contributor to this growth. According to recent statistics, Indian students constitute one of the largest groups of international students in Canada. India sent 225,000 students to Canada, a number that rose to 278,000 in 2023. For the first half of 2024, the count has reached 100,000 students. However, new regulations imposed by Canadian authorities aim to address issues of overstaying and unauthorized work, potentially impacting this vibrant demographic.

Policy Changes and Immediate Implications

The Canadian government’s recent policy changes include stricter requirements for student visas and modifications to work permit conditions. Under the new regulations, international students will face more rigorous checks before their applications are approved. Additionally, there are enhanced restrictions on the type and amount of work international students can undertake while studying.

The new rules mandate that students must now provide more detailed evidence of financial stability and academic intentions. Moreover, there will be an increase in the frequency of status reviews and a more stringent enforcement of existing work permit regulations. These measures are designed to curb the misuse of student visas and ensure that students adhere to their intended study programs.

For many Indian students, these changes represent a significant shift in their academic and professional plans. “The new restrictions have created a wave of uncertainty among students planning to study in Canada,” says Arjun Patel, a recent high school graduate who was preparing to enroll in a Canadian university. “We’re concerned about how these policies will affect our ability to work part-time and support ourselves while studying.”

Impact on Current and Prospective Students

For current international students in Canada, the immediate impact of these policy changes includes increased stress over visa renewals and job security. Many students who rely on part-time work to support their education and living expenses might find themselves restricted by the new regulations. This could lead to financial strain and affect their academic performance.

Jose Jacob, a Canadian immigrant, attributes the recent restrictions on international students in Canada to a combination of political and economic factors. “Education is a billion-dollar industry for Canada,” Jacob notes. “When I arrived here, and for many years since, community colleges have been major promoters of study abroad programs. Many of these institutions are private community colleges operating like businesses. More foreign students mean higher fees, which significantly boosts the industry.”

Jose Jacob

Jacob also points out that the Trudeau government has traditionally been supportive of immigration. Under Prime Minister Justin Trudeau, Canada has welcomed international students, offered residency, and invited refugees. “Trudeau’s policies are driven by the immigrant vote bank,” Jacob explains.

Prospective students face the challenge of navigating a more complex visa application process. The enhanced scrutiny may lead to longer processing times and additional paperwork, potentially causing delays in starting their studies. “The increased documentation requirements and the possibility of visa rejections have made the application process more daunting,” notes Rina Sharma, a prospective student from Delhi. “We’re concerned about how these changes will affect our plans and whether it will be worth the investment.”

Canada’s Commitment to International Education

Despite the new restrictions, Canadian officials have reiterated their commitment to international education. They emphasize that the changes are intended to preserve the integrity of the student visa system and ensure that students are genuinely pursuing their educational goals. The recent decision to impose restrictions on foreign students came amid significant domestic protests. “The decision was announced during a period of considerable political pressure,” Jose Jacob adds. He also highlights that the rising cost of living and housing shortages in places such as Ontario have contributed to the government’s decision. “The surge in housing prices and the increase in the cost of goods led to saturation,” he says.

“Canada remains dedicated to attracting top talent from around the world,” says, a spokesperson of a global education consulting group. “These policy adjustments are necessary to prevent abuse of the system and to ensure that our programs continue to benefit students who are committed to their studies.”

Moreover, educational institutions in Canada are working to support international students through these transitions. Many universities are enhancing their advisory services to help students navigate the new regulations and adjust their plans accordingly.

The Future of Canada as an Educational Destination

As Canada navigates these new policy changes, it faces the challenge of maintaining its status as a leading destination for international students. While the regulations are designed to address specific issues, they must balance the need for oversight with the desire to remain an attractive option for students worldwide.

For Indian students, the changing landscape presents both challenges and opportunities. While the new restrictions may complicate the immediate future, Canada’s robust educational infrastructure and diverse academic offerings continue to make it a compelling choice for many. The key will be how well the country can adapt to these changes while continuing to offer a supportive and enriching environment for international learners.

Image credit: Jose Jacob

Jacob suggests that these new regulations are also aimed at curbing fraudulent courses. “Previously, the U.S. was marketed to Europeans as the ‘Land of Opportunities,’ attracting early settlers. Similarly, Canada has been marketed as a land of opportunity for Indian students. Community colleges have collaborated with local educational consulting agencies to promote this image. However, the situation has become too saturated. Technical jobs are in higher demand now, and Canada remains a good option for students in those fields.”

Jacob also warns prospective students about the financial realities of living in Canada. “For those coming here to make money, it’s important to understand that it’s not like the Gulf countries. Taxes are very high—13 percent on everything,” he advises. “It’s crucial to be aware of these factors before making the move.”

To sum up, as Canada adjusts its policies regarding international students, it will be crucial for both the government and educational institutions to address the concerns of students and ensure that the country remains a welcoming and viable destination for those seeking higher education. The coming months will reveal whether Canada can sustain its reputation as a global education hub amidst these evolving regulations.

Continue Reading

Society

Repurposed antidepressant shows promise as cost-effective treatment for breast cancer

The research, led by Dr. Asis Bala, reveals that Selegiline, a monoamine oxidase (MAO) inhibitor, could be repurposed as an anticancer therapeutic.

Avatar

Published

on

Image by Waldryano from Pixabay

In a groundbreaking study, researchers at the Institute of Advanced Study in Science and Technology (IASST) in Guwahati, India, have discovered that Selegiline, an antidepressant drug, may offer a cost-effective alternative for breast cancer treatment. The research, led by Dr. Asis Bala, reveals that Selegiline, a monoamine oxidase (MAO) inhibitor, could be repurposed as an anticancer therapeutic.

The team’s findings, published in the journal Medical Oncology, demonstrate that Selegiline interacts with ten genes associated with various cancers. Their preliminary tests on six different cancer cell lines showed Selegiline’s efficacy in targeting both estrogen and progesterone-positive (ER+ & PR+) and triple-negative breast cancer (TNBC) cells. This research group has shown that Selegiline (L-deprenyl), an antidepressant drug from a class of drugs called monoamine oxidase (MAO) inhibitors, might be applied as anticancer therapeutics for breast cancer.

Unlike conventional therapies that rely on reactive oxygen species (ROS) to induce cell death, Selegiline operates through a different mechanism. It has been shown to inhibit protein kinase C phosphorylation, a process believed to be involved in its cancer-fighting effects.

Selegiline showed integrated networking with genes and diseases of different cancers. It also showed the inhibitory effect of PKC phosphorylation and ROS-independent apoptosis in breast cancer cells.

This novel application of Selegiline marks a significant step forward in cancer research. The study’s results highlight the need for further investigation into the drug’s in vivo efficacy, optimal dosing, and potential side effects. This approach could pave the way for more accessible and affordable breast cancer treatments in the future.

Continue Reading

Society

India’s richest man wants to democratise AI with ‘Jio Brain’

Jio is developing a full suite of tools and platforms under the ‘Jio Brain’ initiative, which will span the entire AI lifecycle

Avatar

Published

on

Image credit: Pixabay

In a groundbreaking announcement at the 47th Annual General Meeting of Reliance Industries Limited on August, 29, India’s richest man, Mukesh Ambani, unveiled his ambitious plans to democratise artificial intelligence (AI) across the nation. The centrepiece of this vision is the ‘Jio Brain’ initiative, a comprehensive platform designed to bring “AI everywhere for everyone” in India.

Addressing shareholders, Ambani, the Chairman and Managing Director of Reliance Industries, emphasized the importance of making AI accessible and affordable to all Indians. “We are committed to ensuring that powerful AI models and services are available to everyone in India at the most affordable prices,” said Ambani.

Mukesh Ambani/Image credit: RIL

He revealed that Jio is developing a full suite of tools and platforms under the ‘Jio Brain’ initiative, which will span the entire AI life-cycle. This platform is set to become a powerful AI service that not only benefits Reliance but will also be offered to other enterprises.

A key part of this strategy is the creation of a national AI infrastructure, with plans to establish gigawatt-scale AI-ready data centres in Jamnagar, a city in the western Indian state of Gujarat . These centres will be powered entirely by Reliance’s green energy, reflecting the company’s commitment to sustainability and a greener future. “Our aim is to create the world’s lowest AI inferencing cost right here in India,” Ambani stated, highlighting the potential for India to become a global leader in AI applications.

To further support this vision, Jio will leverage its expertise in infrastructure, networking, operations, software, and data, in collaboration with global partners. The ultimate goal is to make AI applications more affordable in India than anywhere else, enabling widespread adoption across various sectors.

In addition to these developments, Ambani announced the Jio AI-Cloud Welcome offer, which includes up to 100 GB of free cloud storage. This offer is designed to support the ‘AI Everywhere for Everyone’ vision, allowing users to securely store and access their digital content and data with ease.

With ‘Jio Brain’ and its associated initiatives, Mukesh Ambani is positioning India at the forefront of the global AI revolution, democratising access to cutting-edge technology and setting the stage for a new era of connected intelligence in the country.

Continue Reading

Trending