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.

1 Comment

1 Comment

  1. Pingback: The wildfires, floods, and heatwaves: Understanding the science behind climate change - EDPUBLICA

Leave a Reply

Your email address will not be published.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

Society

Stand out and succeed: The power of differentiation

The author shares his insights on how embracing uniqueness and differentiation can be a powerful tool for success in business, drawing from examples of leading brands that have redefined their industries.

Dr. Sudheer Babu

Published

on

Image by Gerd Altmann from Pixabay

Have you ever worn socks with dazzling colours and unique designs that stand out from the ordinary? It might sound surprising, even unsettling, to some. Aren’t such socks meant for kids? However, Happy Socks, a Swedish company, thought differently. Their creativity lies in combining unusual colours and extraordinary designs, setting them apart from the rest.

You might wonder, who would buy such socks? The answer might surprise you. Today, Happy Socks’ market spans 90 countries. Delving into their success, we find that the uniqueness of their products is key. While competitors often think conventionally, Happy Socks strives to think differently. Today, their customers take pride and joy in wearing their brand.

Differentiation is a powerful strategy that can quickly capture the market’s attention. Entering a saturated, highly competitive market with products similar to those of competitors gives you slim chances of success. This is where differentiation becomes a winning strategy. Consumers are drawn to products that offer a unique experience.

Embracing your difference is the key to building a competitive advantage

Tesla created a stir in the electric car market with its unique features, capturing the hearts of consumers. It wasn’t just environmental friendliness and technology that drew people in. Tesla’s unparalleled beauty and distinct characteristics charmed consumers, setting it apart from other cars. Features like customization options, solar panels, rapid charging capabilities, and self-driving technology helped Tesla stand out. In a market expecting intense competition, Tesla managed to leave its unique mark through differentiation.

Embracing your difference is the key to building a competitive advantage. Entrepreneurs must evaluate whether they can provide experiences that are truly different from those of their competitors. At this point, price comparisons and competition become irrelevant. Consumers will gladly pay a premium for high-quality, distinctive products.

As the product’s features and qualities become ingrained in the consumer’s mind, they are drawn to the brand, marking the beginning of a long-lasting relationship. Creating this brand awareness should be the ultimate goal of marketing, as it helps establish dominance over competitors.

Once a product concept takes shape, entrepreneurs should focus on making it different. Recognizing that consumers crave unique experiences and high value makes this possible. Differentiation is a weapon against competition, helping you carve out a distinct space in the market.

Continue Reading

Society

Meet the Winners of the Infosys Prize 2024

For the first time in its history, the Infosys Prize has focused on recognizing exceptional researchers under the age of 40

Avatar

Published

on

Arun G. Chandrasekhar, Mahmood Kooria, Neena Gupta, Shyam-Gollakota, Vedika Khemani

The Infosys Science Foundation (ISF) has recently announced the winners of the Infosys Prize 2024, recognizing groundbreaking research across six categories: Economics, Engineering and Computer Science, Humanities and Social Sciences, Life Sciences, Mathematical Sciences, and Physical Sciences. The awards, each comprising a gold medal, citation, and a prize purse of $100,000, were presented at ISF’s office in Bengaluru, India.

For the first time in its history, the Infosys Prize has focused on recognizing exceptional researchers under the age of 40, highlighting the importance of early career achievements in shaping future innovations. The awards were selected by international panel of jurors and were announced by ISF trustees, including Kris Gopalakrishnan, Narayana Murthy, and Mohandas Pai.

The Infosys Prize 2024 Winners:

  • Economics: Arun Chandrasekhar (Stanford University) for his pioneering work on social and economic networks in development economics.
  • Engineering and Computer Science: Shyam Gollakota (University of Washington) for his innovations in smartphone-based healthcare tools and battery-free computing.
  • Humanities and Social Sciences: Mahmood Kooria (University of Edinburgh) for his contributions to the study of maritime Islam and Islamic law in shaping the Indian Ocean world.
  • Life Sciences: Siddhesh Kamat (Indian Institute of Science Education and Research, Pune) for his research on bioactive lipids and their role in cellular functions and diseases.
  • Mathematical Sciences: Neena Gupta (Indian Statistical Institute, Kolkata) for solving the Zariski Cancellation Problem in algebraic geometry.
  • Physical Sciences: Vedika Khemani (Stanford University) for her pathbreaking work on time-crystals and non-equilibrium quantum matter.

The Infosys Prize remains India’s most prestigious award for scientific excellence, with past laureates going on to receive global honours, including the Nobel Prize and the Fields Medal.

Kris Gopalakrishnan, President of ISF, highlighted the importance of recognizing early career researchers, whose work holds immense potential for transformative societal impact.

Continue Reading

Society

RFK Jr. at HHS: A health reformer or a risk to public safety?

Robert f. Kennedy jr. And the future of US Health policy: A closer look at the implications of his anti-vaccine stance and food reform efforts

Avatar

Published

on

Robert F. Kennedy Jr. during Libertarian Convention in Washington, D.C. Credit: mahanow.org

The recent announcement that Robert F. Kennedy (RFK) Jr. has been tapped to head the U.S. Department of Health and Human Services (HHS) under the second term of President Donald Trump has sent shockwaves through the health and scientific communities. Kennedy, a well-known anti-vaccine activist, has long championed controversial views about immunization, leading many to worry about the potential consequences of his appointment for public health in the United States. However, while his positions on vaccines remain contentious, his advocacy for stricter regulations on processed foods, particularly in school nutrition, raises an important debate about the intersection of health, policy, and public welfare.

The Anti-Vaccine Movement: A Dangerous Shift?

Robert F. Kennedy Jr.’s views on vaccines are well-documented and widely criticized by the medical community. He has persistently questioned the safety and efficacy of vaccines, despite overwhelming scientific consensus that vaccines are among the most effective public health tools available to prevent infectious diseases. His stance runs counter to decades of research that have demonstrated the life-saving benefits of vaccines, from eradicating smallpox to virtually eliminating polio and reducing the incidence of diseases like measles, mumps, and rubella.

This would particularly threaten vulnerable populations, such as infants, elderly individuals…

Kennedy’s vocal opposition to vaccine mandates, coupled with his belief that vaccines may cause harm—particularly to children—has placed him at odds with leading medical experts and public health authorities. His appointment as the head of HHS, the agency responsible for overseeing the nation’s public health policy, could have profound consequences. If Kennedy uses this platform to advocate for policies that reduce vaccination rates or diminish the credibility of scientific research supporting vaccines, it could lead to a resurgence of preventable diseases. This would particularly threaten vulnerable populations, such as infants, elderly individuals, and those with compromised immune systems, who rely on herd immunity to stay safe.

In the context of the ongoing global health challenges, including the COVID-19 pandemic, Kennedy’s stance on vaccines poses a potential risk to efforts aimed at preventing future outbreaks. If the U.S. were to experience another pandemic under his leadership, Kennedy’s approach to vaccines could undermine the country’s ability to respond effectively, endangering millions of lives.

A Silver Lining: Food Reform and Child Nutrition

While Kennedy’s anti-vaccine rhetoric remains a cause for concern, his stance on food policy, particularly regarding the food served in schools, offers a more promising avenue for public health reform. Kennedy has been a vocal critic of the processed food industry, particularly its influence on school lunches. He has argued that the widespread consumption of unhealthy, highly processed foods is a key factor driving the obesity and chronic disease epidemics in the United States, particularly among children.

The connection between poor nutrition and health outcomes is well-established. Diets high in processed foods, sugars, and unhealthy fats contribute to a range of health issues, from obesity and diabetes to heart disease and hypertension. The alarming rise in childhood obesity rates has prompted calls for more stringent regulations around the food products served in schools, where many children receive a significant portion of their daily calories. Kennedy’s push for healthier school meals, free from processed foods and filled with nutritious alternatives, is a policy that aligns with the recommendations of many nutrition experts.

Kennedy’s calls for food reform could provide a much-needed counterbalance to the harmful influence of corporate interests in the food industry

While his anti-vaccine views may overshadow his other positions, Kennedy’s stance on food reform is one that could benefit the health of future generations. Improving the quality of food served to schoolchildren would not only help combat rising rates of childhood obesity but could also reduce the long-term burden of chronic diseases, ultimately easing the strain on the nation’s healthcare system.

A Complex Legacy and Uncertain Future

The nomination of Robert F. Kennedy Jr. to head HHS is emblematic of the broader tensions within the Trump administration, which has frequently positioned itself against the scientific establishment. Kennedy’s promotion, alongside other controversial picks, suggests a continuation of the president’s desire to reshape key federal agencies in line with his ideological and political views, often at odds with established science and public health expertise.

However, Kennedy’s anti-establishment persona also resonates with a segment of the American public that feels disconnected from traditional political elites and the institutions that govern public health. His views on vaccines may appeal to those who distrust government-mandated health policies, even if those policies are grounded in extensive scientific research.

At the same time, Kennedy’s calls for food reform could provide a much-needed counterbalance to the harmful influence of corporate interests in the food industry. If he were to focus on improving the nutritional standards of school meals and advocating for greater transparency in food labeling, he could help shift the national conversation toward healthier diets and better public health outcomes.

A Balancing Act for Public Health

As Robert F. Kennedy Jr. takes on the responsibility of leading the U.S. Department of Health and Human Services, the country faces a complex and uncertain future. While his stance on vaccines raises significant concerns, his advocacy for healthier food policies could offer valuable solutions to the growing public health crisis of diet-related diseases. In navigating his dual legacy of promoting vaccine skepticism and championing food reform, Kennedy will need to balance his controversial views with the scientific evidence that underpins public health policy.

The true test of his leadership will be whether he can embrace evidence-based health practices while addressing the pressing challenges of childhood nutrition, chronic disease prevention, and the fight against harmful food industries. If Kennedy can move beyond his anti-vaccine stance and focus on fostering a healthier, more informed public, his tenure at HHS could ultimately benefit the health and well-being of Americans—especially the nation’s children, who will inherit the public health policies of today.

Continue Reading

Trending