Features
Recent earth tremors around Victoria dam – a scientific explanation in relation to the tectonic history of Sri Lanka
By Dulip Jayawardena
(Retired Economic Affairs Officer United Nations ESCAP 1990 to 2003 Former Director Geological Survey Department- Present GSMB (1983-1986)
Earth tremors were reported in the print and electronic media on 29 August and also 2 September 2020 in an area surrounding the Victoria dam in Kandy. The Geological Survey and Mines Bureau (GSMB) the designated Agency to monitor such earth tremors have mobilized geologists to investigate the damages caused by such earth movements.
The Director General of the GSMB announced that there had been no records of such tremors in the Pallekelle seismic monitoring station which is close to the areas affected. However, a senior Director who is a geologist gave a different version and reported that tremors were detected at the monitoring station.
The reporting of earth tremors and earthquakes are on the Richter scale, which has been revised many times. According to this scale unit 1 records a micro tremor not felt or felt rarely and the frequency of occurrence worldwide is several million per year. The scale 2 -2.9 is felt slightly by some people and damage to buildings and the worldwide frequency per year is over 1 million. The magnitude 3 to 3.9 is a minor tremor often felt by people but very rarely causes damage. Shaking of indoor objects can be noticed. The frequency is over 100,000 per year. The magnitude 4.0 -4.9 is noticeable with the shaking of indoor objects and ratting noises and felt by most people in the affected area and slightly felt outside and generally causes minimal damage. Moderate to significant damage very unlikely. Some objects may fall off shelves or be knocked over and the frequency worldwide is 10,000 15 000 per year.
Tectonic evolution of Sri Lanka theories of three peneplains and upliftment and plate tectonics
The earlier theory of the three peneplains was proposed by Wadia in the late 1948 when he was the Director of the Mineralogy Department. His theory was based on the ring of waterfalls around the country that were caused by erosion of the rocks to the upper plain mid plain and the lower plain.
However, in 1974 after a gravity survey was conducted by the Geological Survey Department (Present GSMB ) covering the entire island and it was conclusively proved that the there was an upliftment of the Precambrian terrain composed of over 80 per cent of the land area which had earlier being recognized as the Highland and Vijayan Series.
The Gravity Map of Sri Lanka on the scale of 1:100000 was published with an explanation as Professional Paper No 3 with T Hatherton, D. B. Pattiarachchi and V. V. C. Ranasinghe. This was possible with technical cooperation by the Government of New Zealand under the Colombo Plan.
During the gravity survey, earlier trigonometrical stations established by the Survey Department on the triangular survey for the topographical maps were reopened. It was then noticed that some bench marks for these stations were uplifted especially in the hill country of the island.
The most significant revelation was a significant gravity low continuously identified between the eastern boundary of the Highland and Vijayan series rocks. This led to the theory of plate tectonics where the Vijayan series sank below the Highland series forming a convergent plate boundary.
The evidence for such activity can be seen in the change of course of the Mahaweli river from a direction of north east to north as indicated by some Buddhist shrines such as Somawathi and Deegawapi which were earlier on the banks of this river.
Earth tremors are noted frequently along this fault line and geologists together with geophysicists should constantly monitor such movements.
A new tectonic plate boundary between
Australia and India
Many researchers have carried out extensive studies on the development of a new tectonic plate boundary in the Indian Ocean which occurred over 40 million years ago. This boundary that runs east west is about 400-500 kms south of Sri Lanka. If this boundary is activated it will have devastating effects to the infrastructure south of Sri Lanka such as the Hambantota Port, Mattala Airport and industrial zones envisaged in the area.
Danger to Victoria concrete arch
dam from earth tremors
Victoria dam is the largest concrete dam in Sri Lanka built under the Mahaweli Project costing Rs 9.8 billion during 1980-1984 to solve problems as hydropower for the country diversion of water for agriculture, solving unemployment, encouraging inland fisheries and flood control.
“Victoria Dam is a double curvature (cupola) arch dam of 122 meters maximum height and 520 meters crest length. The arch dam is constructed with the individual crown cantilevers. A large amount of water load acting on the upstream surface of the dam is transferred to the abutment by arch action and a certain amount of water load is transferred to the foundation by cantilever action. The destruction of the Victoria dam can cause flooding up to Trincomalee affecting the livelihood of the area .crack was identified and it has been developing in the downstream face of the Victoria dam (Sri Lanka Head works Division of Mahaweli Authority 2014)Therefore the Victoria Dam is investigated to identify the effect of earthquake ” (Ref Assessment of Concrete Arch dam under Possible Earthquake Loading in Sri Lanka Case Study on Victoria Dam by Shobitha Tharamarajah and Kamal Karunananda International Journal of Scientific and Engineering Research Volume 8 Issue 10 October 2017 ISSN 2229-5518)”
Another article titled “Comprehensive monitoring of Victoria Dam /Civil + Structural Engineer magazine <https://csengineermag.com/comprehensive-monitoring-of- victor…. > should also be studied.
All interested parties should access these excellent articles as it covers all aspects of strengthening the Victoria dam to avoid any major catastrophe.
Reservoir induced earthquakes –application to arch and gravity dams in Sri Lanka
As stated above, the only large concrete arch dam in Sri Lanka is the Victoria dam, which was built mainly for the supply of hydroelectricity. Another concrete arch dam is Canyon producing hydroelectricity.
Apart from the Victoria dam there are dams built for irrigation and hydroelectricity throughout Sri Lanka which are gravity concrete dams. There are also embankment dams constructed mainly for irrigation.
The gravity dams constructed mainly for generation of hydroelectricity are at Bowatenna, Broadlands, Castlereigh Dyraaba, Kalu Ganga, Kotmale, Kukule Ganga,Laksapana, Maskeliya, Moragahakanda, Moragolla Norton ,Nilambe, Polgolla Puhulpola, Rantambe, and Upper Kotmale Ganga,
(Ref Dams and reservoirs of Sri lanka –Wikipedia< https://en.wikipedia.org/wiki/List_of _dams_and reservoirs_in _…)
It is asked whether the gravity dams constructed mainly in the hill country are being monitored for any tremors using the latest seismic equipment as at Victoria as reservoirs of these dams will also be subject to reservoir triggered seismicity giving rise to earth tremors or earthquakes.
It is also noted that most of the above reservoirs are located in areas with less inhabitants and the tremors will not be felt as at Victoria.
Dams in Sri Lanka are built on valleys that have formed by active erosion with recent theory of upliftment as indicated by the gravity survey covering the island. It is also known that under compressional tectonic force reverse or thrust faults produce upliftment giving rise to tremors
It is known that reservoir induced seismicity can also occur after a few years and will depend on the permeability of the rocks beneath the reservoir.
It is also noted that indused earthquakes at reservoirs experience delayed triggering at depths of 10 to 20 kilometers. Such earthquakes may occur 10 to twenty years after filling the reservoir. In this regard it is noted that the Victoria reservoir was filled in 1985 which is 35 years ago.
Further the other gravity dams also should be subject to regular monitoring for any tremors due to reservoir triggered seismicity. However, it is not easy to predict reservoir induced seismicity due to the state of stress and the rock strength at earthquake depths are not subject to direct measurement.
Ref : Dams and earthquakes –Seismology Research Centre
(https://www.src.com.au/earthquakes/seismology-101/dams-eart .. )
Recommendations
In the above article I have attempted to explain the recent earth tremors experienced in the valley surrounding the Victoria Dam as well as the high ground which occupied by villagers. These tremors were felt on two occasions and the GSMB has mobilized a number of geologists to investigate what damages have been caused to the dwellings etc. A retired Professor of Geology of the Peradeniya University has attributed the tremors to the extensive quarrying operations carried out for limestone in an area above the Victoria dam.
The GSMB is also investigating the triggering of these tremors due to the Victoria reservoir indused seismicity which I have also dealt above.
With my past experience as a geologist who mapped the area in the late 1970s there are many fold belts with prominent fault zones that could be activated with gradual upliftment of the terrain as proved by the gravity survey conducted in 1975.
It is important to monitor the other gravity dams I have listed as with age of these dams the pore pressure will increase at depths to kilometers beneath the reservoir.
I urge the government to appoint a multidisciplinary team of experts comprising of geologists , geophysicists, hydrologists, civil engineers and those from the NBRO as well as the universities to study the state of the Victoria dam as well as other gravity dams and recommend an effective method of monitoring such tremors.
I had been involved in advising the late Dr A. N. S. Kulasinghe on the problems involved in the construction of the Upper Kothmale gravity dam in a landslide prone area. However it is now opportune to monitor any seismicity and take remediable measures.
As revealed above the Victoria dam developed a crack on the downstream part in 2014 and is important that constant monitoring should be carried out .
I was also involved in following up the construction of the Victoria dam in early 1980 when the then Professor of Geology of the Peradeniya University revealed that a major fault zone runs along the axis of the dam. However, the consultant engineers responded that the Victoria dam was designed to take a wave crest of 10 meters over the dam and there is no danger to its stability.
I hope this article will be helpful to the experts to draw up a comprehensive long term plan to monitor our gravity dams that mainly generate hydroelectricity as well provide water for irrigation.
Last but not least the effects of climate change on these reservoirs and the surrounding areas should not be ignored .
(The author can be reached at fasttrack@eol.lk )
Features
Digital transformation in the Global South
Understanding Sri Lanka through the India AI Impact Summit 2026
Artificial Intelligence (AI) has rapidly moved from being a specialised technological field into a major social force that shapes economies, cultures, governance, and everyday human life. The India AI Impact Summit 2026, held in New Delhi, symbolised a significant moment for the Global South, especially South Asia, because it demonstrated that artificial intelligence is no longer limited to advanced Western economies but can also become a development tool for emerging societies. The summit gathered governments, researchers, technology companies, and international organisations to discuss how AI can support social welfare, public services, and economic growth. Its central message was that artificial intelligence should be human centred and socially useful. Instead of focusing only on powerful computing systems, the summit emphasised affordable technologies, open collaboration, and ethical responsibility so that ordinary citizens can benefit from digital transformation. For South Asia, where large populations live in rural areas and resources are unevenly distributed, this idea is particularly important.
People friendly AI
One of the most important concepts promoted at the summit was the idea of “people friendly AI.” This means that artificial intelligence should be accessible, understandable, and helpful in daily activities. In South Asia, language diversity and economic inequality often prevent people from using advanced technology. Therefore, systems designed for local languages, and smartphones, play a crucial role. When a farmer can speak to a digital assistant in Sinhala, Tamil, or Hindi and receive advice about weather patterns or crop diseases, technology becomes practical rather than distant. Similarly, voice based interfaces allow elderly people and individuals with limited literacy to use digital services. Affordable mobile based AI tools reduce the digital divide between urban and rural populations. As a result, artificial intelligence stops being an elite instrument and becomes a social assistant that supports ordinary life.
Transformation in education sector
The influence of this transformation is visible in education. AI based learning platforms can analyse student performance and provide personalised lessons. Instead of all students following the same pace, weaker learners receive additional practice while advanced learners explore deeper material. Teachers are able to focus on mentoring and explanation rather than repetitive instruction. In many South Asian societies, including Sri Lanka, education has long depended on memorisation and private tuition classes. AI tutoring systems could reduce educational inequality by giving rural students access to learning resources, similar to those available in cities. A student who struggles with mathematics, for example, can practice step by step exercises automatically generated according to individual mistakes. This reduces pressure, improves confidence, and gradually changes the educational culture from rote learning toward understanding and problem solving.
Healthcare is another area where AI is becoming people friendly. Many rural communities face shortages of doctors and medical facilities. AI-assisted diagnostic tools can analyse symptoms, or medical images, and provide early warnings about diseases. Patients can receive preliminary advice through mobile applications, which helps them decide whether hospital visits are necessary. This reduces overcrowding in hospitals and saves travel costs. Public health authorities can also analyse large datasets to monitor disease outbreaks and allocate resources efficiently. In this way, artificial intelligence supports not only individual patients but also the entire health system.
Agriculture, which remains a primary livelihood for millions in South Asia, is also undergoing transformation. Farmers traditionally rely on seasonal experience, but climate change has made weather patterns unpredictable. AI systems that analyse rainfall data, soil conditions, and satellite images can predict crop performance and recommend irrigation schedules. Early detection of plant diseases prevents large-scale crop losses. For a small farmer, accurate information can mean the difference between profit and debt. Thus, AI directly influences economic stability at the household level.
Employment and communication reshaped
Artificial intelligence is also reshaping employment and communication. Routine clerical and repetitive tasks are increasingly automated, while demand grows for digital skills, such as data management, programming, and online services. Many young people in South Asia are beginning to participate in remote work, freelancing, and digital entrepreneurship. AI translation tools allow communication across languages, enabling businesses to reach international customers. Knowledge becomes more accessible because information can be summarised, translated, and explained instantly. This leads to a broader sociological shift: authority moves from tradition and hierarchy toward information and analytical reasoning. Individuals rely more on data when making decisions about education, finance, and career planning.
Impact on Sri Lanka
The impact on Sri Lanka is especially significant because the country shares many social and economic conditions with India and often adopts regional technological innovations. Sri Lanka has already begun integrating artificial intelligence into education, agriculture, and public administration. In schools and universities, AI learning tools may reduce the heavy dependence on private tuition and help students in rural districts receive equal academic support. In agriculture, predictive analytics can help farmers manage climate variability, improving productivity and food security. In public administration, digital systems can speed up document processing, licensing, and public service delivery. Smart transportation systems may reduce congestion in urban areas, saving time and fuel.
Economic opportunities are also expanding. Sri Lanka’s service based economy and IT outsourcing sector can benefit from increased global demand for digital skills. AI-assisted software development, data annotation, and online service platforms can create new employment pathways, especially for educated youth. Small and medium entrepreneurs can use AI tools to design products, manage finances, and market services internationally at low cost. In tourism, personalised digital assistants and recommendation systems can improve visitor experiences and help small businesses connect with travellers directly.
Digital inequality
However, the integration of artificial intelligence also raises serious concerns. Digital inequality may widen if only educated urban populations gain access to technological skills. Some routine jobs may disappear, requiring workers to retrain. There are also risks of misinformation, surveillance, and misuse of personal data. Ethical regulation and transparency are, therefore, essential. Governments must develop policies that protect privacy, ensure accountability, and encourage responsible innovation. Public awareness and digital literacy programmes are necessary so that citizens understand both the benefits and limitations of AI systems.
Beyond economics and services, AI is gradually influencing social relationships and cultural patterns. South Asian societies have traditionally relied on hierarchy and personal authority, but data-driven decision making changes this structure. Agricultural planning may depend on predictive models rather than ancestral practice, and educational evaluation may rely on learning analytics instead of examination rankings alone. This does not eliminate human judgment, but it alters its basis. Societies increasingly value analytical thinking, creativity, and adaptability. Educational systems must, therefore, move beyond memorisation toward critical thinking and interdisciplinary learning.
AI contribution to national development
In Sri Lanka, these changes may contribute to national development if implemented carefully. AI-supported financial monitoring can improve transparency and reduce corruption. Smart infrastructure systems can help manage transportation and urban planning. Communication technologies can support interaction among Sinhala, Tamil, and English speakers, promoting social inclusion in a multilingual society. Assistive technologies can improve accessibility for persons with disabilities, enabling broader participation in education and employment. These developments show that artificial intelligence is not merely a technological innovation but a social instrument capable of strengthening equality when guided by ethical policy.
Symbolic shift
Ultimately, the India AI Impact Summit 2026 represents a symbolic shift in the global technological landscape. It indicates that developing nations are beginning to shape the future of artificial intelligence according to their own social needs rather than passively importing technology. For South Asia and Sri Lanka, the challenge is not whether AI will arrive but how it will be used. If education systems prepare citizens, if governments establish responsible regulations, and if access remains inclusive, AI can become a partner in development rather than a source of inequality. The future will likely involve close collaboration between humans and intelligent systems, where machines assist decision making while human values guide outcomes. In this sense, artificial intelligence does not replace human society, but transforms it, offering Sri Lanka an opportunity to build a more knowledge based, efficient, and equitable social order in the decades ahead.
by Milinda Mayadunna
Features
Governance cannot be a postscript to economics
The visit by IMF Managing Director Kristalina Georgieva to Sri Lanka was widely described as a success for the government. She was fulsome in her praise of the country and its developmental potential. The grounds for this success and collaborative spirit go back to the inception of the agreement signed in March 2023 in the aftermath of Sri Lanka’s declaration of international bankruptcy. The IMF came in to fulfil its role as lender of last resort. The government of the day bit the bullet. It imposed unpopular policies on the people, most notably significant tax increases. At a moment when the country had run out of foreign exchange, defaulted on its debt, and faced shortages of fuel, medicine and food, the IMF programme restored a measure of confidence both within the country and internationally.
Since 1965 Sri Lanka has entered into agreements with the IMF on 16 occasions none of which were taken to their full term. The present agreement is the 17th agreement . IMF agreements have traditionally been focused on economic restructuring. Invariably the terms of agreement have been harsh on the people, with priority being given to ensure the debtor country pays its loans back to the IMF. Fiscal consolidation, tax increases, subsidy reductions and structural reforms have been the recurring features. The social and political costs have often been high. Governments have lost popularity and sometimes fallen before programmes were completed. The IMF has learned from experience across the world that macroeconomic reform without social protection can generate backlash, instability and policy reversals.
The experience of countries such as Greece, Ireland and Portugal in dealing with the IMF during the eurozone crisis demonstrated the political and social costs of austerity, even though those economies later stabilised and returned to growth. The evolution of IMF policies has ensured that there are two special features in the present agreement. The first is that the IMF has included a safety net of social welfare spending to mitigate the impact of the austerity measures on the poorest sections of the population. No country can hope to grow at 7 or 8 percent per annum when a third of its people are struggling to survive. Poverty alleviation measures in the Aswesuma programme, developed with the agreement of the IMF, are key to mitigating the worst impacts of the rising cost of living and limited opportunities for employment.
Governance Included
The second important feature of the IMF agreement is the inclusion of governance criteria to be implemented alongside the economic reforms. It goes to the heart of why Sri Lanka has had to return to the IMF repeatedly. Economic mismanagement did not take place in a vacuum. It was enabled by weak institutions, politicised decision making, non-transparent procurement, and the erosion of checks and balances. In its economic reform process, the IMF has included an assessment of governance related issues to accompany the economic restructuring process. At the top of this list is tackling the problem of corruption by means of publicising contracts, ensuring open solicitation of tenders, and strengthening financial accountability mechanisms.
The IMF also encouraged a civil society diagnostic study and engaged with civil society organisations regularly. The civil society analysis of governance issues which was promoted by Verite Research and facilitated by Transparency International was wider in scope than those identified in the IMF’s own diagnostic. It pointed to systemic weaknesses that go beyond narrow fiscal concerns. The civil society diagnostic study included issues of social justice such as the inequitable impact of targeting EPF and ETF funds of workers for restructuring and the need to repeal abuse prone laws such as the Prevention of Terrorism Act and the Online Safety Act. When workers see their retirement savings restructured without adequate consultation, confidence in policy making erodes. When laws are perceived to be instruments of arbitrary power, social cohesion weakens.
During a meeting between the IMF Managing Director Georgeiva and civil society members last week, there was discussion on the implementation of those governance measures in which she spoke in a manner that was not alien to the civil society representatives. Significantly, the civil society diagnostic report also referred to the ethnic conflict and the breakdown of interethnic relations that led to three decades of deadly war, causing severe economic losses to the country. This was also discussed at the meeting. Governance is not only about accounting standards and procurement rules. It is about social justice, equality before the law, and political representation. On this issue the government has more to do. Ethnic and religious minorities find themselves inadequately represented in high level government committees. The provincial council system that ensured ethnic and minority representation at the provincial level continues to be in abeyance.
Beyond IMF
The significance of addressing governance issues is not only relevant to the IMF agreement. It is also important in accessing tariff concessions from the European Union. The GSP Plus tariff concession given by the EU enables Sri Lankan exports to be sold at lower prices and win markets in Europe. For an export dependent economy, this is critical. Loss of such concessions would directly affect employment in key sectors such as apparel. The government needs to address longstanding EU concerns about the protection of human rights and labour rights in the country. The EU has, for several years, linked the continuation of GSP Plus to compliance with international conventions. This includes the condition that the Prevention of Terrorism Act (PTA) be brought into line with international standards. The government’s alternative in the form of the draft Protection of the State from Terrorism Act (PTSA) is less abusive on paper but is wider in scope and retains the core features of the PTA.
Governance and social justice factors cannot be ignored or downplayed in the pursuit of economic development. If Sri Lanka is to break out of its cycle of crisis and bailout, it must internalise the fact that good governance which promotes social justice and more fairly distributes the costs and fruits of development is the foundation on which durable economic growth is built. Without it, stabilisation will remain fragile, poverty will remain high, and the promise of 7 to 8 percent growth will remain elusive. The implementation of governance reforms will also have a positive effect through the creative mechanism of governance linked bonds, an innovation of the present IMF agreement.
The Sri Lankan think tank Verité Research played an important role in the development of governance linked bonds. They reduce the rate of interest payable by the government on outstanding debt on the basis that better governance leads to a reduction in risk for those who have lent their money to Sri Lanka. This is a direct financial reward for governance reform. The present IMF programme offers an opportunity not only to stabilise the economy but to strengthen the institutions that underpin it. That opportunity needs to be taken. Without it, the country cannot attract investment, expand exports and move towards shared prosperity and to a 7-8 percent growth rate that can lift the country out of its debt trap.
by Jehan Perera
Features
MISTER Band … in the spotlight
It’s a good sign, indeed, for the local scene, to see artistes, who have not been very much in the limelight, now making their presence felt, in a big way, and I’m glad to give them the publicity they deserve.
On 10th February we had Yellow Beatz in the spotlight and this week it’s MISTER Band.
This outfit is certainly not new to our scene; they have been around since 2012, under the leadership of Sithum Waidyarathne.
The seven energetic members who make up MISTER Band are:
Sithum Waidyarathne (leader/founder/saxophonist/guitarist and vocalist), Rangana Seram (bass guitarist), Vihanga Liyanage (vocalist), Ridmi Dissanayake (female vocalist), Nuwan Cristo (keyboardist/vocalist), Kasun Thennakoon (lead guitarist), and Nuwan Madushanka (drummer).
According to Sithum, their vision is to provide high quality entertainmen to those who engage their services.
“Thanks to our engaging performances and growing popularity, MISTER Band continues to be in high demand … at weddings, corporate events and dinner dances,” said Sithum.
They predominantly cover English and Sinhala music, as well as the most popular genres.
And the reviews that come their way, after a performance, are excellent, they say, and this is one of the bouquets they received:
It was a pleasure to have you at our wedding. Being avid music fans we wanted the best music, not just a big named band, and you guys acceded that expectations. Big thanks to Sithum for being very supportive, attentive and generous.
- Sithum Waidyarathne: Band leader and founder
- Ridmi Dissanayake: MISTER Band’s female vocalist
The best thing is the post feedback from all the guests. Normally we get mixed reviews but the whole crowd was impressed by you.
MISTER Band was one of our best choices for our wedding.
What is interesting is that for the past four consecutive years, this outfit has performed overseas, during New Year’s Eve, thereby taking their music to the international stage, as well.
The band has also produced a collection of original songs, with around six original tracks composed by the band leader, Sithum Waidyarathne, including ‘Suraganak Dutuwa,’ ‘Landuni,’ ‘Dili Dili Payana,’ ‘Hada Wedana,’ and ‘Nil Kandu Athare.’
Two more songs are set to be released this month: ‘Hitha Norida’ and ‘Premaye Hanguman.’
In addition to their original music, they have also created a strong online presence by performing and uploading over 50 cover songs and medleys to YouTube.
“We’re now planning to connect with an even wider audience by releasing more cover content very soon,” said Sithum, adding that they are also very active on social media, under the name Mister Band Official – on Facebook, Instagram, YouTube, and TikTok.
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