News

Lanka’s southern waters hide a gravity anomaly that baffles scientists

Published

2 years ago

2024/11/12

The Earth beneath your feet is far from still. While we understand quite a bit about the Earth’s surface, the interior remains a mystery. (CREDIT: International Centre for Global Earth Models / Wikimedia, CC BY 4.0)

One of the most puzzling phenomena lies beneath the Indian Ocean, south of Sri Lanka, where a massive gravity anomaly known as the Indian Ocean Geoid Low (IOGL) has confounded researchers for decades, said a report published by The Brighter Side News.

It said that this anomaly, marked by a dramatic 106-meter drop in the ocean’s surface, is the lowest geoid anomaly on Earth. Its origin remains a mystery, making it one of the most intriguing unresolved problems in Earth sciences. “The existence of the Indian Ocean Geoid Low is one of the most outstanding problems in Earth Sciences,” says Prof. Attreyee Ghosh, an assistant professor at the Centre for Earth Sciences, Indian Institute of Science, Bangalore.

It said: The ground beneath you may seem stable, but the Earth is in a state of constant motion. While we have a solid understanding of the Earth’s surface, its interior remains largely unexplored. Even with all our technological advancements, we still haven’t developed probes capable of reaching the Earth’s crust, which is just 35 kilometers deep. To uncover the mysteries of the Earth’s core and mantle, we rely on indirect methods.

Though the Earth may look like a perfect blue sphere from space, it’s actually more like a lumpy, misshapen potato. This uneven shape is due to the non-uniform distribution of matter inside the planet, which creates variations in gravity. The movement of tectonic plates, which form mountains and valleys, also contributes to these deformations.

Oceans cover 71% of the Earth’s surface, so these irregularities also affect the shape of the ocean. Without tides and currents, the ocean water would settle into a smooth, wave-like form called a geoid. This geoid rises in areas where gravity is strong and sinks where gravity is weak. These variations in the ocean’s surface, known as “geoid anomalies,” are caused by the distribution of mass deep within the Earth.

One of the most intriguing geoid anomalies is located south of Sri Lanka. Known as the Indian Ocean Geoid Low (IOGL), this massive area is characterized by a significant drop in gravity, causing the ocean surface to dip 106 meters. This “gravity hole” has puzzled scientists for decades.

In a recent study published in Geophysical Research Letters, Prof. Ghosh and her colleagues, along with researchers from the GFZ German Research Centre for Geosciences, investigated the missing mass causing the geoid low.

Past studies attributed it to a remnant of an ancient plate that dived into the mantle beneath another plate millions of years ago, but there had been no convincing explanation until now.

Using numerical models of mantle convection, the researchers explained the mass deficit. Mantle convection involves movement within the Earth’s mantle, where hotter, lighter material rises, and cooler, denser material sinks due to gravity. This movement was driven by seismic tomography models, which use seismic waves to create a 3-dimensional picture of the Earth’s interior.

The researchers discovered that ‘low-density anomalies’—the presence of lighter materials in the upper to mid-mantle beneath the IOGL—caused the gravity low in this region. Mantle plumes, or rising abnormally hot rock, can result in low-density anomalies.

However, no known mantle plume exists beneath the IOGL. Instead, they found hot material rising from the African large low-shear-velocity province (LLSVP) or the African superplume, near the IOGL, which gets deflected eastward and terminates beneath the IOGL. The deflection is possibly due to the fast motion of the Indian plate.

The researchers used supercomputers to simulate how the area could have formed, going as far back as 140 million years. “The Earth is basically a lumpy potato,” said Ghosh. “Technically, it’s not a sphere, but what we call an ellipsoid, because as the planet rotates, the middle part bulges outward.”

To find a potential answer, Ghosh and her colleagues used computer models to set the clock back 140 million years in order to see the big picture, geologically. “We have some information and some confidence about what the Earth looked like back then,” she said. “The continents and the oceans were in very different places, and the density structure was also very different.”

From that starting point, the team ran 19 simulations up to the present day, recreating the shifting of tectonic plates and the behaviour of magma inside the mantle. In six scenarios, a geoid low similar to the one in the Indian Ocean formed. The distinguishing factor in all six models was the presence of plumes of magma around the geoid low, believed to be responsible for the formation of the “gravity hole.”

The plumes themselves originated from the disappearance of an ancient ocean as India’s landmass drifted and eventually collided with Asia tens of millions of years ago. “India was in a very different place 140 million years ago, and there was an ocean between the Indian plate and Asia. India started moving north and as it did, the ocean disappeared, and the gap with Asia closed,” Ghosh explained.

As the oceanic plate went down inside the mantle, it could have spurred the formation of the plumes, bringing low-density material closer to Earth’s surface.

“A geoid low or a negative geoid anomaly would be caused by a mass deficit within the deep mantle. Our study explains this low with hotter, lighter material stretching from a depth of 300 km up to ~900 km in the northern Indian Ocean, most likely stemming from the African superplume,” says Prof. Ghosh.

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News

Plans to open underutilised state land for new investment opportunities

Published

16 hours ago

2026/06/17

Priyan

A discussion between President Anura Kumara Dissanayake and the Circular Revision Committee appointed to review and update circulars issued under the State Lands Ordinance and the Land Development Ordinance was held on Tuesday (16) afternoon at the Presidential Secretariat. The Committee has been mandated to recommend to the Cabinet the cancellation of out-dated circulars, the issuance of new circulars, and the revision of existing circulars to ensure alignment with current requirements.

The Committee is chaired by the Secretary to the Ministry of Agriculture, Livestock, Lands and Irrigation, D.P. Wickramasinghe. Its other members include the Senior Additional Secretary to the President (Constitutional and Statutory Affairs Division), Legal Adviser to the Presidential Secretariat, an Additional Solicitor General from the Attorney General’s Department, the Additional Secretary (Lands) of the Ministry of Agriculture, Livestock, Lands and Irrigation, the Additional Director General of the National Budget Department, the Western Province Land Commissioner, the Divisional Secretary of Nuwaragampalatha East, the Deputy Chief Valuer of the Valuation Department and the Director (Lands) of the Mahaweli Authority.

The Commissioner General of Lands serves as the Convener of the Committee.

The Committee’s responsibilities include establishing a reliable, uniform and regularised system of land taxation within the existing legal framework, ensuring state revenue optimisation without prejudice to lessees. This includes reviewing annual lease rentals charged on long-term leases and grants, aligning related circulars with current requirements, and amending or formulating new provisions and directives where necessary.

During the meeting, detailed discussions were held on the proposals submitted by the expert committee in relation to the revision of these circulars.

The President emphasised that a new, time-appropriate policy should be formulated to address the underutilisation of State lands and to ensure their more efficient use.

Deputy Minister of Lands and Irrigation Aravinda Senarath, Secretary to the President Dr. Nandika Sanath Kumanayake, Legal Adviser to the President, Senior Attorney-at-Law J.M. Wijebandara, Secretary to the Ministry of Agriculture, Livestock, Lands and Irrigation D.P. Wickramasinghe, Additional Solicitor General of the Attorney General’s Department, President’s Counsel Ravindra Pathiranage, Commissioner General of Lands Chandana Ranaweraarachchi, Director General (Institutional Affairs), Ministry of Finance, Planning and Economic Development J.G.L.S. Jayawardena, Additional Director General (National Budget Department) D.A. Asantha Gunasekara, and Commissioner of Lands (Leasing Division) P.K.C. Nilani Mahindaganamage, together with members of the Committee, were also present.

Senior officials from the Ministry of Finance and the Ministry of Agriculture, Livestock, Lands and Irrigation also attended the meeting.

(PMD)

Business

National Export Development Plan (2026–2030) presented to the President

Published

16 hours ago

2026/06/17

Priyan

Marking an important milestone in Sri Lanka’s economic development, the National Export Development Plan (NEDP) for the period 2026–2030 was presented to President Anura Kumara Dissanayake on Tuesday morning (16) at the Presidential Secretariat.

The 2026–2030 National Export Development Plan (NEDP) is a key national programme formulated in line with the Government’s policy direction under the 2025 Budget. It aims to strengthen the country’s export sector and achieve export-led sustainable economic growth.

The strategic plan has been developed under the guidance of the Ministry of Industry and Entrepreneurship Development and the leadership of the Sri Lanka Export Development Board (EDB), with technical assistance provided through the Asian Development Bank’s (ADB) Policy-Based Lending (PBL) programme. It is the result of an extensive consultative process carried out in close collaboration with key government institutions, private sector stakeholders, and development partners.

The proposal submitted by the Minister of Industry and Entrepreneurship Development to recognise the “Sri Lanka National Export Development Plan 2026–2030” as the official strategic framework for export development and promotion in Sri Lanka was approved by the Cabinet of Ministers on 4 May 2026. The Plan reflects a broad consensus among government institutions, private sector experts, and international development partners.

In line with the national vision of “A Thriving Nation – A Beautiful Life”, the Plan has been formulated to enhance Sri Lanka’s export competitiveness and achieve an export revenue target of USD 36 billion by 2030.

The core vision of the Plan is to transform Sri Lanka into a competitive logistics and knowledge-based export hub serving regional and global markets. The strategy is based on two key interconnected pillars: “horizontals” and “verticals”, which together provide the foundation for strengthening export competitiveness, diversification, and sustainable growth.

The horizontal enablers, which support the growth and expansion of all priority sectors, include logistics and integrated hub operations, trade facilitation, trade finance and reforms in the business and investment environment, trade promotion and market linkages, quality management, standards, environmental, social and governance (ESG) capacity development, as well as entrepreneurship and innovation.

The Plan also identifies eight priority export sectors to enhance export diversification and value addition, and to position Sri Lanka more competitively in global markets. These include automotive components, mineral-based industries, rubber-based industries, maritime industries (including boat and shipbuilding), spices and concentrates, digital products and services, electrical and electronic equipment, and processed food and beverages.

The preparation of the Plan involved contributions from over 300 stakeholders, including government institutions, the private sector, civil society organisations and international development partners. Broad consensus was achieved through consultations held from October to December 2025 and workshops conducted in January 2026.

The Government expects that, with implementation supported by strong governance and monitoring framework, the Plan will elevate local products to international standards and ensure long-term economic stability and growth. It is further anticipated that the National Export Development Plan will serve as a key driver of Sri Lanka’s economic progress in the years ahead.

Minister of Labour and Deputy Minister of Finance and Planning Dr. Anil Jayantha Fernando, Minister of Industry and Entrepreneurship Development Sunil Handunnetti, Senior Additional Secretary to the President and Secretary to the Ministry of Energy Russell Aponso, Secretary to the Ministry of Industry and Entrepreneurship Development Thilaka Jayasundara, and Chairman of the Sri Lanka Export Development Board Mangala Wijesinghe were also present at the event.

[PMD]

News

Complaint of custodial deaths and torture submitted to UN

Published

19 hours ago

2026/06/17

Sahan Weerasooriya

Senaka and Aisha

The Committee for Protecting Rights of Prisoners (CPRP) has complained to the UN regarding custodial deaths.

Executive Director of the Committee, Attorney-at-Law Senaka Perera told The Island that they had submitted written submissions to the visiting UN Subcommittee on Prevention of Torture (SPT) on Monday (15). “We are confident that they’ll take up the issues at hand with the government and take tangible measures to improve the conditions in prisons and detention facilities,” Perera said.

The SPT is here from 15 to 24 June. The visiting delegation consists of Aisha Shujune Muhammad, Head of Delegation (Maldives), Jakub Julian Czepek (Poland), Nika Kvaratskhelia (Georgia), Anica Tomsic (Croatia) and two human rights officers from the Office of the High Commissioner for Human Rights.

Claiming that there had been 184 prison deaths in 2024, the Committee asserted that though there was a drop in the number of cases, the deaths caused by underlying health complications and systemic issues weren’t available at the moment.

According to a copy of the submissions made to the SPT, received by The Island, there had been seven custodial deaths this year alone, reported from various parts of the country.

The Committee took a very critical position, while Foreign Minister Vijitha Herath assured the visiting delegation that the government didn’t tolerate torture at all.

The Ministry statement Monday night quoted Herath as having described the government response as zero tolerance policy.

The Committee for Protecting Rights of Prisoners also dealt with several other contentious issues, including special treatment granted to those with political connections and privileged backgrounds. Perera alleged that in spite of a change of government, in 2024 September, the much anticipated improvements failed to materialise and the continuing custodial deaths highlighted the crisis in the prisons and detention facilities.

According to the Committee, the situation was so bad and further deteriorating in overcrowded prisons, the national overcrowding rate has reached an unsustainable 286.6%, with some facilities, like the Vavuniya Remand Prison, exceeding capacity by 300%.

A significant portion of this population (65.4%) consists of persons not convicted awaiting trial, the Committee said, urging the SPT to look into the pathetic situation.

The Committee also complained of torture and ill-treatment at some detention facilities. There had been cases of lawyers, visiting detention centres at Welisara and Boossa, been subjected to degrading and humiliating searches, including forced removal of clothing.

The Committee also brought to the SPT’s notice how the Supreme Court, on 14 December, 2023, held the former Inspector General of Police (IGP), Deshabandu Thennakoon, personally responsible for torture. The failure on the part of prison authorities to grant inmates a fair hearing during internal investigations, too, has been raised by the Committee.

Among the other issues that had been raised were enforced disappearances, health and medical conditions, food, water and sanitation, corporal punishments and the operation of detention facilities within military bases.

Referring to the enforced disappearance of Gonapinuwala Kapila Kumara de Silva on 27 March, 2024, the Committee alleged that the Attorney General failed to take action against the perpetrators, believed to be members of the Special Task Force (STF)

The Committee alleged that in spite of them submitting formal complaints and an urgent letter to the Attorney General demanding prosecution under the International Convention for the Protection of All Persons from Enforced Disappearances Act, No. 5 of 2018, the AG took no meaningful action.

Consequently, CPRP filed a Writ of Mandamus petition in the Court of Appeal (CA/WRIT/185/26) against the Attorney General and other officials, seeking judicial intervention to compel investigation and prosecution. The case remains pending

by Shamindra Ferdinando