Recently, Mayon Volcano erupted, leading to the evacuation of thousands of people from areas south of Manila. The eruption raised concerns about volcanic hazards such as lava flows, ash emissions, and pyroclastic activity, prompting authorities to implement emergency measures to protect nearby communities.

Location and Geological Setting

Mayon Volcano is an active stratovolcano situated in Albay Province on Luzon Island in the Philippines. It is located within the Pacific Ring of Fire, a vast belt of intense volcanic and seismic activity that surrounds the Pacific Ocean.

The volcano lies near the Philippine Trench, a major subduction zone where the Philippine Sea Plate is being forced beneath the Philippine Mobile Belt. This tectonic interaction generates magma, making the region highly prone to volcanic eruptions and earthquakes.

Physical Features

Rising to an elevation of 2,462 metres above sea level, Mayon is recognized as the most active volcano in the Philippines. It is internationally famous for its nearly perfect cone shape and is often referred to as the “World’s Most Perfect Volcanic Cone.”

The volcano has a base circumference of approximately 130 kilometres and rises dramatically from the shores of Albay Gulf. Its steep slopes culminate in a small summit crater, giving it a remarkably symmetrical appearance. Because of its scenic beauty and geological significance, Mayon serves as the focal point of the Mayon Volcano Natural Park.

The fertile volcanic soils on its lower slopes support extensive abaca plantations, which are economically important for the local population.

Eruption History

Mayon Volcano has a long history of volcanic activity, with recorded eruptions dating back to 1616 CE. Since then, more than 30 eruptions have been documented.

Its eruptions have included Strombolian explosions, lava flows, pyroclastic flows, and mudflows (lahars). These phenomena make Mayon one of the most hazardous volcanoes in Southeast Asia.

The most devastating eruption occurred in 1814, when volcanic activity destroyed several towns and caused the deaths of more than 1,200 people. Another significant eruption took place in 1993, resulting in 79 fatalities.

Most eruptions originate from the volcano’s central conduit, and lava frequently flows far down its slopes, threatening settlements located around the volcano.

What is a Stratovolcano?

A stratovolcano, also known as a composite volcano, is a tall, steep-sided volcano formed by successive layers of lava, volcanic ash, and pyroclastic material. These layers accumulate over time, producing the characteristic conical shape associated with volcanoes such as Mayon.

Stratovolcanoes are generally found above subduction zones, where one tectonic plate descends beneath another. They constitute nearly 60 percent of the Earth's volcanoes and are especially common along the Pacific Ring of Fire.

Why are Stratovolcanoes Highly Explosive?

Stratovolcanoes usually erupt andesitic and dacitic magma, which are more viscous than basaltic magma. Because this thick magma traps gases within it, pressure gradually builds up beneath the volcano. When the pressure becomes too great, it is released violently, producing highly explosive eruptions.

Significance of Mayon Volcano

Mayon Volcano is not only a major geological landmark of the Philippines but also an important site for the study of volcanism and disaster management. Its location within the Pacific Ring of Fire, frequent eruptions, and exceptionally symmetrical cone make it one of the most famous volcanoes in the world. At the same time, its continued activity serves as a reminder of the powerful geological forces operating beneath the Earth's surface.

Recently, the National Stock Exchange of India (NSE) launched Electronic Gold Receipts (EGRs) as a new trading segment, providing investors with a transparent and regulated platform for trading gold in electronic form.

What are Electronic Gold Receipts (EGRs)?

Electronic Gold Receipts (EGRs) are dematerialised securities that represent ownership of physical gold. They allow investors to hold and trade gold electronically without the need to physically store the metal.

The gold corresponding to these receipts is stored in SEBI-regulated vaults, while the ownership is reflected in the investor’s demat account, similar to shares and exchange-traded funds (ETFs).

Each EGR is backed by an equivalent quantity of physical gold, ensuring authenticity, standardisation, and transparency in transactions.

Regulatory Framework

The EGR system operates under the regulations and guidelines of the Securities and Exchange Board of India.

To support this ecosystem, SEBI has introduced a new market intermediary known as the Vault Manager. A Vault Manager is a SEBI-registered entity responsible for providing secure vaulting services for the gold deposited for the creation of EGRs. These entities ensure the safety, quality verification, and proper storage of the underlying gold.

How Do Electronic Gold Receipts Work?

The process begins when physical gold is deposited in an accredited and SEBI-approved vault. After verification of purity and quantity, the deposited gold is converted into Electronic Gold Receipts.

These receipts are then credited to the depositor’s demat account and can be traded on stock exchanges just like other securities.

When an investor wishes to take possession of the gold, the EGRs can be surrendered and converted back into physical gold. This feature provides flexibility by allowing investors to switch between electronic and physical ownership whenever required.

Participants in the EGR Ecosystem

The EGR framework has been designed to accommodate a broad range of market participants.

It includes jewellers, who require gold for manufacturing ornaments; refiners, who process and standardise gold; traders, who facilitate market transactions; and both retail and institutional investors, who seek investment opportunities in gold.

Advantages of Electronic Gold Receipts

Electronic Gold Receipts eliminate concerns related to the physical storage and security of gold. Since the gold is held in regulated vaults, investors are assured of its quality and authenticity.

The system also promotes greater transparency in gold trading, enhances price discovery through exchange-based transactions, and reduces the risks associated with handling physical gold.

Furthermore, EGRs facilitate easier buying, selling, and transfer of gold while providing the option of physical delivery whenever needed.

Significance

India is one of the world's largest consumers of gold, and the introduction of EGRs is an important step towards creating a regulated, transparent, and efficient gold market. The initiative aims to integrate the physical gold market with the financial market, improve standardisation, and encourage formalisation of gold transactions.

Conclusion

Electronic Gold Receipts (EGRs) represent a significant innovation in India's gold market. By combining the security of physical gold with the convenience of electronic trading, EGRs provide investors with a reliable, transparent, and flexible mechanism for investing in gold while supporting the development of a well-regulated national gold exchange ecosystem.

Recently, the Asian Development Bank (ADB) announced a US$70 billion programme to expand energy and digital infrastructure across the Asia-Pacific region by 2035. The initiative aims to strengthen connectivity, improve energy access, accelerate digital transformation, and promote sustainable economic growth throughout the region.

About the Asian Development Bank

The Asian Development Bank (ADB) is a multilateral development bank established on 19 December 1966. It serves as the principal international development finance institution for the Asia-Pacific region.

The bank's vision is to create a prosperous, inclusive, resilient, and sustainable Asia and the Pacific, while continuing its efforts to eliminate extreme poverty in the region.

Membership in the ADB is open to both regional countries and non-regional developed countries that are members of the United Nations or any of its specialized agencies.

Currently, the ADB has 69 member countries, comprising 50 regional members and 19 non-regional members.

Its headquarters are located in Manila, the capital of the Philippines.

Governance Structure

Board of Governors

The Board of Governors is the highest policy-making body of the ADB. Each member country appoints one representative, usually the finance minister or a senior government official, to serve on the Board.

Board of Directors

The day-to-day operations of the bank are supervised by the Board of Directors, which consists of 12 directors. Of these, eight directors represent regional members, while four directors represent non-regional members.

President

The President of the ADB serves as the chief executive officer of the institution. The President chairs the Board of Directors and is responsible for managing the bank's overall operations and administration.

Voting System

The ADB follows a weighted voting system, under which the voting power of each member country is determined largely by its capital contribution to the bank. Consequently, countries contributing more capital possess greater voting influence.

Major Shareholders

The largest shareholders of the ADB are:

• Japan – 15.6%

• United States – 15.6%

• China – 6.4%

• India – 6.3%

• Australia – 5.8%

These countries play a significant role in shaping the institution's policies and strategic priorities.

Functions of the Asian Development Bank

Providing Loans and Grants

ADB provides loans, grants, and other financial assistance to member countries for projects related to infrastructure development, education, healthcare, poverty reduction, and environmental sustainability.

Technical Assistance

The bank offers technical assistance, policy advice, and institutional support to strengthen governance, improve public administration, and enhance development planning in member countries.

Promoting Regional Cooperation

ADB encourages regional cooperation and economic integration by financing cross-border infrastructure projects and promoting trade, investment, and connectivity among countries in the Asia-Pacific region.

Supporting the Private Sector

The bank actively supports private-sector development by providing financing, guarantees, equity investments, and mezzanine funds for projects that generate social and economic benefits.

Importance of ADB

The Asian Development Bank plays a crucial role in addressing the developmental challenges of the Asia-Pacific region. By financing infrastructure, promoting sustainable growth, supporting climate resilience, and fostering regional integration, it contributes significantly to economic and social development.

ADB has been a major development partner for many countries, including India, supporting projects in sectors such as transport, energy, urban development, water supply, and renewable energy.

Conclusion

The Asian Development Bank is one of the most important multilateral financial institutions in the world. Through its financial assistance, technical expertise, and regional cooperation initiatives, it helps member countries achieve sustainable development, reduce poverty, and improve the quality of life of millions of people across the Asia-Pacific region.

Recently, India issued a Notice to Airmen (NOTAM) declaring a large area of the Bay of Bengal as a danger zone in connection with a long-range missile test.

What is a NOTAM?

A Notice to Airmen (NOTAM), now officially referred to as a Notice to Air Mission, is an aviation notice containing information about the establishment, condition, or change in any aeronautical facility, service, procedure, or hazard. The timely availability of this information is essential for personnel involved in flight operations.

In simple terms, a NOTAM is an official notification issued to alert pilots and other airspace users about conditions that may affect the safety of a flight. It provides critical operational information that may not be available through regular aeronautical publications.

Purpose of NOTAMs

The primary objective of a NOTAM is to ensure the safety and efficiency of air navigation. It keeps pilots informed about temporary or sudden changes in the aviation environment that could affect flight planning and operations.

By reviewing NOTAMs before departure, pilots can identify hazards, modify flight routes if necessary, and take appropriate precautions to ensure safe operations.

Information Contained in NOTAMs

NOTAMs provide updates regarding changes in airspace, airports, navigation facilities, and aviation services. They inform pilots about situations that may affect aircraft operations and require special attention during flight planning.

The information is generally temporary in nature and may remain valid for a few hours, days, or weeks, depending on the situation.

Reasons for Issuing NOTAMs

National aviation authorities issue NOTAMs for a variety of operational and safety-related reasons.

A NOTAM may be issued when there are air shows, parachute jumps, glider flying activities, or other aerial events that create temporary hazards in the airspace.

It is also issued when heads of state or other important dignitaries undertake flights that require special airspace restrictions.

NOTAMs inform pilots about the closure of runways, taxiways, or airport facilities that may affect aircraft movement.

They may also be issued when radio navigation aids become unserviceable, reducing navigational support available to pilots.

Military activities such as missile tests, air force exercises, and defence operations often require temporary restrictions on airspace and are therefore communicated through NOTAMs.

Similarly, NOTAMs may warn pilots about unserviceable obstruction lights on tall structures or the temporary construction of obstacles such as cranes near airports.

How are NOTAMs Communicated?

NOTAMs are issued by national aviation authorities and are disseminated through the fastest available means to all concerned users whose flight operations may be affected.

The information is communicated to airlines, pilots, air traffic controllers, and other aviation stakeholders who require immediate knowledge of the hazard or operational change.

Generally, NOTAMs are distributed when users would not otherwise receive at least seven days' prior notification of the information.

Format of NOTAMs

To ensure brevity, accuracy, and rapid dissemination, NOTAMs are written in a standardized and coded format. Although they use abbreviations and special coding systems, trained aviation personnel can readily interpret the information and identify the relevant hazard or operational change.

This standardized format allows the information to be transmitted efficiently across international aviation networks.

Accessing NOTAMs

Today, NOTAMs are easily accessible through online aviation platforms, electronic flight planning systems, and aviation weather services.

Pilots and flight operators routinely review these notices before departure to obtain the latest information regarding airspace restrictions, airport conditions, and navigation facilities.

Importance of NOTAMs

NOTAMs play a crucial role in maintaining aviation safety. They provide pilots with real-time information about hazards and operational changes that may not appear in regular aeronautical charts or publications.

Failure to review NOTAMs before a flight can expose pilots, passengers, and other airspace users to significant risks. Therefore, checking NOTAMs is considered an essential part of pre-flight planning and flight safety procedures.

Conclusion

A Notice to Airmen (NOTAM) is a critical aviation communication tool that informs pilots and airspace users about temporary hazards, operational changes, and restrictions affecting flight operations. By ensuring that accurate and timely information reaches aviation stakeholders, NOTAMs contribute significantly to the safety, efficiency, and reliability of air transport systems worldwide.