Places in News Current Affairs MCQs

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Recently, more than 1,200 earthquakes around Greece’s Santorini Island showed that Santorini and Kolumbo volcano share an underground magma reservoir. The Santorini and Kolumbo volcanoes are located in Greece, in the southern Aegean Sea, forming part of the Hellenic Volcanic Arc. Seismic and GPS data (2024–25) proved both volcanoes are interconnected through a common magma system. This is the first scientific evidence of their magmatic link, complicating eruption forecasting and highlighting the need for real-time monitoring. Both lie in the Hellenic Volcanic Arc, one of Europe’s most active volcanic zones, critical for global disaster management studies.

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A collaborative research team led by University of Tasmania scientists completed a 54-day voyage on CSIRO research vessel (RV) Investigator to study the 2022 Hunga Volcano eruption in Tonga. It is a submarine stratovolcano in the Tongan archipelago, southern Pacific Ocean. The volcano has erupted regularly over past decades. On January 15, 2022, it had an explosive eruption, one of the largest of the 21st century. The eruption sent volcanic plume into the stratosphere, triggered shock waves, and caused tsunami waves across ocean basins. The voyage collected data to understand volcanic impacts, seafloor changes, and tsunami risks, aiding Pacific disaster preparedness.

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India’s only mud volcano at Baratang, Andaman and Nicobar Islands, has recently erupted. It is located in the North and Middle Andaman district, about 150 km from Port Blair. Previous eruption occurred in 2005 due to oceanic seismic shifts. Mud volcanoes in Baratang are the only known volcanoes in the Indian subcontinent. The eruption is significant for geological study and tourism in the region.

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Myanmar has assured India that there is no Chinese presence at the Coco Islands in the Bay of Bengal. Coco Islands are a small group of islands located in the Bay of Bengal, under Yangon Region, Myanmar. Great Coco Island, the largest, is located 55 km from India’s Andaman and Nicobar Islands. Geologically, the islands are an extension of the Arakan (Rakhine) Mountains, forming a chain that submerges and re-emerges as the Andaman and Nicobar Islands. The islands share the same topography as India’s Andaman & Nicobar Islands, making them strategically important for maritime security. The assurance comes amid regional security concerns in the Bay of Bengal.

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The Taftan Volcano in Iran is showing signs of reawakening after 700,000 years. It is a 12,927-foot or 3,940-metre-high semi-active stratovolcano. It lies in southeastern Iran, about 56 kilometres from the Pakistan border. It is the only active volcano in the Makran continental volcanic arc. The volcano formed due to the subduction of the Arabian Ocean crust beneath the Eurasian continent. It has two summits named Narkuh and Matherkuh. Taftan has an active hydrothermal system with sulfur-emitting vents called fumaroles. It has not erupted in recorded human history.

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Researchers studied the ratio of small to large earthquakes beneath Mount Etna and found it strongly linked to volcanic activity over the past 20 years. Mount Etna is an active stratovolcano located on the island of Sicily in the Mediterranean Sea. Sicily is a part of Italy. It lies at the convergent boundary of the African Plate and the Eurasian Plate. It is the tallest active volcano in Europe and the highest mountain in Italy south of the Alps. The volcano’s eruptive history dates back 500,000 years, with 2,700 years well documented. It was featured in ancient Greek legends. Mount Etna is a UNESCO World Heritage Site.

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Recently, the Taal Volcano in the Philippines reportedly erupted three times. It is located in Batangas province, about 70 km south of Manila, Philippines. The Philippine Institute of Volcanology and Seismology (PHIVOLCS) classifies it as a complex volcano. Taal is an active volcano within a large caldera, having 38 eruptions in the past 450 years. The caldera formed through prehistoric eruptions between 140,000 and 5,380 BCE. It is a stratovolcano with a crater lake on a 5-km-wide volcanic island. It consists of multiple cones, hills, and craters instead of a single dome, making it geologically unique.

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Scientists have warned that the Axial Seamount underwater volcano near the Oregon coast, USA, may erupt soon due to increased earthquakes. It lies about 300 miles off Oregon’s coast in the Pacific Ocean. Axial Seamount is a shield volcano with a large caldera at its summit. It rises to a depth of 1,400 metres below sea level. It is part of the Ocean Observatories Initiative (OOI) and houses the New Millennium Observatory (NeMO), the world’s first underwater volcanic observatory. NeMO transmits real-time volcanic data via undersea cables to Pacific City, Oregon, aiding scientific research.

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Lake Suchitlán in El Salvador is facing a crisis due to the rapid spread of invasive water lettuce. Lake Suchitlán is located in El Salvador. Water lettuce is a perennial, free-floating aquatic weed found in tropical regions across Asia, Africa, and the Americas. It is also called water cabbage, Nile cabbage, or shellflower. The plant has lettuce-like leaves with long, feathery white to tan roots hanging below.

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A 5.8 magnitude earthquake recently struck Negros Island, Philippines. Negros Island is part of the Visayan Islands in central Philippines. It is the fourth largest and third most populous island in the country. The island is boot-shaped, measuring 217 km long and 35–79 km wide. It is separated from Panay Island by the Guimaras Strait and from Cebu Island by the Tanon Strait. The Visayan Sea borders it to the north and the Sulu Sea to the south. A central mountain range runs through the island, containing Mount Canlaon (2,465 m) — an active volcano and the highest peak on Negros.