Source: NDTV
Subject: Mapping
Context: Mount Semeru, Indonesia’s tallest and most active volcano on Java Island, erupted violently, spewing ash up to 13 km into the sky and triggering dangerous pyroclastic flows.
About Mount Semeru:
- What it is?
- Mount Semeru is an active stratovolcano and the third-tallest volcano in Indonesia, known for continuous low-level eruptions since 1967.
- Located in: Eastern Java, Indonesia—at the southern end of the Tengger Volcanic Complex in a major subduction zone where the Indo-Australian Plate sinks beneath the Eurasian Plate.
- Key Features:
- Elevation 3,676 metres, steep cone, andesitic lava.
- Frequently produces pyroclastic flows, ash plumes, and crater explosions (over 61 eruptive periods since 1818).
- Known as Mahameru (“Great Mountain”), derived from the sacred Hindu Mountain Meru/Sumeru.
- Surrounded by calderas, crater lakes, and volatile volcanic belts forming one of the most hazardous zones in Java.
About Indonesia:
- What it is?
- Indonesia is a Southeast Asian archipelago nation, the world’s largest island country with >17,500 islands and the 4th most populous nation globally.
- Location: Between the Indian Ocean and Pacific Ocean, straddling the Equator and sitting on the geologically active Pacific Ring of Fire.
- Capital:
- Neighbouring Nations: Borders Malaysia (Borneo), Papua New Guinea (New Guinea), Timor-Leste, India’s Andaman Sea region.
- Geological Features:
- One of the most tectonically active zones on Earth, with nearly 130 active volcanoes.
- Hosts deep ocean trenches like the Java Trench (7,450 m).
- Features massive volcanic arcs, plate collision zones, coral islands, and biodiverse rainforests shaped by complex crustal interactions.
