Semeru volcano

Stratovolcano 3676 m (12,060 ft)
East Java, Indonesia, -8.11°S / 112.92°E
Current status: erupting (4 out of 5)
Last update: 20 Jun 2021 (Volcanic Ash Advisory)
Night time mild eruptions from Semeru
Night time mild eruptions from Semeru

Semeru, the highest volcano on Java, and one of its most active, lies at the southern end of a volcanic massif extending north to the Tengger caldera. Semeru, a favourite mountain trekking destination, has been in almost continuous eruption since 1967. It is known for its regular ash explosions that typically occur at intervals of 10-30 minutes.

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Typical eruption style: Explosive. Near constant strombolian activity, occasionally stronger explosions, lava flows and pyroclastic flows.
Semeru volcano eruptions: 1818, 1829, 1830, 1832, 1836, 1838, 1842, 1844, 1845, 1848, 1849(?), 1851, 1856, 1857, 1865, 1866(?), 1887, 1887, 1888, 1889-91, 1892, 1893, 1893-94, 1895, 1896, 1897, 1899, 1899, 1900, 1901, 1903, 1904, 1905, 1907, 1908, 1909-10, 1910-11, 1911, 1912, 1913, 1941-42, 1945, 1946, 1946-47, 1950-64, 1967-ongoing

Latest nearby earthquakes

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Background

The steep-sided volcano, also referred to as Mahameru (Great Mountain), rises abruptly to 3676 m above coastal plains to the south. Gunung Semeru was constructed south of the overlapping Ajek-ajek and Jambangan calderas. A line of lake-filled maars was constructed along a N-S trend cutting through the summit, and cinder cones and lava domes occupy the eastern and NE flanks. Summit topography is complicated by the shifting of craters from NW to SE. Frequent 19th and 20th century eruptions were dominated by small-to-moderate explosions from the summit crater, with occasional lava flows and larger explosive eruptions accompanied by pyroclastic flows that have reached the lower flanks of the volcano.

Semeru Photos

Erupting Semeru volcano at night (March 2004) - a small explosion expels incandescent bombs that roll down its southern flank. (Photo: Tom Pfeiffer)
Erupting Semeru volcano at night (March 2004) - a small explosion expels incandescent bombs that roll down its southern flank. (Photo: Tom Pfeiffer)
The growing lava dome of Semeru volcano in early November 2015. (Photo: Andi / VolcanoDiscovery Indonesia)
The growing lava dome of Semeru volcano in early November 2015. (Photo: Andi / VolcanoDiscovery Indonesia)
Eruption at Semeru volcano (East Java) in the golden morning light (Photo: Tom Pfeiffer)
Eruption at Semeru volcano (East Java) in the golden morning light (Photo: Tom Pfeiffer)
Ash eruption at Semeru in early light (Photo: Tom Pfeiffer)
Ash eruption at Semeru in early light (Photo: Tom Pfeiffer)
 



Semeru volcano tours:
From Krakatau to Bali (16-days study and photo tour to Java, Indonesia)
Volcanoes of Java (17-day walking and trekking tour on Java)
Volcanoes of East Java (4-5 days walking tour to Bromo, Semeru and Ijen)
Bromo, Semeru, Ijen (trekking tour to Semeru, Bromo, Ijen volcanoes (East Java))

See also: Sentinel hub | Landsat 8
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