Real-time coverage of volcanoes event — Ambrym Volcano, Vanuatu — Pandita Data.
🌋 OPEN LIVE 3D EARTHQUAKE DASHBOARDAmbrym volcano in Vanuatu has entered an active eruptive phase as of January 8, 2026, with continuous ash emissions and lava lake activity in its dual calderas. Located at 16.25°S, 168.12°E in the central New Hebrides Arc, Ambrym poses immediate air quality hazards across the South Pacific island nation and threats to regional aviation corridors. The volcano's basaltic lava lakes—rare persistent features—are now feeding sustained ash plumes reaching heights of 2–4 km above the summit. Vanuatu's National Disaster Management Office has elevated alert status, and regional meteorological services have issued ash advisories affecting flight routes across Fiji and New Caledonia.
Ambrym is a shield volcano straddling the New Hebrides Subduction Zone, where the Indo-Australian Plate descends beneath the Pacific Plate at a rate of 8–9 cm/year. This subduction geometry generates magma through decompression melting in the mantle wedge, feeding basaltic volcanism across the Vanuatu arc. Ambrym's two main calderas—Benbow (northern) and Marum (southern)—host persistent lava lakes sustained by continuous degassing and shallow magma ascent. The current eruption cycle reflects increased magma flux at depth, driving dissolved volatile exsolution and fragmentation of magma at the surface.
Ash emission mechanics at Ambrym differ from explosive subduction-zone volcanoes like Sakurajima. Here, low-viscosity basaltic magma permits strombolian to Hawaiian eruption styles—episodic bubble coalescence rather than sustained pyroclastic fragmentation. However, sustained degassing from exposed lava lakes can inject fine ash (PM2.5 and PM10) into the free troposphere, affecting regions downwind for hundreds of kilometers. The ash carries iron oxides, silicates, and sulfur dioxide, posing respiratory and visibility risks.
Real-time satellite data from NOAA's GOES-S and NASA's MODIS instruments detect thermal anomalies at Ambrym's calderas, confirming lava lake surface temperatures (900–1000°C). Ash column height and dispersal are tracked via visible and infrared satellite imagery, cross-referenced with wind data from NOAA's Global Forecast System (GFS) to predict downwind ash fall zones. USGS USGS Volcano Disaster Assistance Program monitors SO2 emissions using the OMI spectrometer, quantifying degassing rates. Pandita Data's 3D volcano simulation integrates live thermal, SO2, and ash trajectory data, allowing viewers to visualize caldera dynamics, understand magma-driven gas flux, and forecast ash transport across the South Pacific in real time.
Primary Hazard: Sustained ash emission (respiratory, visibility, agriculture)
Secondary Hazard: Acid rain (SO2 conversion); lava lake overflow (localized).
Affected Population: ~12,000 residents on Ambrym Island; broader regional exposure via ash fall.
Aviation Impact: FL180–FL350 airspace closure recommended within 100 km of summit; ash abrasion risks to turbines.
Historical Context: Ambrym erupts continuously or semi-continuously; major eruptions in 1913, 1974, 2015, 2018. This 2026 phase is typical for the volcano's activity cycle.