Actualités et mises à jour sur volcans et séismes

The Pusat Vulkanologi dan Mitigasi Bencana Geologi (PVMBG) reported that eruptive activity continued at Semeru during 26 February-4 March, with multiple, daily eruptive events recorded by the seismic network. Daily white-and-gray or gray ash plumes rose 200-1,300 m above the summit and drifted in multiple directions. The Alert Level remained at 2 (the second lowest level on a scale of 1-4). ... Tout lire

The Servicio Geológico Colombiano's (SGC) Observatorio Vulcanológico y Sismológico de Manizales reported that eruptive activity at Nevado del Ruiz continued during 4-11 March. Seismic data indicated that events associated with fluid movement increased in both number and intensity compared to the previous week. Some of the seismic events were associated with pulsating ash emissions; webcam images confirmed these ash emissions, including some with higher-temperature ejecta. ... Tout lire

The Balai Penyelidikan dan Pengembangan Teknologi Kebencanaan Geologi (BPPTKG) reported that the eruption at Merapi (on Java) continued during 28 February-6 March. Seismicity was at higher levels that the previous week. The SW lava dome produced 57 lava avalanches that traveled as far as 2 km SW down the Bebeng drainage, 43 that traveled as far as 2 km SW down the Krasak drainage, and 34 that traveled as far as 2 km SW down the Sat/Putih drainage. ... Tout lire

The Pusat Vulkanologi dan Mitigasi Bencana Geologi (PVMBG) reported that eruptive activity at Marapi continued during 5-11 March. At 0245 on 7 March a gray dense ash plume rose 1.2 km above the summit and drifted N. Almost two hours later, at 0431, a webcam image showed crater incandescence. ... Tout lire

The Pusat Vulkanologi dan Mitigasi Bencana Geologi (PVMBG) reported that an eruption at Lewotolok was ongoing during 5-11 March. White-and-gray ash plumes that were sometimes dense rose as high as 600 m above the summit and drifted E and SE, W, and NW. Rumbling sounds were reported on 10 March. ... Tout lire