Increasing seismic activity, red alert issued for Indonesia’s Sinabung volcano

December 18, 2013INDONESIAThe Indonesian Volcanological Survey (VSI) informed in its latest press release that a significant increase in seismic activity was detected during the past days. While the volcano has been relatively calm at the surface, producing only a dilute gas plume with some ash reaching about 1 km above the crater, the increase in earthquakes suggests that new magma is currently rising and could produce new (potentially large) explosions. In particular, low-frequency and so-called hybrid earthquakes, typical of fluid movements inside the volcanic edifice, have climbed to almost one 1000 per day. Continuous volcanic tremor (internal vibration) at medium levels has also been detected over the past days. Deformation measurements with tilt-meters on the northern and eastern flank and EDM (electronic distance meters) show a fluctuating trend of inflation, suggesting the presence of an intruding magma body at shallow depth. Gas and temperature measurements are not conclusive from the VSI report, as quality / temporal coverage are insufficient. The exclusion zone was extended to 5 km radius, and the volcano remains on highest alert level and Aviation Color Code Red, because explosive eruptions with high-level ash clouds could occur any time. –Volcano Discovery
This entry was posted in Earth Changes, Earth Watch, Earthquake Omens?, Environmental Threat, High-risk potential hazard zone, Potential Earthchange hotspot, Seismic tremors, Signs of Magnetic Field weakening, Time - Event Acceleration, Volcanic Ash, Volcanic Eruption, Volcanic gas emissions, Volcano unrest, Volcano Watch. Bookmark the permalink.

1 Response to Increasing seismic activity, red alert issued for Indonesia’s Sinabung volcano

  1. Bone idle says:

    Don’t need tiltmeters. If you compare the old images to the latest from the webcam (when the clouds lift) you can see the bulging that has occurred.

    Like

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