Volcano news: Pacaya (Guatemala)
Pacaya volcano (Guatemala) field report: intense spattering from vent inside Mackenney crater
Mittwoch Dez 23, 2015 00:18 | VON: T
View into Pacaya's Mackenney crater this morning (22 Dec 2015)
During our visit at the volcano this morning, the first direct observation of the crater was possible following a period of 5 days of bad weather. When we climbed the crater rim, we observed violent, continuous lava spattering from the central vent on an intra-crater cinder cone inside Mackenney crater.
Spattering from the active vent at the top of the intra-crater cinder cone
Activity was fairly regular in intensity, but went through alternating periods of stronger and weaker overall strength, lasting 10-20 minutes each. During the strongest phases, some stronger spattering events, resembling strombolian explosions (except that this activity was continuous), lava bombs were ejected to heights of 150-200 m, i.e. well above the crater rim, but mostly fell back inside. Only few fresh (days to few weeks old) bombs were seen on or near the (eastern) crater rim.
Around the main vent at the bottom of the the approx. 100 m deep crater, a small intra-crater cinder cone, about 15 m tall, has formed, obviously containing a small boiling lava lake in its main vent. A small secondary vent is located at the eastern side of the cone and also showed spattering occasionally, mainly during phases of elevated activity at the main vent. Parts of the crater floor have been covered by presumably fresh lava flows.
Dienstag, Nov 10, 2015
Near continuous spattering and weak strombolian activity is occurring from a vent deep inside the Mackenney crater. ... [mehr]
Freitag, Nov 06, 2015
Weak, deep-seated explosive activity continues inside the Mackenney crater. INSIVUMEH reports moderate degassing creating a plume of 150-200 m height with pulsating emissions of bluish gas. At night, weak glow is visible from the crater. [mehr]
Mittwoch, Sep 23, 2015
INSIVUMEH reported that during 17-19 September white-and-blue fumarolic plumes rose from Pacaya's Mackenney cone and drifted W and S. Tremor was detected and incandescence from the crater was visible at night. ... [mehr]
Dienstag, Sep 01, 2015
Tremor at Pacaya which began on 16 June continued to be elevated at least through 18 August. INSIVUMEH reported that white-and-blue gas plumes were accompanied by a small gas emission on 1 September; the plume drifted W. [mehr]