Merapi volcano – Rockfall from Lava-dome 12-14th January

Published: 16th January 2019.

Introduction

Arrived in Yogyakarta on the 12th January, and went on 3 field trips to the Southern side of the mountain to observe the volcano. Photos taken from distances of 5-25km from the volcanoes summit.

Activity of the Volcano:

Merapi have been busy building a lava-dome the last months. As of the 15th January, Indonesian Authorities (Center for Volcanology and Geological Hazard Mitigation`(PVMBG)) recorded the lava-dome to have a volume of 439.000m3, with a approximate growth rate of 3400m3 per day. I have made two Image-comparison below showing the growth of the Lava-dome (see below).

During my observation of Merapi, I observed several rockfall from the crater area. From a distance of 5km the sound of the rockfall could be clearly heard several times in the morning of the 14th January. The observed rockfall only descended down maybe 500m from the crater area. However Indonesian Authorities, have recent recorded a few rockfall events to have made it down more than 1km from the summit-crater area. Incandescent was seen on the lava dome itself (see photos 1-2) during the night, and during the rockfall events (see photos 8, 13-14).

Image Comparisons

Image comparison of crater area 11th November 2018 vs 13th January 2019

 

Image comparison showing the growth of the Lava-dome June 2018 – November 2018 – January 2019

 

Important Note:

This is my personal notes, and should not be considered as Official information regarding the volcano or its activity. For updated information and official statements on the volcanic activity of Merapi Volcano, visit the Indonesian authorities website MAGMA Indonesia. and Center for Volcanology and Geological Hazard Mitigation`(PVMBG) and BMKG – Indonesian Agency for Meteorology, Climatology and Geophysics. On Twitter (@id_magma , @vulkanologi_mbg and @infoBMKG)

The restriction/danger zone for Merapi is as of 16th January at 3km from the summit-crater of Anak-Krakatau, recommended by the Indonesian `Center for Volcanology and Geology and the volcano is at Level 2.

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Total photos in this article: 15 (Available in Jpg/Raw.). (200+ photos not published)

Total videos: – (Available in 4K).

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Merapi volcano lava-dome Indonesia Yogyakarta lava
Photo 1. Incandescence from on the lava-dome.
Merapi volcano lava-dome Indonesia Yogyakarta lava
Photo 2. Incandescence from on the lava-dome.
Merapi volcano lava-dome Indonesia Yogyakarta lava
Photo 3.
Merapi volcano lava-dome Indonesia Yogyakarta lava
Photo 4.
Merapi volcano lava-dome Indonesia Yogyakarta lava
Photo 5.
Merapi volcano lava-dome Indonesia Yogyakarta lava
Photo 6.
Merapi volcano lava-dome Indonesia Yogyakarta lava
Photo 7.
Merapi volcano lava-dome Indonesia Yogyakarta lava
Photo 8. Rockfall from the lava-dome seen from 25km away.
Merapi volcano lava-dome Indonesia Yogyakarta lava
Photo 9.
Merapi volcano lava-dome Indonesia Yogyakarta lava
Photo 10.
Merapi volcano lava-dome Indonesia Yogyakarta lava
Photo 11.
Merapi volcano lava-dome Indonesia Yogyakarta lava
Photo 12.
Merapi volcano lava-dome Indonesia Yogyakarta lava
Photo 13. Rockfall and Incandescence from on the lava-dome.
Merapi volcano lava-dome Indonesia Yogyakarta lava
Photo 14. Close up rockfall and Incandescence from on the lava-dome.
Merapi volcano lava-dome Indonesia Yogyakarta lava
Photo 15.

 

 



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