My friend Oystein Lund Andersen returned from Mount Bromo, and shares some photos on his blog (http://www.oysteinlundandersen.com/bromo-and-the-tengger-caldera/2015-october/) .
Activity of the Volcano
This was my 5th visit this year. Activity on Bromo has increased in 2015, compared to 2014. Gas emissions, especially sulphur outputs have increased in 2015. A constant rumbling sound could be heard during my visit to the crater on the 19th October, caused by what seems to be, intense gas pressure. The result of a increase of sulphur emissions can clearly be seen in the crater area (see photos from 19th October), where the sulphur emissions have colored the volcanic soil with a coat of yellow/green. A strong smell of Sulphur is often noticable as far as the village of Cemara Lowang and downwind in the villages East of the Tengger Caldera.
Here is above a photograph taken by me on September 18th 2015. I had also been surprised by the roar emitted during the release of gas .
Almost at the same place on October 19, below.
Already this year, the GVP had published an article:
PVMBG reported that during 1 March-13 July white plumes from Tengger Caldera’s Bromo cone rose as high as 100 m above the crater, and a sulfur dioxide odor was periodically noted at the Bromo observation post. Seismicity was dominated by tremor, but also included volcanic earthquakes. The Alert Level remained at 2 (on a scale of 1-4). Residents and visitors were warned not to approach the crater within a radius of 1 km.
November 16, 2015. Bromo, Indonésia :
Source : Oystein Lund Andersen , GVP.
Photos : Oystein Lund Andersen, Georges Vitton.