POST 21 AUGUST 2018 EARTHQUAKE ASSESMENT AT DEVIL’S WOODYARD MUD VOLCANO
Comparison of the area before and after the earthquake
According to the caretaker of the Park, during the earthquake the surface of the tassik shook like a bowl of jello. The ground moved up and down violently. Immediately after it was noticed that the tassik was visibly lower in height and the existing vents became very active erupting mud and gas.
This behavior is probably the erupted mud has not been able to compact as yet and is still saturated with gas and water. Shaking by the earthquake accelerated the compaction of the mud and squeezed out some of the trapped gas and liquid mud to the surface from new vents.
The concentric subsidence is more than likely due to compaction near the soft centre of the tassik.
There was no significant change in the location of mud vent activity