John Seach, Volcano Live

 Lava Breaching - John Seach

Breaching is a term to describe a lava flow breakout. The conditions from breaching require a high channel pressure and more fluid lava in the channel compared to the edges. Aa lava is the most prone to breaching.
Breaching usually occurs in the upper half of the lava flow. Therefore breaching tends to widen the lava flows rather than extend them lengthways. Note: It is rare for breached lava flows to extend more than 50% more than the original flow length.
Note: lava flows cool quicker on steep slopes and therefore stops quicker.


Lava Breaching
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