adjective. Of, relating to, or originating from an explosive volcanic eruption.

adjective. Of or relating to Vulcan.

adjective. Of or relating to metalworking or craft.

""My hope is that we'll see some distinctive signals in the infrasound that will allow us to discriminate the different kinds of eruptive styles - from effusive events that produce lava flows, or small explosive events we call vulcanian eruptions, to the large 'Plinian' events of particular concern to aviation."