Putkivirtausta

Putkivirtausta, also known as "pipe flow" in English, is a phenomenon that occurs in certain types of volcanic eruptions. It is characterized by the ejection of molten rock, known as lava, through a conduit or pipe, which is a vertical shaft within the volcano. This process is distinct from other types of volcanic eruptions, such as Strombolian or Vulcanian eruptions, which involve the ejection of lava bombs or ash.

Putkivirtausta eruptions are typically associated with basaltic volcanoes, which are characterized by their low viscosity lava. The lava in a putkivirtausta eruption flows through the conduit at high velocities, often reaching speeds of several hundred meters per second. This rapid flow can create a distinctive sound, often described as a hissing or roaring noise, which is caused by the turbulent flow of the lava.

The conduit through which the lava flows is often lined with solidified lava, which can create a series of chambers and tunnels within the volcano. These features can influence the behavior of the eruption, as the lava may flow through different paths within the conduit.

Putkivirtausta eruptions can be hazardous, as the high-velocity lava can cause significant damage to nearby structures and infrastructure. However, they are also a fascinating natural phenomenon that provides valuable insights into the inner workings of volcanoes.