Mesmerising lava flows in Hawaii's Kilauea volcano.Come face-to-face with one of nature's most intriguing phenomena, lava, as it flows from Hawaii's Kilauea volcano, consuming everything in its path.
You can only dare look at it but don't touch it.This type of lava flow is gravity-driven rather than being pushed by explosive pressure. The lava flows under its own heavy weight and that of the lava upstream. In fact, fluid dynamicists refer to this kind of flow as a gravity current, a term also applied to avalanches, turbidity currents and cold drafts that sneak under your door in the wintertime.
MESMERISING LAVA FLOWS FROM KILAUEA VOLCANO IN HAWAII
How quickly these viscous flows spread depends on factors like the density and viscosity of the lava and on the volume of lava being released at the vent. As the lava cools, its viscosity increases rapidly, and an outer crust can solidify while molten lava continues to flow beneath.