User:Börje Dahrén (UU)/sandbox

Migration Magma develops within the mantle or crust when the temperature-pressure conditions favor the molten state. Magma rises toward the Earth's surface when it is less dense than the surrounding rock and when a structural zone allows movement. Magma develops or collects in areas called magma chambers. Magma can remain in a chamber until it cools and crystallizes forming igneous rock, it erupts as a volcano, or moves into another magma chamber.

https://en.wikipedia.org/wiki/Magma

https://en.wikipedia.org/wiki/Krakatoa#Anak_Krakatau Anak Krakatau has grown at an average rate of five inches (13 cm) per week since the 1950s. This equates to an average growth of 6.8 meters per year. The island is still active, with its most recent eruptive episode having begun in 1994. Quiet periods of a few days have alternated with almost continuous Strombolian eruptions since then. Hot gases, rocks, and lava were released in an eruption in April 2008. Scientists monitoring the volcano have warned people to stay out of a 3 km zone around the island.[23] Several videos of Krakatoa on YouTube show recent footage of eruptions[24] and of the inside of the crater as seen from the rim of the volcano.[25] On 6 May 2009 the Volcanological Survey of Indonesia raised the eruption alert status of Anak Krakatau to Level III.[26] A recent expedition to the volcano has revealed that a 100-meter (328-foot)-wide lava dome is growing in its crater. The dome has two active vents that eject incandescent gas.

kandidater: https://en.wikipedia.org/wiki/Uppsala_University#Campus