New Zealand’s Mount Ruapehu. September 23,2021 A lake at the top of the volcano supplies the primary hints to what is occurring below. While passing over the North Island of New Zealand, an astronaut onboard the International Space Station (ISS) took a picture of Mount Ruapehu, using a nadir (directly down) view of the mountain and Tongariro National Park. Ruapehu is an active stratovolcano that stands 2,797 meters (9,177 feet) high at its acme. It is the highest mountain on the North Island. A stratovolcano, likewise called a composite volcano, is a high, cone-shaped volcano developed by lots of layers (strata) of solidified lava, tephra, pumice, and ashes. Unlike guard volcanoes, stratovolcanoes have a high slope and periodic explosive eruptions. They are amongst the most typical kinds of volcanoes, while guard volcanoes are less typical. 3 of the most popular examples of stratovolcanoes are Vesuvius in Italy, whose devastating eruption in advertisement 79 buried the Roman cities of Pompeii and Herculaneum; Krakatoa in Indonesia, understood for its disastrous eruption in 1883; and Mount St. Helens in Washington, which had a significant eruption in1980 Near the top lies Crater Lake (Te Wai ā-moe), which is warmed by a hydrothermal system within the volcano. The lake stays warm year-round (15 to 45 degrees Celsius/ 60 to 110 degrees Fahrenheit) and is extremely acidic (pH
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