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Ol Doinyo Lengai is an active volcano in northern Tanzania. It consists of a volcanic cone with two craters, the northern of which has erupted during historical time. Uniquely for volcanoes on Earth, it has erupted natrocarbonatite, [3] an unusually low temperature and highly fluid type of magma. Eruptions in 2007–2008 affected the ...
The conversion of sulfur dioxide to sulfuric acid, which condenses rapidly in the stratosphere to form fine sulfate aerosols. A volcanic winter is a reduction in global temperatures caused by droplets of sulfuric acid obscuring the Sun and raising Earth's albedo (increasing the reflection of solar radiation) after a large, sulfur-rich, particularly explosive volcanic eruption.
1816 is known as the Year Without a Summer because of severe climate abnormalities that caused average global temperatures to decrease by 0.4–0.7 °C (0.7–1 °F). [1] Summer temperatures in Europe were the coldest of any on record between 1766 and 2000, [2] resulting in crop failures and major food shortages across the Northern Hemisphere. [3]
Tenerife Sur, located on the southern part of the largest island in the Canaries, experiences high temperatures in the low 70s F during the middle of winter and in the mid-80s F during the middle ...
[119] [122] The presence of a weak hydrothermal system is likely [123] [124] at Uturuncu although probably at great depth, considering the low temperature and spread out nature of the fumarolic activity. [66] There may be a shallow magma chamber below the volcano at 1–3 kilometres (0.62–1.86 mi) below sea level. [65] [125]
This list of shield volcanoes includes active, dormant and extinct shield volcanoes.Shield volcanoes are one of the three types [specify] of volcanoes. They have a short cone shape, and have basaltic lava which means the lava has low viscosity (viscosity is a measure of the ability for a liquid to flow)
These vents were considered "low temperature vents" because their waters were only about 30 °C (86 °F). The volcanic eruption of 1996 and the creation of Pele's Pit changed this, and initiated high temperature venting; exit temperatures were measured at 77 °C (171 °F) in 1996.
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