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Since mid-June 1991, when violent eruptions triggered Mount Pinatubo's first lahars in 500 years, a system to monitor and warn of lahars has been in operation. Radio-telemetered rain gauges provide data on rainfall in lahar source regions, acoustic flow monitors on stream banks detect ground vibration as lahars pass, and staffed watchpoints ...
The injection of aerosols into the stratosphere is thought to have been the largest since the 1883 eruption of Krakatoa, with a total mass of SO 2 of about 17,000,000 t (19,000,000 short tons) being injected – the largest volume ever recorded by modern instruments (see chart and figure).
To date, the largest explosion occurred at 05:55 AKDT April 4, lasted more than 30 minutes, and is comparable in size to the largest event of the 1989/1990 Redoubt eruption. Three major lahars (volcanic mudflows), on March 23, March 26, and April 4, have inundated the Drift River Valley and its downstream coastal fan.
Pinatubo is known for its VEI-6 eruption on June 15, 1991, the second-largest terrestrial eruption of the 20th century after the 1912 eruption of Novarupta in Alaska. [7] The eruption coincided with Typhoon Yunya making landfall in the Philippines, which brought a dangerous mix of ash and rain to nearby towns and cities. Early predictions led ...
Lahars killed more than 4,000 people. [15] 4 Mount Usu [86] Japan 1822 50 [90] 4 Volcán de Colima [60] Mexico 1818 4 Mount Raung [91] Indonesia 1817 7 Mount Tambora [92] Indonesia 1815 71,000–250,100+ Largest and deadliest volcanic eruption in recorded history. Caused the "Year Without a Summer" in 1816. 4 Mount Mayon [71] Philippines 1814 1,200
The Dec. 14 flare measured as an X2.8, but is far from the strongest recorded by scientists. The largest in the past decade was a X8.2 recorded on Sep 10, 2017, NASA says. Planet survives ...
A giant anaconda species captured recently in the Amazon of Ecuador by a team of scientists is the largest to ever be documented, USA TODAY previously reported, and now, there are images showing ...
A large outpouring of lava on land, believed to have caused the Permian–Triassic extinction event, the largest mass extinction ever. [57] Karoo-Ferrar: 183 Mainly Southern Africa and Antarctica. Also South America, India, Australia and New Zealand 2.5: Formed as Gondwana broke up [58] Paraná and Etendeka traps: 133 Brazil/Angola and Namibia: 2.3