quinta-feira, junho 15, 2023
A erupção do Pinatubo, que afetou significativamente o clima da Terra, começou há 32 anos
Postado por Fernando Martins às 00:32 0 bocas
Marcadores: Alterações climáticas, erupção pliniana, Filipinas, Pinatubo, Vulcão
quarta-feira, junho 15, 2022
A erupção do Pinatubo, que afetou significativamente o clima da Terra, começou há 31 anos
Postado por Fernando Martins às 00:31 0 bocas
Marcadores: Alterações climáticas, erupção pliniana, Filipinas, Pinatubo, Vulcão
terça-feira, junho 15, 2021
Uma erupção do Pinatubo afetou significativamente o clima em toda a Terra há trinta anos
Postado por Fernando Martins às 00:30 0 bocas
Marcadores: Alterações climáticas, erupção pliniana, Filipinas, Pinatubo, Vulcão
segunda-feira, junho 15, 2020
Começou há 29 anos uma erupção que afetou significativamente o clima em toda a Terra
Postado por Fernando Martins às 00:29 0 bocas
Marcadores: Alterações climáticas, erupção pliniana, Filipinas, Pinatubo, Vulcão
sábado, junho 15, 2019
O Pinatubo, vulcão das Flipinas, teve há 28 anos uma erupção que afetou o clima terrestre
2, bringing vast quantities of minerals and metals to the surface environment. It injected large amounts of particulate into the stratosphere – more than any eruption since that of Krakatoa in 1883. Over the following months, the aerosols formed a global layer of sulfuric acid haze. Global temperatures dropped by about 0.5 °C and ozone depletion temporarily increased substantially.
Postado por Fernando Martins às 00:28 0 bocas
Marcadores: Alterações climáticas, erupção pliniana, Filipinas, Pinatubo, Vulcão
quarta-feira, abril 10, 2019
O Tambora explodiu há 204 anos
Mount Tambora (or Tamboro) is an active stratovolcano on the island of Sumbawa, Indonesia. Sumbawa is flanked both to the north and south by oceanic crust, and Tambora was formed by the active subduction zone beneath it. This raised Mount Tambora as high as 4.300 m, making it, in the 18th century, one of the tallest peaks in the Indonesian archipelago. After a large magma chamber inside the mountain filled over the course of several decades, volcanic activity reached a historic climax in the eruption of 10 April 1815. This eruption was approximately VEI-7, the only eruption unambiguously confirmed of that size since the Lake Taupo eruption in about AD 180. The Heaven Lake eruption of Baekdu Mountain, circa AD 969, may have also been VEI-7.
Postado por Fernando Martins às 02:04 0 bocas
Marcadores: ano sem verão, erupção pliniana, Indonésia, monte Tambora, Sumbawa, Tambora, Vulcanologia
domingo, junho 15, 2014
O Pinatubo, vulcão das Flipinas, teve há 23 anos uma erupção que afetou o clima do mundo inteiro
2, bringing vast quantities of minerals and metals to the surface environment. It injected large amounts of particulate into the stratosphere – more than any eruption since that of Krakatoa in 1883. Over the following months, the aerosols formed a global layer of sulfuric acid haze. Global temperatures dropped by about 0.5 °C and ozone depletion temporarily increased substantially.
Postado por Fernando Martins às 23:00 0 bocas
Marcadores: Alterações climáticas, erupção pliniana, Filipinas, Pinatubo, Vulcão
quinta-feira, abril 10, 2014
Há 199 anos a maior explosão estudada por vulcanólogos aconteceu na Indonésia
Mount Tambora (or Tamboro) is an active stratovolcano on the island of Sumbawa, Indonesia. Sumbawa is flanked both to the north and south by oceanic crust, and Tambora was formed by the active subduction zone beneath it. This raised Mount Tambora as high as 4.300 m, making it, in the 18th century, one of the tallest peaks in the Indonesian archipelago. After a large magma chamber inside the mountain filled over the course of several decades, volcanic activity reached a historic climax in the eruption of 10 April 1815. This eruption was approximately VEI-7, the only eruption unambiguously confirmed of that size since the Lake Taupo eruption in about AD 180. The Heaven Lake eruption of Baekdu Mountain, circa AD 969, may have also been VEI-7.
Postado por Fernando Martins às 19:09 0 bocas
Marcadores: ano sem verão, erupção pliniana, Indonésia, monte Tambora, Sumbawa, Tambora, Vulcanologia
sábado, maio 18, 2013
O Monte Santa Helena entrou em erupção há 33 anos
In 1980, a major volcanic eruption occurred at Mount St. Helens, a volcano located in Washington, in the United States. The eruption (which was a VEI 5 event) was the only significant one to occur in the contiguous 48 US states since the 1915 eruption of Lassen Peak in California. The eruption was preceded by a two-month series of earthquakes and steam-venting episodes, caused by an injection of magma at shallow depth below the volcano that created a huge bulge and a fracture system on Mount St. Helens' north slope.
Prior to the eruption, USGS scientists convinced local authorities to close Mount St. Helens to the general public and to maintain the closure in spite of pressure to re-open it; their work saved thousands of lives. An earthquake at 8:32:17 a.m. PDT (UTC−7) on Sunday, May 18, 1980, caused the entire weakened north face to slide away, suddenly exposing the partly molten, gas- and steam-rich rock in the volcano to lower pressure. The rock responded by exploding a hot mix of lava and pulverized older rock toward Spirit Lake so fast that it overtook the avalanching north face.
An eruption column rose 80,000 feet (24,400 m) into the atmosphere and deposited ash in 11 U.S. states. At the same time, snow, ice and several entire glaciers on the volcano melted, forming a series of large lahars (volcanic mudslides) that reached as far as the Columbia River, nearly 50 miles (80 km) to the southwest. Less severe outbursts continued into the next day only to be followed by other large but not as destructive eruptions later in 1980.
Fifty-seven people (including innkeeper Harry R. Truman, photographer Reid Blackburn and geologist David A. Johnston) perished. Hundreds of square miles were reduced to wasteland causing over a billion U.S. dollars in damage ($2.74 billion in 2011 dollars), thousands of game animals killed, and Mount St. Helens was left with a crater on its north side. At the time of the eruption, the summit of the volcano was owned by the Burlington Northern Railroad, but afterward the land passed to the United States Forest Service. The area was later preserved, as it was, in the Mount St. Helens National Volcanic Monument.
Postado por Fernando Martins às 03:30 0 bocas
Marcadores: erupção pliniana, lahar, Monte Santa Helena, nuvem ardente, sismo, vulcanismo, Vulcão