Results 271 to 280 of about 67,223 (338)
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Nature, 2009
A strong volcanic plume consists of a vertical column of hot gases and dust topped with a horizontal 'umbrella'. The column rises, buoyed by entrained and heated ambient air, reaches the neutral-buoyancy level, then spreads radially to form the umbrella.
Pinaki, Chakraborty +2 more
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A strong volcanic plume consists of a vertical column of hot gases and dust topped with a horizontal 'umbrella'. The column rises, buoyed by entrained and heated ambient air, reaches the neutral-buoyancy level, then spreads radially to form the umbrella.
Pinaki, Chakraborty +2 more
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Gondwana Research, 2019
Current understanding of biodiversity changes in the Permian is presented, especially the consensus and disagreement on the tempo, duration, and pattern of end-Guadalupian and end-Permian mass extinctions. The end-Guadalupian mass extinction (EGME; i.e.,
Jun Chen, Yigang Xu
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Current understanding of biodiversity changes in the Permian is presented, especially the consensus and disagreement on the tempo, duration, and pattern of end-Guadalupian and end-Permian mass extinctions. The end-Guadalupian mass extinction (EGME; i.e.,
Jun Chen, Yigang Xu
semanticscholar +1 more source
Volcanic Channels and Volcanic Features on Mars
2021Volcanic channels are common features on the terrestrial planets. They have diverse morphologies including sinuous rilles, channelized flows, and potentially collapsed lava tubes. Many of these channels are a part of a typical igneous assemblage of landforms.
Henrik Hargitai, Giovanni Leone
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Science, 2008
Analysis of acoustic signals from lab samples links rapid pressure drops of pore fluids with low-frequency volcanic earthquakes.
Burlini, L., Di Toro, G.
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Analysis of acoustic signals from lab samples links rapid pressure drops of pore fluids with low-frequency volcanic earthquakes.
Burlini, L., Di Toro, G.
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An Overview of the “Volcan Project”: An UAS for Exploration of Volcanic Environments
Journal of Intelligent and Robotic Systems, 2008This paper presents an overview of the Volcan Project, whose goal is the realization of an autonomous aerial system able to perform aerial surveillance of volcanic areas and to analyze the composition of gases inside volcanic plumes. There are increasing experimental evidences that measuring the chemical composition of volcanic gases can contribute to ...
ASTUTI G +5 more
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Volcanic Edifices and Volcanic Deposits
2004Young volcanoes contrast with most other mountains by forming lovely cones or impressive edifices sometimes rising high above their surroundings. Even small volcanoes, which almost always occur in groups, greatly enhance the attraction of an otherwise morphologically bland landscape.
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Quaternary Volcanism of the Central Volcanic Region
New Zealand Journal of Geology and Geophysics, 1964Abstract The main rock types of the Central Volcanic Region of the North Island of New Zealand are distributed in a roughly symmetrical fashion about an axis trending north‐north‐east from Tongariro National Park to near Maketu on the Bay of Plenty. Adjoining the outer margins of the Region are northward‐diverging
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Volcanic (Volcanic-Plutonic) Belts
1971In recent years, after the works of Ustiev and his co-workers [Ustiev, 1959, 19631, 19632, 1965; Speranskaya, 1961] on the study of the Okhotsk volcanic belt, this type of structure has gained considerable attention. The distinctive character of vulcanism, its superposition on older structural plans and its apparent independence of geosynclines, has ...
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Nature of volcanic gases and volcanic eruption
Bulletin of Volcanology, 19631) The chemical composition of volcanic gases emitted from fumaroles and hot springs represents their stages of the differentiation of magmatic emanation at their effusing points, although the nature of volcanic gases varies with their orifice temperatures and geological environments.
Iwaji Iwasaki +5 more
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