caldera

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Words related to caldera

a large crater caused by the violent explosion of a volcano that collapses into a depression

References in periodicals archive ?
The researchers successfully tested the new approach with data from the Campi Flegrei caldera in Italy, one of the Earth's highest-risk volcanoes, and it often looks like a lawn covered in molehills.
The researchers say they have now found the source of the magma that at that time fed into the region's caldera, the depression in the ground that looks like a crater and is often caused by a large volcanic eruption that empties magma from a chamber below ground and causes the Earth's crust above it to collapse into the empty space.
As one of the few high-raise structures in Tagaytay, more than five stories high, the hotel commands a beautiful view of the entire Taal Caldera. The deep blue, calm waters of the lake and the picturesque Taal Volcano can really be appreciated in their entirety from the hotel's balcony.
The above-mentioned examples express the following morphologic characteristics of volcanic calderas: 1) Caldera bottom is flat; 2) Only one outlet drainage is present; 3) Caldera wall is steep with declivity of about 3[degrees]; 4) The areas out of the caldera wall are covered by extensive pyroclastic deposits or lava flows with extension of more than 20 km; 5) The surface of these eruptive deposits has gentle outward declivity of about 3[degrees].
(20,21) This eruption resulted in formation of the Aira caldera with a diameter of 20 km.
Sesia Valley's unprecedented exposure of magmatic plumbing provides a model for interpreting geophysical profiles and magmatic processes beneath active calderas.
Calderas are volcanic depressions formed as near-surface crust subsides into magma reservoirs during eruptions.
Several sections are also devoted to volcanology, explaining how volcanic cones, calderas, and necks form, how lava is made, and why volcanoes erupt.
Some volcanoes have enormous craters, called calderas, which stretch for more than a mile in diameter.