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What is an active volcano?
Is a volcano a dormant or extinct volcano?
Are volcanoes active or dormant?
Should a volcano be considered active if it erupts?
Oct 10, 2022 · If there is evidence for magma beneath the ground—for example, as indicated by magma-related seismicity and/or ground deformation, or by an active hydrothermal system—then the volcano should be considered “active” but currently “dormant,” regardless of the time since its last eruption.
Oct 19, 2023 · Volcanoes are classified as active, dormant, or extinct. Active volcanoes have a recent history of eruptions; they are likely to erupt again. Dormant volcanoes have not erupted for a very long time but may erupt at a future time. Extinct volcanoes are not expected to erupt in the future.
Volcanoes are found in three states - extinct, dormant and active. An extinct volcano will never erupt again. A dormant volcano has not erupted in 2000 years. An active volcano has erupted recently and is likely to erupt again.
- Active Volcanoes
- Dormant Volcanoes
- Extinct Volcanoes
Researchers do not currently agree on an official definition of active volcanoes. However, they are often considered to include geographic features which have had some activity within the last 10,000 years. In other words, active volcanoes are those that have erupted since the last ice age. The weakness with this definition, according to critics, i...
Dormant volcanoes are typically considered active volcanoes, because they have erupted since the last ice age, but are currently not erupting. A dormant volcano may erupt again at some point in the future. Some researchers suggest a volcano is dormant, rather than extinct, if there is some record of its past activity. Other researchers consider dor...
In contrast to the dormant volcano, an extinct volcano has not erupted over the last ice age, which ended approximately 10,000 years ago, and is not expected to erupt again in the future. Although an extinct volcano is believed to lack the ability to ever erupt again, several geographic and seismic records indicate that this assumption is not alway...
Sep 16, 2016 · Those that erupt regularly are called active, while those that have erupted in historical times but are now quiet are called dormant (or inactive).
May 13, 2010 · One of the simpler ways to answer is that an active volcano is one that has erupted since the last ice age (i.e., in the past ~10,000 years). That is the definition of active used by the Global Volcanism Program in their catalogs. A dormant volcano would then.
Nov 19, 2019 · The USGS defines a dormant volcano as any volcano that is not showing any signs of unrest but could become active again. California's Shasta is a dormant volcano by that definition (although could be considered "active" by some because it has erupted in historic times.)
