earth science

Volcanogenic lake

Volcanogenic lake is a earth science topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Volcanogenic lake rather than just read about it. In short: A volcanogenic lake is a lake formed as a result of volcanic activity. They are generally a body of water inside an inactive volcanic crater (crater lakes) but can also be large volumes of molten lava within an active volcanic crater (lava lakes) and waterbodies constrained by lava flows, pyroclastic flows or lahars in valley systems.

Key takeaways

Volcanogenic lake belongs to earth science; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect Volcanogenic lake to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of Volcanogenic lake from memory before moving on to harder problems.

Reference excerpt

A volcanogenic lake is a lake formed as a result of volcanic activity. They are generally a body of water inside an inactive volcanic crater (crater lakes) but can also be large volumes of molten lava within an active volcanic crater (lava lakes) and waterbodies constrained by lava flows, pyroclastic flows or lahars in valley systems. The term volcanic lake is also used to describe volcanogenic lakes, although it is more commonly assigned to those inside volcanic craters.

Volcanic crater lakes

Lakes in calderas fill large craters formed by the collapse of a volcano during an eruption. Examples:

Crater Lake, Oregon, United States Heaven Lake, China/North Korea Lake Toba, Sumatra, Indonesia

Lakes in maars fill small craters where an eruption deposited debris around a vent. Examples:

Lake Nyos, Northwest Region, Cameroon Lac Pavin, Puy-de-Dôme, France Soda Lakes, Nevada, United States

Lava lakes

These are some examples of rare lava lakes where molten lava in a volcano maintains relative equilibrium, neither rising to overflowing nor sinking to drain away.

Mount Erebus, Ross Island, Antarctica Erta Ale, Afar Region, Ethiopia Mount Nyiragongo, North Kivu, Democratic Republic of the Congo

Lava-dammed lakes

Lake Balık, Ağrı Province, Turkey Lake Disappear, North Island, New Zealand Garibaldi Lake, British Columbia, Canada Lake Güija, Guatemala/El Salvador

References

Further reading Delmelle, Pierre; Bernard, Alain (2000). "Volcanic Lakes". In Sigurdsson, Haraldur (ed.). Encyclopedia of Volcanoes. San Diego: Academic Press (published 1999). pp. 877–895. ISBN 978-0-12-643140-7. Christenson, B. W. (2000). Varekamp, Johan C.; Rowe, Gary L. Jr. (eds.). "Crater Lakes". Journal of Volcanology and Geothermal Research. 97 (1–4): 1–508. Bibcode:2000JVGR...97....1C. doi:10.1016/S0377-0273(99)00167-5. (entire volume about crater lakes) Pasternack, G. B.; Varekamp, J. C. (1997). "Volcanic lake systematics I. Physical constraints". Bulletin of Volcanology. 58 (7): 526–538. Bibcode:1997BVol...58..528P. doi:10.1007/s004450050160. S2CID 140598280. Kusakabe, Minoru, ed. (1994). "Geochemistry of Crater Lakes". Geochemical Journal. 28 (3): 137–306. doi:10.2343/geochemj.28.137. (entire issue about chemistry of crater lakes)

External links

IAVCEI Commission of Volcanic Lakes IAVCEI Commission of Volcanic Lakes: Some fundamentals about Crater Lakes The Science of Volcanic Lakes Volcanic Lakes of the World USGS Hawaiian Volcano Observatory: Water on volcanoes: heavy rain and crater lakes USGS Cascades Volcano Observatory: Volcanic Lakes The Science of Volcanic Lakes, Greg Pasternack, U. California Davis Crater Lake National Park documentation in Building Oregon: Architecture of Oregon & the Pacific Northwest archive World Volcanic Lakes Map Archived 2019-12-15 at the Wayback Machine

Illustrations

Worked examples

Example 1 — a first encounter with Volcanogenic lake

Start with the simplest possible case. Write down what Volcanogenic lake claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In earth science, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Volcanogenic lake before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Volcanogenic lake ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Volcanogenic lake

In research: Volcanogenic lake appears in earth science research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry: Engineering practice reuses Volcanogenic lake in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom: Volcanogenic lake is common in secondary-school and first-year university syllabi. It links to neighbouring topics Lakes by type, Volcanic landforms, Volcanogenic lakes, so understanding it makes those chapters shorter.
In everyday life: Look for Volcanogenic lake outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

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How to study Volcanogenic lake in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Volcanogenic lake means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
Explain Volcanogenic lake out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Volcanogenic lake in simple terms?

Why does Volcanogenic lake matter?

Because it connects several earth science ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Volcanogenic lake?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Volcanogenic lake.