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earth science

Lava channel

Lava channel 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 Lava channel rather than just read about it. In short: A lava channel is a stream of fluid lava contained within zones of static (i.e., solid and stationary) lava or lava levees. The initial channel may not contain levees per se, until the parental flow solidifies over what develops into the channel and creates natural levees.

Lava channel — main illustration
Lava channel — illustration

Key takeaways

  • Lava channel 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 Lava channel to a quantity you can measure, compute or draw — that is where exam questions come from.
  • Reproduce the core statement of Lava channel from memory before moving on to harder problems.

Reference excerpt

A lava channel is a stream of fluid lava contained within zones of static (i.e., solid and stationary) lava or lava levees. The initial channel may not contain levees per se, until the parental flow solidifies over what develops into the channel and creates natural levees. This initial levee allows for the building of a more complex levee and channel. As the lava flows through the channel, the elevation of the surface of the lava flow pulsates and lava can possibly flood the associated channel walls spilling out of the channel and over the existing levees, creating what is known as overflow levees. Overflow levees increase the height and width of the original levee. The lava that flows in lava channels is commonly basaltic in composition.

In fiction Lava channels are found throughout the 2002 video game The Elder Scrolls III: Morrowind under the Elvish name Foyadas, which features them as important routes on the volcanic island of Vvardenfell used by the native Ashlanders during the dry season, before they are filled with lava again during times of volcanic activity.

See also Lava tube

References

Ailsa Allaby and Michael Allaby. "lava channel." A Dictionary of Earth Sciences. 1999. Retrieved June 27, 2011 from Encyclopedia.com Harris, A., M, Favalli., F, Mazzarini, C, Hamilton., 2008. Construction dynamics of a lava channel. Bulletin of Volcanology. 71. (4):459-474.

External links A clearer photo of a lava channel and natural levees

Illustrations

Lava channel: Pāhoehoe lava flow on the Big Island of Hawaii The picture shows overflows from a main lava channel. The channel is crusting over with a v-shaped opening pointing upstream (top left). The main channel and overflows show the perched nature of this kind of lava channel. Red liquid lava is breaking through ephemeral levees at the overflows.
Pāhoehoe lava flow on the Big Island of Hawaii The picture shows overflows from a main lava channel. The channel is crusting over with a v-shaped opening pointing upstream (top left). The main channel and overflows show the perched nature of this kind of lava channel. Red liquid lava is breaking through ephemeral levees at the overflows.
Lava channel: Slightly eroded lava channel at Stóra-Eldborg, Reykjanes, Iceland, left over from Holocene eruptions. In the background the respective eruption fissure with craters and behind, a tuya from the Pleistocene.
Slightly eroded lava channel at Stóra-Eldborg, Reykjanes, Iceland, left over from Holocene eruptions. In the background the respective eruption fissure with craters and behind, a tuya from the Pleistocene.

Worked examples

Example 1 — a first encounter with Lava channel

Start with the simplest possible case. Write down what Lava channel 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 Lava channel 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 Lava channel 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 Lava channel

In research
Lava channel 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 Lava channel 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
Lava channel is common in secondary-school and first-year university syllabi. It links to neighbouring topics Geological process stubs, Lava channels, Volcanic landforms, so understanding it makes those chapters shorter.
In everyday life
Look for Lava channel 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 Lava channel in 20 minutes

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

Frequently asked questions

What is Lava channel in simple terms?

A lava channel is a stream of fluid lava contained within zones of static (i.e., solid and stationary) lava or lava levees. The initial channel may not contain levees per se, until the parental flow solidifies over what develops into the channel and creates natural levees.

Why does Lava channel 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 Lava channel?

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 Lava channel.

Tags

  • Geological process stubs
  • Lava channels
  • Volcanic landforms
  • Volcanism
  • Volcanology stubs

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