science

West Siberian Glacial Lake

West Siberian Glacial Lake is a 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 West Siberian Glacial Lake rather than just read about it. In short: The West Siberian Glacial Lake, also known as West Siberian Lake (Russian: Западно-Сибирское море) or Mansiyskoe Lake (Russian: Мансийское озеро, Mansi Lake), was a periglacial lake formed when the Arctic Ocean outlets for each of the Ob and Yenisei rivers were blocked by the Barents-Kara Ice Sheet during the Weichselian Glaciation, approximately 80,000 years ago. It was situated on the West Siberian Plain, and at i…

Key takeaways

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

Reference excerpt

The West Siberian Glacial Lake, also known as West Siberian Lake (Russian: Западно-Сибирское море) or Mansiyskoe Lake (Russian: Мансийское озеро, Mansi Lake), was a periglacial lake formed when the Arctic Ocean outlets for each of the Ob and Yenisei rivers were blocked by the Barents-Kara Ice Sheet during the Weichselian Glaciation, approximately 80,000 years ago. It was situated on the West Siberian Plain, and at its maximum extent the lake's surface area was more than 750,000 km2 which is more than twice that of the present-day Caspian Sea. It is theorized that because drainage to the Arctic Ocean basin (e.g. by the Ob and Yenisei Rivers) was prevented, the lake would eventually overflow to the Mediterranean Sea through a circuitous route that would include the Aral Sea, the Caspian Sea, and the Black Sea. This would have resulted in water from the Selenga River and Lake Baikal draining over a course of some 9,700 kilometres (6,000 mi), considerably longer than any river's course today.

See Mangerud et al. (2004) for diagrams and descriptions of the lake as well as postulated drainage patterns.

See also the Baikal seal, a freshwater seal of Lake Baikal probably related to Caspian seals. the Turgai Sea or West Siberian Sea, a Cretaceous to Eocene extension of the Tethys Sea separating Europe and Asia Paratethys

Notes

External links West Siberian Lake Overview

Illustrations

Worked examples

Example 1 — a first encounter with West Siberian Glacial Lake

Start with the simplest possible case. Write down what West Siberian Glacial Lake claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In 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 West Siberian Glacial 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 West Siberian Glacial 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 West Siberian Glacial Lake

In research: West Siberian Glacial Lake appears in 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 West Siberian Glacial 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: West Siberian Glacial Lake is common in secondary-school and first-year university syllabi. It links to neighbouring topics Former lakes of Asia, Glaciology, Glaciology stubs, so understanding it makes those chapters shorter.
In everyday life: Look for West Siberian Glacial 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 West Siberian Glacial Lake in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what West Siberian Glacial 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 West Siberian Glacial Lake out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is West Siberian Glacial Lake in simple terms?

Why does West Siberian Glacial Lake matter?

Because it connects several 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 West Siberian Glacial 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 West Siberian Glacial Lake.