earth science

Ojin Seamount

Ojin Seamount 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 Ojin Seamount rather than just read about it. In short: Ōjin Seamount, also called Ōjin Guyot, named after Emperor Ōjin, 15th Emperor of Japan, is a guyot of the Hawaiian-Emperor seamount chain in the Pacific Ocean. It erupted 55 million years ago.

Key takeaways

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

Reference excerpt

Ōjin Seamount, also called Ōjin Guyot, named after Emperor Ōjin, 15th Emperor of Japan, is a guyot of the Hawaiian-Emperor seamount chain in the Pacific Ocean. It erupted 55 million years ago.

See also List of volcanoes in the Hawaiian – Emperor seamount chain

References

Bibliography Seach, John. "Ōjin Seamount - John Seach". Volcanic database. Volcano Live.com. Retrieved 2014-08-09. Jackson, Everett D.; Koizumi, Itaru; Kirkpatrick, R. James; Avdeiko, Gennady; Clague, David A.; Dalrymple, G. Brent; Karpoff, Anne-Marie; McKenzie, Judith; Butt, Arif; Ling, Hsin Yi; Takayama, Toshiaki; Green, H. Gary; Morgan, Jason; Kono, Masaru (1980). "Site 430: Ōjin Seamount" (PDF). Deep Sea Drilling Project Initial Reports. Initial Reports of the Deep Sea Drilling Project. 55: 45–76. doi:10.2973/dsdp.proc.55.103.1980. Clague, David A.; Dalrymple, G. Brent; Greene, H. Gary; Wald, Donna; Kono, Masaru; Kroenke, Loren W. (1980). "Bathymetry of the Emperor Seamounts" (PDF). Deep Sea Drilling Project Initial Reports. Initial Reports of the Deep Sea Drilling Project. 55: 845–849. doi:10.2973/dsdp.proc.55.140.1980. Watts, A. B.; Ribe, N. M. (December 10, 1984). "On Geoid Heights and Flexure of the Lithosphere at Seamounts" (PDF). Journal of Geophysical Research. 89 (B13): 11152–11170. Bibcode:1984JGR....8911152W. doi:10.1029/jb089ib13p11152. Archived from the original (PDF) on March 14, 2016.

Worked examples

Example 1 — a first encounter with Ojin Seamount

Start with the simplest possible case. Write down what Ojin Seamount 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 Ojin Seamount 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 Ojin Seamount 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 Ojin Seamount

In research: Ojin Seamount 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 Ojin Seamount 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: Ojin Seamount is common in secondary-school and first-year university syllabi. It links to neighbouring topics Eocene volcanoes, Guyots, Hawaiian–Emperor seamount chain, so understanding it makes those chapters shorter.
In everyday life: Look for Ojin Seamount 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 Ojin Seamount in 20 minutes

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

Frequently asked questions

What is Ojin Seamount in simple terms?

Ōjin Seamount, also called Ōjin Guyot, named after Emperor Ōjin, 15th Emperor of Japan, is a guyot of the Hawaiian-Emperor seamount chain in the Pacific Ocean. It erupted 55 million years ago.

Why does Ojin Seamount 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 Ojin Seamount?

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 Ojin Seamount.