earth science

Sonya Legg

Sonya Legg 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 Sonya Legg rather than just read about it. In short: Sonya Legg is a British oceanographer who is Director of the Center for Ocean Leadership. She studies the physical and dynamical processes of ocean circulation.

Key takeaways

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

Reference excerpt

Sonya Legg is a British oceanographer who is Director of the Center for Ocean Leadership. She studies the physical and dynamical processes of ocean circulation. Legg is involved with various initiatives to improve the representation of women in geoscience. She was Chair of the Mentoring Physical Oceanography Women to Increase Retention (MPOWIR) and is the co-chair of the Scientific Steering Group that directs the work of CLIVAR.

Early life and education Legg was born to a British father and a Sri Lankan mother and she was brought up far from an ocean in Zambia. She became interested in weather and climate as a child, and by the age of nine had her own weather station thermometers. She was a student at Wells Cathedral School and at the University of Oxford, where she studied physics and graduated with first class honours. She moved to London for her graduate research, and specialised in physical oceanography at Imperial College London. She was a postdoctoral fellow at the University of Colorado Boulder, where she worked in JILA. After two years in Boulder, Legg moved to the University of California, Los Angeles.

Research and career In 1997, Legg joined Woods Hole Oceanographic Institution. She was promoted to Associate Scientist in 2001, and awarded tenure in 2005. She moved to Princeton University in 2004. She was promoted to associate director of the Cooperative Institute for Climate Science in 2013. In 2023, Legg left Princeton to become the first permanent director of the Center for Ocean Leadership. Legg studies the dynamics of ocean circulation, primarily using numerical and theoretical approaches. She has investigated the processes that underpin ocean mixing, including the breaking of internal waves, deep convection and gravity currents. In 2015 she was one of the co-authors of an article published in Nature that looked at the internal waves in the South China Sea. The paper reported the existence of >0.2 km high breaking internal waves. She is the chair of the Scientific Steering Group which directs the work of CLIVAR.

Academic service Legg has sought to improve equality and diversity in the earth sciences. From 2014 to 2022, she was Chair of MPOWIR (Mentoring Physical Oceanography Women to Increase Retention), a United States-based initiative to mentor early career women in geosciences. She is a member of the Society for the Advancement of Chicanos/Hispanics and Native Americans in Science, the Princeton Women in Geosciences and the Earth Science Women's Network (ESWN).

Selected publications Matthew H Alford; Thomas Peacock; Jennifer A MacKinnon; et al. (1 May 2015). "The formation and fate of internal waves in the South China Sea". Nature. 521 (7550): 65–69. Bibcode:2015Natur.521...65A. doi:10.1038/nature14399. ISSN 1476-4687. PMID 25951285. Wikidata Q40965099. (erratum) Sonya Legg; Bruce Briegleb; Yeon Chang; et al. (May 2009). "Improving Oceanic Overflow Representation in Climate Models: The Gravity Current Entrainment Climate Process Team". Bulletin of the American Meteorological Society. 90 (5): 657–670. doi:10.1175/2008bams2667.1. ISSN 0003-0007. Wikidata Q58386374. Sonya Legg; Alistair Adcroft (November 2003). "Internal Wave Breaking at Concave and Convex Continental Slopes". Journal of Physical Oceanography. 33 (11): 2224–2246. Bibcode:2003JPO....33.2224L. doi:10.1175/1520-0485(2003)033<2224:iwbaca>2.0.co;2. ISSN 0022-3670. Wikidata Q58891791.

References

Illustrations

Worked examples

Example 1 — a first encounter with Sonya Legg

Start with the simplest possible case. Write down what Sonya Legg 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 Sonya Legg 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 Sonya Legg 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 Sonya Legg

In research: Sonya Legg 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 Sonya Legg 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: Sonya Legg is common in secondary-school and first-year university syllabi. It links to neighbouring topics Alumni of Imperial College London, Alumni of the University of Oxford, British oceanographers, so understanding it makes those chapters shorter.
In everyday life: Look for Sonya Legg 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 Sonya Legg in 20 minutes

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

Frequently asked questions

What is Sonya Legg in simple terms?

Sonya Legg is a British oceanographer who is Director of the Center for Ocean Leadership. She studies the physical and dynamical processes of ocean circulation.

Why does Sonya Legg 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 Sonya Legg?

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 Sonya Legg.