biology

Saint Marcellus's flood

Saint Marcellus's flood is a biology 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 Saint Marcellus's flood rather than just read about it. In short: Saint Marcellus's flood or Grote Mandrenke (Middle Low German pronunciation: [ɣroːtə mandrɛŋkə]; Danish: Den Store Manddrukning, 'Great Drowning of Men') was an intense extratropical cyclone, coinciding with a new moon, which swept across the British Isles, the Netherlands, northern Germany, and Denmark (including Schleswig/Southern Jutland) around 16 January 1362, causing at least 25,000 deaths. The storm tide is a…

Key takeaways

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

Reference excerpt

Saint Marcellus's flood or Grote Mandrenke (Middle Low German pronunciation: [ɣroːtə mandrɛŋkə]; Danish: Den Store Manddrukning, 'Great Drowning of Men') was an intense extratropical cyclone, coinciding with a new moon, which swept across the British Isles, the Netherlands, northern Germany, and Denmark (including Schleswig/Southern Jutland) around 16 January 1362, causing at least 25,000 deaths. The storm tide is also called the "Second St. Marcellus flood" because it peaked on 16 January, the feast day of St. Marcellus. A previous "First St. Marcellus flood" had drowned 36,000 people along the coasts of West Friesland and Groningen on 16 January 1219.

Background and meteorological synopsis In the Medieval Warm Period, storms were stronger and sea levels were higher compared to the pre-industrial average due to higher temperatures. The storm arrived with northwesterly winds and a spring tide caused by the arrangement of the sun-earth-moon system, further increasing the sea levels. Dikes had been built to prevent flooding, but were in disrepair due to the Black Death. The constructed preventative measures decreased area able to be inundated while tidal variation increased through the early second millennium.

Impact An immense storm tide from the North Sea swept far inland from England and the Netherlands to Denmark and the German coast, breaking up islands, making parts of the mainland into islands, and wiping out entire towns and districts. These included Rungholt, said to have been located on the island of Strand in North Frisia, Ravenser Odd in East Yorkshire, and the harbour of Dunwich in Suffolk. Some areas of cultivated land were also turned into tidal flats. The storm destroyed a total of 44 villages. At least 25,000 people died, with estimates going as high as 100,000. This storm tide, along with others of like size in the 13th century and 14th century, played a part in the formation of the Zuiderzee, and was characteristic of the unsettled and changeable weather in northern Europe at the beginning of the Little Ice Age.

See also Floods in the Netherlands Storm tides of the North Sea

References

Illustrations

Worked examples

Example 1 — a first encounter with Saint Marcellus's flood

Start with the simplest possible case. Write down what Saint Marcellus's flood claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In biology, 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 Saint Marcellus's flood 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 Saint Marcellus's flood 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 Saint Marcellus's flood

In research: Saint Marcellus's flood appears in biology 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 Saint Marcellus's flood 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: Saint Marcellus's flood is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1360s in Denmark, 1360s in the Holy Roman Empire, 1362 in England, so understanding it makes those chapters shorter.
In everyday life: Look for Saint Marcellus's flood 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 Saint Marcellus's flood in 20 minutes

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

Frequently asked questions

What is Saint Marcellus's flood in simple terms?

Why does Saint Marcellus's flood matter?

Because it connects several biology 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 Saint Marcellus's flood?

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 Saint Marcellus's flood.