science

Hartelkering

Hartelkering 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 Hartelkering rather than just read about it. In short: The Hartelkering (English: Hartel barrier) is a storm surge barrier in Spijkenisse, Netherlands. The barrier is part of the Europoortkering, itself part of the Delta Works project and is designed to close the Hartelkanaal (nl) in case of a storm surge.

Key takeaways

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

Reference excerpt

The Hartelkering (English: Hartel barrier) is a storm surge barrier in Spijkenisse, Netherlands. The barrier is part of the Europoortkering, itself part of the Delta Works project and is designed to close the Hartelkanaal (nl) in case of a storm surge.

Overview The barrier consists of two vertical lift gates, 49.3 metres (162 ft) and 98 metres (322 ft) in length. The gates have a height of 3 metres (9.8 ft) above NAP when closed. The water level at this location can become higher, but in order to prevent flooding of the Europoort-area the gates were designed to allow the water to overtop the gates in extreme situations. The amount of water would be too small to cause any problems in the protected area but it does limit the surgelevel in the unprotected areas. In the raised position the bottom of the gates is at 14 metres (46 ft) above NAP, slightly higher than the Hartelbrug (nl) next to the barrier. The barrier is equipped with a construction to fend off floating debris, which could damage the gates. The Hartelkering was constructed at the same time as the Maeslantkering as part of the Europoortkering, a system of levees in addition to the two flood barriers. The barrier was built with the expectation to close once per five to ten years. The decision-making algorithm that sequences storm surge-triggered events in the Maeslantkering is run entirely by computer.

8 November 2007 storm On 8 November 2007 a storm from the north-west hit the Dutch coast. A storm surge, high enough to start the barrier's closing procedure, occurred. The barrier was closed due to a storm surge for the first time since its construction. As the Oosterscheldekering and Maeslantkering storm surge barriers were also closed, the entire Dutch coast was protected against flooding for the first time since 1976. The closing procedure of the hartelkering started at 23.10h. The reopening took place on 9 November at 19.25h.

References

Illustrations

Worked examples

Example 1 — a first encounter with Hartelkering

Start with the simplest possible case. Write down what Hartelkering 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 Hartelkering 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 Hartelkering 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 Hartelkering

In research: Hartelkering 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 Hartelkering 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: Hartelkering is common in secondary-school and first-year university syllabi. It links to neighbouring topics Dams in South Holland, Delta Works, Flood barriers, so understanding it makes those chapters shorter.
In everyday life: Look for Hartelkering 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 Hartelkering in 20 minutes

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

Frequently asked questions

What is Hartelkering in simple terms?

Why does Hartelkering 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 Hartelkering?

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 Hartelkering.