earth science

Ocean data acquisition system

Ocean data acquisition system 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 Ocean data acquisition system rather than just read about it. In short: An ocean data acquisition system (ODAS) is a set of instruments deployed at sea to collect as much meteorological and oceanographic data as possible. With their sensors, these systems deliver data both on the state of the ocean itself and the surrounding lower atmosphere.

Key takeaways

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

Reference excerpt

An ocean data acquisition system (ODAS) is a set of instruments deployed at sea to collect as much meteorological and oceanographic data as possible. With their sensors, these systems deliver data both on the state of the ocean itself and the surrounding lower atmosphere. The use of microelectronics and technologies with efficient energy consumption allows to increase the types and numbers of sensor deployed on a single device.

Definition According to Intergovernmental Oceanographic Commission and World Meteorological Organization (WMO), "ODAS means a structure, platform, installation, buoy, or other device, not being a ship, together with its appurtenant equipment, deployed at sea essentially for the purpose of collecting, storing or transmitting samples or data relating to the marine environment or the atmosphere or the uses thereof."

Use Each hour, the data gathered by the system is transferred to the WMO's Global Telecommunications System by a geostationary satellite after having gone through a number of quality checks. An estimated 1,200 buoys provide real time data on sea temperature 27,000 times a day, while about 600 buoys report the sea level pressure 14,000 per day. Real-time data with information on the maritime environment can then be used for forecasts of physical states like weather, ocean currents or wave conditions which, in turn, may serve to warn seafarers of unfavourable conditions in the area.

ODAS types

ODAS can be mounted on the following structures:

Lighthouses Lightvessels Towers Offshore platforms Buoys ODAS buoys are not navigational aids but have been included into the IALA Maritime Buoyage System. The structures have a fixed geographical position.

Data Data gathered by an ODAS may include the following parameters:

Air temperature Atmospheric pressure at sea level Wind direction Wind speed including gusts Sea state Wave height Sea surface temperature Barometric pressure Visibility Relative humidity

Disadvantages ODAS buoys are expensive to obtain and need to be deployed by specialised vessels.

References

Illustrations

Worked examples

Example 1 — a first encounter with Ocean data acquisition system

Start with the simplest possible case. Write down what Ocean data acquisition system 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 Ocean data acquisition system 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 Ocean data acquisition system 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 Ocean data acquisition system

In research: Ocean data acquisition system 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 Ocean data acquisition system 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: Ocean data acquisition system is common in secondary-school and first-year university syllabi. It links to neighbouring topics Meteorological instrumentation and equipment, Oceanographic instrumentation, so understanding it makes those chapters shorter.
In everyday life: Look for Ocean data acquisition system 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 Ocean data acquisition system in 20 minutes

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

Frequently asked questions

What is Ocean data acquisition system in simple terms?

Why does Ocean data acquisition system 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 Ocean data acquisition system?

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 Ocean data acquisition system.