science

Jordan Transverse Mercator

Jordan Transverse Mercator 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 Jordan Transverse Mercator rather than just read about it. In short: Jordan Transverse Mercator (JTM) (Arabic: نظام تربيع ميركاتور الأردني المستعرض) is a projected coordinate system defined by the Royal Jordan Geographic Center (RJGC). This system is based on 6° belts with a central meridian of 37° East and a scale factor at origin (mo) = 0.9998.

Key takeaways

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

Reference excerpt

Jordan Transverse Mercator (JTM) (Arabic: نظام تربيع ميركاتور الأردني المستعرض) is a projected coordinate system defined by the Royal Jordan Geographic Center (RJGC). This system is based on 6° belts with a central meridian of 37° East and a scale factor at origin (mo) = 0.9998. The JTM is based on the Hayford ellipsoid adopted by the IUGG in 1924. No transformation parameters are presently offered by the government. However, Prof. Stephen H. Savage of Arizona State University provides the following parameters for the projection:

Jordan Transverse Mercator Geographic Coordinate System: GCS_International_1924 Datum: D:International_1924 Spheroid: International_1924 Axis: 6378388 Flattening: 297 Prime Meridian: Greenwich Prime Meridian Longitude: 0 Units: Degree Unit Scale Factor: 0.017453292519943295

Projection: Transverse Mercator False Easting: 500,000 False Northing: -3,000,000 Central Meridian: 37 Scale Factor: 0.9998 Central Parallel: 0 Units: Meter Scale Factor 1 Three-parameter transformation to WGS84 is: ΔX = –86 meters ΔY = –98 meters ΔZ = –119 meters Prof. Savage also offers software, ReprojectME!, which will convert coordinates between JTM and other systems. (See http://daahl.ucsd.edu/gaialab/# for more information.) The central meridian of 37° East is roughly midway between the extremes of Jordan: the Karameh Border Crossing with Iraq is close to 39° East, while the city of Aqaba on the Red Sea is close to 35° East.

Illustrations

Worked examples

Example 1 — a first encounter with Jordan Transverse Mercator

Start with the simplest possible case. Write down what Jordan Transverse Mercator 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 Jordan Transverse Mercator 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 Jordan Transverse Mercator 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 Jordan Transverse Mercator

In research: Jordan Transverse Mercator 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 Jordan Transverse Mercator 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: Jordan Transverse Mercator is common in secondary-school and first-year university syllabi. It links to neighbouring topics Cartography stubs, Geodesy, Geodesy stubs, so understanding it makes those chapters shorter.
In everyday life: Look for Jordan Transverse Mercator 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 Jordan Transverse Mercator in 20 minutes

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

Frequently asked questions

What is Jordan Transverse Mercator in simple terms?

Why does Jordan Transverse Mercator 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 Jordan Transverse Mercator?

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 Jordan Transverse Mercator.