<p>The simple explanation:
The International Terrestrial Reference (ITR) Frame <em>is</em> an Earth-centered, Earth-fixed (ECEF) frame, but with the axes of the ITR frame precisely specified taking into consideration the movements of the Earth's crust due to plate tectonics.</p>

<p><a href="https://confluence.qps.nl/qinsy/en/international-terrestrial-reference-frame-2014-itrf2014-29856813.html" rel="nofollow noreferrer">This website</a> may be useful.</p>

CC BY-SA 3.0
2018-03-15T15:47:38.780Z
İ know that it considers the tectonic movements, but does it make the ITR different from ECEF? If no, then ECEF also considers tectonic movements?
Tarlan Mammadzada
CC BY-SA 3.0
2018-03-15T15:52:06.340Z
@TarlanMammadzada - There is no such thing as **the** ECEF. The ITRF is **an** ECEF.
David Hammen
CC BY-SA 3.0
2018-03-15T15:45:07.157Z
2018-03-15T16:15:18.423Z
2018-03-15T16:15:18.423Z
Christo
<p>How does the <a href="https://en.wikipedia.org/wiki/International_Terrestrial_Reference_System" rel="nofollow noreferrer">International Terrestrial Reference frame</a> related to the <a href="https://en.wikipedia.org/wiki/ECEF" rel="nofollow noreferrer">Earth-centered, Earth-fixed frame</a>, as both of them rotate with the Earth?</p>

<frame-of-reference>
How does the ITRS frame related to ECEF frame?
Tarlan Mammadzada
# How does the ITRS frame related to ECEF frame?

(Asked by: username_0 on 2018-03-15)

How does the [International Terrestrial Reference frame](https://en.wikipedia.org/wiki/International_Terrestrial_Reference_System) related to the [Earth-centered, Earth-fixed frame](https://en.wikipedia.org/wiki/ECEF), as both of them rotate with the Earth?

**Tags:** frame-of-reference


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## 1 answers

### Answer by username_1 on 2018-03-15. Score: 4 | Accepted answer

The simple explanation:
The International Terrestrial Reference (ITR) Frame *is* an Earth-centered, Earth-fixed (ECEF) frame, but with the axes of the ITR frame precisely specified taking into consideration the movements of the Earth's crust due to plate tectonics.

[This website](https://confluence.qps.nl/qinsy/en/international-terrestrial-reference-frame-2014-itrf2014-29856813.html) may be useful.

> **Comments:**
> **username_0**: İ know that it considers the tectonic movements, but does it make the ITR different from ECEF? If no, then ECEF also considers tectonic movements?  
> **username_2**: @TarlanMammadzada - There is no such thing as **the** ECEF. The ITRF is **an** ECEF.  

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