Icelandic Ocean Topography Divided into Eight Sections

The basic elliptical form of the ocean topography can be used to elaborate further on its characteristics. First, we should have a look at the map http://www.data.menntanet.is/kennslupakkar/umhverfiislandsmida/umhverfi_islandsmida_rafbokin.pdf:

In general: The 200 meters depth margin of the bathymetry of Iceland (ocean topography) is elliptical. Here it is exaggerated by encircling the area with a rather thick black elliptical line. Then, numbers from 1-8 are added in the relevant sections, fitting the mathematics of the ellipse. Let us discuss the sections one by one.

1. The Reykjanes Ridge extends from this section. The shallow sea margin of about 200 meters depth is therefore both found extending from Iceland itself and the Reykjanes Ridge extendint to the SW from it. If we could subtract the direct addition caused by the Ridge, the remaining shallow area should probably be found within the elliptical form.
2. The western most border coincides with the ellipse, and south of that the margin seeks to combine with the Reykjanes Ridge.
3. This section is formed in a fairly accurate way, lacking a small fraction to be regarded perfectly fitting into the basic elliptical form. What is interesting about this part, is that it coincides with the Greenland-Iceland Ridge, It is a bit of a coincidence, but the same applies to section 7, where the connection between the elliptical shallow sea plateau connects with the Iceland-Faroe Ridge.
4. The light-coloured outer part of this section coincides quite well with our imaginary elliptical form. The N-S axis at its eastern most side coincides with the effect of Kolbeinsey Ridge.
5. This part differs from the elliptical form due to the effect of Kolbeinsey Ridge, as on both sides of it, the ocean becomes deeper than 200 meters. At the eastern part, where the effect of the Kolbeinsey Ridge is negligible , the margin reaches slightly farther out than the imaginary elliptical form.
6. This part follows the ellipse fairly closely, reaching a little farther out, just about to the same extent as its counterpart No. 3 does not reach the elliptical limit.
7. As pointed out before, this section coincides with the Faroe-Icelandic Ridge. It fits almost perfectly to the elliptical form, along with part 8.
8. This part follows our imaginary elliptical form almost perfectly. Only its southern most part seem to lack a bit. As said before, parts 7 and 8 make up the most perfect quarter of the ellipse.

In this way, the discrepancy between the theoretical elliptical form and real mapping of the Icelandic ocean topography is partly explained. Without explanation, the resemblance between the mathematical form and real mapping is quite apparent, though. So why is this pointed out here and not by someone else? The elliptical form is a really interesting fact to mention. The reason is probably due to the fact that this would just be for the fun of it, if resemblance to the combined function of the two ocean Ridges, Reykjanes Ridge and Kolbeinsey Ridge, along with the volcanic zones, was not found to play a role. It has been dealt with in former posts.