Earth's elastic thickness

[Fenerit]

Thanks to Aphyle2007 who sent to me the data set, this add-on shows the elastic thickness of Earth crust.



violet to red = lower to higher values.

http://marauder.webng.com/files/Elastic_Thickness.zip

[t00fri]

Massimo,

how is the Earth's "elastic thickness" precisely defined and how is it measured? What are the typical uncertainties?

Fridger

[Fenerit]

Massimo,

how is the Earth's "elastic thickness" precisely defined and how is it measured? What are the typical uncertainties?

Fridger

Well, sincerly, I had a table with long-lat and single value for. Unity of measure and errors aren't specified. Usually in S.I the elastic thickness (Te) is measured in Newton per metro (N m^2). I think Aphyle2007 if read this can be more precise on where and how he got the table. I've just "render" that, since he made a colored low-resolution map; and that table has been also a "game" for my Perl script.

EDIT LATER:
I think I've understood what you asking for. The values has been dived in six parts (from low to high in step 10) respectively colored .

EDIT EDIT LATER:
Read "since he made a colored low-resolution map" in "texturing" sense, not in details, that were like "fractal maps". Knowing the Celestians' demands...

[Fenerit]

One summary about the elastic thickness that is not specific to particular areas, is:

http://userpage.fu-berlin.de/~hajo/Bratislava/Files/Isostat/Isostat.html

[Chuft-Captain]

Also, something that many people are not aware of is that as well as ocean tides, the moon also causes a "solid tide", which means that the land surface at a given location can vary in height by up to 30?? cm during the course of a day.

I believe that GPS networks need to account for this effect.

CC

[Aphyle2007]

Sorry to be so long in posting a reply. In simplest terms, elastic thickness is referring to the thickness of the lithosphere (the crust plus the uppermost part of the mantle). In essence, this map is a proxy for plate thickness. So the Canadian Shield, which marks the core of what was Laurentia, shows considerable thickness. This is also some of the oldest lithosphere on Earth. In South America, the core of what was Amazonia shows considerable thickness, as well.

I seem to be having some difficulty finding where I got this data from, so I cannot answer for resolution or error factors. Sorry!

Aphyle2007

[Fenerit]

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I seem to be having some difficulty finding where I got this data from, so I cannot answer for resolution or error factors. Sorry!

Aphyle2007

Don't worry about that; new forum rules states the add-on must be declared finished when posted elsewhere. Thus here we can take some "degrees of freedom". My render was just a goal for exploring all Celestia's capability. Anyhow, if you have more datasets...