[Geo4All] asking for help

[Christian Willmes]

I would not just cite it as a fact. When citing from Wikipedia, you 
always have to give context and a clear argument.

Though nowadays (at least the English, and as far as I see also the 
German version of) Wikipedia can be trusted quite well, because it is 
very much peer reviewed by the volunteers and admins. Just try to edit 
an existing article and write some non-sense into it. It will be a 
matter of minutes until it will be deleted... ;)

Best,
Christian

Am 02.11.18 um 11:17 schrieb labrinos at eled.auth.gr:
>
> Thank you very much Christian.
> That was really helpful.
> Is wikipedia a trusted site? I mean, can we proceed in the future with 
> a publication based on data from wikipedia?
>
> regards
> Nikos
>
>
> Παραθέτοντας από Christian Willmes <c.willmes at uni-koeln.de>:
>
>> Hello,
>>
>> This is an interesting question, which I asked myself also recently.
>>
>> I would prefer plate tectonics as the ground for defining continents, 
>> but this is not a Law. ;) In the according Wikipedia article [1] you 
>> can find a nice map, which clarifies at least the border between Asia 
>> and Africa, that is through the Red Sea and Jordan valley (east of 
>> Sinai). Arabia has its own plate, but geographically it is part of Asia.
>>
>> For Europe and Asia, this is more complicated, because Eurasia is one 
>> large tectonic plate. According to the German Wikipedia article [2], 
>> there is no international law based definition of this border. But 
>> you will find two maps showing borders in this article, based on 
>> different historic definitions.
>>
>> I would propose to define the inner Eurasian border based on River 
>> catchments or Hydrobasins. HydroSHEDS [3] draws the border between 
>> Europe and Asia, where the Volga (Europe) and the Ob (Asia) Basins 
>> meet. Further south, I would go west of Caspian Sea through the 
>> Caucasus to the Black Sea through the Bosporus... but this is not 
>> clearly defined as fa as I know?
>>
>> Best regards,
>> Christian
>>
>> [1] https://en.wikipedia.org/wiki/Plate_tectonics
>>
>> [2] https://de.wikipedia.org/wiki/Eurasien
>>
>> [3] https://www.hydrosheds.org/page/hydrobasins
>>
>> Am 02.11.18 um 08:33 schrieb labrinos at eled.auth.gr:
>>>
>>> Dear GeoForAll members,
>>>
>>> In the context of an undergraduate thesis, a student of mine is 
>>> looking for the official borders between continents.
>>> The "problem" rises between Europe and Asia, Asia and Africa.
>>> Can you show me references and/or links where I can find official 
>>> documents regarding the borders between these areas?
>>> I understand that in many cases it is a matter arranged between 
>>> countries (except Russia where the borders divide the country into 
>>> European and Asian part and Turkey where Vosporus separates the two 
>>> continents) because the borders between countries form the borders 
>>> between continents.
>>> I would appreciate any idea and help.
>>>
>>> Thank you very much
>>> Nikos Lambrinos
>>>
>>>
>> -- 
>> Dr. Christian Willmes
>> AG GIS & Fernerkundung      | GIS & RS Group
>> Geographisches Institut     | Institute of Geography
>> Universität zu Köln         | University of Cologne
>> Tel.: +49 (0)221 470 6234
>> http://www.geographie.uni-koeln.de/14126.html
>> http://www.sfb806.de
>> http://crc806db.uni-koeln.de
>> http://publons.com/a/1316706/
>> http://orcid.org/0000-0002-5566-6542
>>
>> _______________________________________________
>> GeoForAll mailing list
>> GeoForAll at lists.osgeo.org
>> https://lists.osgeo.org/mailman/listinfo/geoforall
>
>
>
-- 
Dr. Christian Willmes	
AG GIS & Fernerkundung      | GIS & RS Group
Geographisches Institut     | Institute of Geography
Universität zu Köln         | University of Cologne
Tel.: +49 (0)221 470 6234
http://www.geographie.uni-koeln.de/14126.html
http://www.sfb806.de
http://crc806db.uni-koeln.de
http://publons.com/a/1316706/
http://orcid.org/0000-0002-5566-6542