User talk:Oggmus

Welcome to Wikimedia Commons, Oggmus!

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-- Wikimedia Commons Welcome (talk) 11:05, 4 January 2014 (UTC)

Question

Hi Oggmus: Where are you getting such lovely images and basemaps for your series of uploads on the Crater? Also could you go back through your pictures and any one which has red linking on the category, please find and fix the category? Thank you so much! You can reply here, I will see it! Ellin Beltz (talk) 18:51, 6 March 2014 (UTC)

Hi Ellin Beltz: I drew these maps using CorelDraw, drawing on information in various geology books and atlases, or ideas gleaned from pictures or diagrams in Wikipedia (e.g. the article on "Impact craters") None were straight copies of previously published diagrams, but were always put together using information from several sources. I am not sure what the "red-linking" that you refer to means, and would not know how to fix it. Would you be able to do the repair work for me? Does this answer your questions adequately? Oggmus (talk) 03:20, 18 March 2014 (UTC)

Hi Ellin Beltz: How does one get images (created by myself, but replaced by more accurate or informative ones) removed from Wikimedia Commons? I have 2 which I would like to have removed, as they are not used anywhere (and should not be used): "Vredefort crater cross section.png" and Geolological earth timeline.gif". (Postscript: I think I have discovered how to do this myself. Let's see if it works) Oggmus (talk) 09:11, 1 April 2014 (UTC)

I notice that all my other uploads are properly categorized. If you were responsible for doing that, I would like to thank you very much for do so. Kindest regards Oggmus (talk) 08:52, 1 April 2014 (UTC)

It was probably a combination of me and other editors, but I'll be happy to take all the praise (: . I see you have figured out how to speedy the pictures which should be gone. Please let me know if I can be of any other help? Ellin Beltz (talk) 21:37, 1 April 2014 (UTC)

Hi Ellin Beltz

I have just uploaded another illustration "Lowveld map.png". But I have not yet figured out how one categorizes these contributions. Would you mind having a look to see into what categories it would best and most appropriately fit. Oggmus (talk) 12:07, 8 April 2014 (UTC)

Hi User:Oggmus! I put that one in Category:Maps of South Africa which I got to by clicking on Category:South Africa and then Category:Geography of South Africa and finally to maps... If there's an even finer category into which it would fit better, you can please move it to the finer category, or ask for help... the way to change categories is to edit the page (see the image to left for where the edit button is located) and just type the new category name in the bottom between [[ ]] square brackets. Please do not hesitate to ask for any help ever on Commons, it's so great to have a user who cares about where his stuff ends up! Ellin Beltz (talk) 17:36, 8 April 2014 (UTC)

Thank you very much for this advice. I tried to use it while loading "Map of Vredefort Dome.jpg" but when I type in [[Category:Geography}} I do not get given the entire list of countries - only those starting with "A"! So I did my best and hope that it does end up in a sensible category. Oggmus (talk) 13:39, 13 April 2014 (UTC)

I put that one in Category:Maps of South Africa, too! Meanwhile, watch the [[ brackets ]]. I see above you typed [[Category:Geography}}. Note the end ones are different and that will make an error. Please don't hesitate to ask for more help as needed. I like your maps! Ellin Beltz (talk) 18:05, 13 April 2014 (UTC)

Category:Geology of the Cape Peninsula

Hi Oggmus, please use this category for images like File:West-East cross section of Cape Peninsula.jpg concerning the geology of the Cape Peninsula. -- Ies (talk) 14:57, 8 January 2015 (UTC)

 Done

Agulhas current

Benguela and Agulhas Currents

Hi Oggmus, I am trying to put together an image comparing the Agulhas current in winter and summer. Where did you get the data for this file? , and do you know of suitable seasonal data? Cheers, · · · Peter (Southwood) ^(talk): 09:27, 25 February 2015 (UTC)

Hi Peter

Sorry, I have only just realised I had a message on this page. (It does not show up if you do not go on to WikiMedia Commons.)

I used "The Living Shores of Southern Africa" by Margo and George Branch, Struik Publishers 1983 (ISBN 089771159) pp. 14 and 16; as well as "The Weather and Climate of Southern Africa" by PD Tyson and RA Preston-Whyte, Oxford University Press 2013 (ISBN 9780195718065) pp. 221-223, as sources. I am sure there are better pictures, especially higher resolution satellite photographs, but there was enough information in these two sources for me to draw the diagram I did. Neither of these two sources mention major differences in the flow of the Benguela and Aghulas Currents with the seasons, though they must exist (to some extent). I hope this answers your question. Please let me know if you find information the seasonal variation of these currents. Oggmus (talk) 15:02, 3 March 2015 (UTC)

Hi Oggmus, Thanks for the reply. I have Living Shores, will take a look. The seasonal variation is thought to cause the inshore counterflow of colder water which is connected with the annual sardine run. I found a nice video from NASA showing the changes over about a year in the Agulhas and a few other currents, which I will probably be able to use in some way. Found while looking for images to work from: http://www.gfdl.noaa.gov/visualizations-oceans About halfway down the page Title: Surface speed. Pretty false colour image of Agulhas current sst in low and hi-res png, and various animations, quite big files. You can see the counterflow develop in late winter/spring. Cheers, · · · Peter (Southwood) ^(talk): 15:25, 3 March 2015 (UTC)

Most interesting. If you find out more, please let me know, and MORE IMPORTANTLY get it on to the Agulhas page. Oggmus (talk) 21:10, 3 March 2015 (UTC)

OK. · · · Peter (Southwood) ^(talk): 05:40, 4 March 2015 (UTC)

I have just re-read both books on the currents along the South African coast. Only "The Living Shores" makes mention of an inshore countercurrent to the Agulhas Current in these words:

Close inshore, cooler pockets of water often flow parallel to the coast, but in a direction opposite to the Agulhas Current. On the south coast this countercurrent is more frequent, but off the Natal coast it is squeezed close to the shore and is often overpowered by the Agulhas, so that it is less predicatble. Its importance in the life-cycles of several species is gradually coming into focus. For instance it seems probable that the famous 'sardine run' on the Natal coast is due to sardines following this inshore countercurrent...

The "Weather and Climate" book only mentions a slow deep countercurrent to the Agulhas at 1500-3500 m below the surface.

There is nothing about seasonality in either book. I hope you find out more about this interesting topic. Oggmus (talk) 07:00, 4 March 2015 (UTC)

The sardine run is distinctly seasonal (May through July, most years), as described in the article, and the seasonal variation in the current can be seen from the NOAA video. Connecting the two appears to be the subject of ongoing research. I will add any useful information to at least one of the relevant articles, and upload any images I create to commons, as I usually do. · · · Peter (Southwood) ^(talk): 08:57, 4 March 2015 (UTC)

Commons:FAQ

Hi, I assume that you got the deletion request for your File:Witwatersrand_outcrops.jpg partially wrong, you hit Commons:FAQ among others. I'll try to fix this. Actually you can overwrite pictures uploaded by you, if you click on "upload new version". But now, after you uploaded a new version with a new name File:Witwatersrand_outcrops 2.jpg, the file with the old name can be of course deleted. But not the FAQ. –Be..anyone (talk) 16:11, 15 March 2015 (UTC)

Thank you very much. Is the "Upload new version" on the page with all my uploads or is it an option when one uses the Upload Wizard? I have never found a page that makes any of this clear - and I do it too infrequently to remember from one occasion to the next! (old age creeping in?) Oggmus (talk) 08:32, 17 March 2015 (UTC)

Sorry I have just noticed that the 'speed delete' tag is provided at the top of *THIS page*, which makes me very happy to have it on hand! Oggmus (talk) 08:44, 17 March 2015 (UTC)

The "Upload a new version of this file" link is found on most Commons file description pages, always at the bottom of the "File history" section. If it's not there, there are two common reasons: (i) the page is protected against upload; (ii) you're not viewing the Commons file description page but the Wikipedia copy of that.

To see what I mean for (ii), compare File:Witwatersrand outcrops 2.jpg, which is on Commons, with w:File:Witwatersrand outcrops 2.jpg, which is the Wikipedia copy. They're very similar, but the logos at top left differ; the Wikipedia one has a box like this; and the Commons one has a "Upload a new version of this file" link; there are other differences too, such as the "File usage" section(s). If you're viewing the Wikipedia copy, it's easy to get to the true Commons file description page: in the box that's only on the Wikipedia page, find the link titled "description page there" and click it. --Redrose64 (talk; at English Wikipedia) 12:23, 20 March 2015 (UTC)

Thank you very much. I have looked at these options and think I now know how it is done (in fact, I have used this facility to upload a better version of the "Vredefort_crater_cross_section_2.png" diagram, and was vastly impressed at how easy it was compared with what I had been doing). I'm very grateful to you. Oggmus (talk) 13:21, 21 March 2015 (UTC)