خريطة الشارع المفتوحة
what are these oddly shaped circular features?
نُشِر بواسطة rayKiddy في 17 أكتوبر 2014 باللغة English آخر تحديث في 23 أكتوبر 2014I am editing in HOT task “#672 - Ebola Outbreak, Port Loko, Bombali districts, road network”, and I am seeing these odd somewhat circular features on the ground. This screenshot is about 600 ft (180 m) wide. Groups of them look a bit like honeycombs. What are these?
I suspect that they are man-made and are something agricultural, but I am also not seeing buildings nearby. So, it is not clear. The line is a tertiary road and probably not paved. Any guesses?
مناقشة
تعليق من BCNorwich في 18 أكتوبر 2014 في 07:10
Hi. A link to the area of your screenshot would help, also what is the image layer, please? Looking close at your image I would suggest that the larger blobs are palm trees you can just make out fronds. Each throwing a shadow to the SSW, the shadow of the trunks are also visible. As to the smaller lighter blobs they are shaded to the SSW side suggesting they are not high enough to cast a remote shadow on the ground. The blobs also seem to be equally spaced. Yes I think some form of agriculture. Regards
تعليق من Sanderd17 في 18 أكتوبر 2014 في 13:54
It could also be the work of termites. I don’t know which (if any) termites live in that region, but some sorts of termites are able to create surprisingly regular patterns in their mounds.
تعليق من GEOSPEX في 19 أكتوبر 2014 في 00:26
Hi rayKiddy, Several people in NYC for ebola mapping were in this tile today, and it did come up in discussion. Since this pattern shows up across this particular tile and others nearby, it seems likely that it is agriculturally related; that is, some type of crop on attended terrain. Exactly what that crop is, verdict still out.
تعليق من Firefishy في 19 أكتوبر 2014 في 12:49
It is most likely agricultural of some sort. At a guess each circle is land cleared to tend to a single plant… Cassava or other tuber.
تعليق من Firefishy في 19 أكتوبر 2014 في 12:53
Possible ground image: http://www.trust.org/item/?map=climate-change-adaptation-through-cassava-planting/
تعليق من Firefishy في 19 أكتوبر 2014 في 12:57
Better ground image: http://www.flickr.com/photos/79738474@N06/9509087914
تعليق من kucai في 20 أكتوبر 2014 في 01:21
my guess would be a cemetery. (really, not a spin on the ebola thing)
تعليق من Firefishy في 20 أكتوبر 2014 في 06:18
Could be… Image of graves: http://blogs.cfr.org/campbell/files/2011/01/africa-jos-graves-1_20_11.jpg
تعليق من Vincent de Phily في 20 أكتوبر 2014 في 08:43
I’ve usually mapped those as orchards. They’re a bit too low for palm trees. My guess is pineapple, but don’t quote me on that.
As for there being no paths to reach the area, remember that main access is by foot and is often not visible from imagery.
تعليق من rayKiddy في 22 أكتوبر 2014 في 22:05
Someone mentioned these in an e-mail to a HOT list. It is apparently cassava.
See: