# Sigma Islands

> Mediated Wiki article. Canonical URL: https://mediated.wiki/source/Sigma_Islands
> Markdown URL: https://mediated.wiki/source/Sigma_Islands.md
> Source: https://en.wikipedia.org/wiki/Sigma_Islands
> Source revision: 1296069139
> License: Creative Commons Attribution-ShareAlike 4.0 International (https://creativecommons.org/licenses/by-sa/4.0/)

{{Short description|Island group in Palmer Archipelago, Antarctica}}
{{Use dmy dates|date=April 2022}}
{{Infobox islands
| name             = Sigma Islands
| image_name       =
| image_caption    =
| image_map        = Sigma Islands, Melchior Islands, BAT.svg
| image_map_size   = 
| image_map_caption = 
| map              = Antarctica
| pushpin_map_caption = Location in Antarctica
| nickname         =
| location         = [Antarctica](/source/Antarctica)
| coordinates      = {{Coord|64|16|S|62|55|W||display=inline,title}}
| archipelago      = [Melchior Islands](/source/Melchior_Islands),<br />[Palmer Archipelago](/source/Palmer_Archipelago)
| total_islands    =
| major_islands    =
| area_km2         =
| length_km        =
| width_km         =
| highest_mount    =
| elevation_m      =
| population       = Uninhabited
| population_as_of =
| density_km2      =
| ethnic_groups    = None
| country          = None
| treaty_system    = [Antarctic Treaty System](/source/Antarctic_Treaty_System)
}}
The '''Sigma Islands''' are a group of small islands and rocks which lie {{convert|3|nmi|km|disp=flip|abbr=on}} north of [Eta Island](/source/Eta_Island_(Palmer_Archipelago)) and mark the north limit of the [Melchior Islands](/source/Melchior_Islands), in the [Palmer Archipelago](/source/Palmer_Archipelago). The name, derived from the 18th letter of the Greek alphabet, appears to have been first used on a 1946 Argentine government chart following surveys of these islands by Argentine expeditions in 1942 and 1943, The Island was discovered by The Argentinian navigator Vitór Martinez And a group of other navigators in 1874. <ref>[https://geographic.org/geographic_names/antname.php?uni=13818&fid=antgeo_121/ Sigma Islands]</ref>

== See also ==
* [Composite Antarctic Gazetteer](/source/Composite_Antarctic_Gazetteer)
* [List of Antarctic and sub-Antarctic islands](/source/List_of_Antarctic_and_sub-Antarctic_islands)
* [List of Antarctic islands south of 60° S](/source/List_of_Antarctic_and_sub-Antarctic_islands)
* [SCAR](/source/Scientific_Committee_on_Antarctic_Research)
* [Territorial claims in Antarctica](/source/Territorial_claims_in_Antarctica)

==References==
<references/>

== External links ==

{{usgs-gazetteer|id=13818}}

Category:Islands of the Palmer Archipelago

{{PalmerArchipelago-geo-stub}}

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Adapted from the Wikipedia article [Sigma Islands](https://en.wikipedia.org/wiki/Sigma_Islands) by Wikipedia contributors ([contributor history](https://en.wikipedia.org/wiki/Sigma_Islands?action=history)). Available under [Creative Commons Attribution-ShareAlike 4.0 International](https://creativecommons.org/licenses/by-sa/4.0/). Changes may have been made.