Explanation: I think this might be the correct term for afloramiento here (it does have a lot of meanings in different contexts).
Please see the pdf ref attached below, which is where I got the idea from (page 24)
According to the earth sciences dictionary, seepage is the slow by often steady flow of water between one water body and another. It is often used to describe the emergence of groundwater into a stream channel
Tis is a definition from a groundwater glossary, which you may find useful.
Seepage: (1) The slow movement of water into or out of a body of surface or subsurface water. (2) The loss of water by infiltration into the soil from a canal, ditch, lateral, watercourse, reservoir, storage facility, or other body of water, or from a field. http://www.groundwater.org/gi/gwglossary.html
-------------------------------------------------- Note added at 20 hrs 56 mins (2005-05-24 08:29:57 GMT) --------------------------------------------------
Thanks for all the suggestions. Having looked at the sources given and others, I think seepage is the closest. I think upwelling was potentially suitable too, but to my mind it had the connotation of the movement of larger volume of water over a shorter period of time than I think was meant in this particular case. 4 KudoZ points were awarded for this answer
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21 mins confidence:
outburst
Explanation: Oxford Dictionary
afloramiento m
a (Geol) outcrop
b (de sentimientos) outburst
ES 331/767 Lecture 16
... release of water from beneath the ice and from the Spiritwood aquifer. ...
was deposited by a hydrodynamic outburst of water from under the ice margin ...
academic.emporia.edu/aberjame/ice/lec16/lec16.htm - 17k - Cached - Similar pages
Mars Lakes :: Mars Astrobiology Magazine :: Search for Life on Mars
... by a single massive outburst of water, by a series of successive flows, ...
That snow could then have melted, recharging the regional aquifer and ...
mars.astrobio.net/news/article1.html - 32k - Cached - Similar pages
[PDF] Recent Lakes on Mars
File Format: PDF/Adobe Acrobat - View as HTML
... by a single massive outburst of water, by a series of successive flows, ...
the regional aquifer and contributing to the formation of the lakes whose ...
mars.astrobio.net/cgi-bin/mpdf.cgi?sid=1&ext=.pdf - Similar pages
NAI: News Stories
... by a single massive outburst of water, by a series of successive flows, ...
That snow could then have melted, recharging the regional aquifer and ...
nai.arc.nasa.gov/news_stories/news_detail.cfm?ID=230 - 35k - Cached - Similar pages
NAI News Article: Mars Lakes
... by a single massive outburst of water, by a series of successive flows, ...
That snow could then have melted, recharging the regional aquifer and ...
nai.arc.nasa.gov/news_stories/news_print.cfm?ID=230 - 17k - Cached - Similar pages
Images Suggesting Present-Day Sources of Liquid Water on Mars
... Such a layer is called an aquifer, and this one appears to be present less
... Each outburst of water from higher up on the crater slopes would have ... www.solarviews.com/eng/marspr3a.htm - 31k - Cached - Similar pages
Images Suggesting Present-Day Sources of Liquid Water on Mars
... Such a layer is called an aquifer, and this one appears to be present less
... Each outburst of water from higher up on the crater slopes would have ... www.solarviews.com/portug/marspr3a.htm - 30k - Cached - Similar pages
NAI: News Stories
... by a single massive outburst of water, by a series of successive flows, ...
That snow could then have melted, recharging the regional aquifer and ...
nai.nasa.gov/news_stories/news_detail.cfm?ID=230 - 35k - Cached - Similar pages
[XLS] Recent Lakes on Mars by Henry Bortman Nathalie Cabrol, who has ...
File Format: Microsoft Excel - View as HTML
... by a single massive outburst of water, by a series of successive flows, ...
That snow could then have melted, recharging the regional aquifer and ... www.astrobio.net/cgi-bin/xls.cgi?sid=38&ext=.xls - Similar pages
NAI: News Stories
... by a single massive outburst of water, by a series of successive flows, ...
That snow could then have melted, recharging the regional aquifer and ... www.nai.arc.nasa.gov/news_stories/ news_detail.cfm?ID=230 - 34k - Cached - Similar pages
The translation workplace 
