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ToastedCrumbs posted:The increased salinity in the air will be a major issue for farming across the world. Huh? Is this possibly an issue anywhere that isn't immediately near the ocean? I mean, barring potential changes in the location of the shoreline given rising sea levels.
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Sep 28, 2016 11:16
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Elizabethan Error posted:because salt is carried by rainclouds and the wind. coastal areas receive the majority of salt spray from the ocean, but it will still continue inland. additionally, as traditionally arid areas receive more rainfall, there'll be more salt returning to the sea over time. Internet Explorer posted:Rising seas will cause many of the worlds aquifers to be contaminated with saltwater. Neither of these make any sense to me. I'm not aware of any entire aquifers that will be contaminated with saltwater, merely those that are relatively close to the shoreline. Fresh water "floats" on top of salt water, which is why you can drill a well on an island and get potable water. Saltwater intrusion is certainly a problem, but it's very much localized to areas near the shore, or at worst very low-lying areas like coastal estuaries and whatnot. I've also seen nothing about increased salt spray having any appreciable effect on soil or agriculture. Soil salinity can be a problem with excessive use of fertilizers and whatnot, or in particularly arid regions when heavy irrigation is used, but neither of those have to do with air salinity/salt spray. I'm legitimately curious because my undergrad thesis was related to saltwater intrusion in domestic supply wells, and now I work partially in the agricultural field. Can anyone offer a link? Basic googling isn't turning anything up that's related to the salt spray/air salinity issue, at least in any way that would be a threat to world-wide agriculture. LogisticEarth fucked around with this message at 02:35 on Sep 29, 2016 |
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Sep 29, 2016 02:25
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Pellisworth posted:Also agree that salwater intrusion is a problem near-shore, but you've got continued pumping and depletion of fresh groundwater and isostasy helping salt water infiltrate depleted aquifers. It's an extreme problem near-shore where there's porous bedrock, which happens to be a lot of major metropolitan areas. Yeah, I kind of forget that there are loads of metro areas that get their water largely from production wells near the coast. I'm up in PA, and most metro areas around here get their water supplies from rivers/reservoir systems well-removed from the risk of saltwater intrusion.
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Sep 29, 2016 12:08
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