NJScubaDoc
Contributor
Anyone know off hand where I can find salinity reports for different parts of the world? More specifically I'm interested in the ocean encompassing the Bahamas.
Thanks.
Thanks.
Salinity Reports
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The Bahamas are easy. Except for inland hypersaline lagoons and some tidal creeks on Andros, coastal salinity throughout the Bahamas Platform should be standard ocean strength, roughly around 35 ppt.
Do you mind telling us why you want to know? That's a rather unusual question. Are you planning on visiting some stromatolite areas? There are common on San Salvador.
Do you mind telling us why you want to know? That's a rather unusual question. Are you planning on visiting some stromatolite areas? There are common on San Salvador.
poke around some of the details on the NOAA buoys - although mostly in the US waters might point you to more info.
http://www.ndbc.noaa.gov/station_page.php?station=41012
http://www.ndbc.noaa.gov/station_page.php?station=41012
Stick finger in liquid then in mouth.NJScubaDoc:
No taste = Fresh clear water.
Slight salty taste = light salt.
So-so salty taste = heavier salt.
Heavy salty taste = heavy salt.
Eye crossing, cause to spit taste = Real heavy salt.
Salty taste followed by a lemony kick = Tequila
Salty taste with an ammonia odor = your head is in the urinal. (Quit sampling at that point and put your mask back on right.)
Gary D.
I wonder if the changes are enought to affect the amount of weight you put on your belt? I've dived the Atlantic, Pacific Indian oceans but haven't noticed any differences.
OP
NJScubaDoc
Contributor
Thanks!
Main reason I wanted to know is because I will be doing a live-a-board in March out of Freeport and was wondering if there were any salinity differences that would effect my weighting. Of course I'll do weight checks when I arrive, just food for thought though.
Main reason I wanted to know is because I will be doing a live-a-board in March out of Freeport and was wondering if there were any salinity differences that would effect my weighting. Of course I'll do weight checks when I arrive, just food for thought though.
Unless you are in cold seawater and thus wearing a great deal of stuff (i.e. 7mm suit), salinity changes will not be noticeable in coastal waters anywhere, except at the mouths of rivers. The difference in density between sea strength and freshwater is less than 4%.jiveturkey:
Persnickety lake/river divers may drop a pound or three of lead when they dive in seawater.
Penopolypants
Contributor
Huh, neato facts that NOAA has! It appears that the Puget Sound is higher, 42-44 ppt (parts per ?).
When divers here talk about how much weight they wear, other people on the board seem pretty horrified. At first I thought it was only the cold, but people on the northeast coast are diving in the same temps we are (~50 degrees) and don't seem to need as much lead. Perhaps our super salinity does have a pretty significant affect?
Maybe we're just the little Sound that Could.
When divers here talk about how much weight they wear, other people on the board seem pretty horrified. At first I thought it was only the cold, but people on the northeast coast are diving in the same temps we are (~50 degrees) and don't seem to need as much lead. Perhaps our super salinity does have a pretty significant affect?
Maybe we're just the little Sound that Could.
You should not see salinity-derived buoyancy changes for increases as small as that. The differences in water density are fractions of a fraction.Penopolypants:
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