Nansen bottle: Difference between revisions
From Glossary of Meteorology
imported>Perlwikibot (Created page with " {{TermHeader}} {{TermSearch}} <div class="termentry"> <div class="term"> == Nansen bottle == </div> <div class="definition"><div class="short_definition">A device used...") |
imported>Perlwikibot No edit summary |
||
| Line 9: | Line 9: | ||
</div> | </div> | ||
<div class="definition"><div class="short_definition">A device used by oceanographers to obtain subsurface samples of [[seawater]].</div><br/> <div class="paragraph">The | <div class="definition"><div class="short_definition">A device used by oceanographers to obtain subsurface samples of [[seawater]].</div><br/> <div class="paragraph">The "bottle" is lowered by wire with its valves open at both ends. It is then closed in situ by allowing a weight (called a [[messenger]]) to slide down the wire and strike the reversing mechanism. This causes the bottle to turn upside down, closing the valves and reversing the reversing thermometers, which are mounted on the bottle in a special [[thermometer]] case. If, as is usually the case, a series of bottles are lowered, then the reversal of each bottle releases another messenger to actuate the bottle beneath it.</div><br/> </div> | ||
</div> | </div> | ||
Latest revision as of 14:43, 20 February 2012
Nansen bottle
A device used by oceanographers to obtain subsurface samples of seawater.
The "bottle" is lowered by wire with its valves open at both ends. It is then closed in situ by allowing a weight (called a messenger) to slide down the wire and strike the reversing mechanism. This causes the bottle to turn upside down, closing the valves and reversing the reversing thermometers, which are mounted on the bottle in a special thermometer case. If, as is usually the case, a series of bottles are lowered, then the reversal of each bottle releases another messenger to actuate the bottle beneath it.
