Can objects thrown into the sea stop sinking before it reaches the bottom?
Can objects thrown into the sea stop sinking before it reaches the bottom?
(OP)
If we consider the bulk modulus/compressibility of seawater to the elastic modulus of many solids, it is alot smaller. My theory is then that if the sea is deep enough, an sinking object would reach neutral buoyancy an stop sinking before it reaches the bottom. Is there any real world examples for this, for example in the mariana trench?
RE: Can objects thrown into the sea stop sinking before it reaches the bottom?
RE: Can objects thrown into the sea stop sinking before it reaches the bottom?
Is this you just started reading "Going Postal" by the way? One of my favourites.
A.
RE: Can objects thrown into the sea stop sinking before it reaches the bottom?
The bathyscaphe Trieste made a 10,911-m dive into the Marianas Trench in the 1960. But, that was only because it's two-man cabin was specifically designed to withstand the crush pressure at that depth, which is on the order of 110 MPa. Note that it achieved this by separating the buoyancy means from the life-support means, which allowed the manned cabin to be designed to be a sphere, while the buoyancy mechanism was filled with a lower density fluid that was resistant to compression, which protected its container from being crushed.
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RE: Can objects thrown into the sea stop sinking before it reaches the bottom?
RE: Can objects thrown into the sea stop sinking before it reaches the bottom?
You can achieve something that looks similar by ballasting an object to be neutrally buoyant, then releasing it into a strong thermocline or halocline - imagine a submarine "riding a layer".
Perhaps one answer is that it's just too simplistic to assume that compressibility is the main thing that affects seawater's density as you change depth.
A.
RE: Can objects thrown into the sea stop sinking before it reaches the bottom?
There are instruments called density gradient columns that measure density by the depth where an object floats.
RE: Can objects thrown into the sea stop sinking before it reaches the bottom?
TTFN
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FAQ731-376: Eng-Tips.com Forum Policies forum1529: Translation Assistance for Engineers