Hi All
Michael Hayes asks about how bubbles could be deployed.
One possibility would be for a pair of wind-driven vessels to sail side
by side at, say, a kilometre separation, attached to each other by a
buoyant, streamlined tether.
The chord of the tether would be about 100 mm. In plan
Stephen,
This technology is already used for towing hydrophone streamers in geophys,
but it doesn't work quite like you suggest. There's no need for two boats,
and instead there's a paid of towed hydrofoils behind one boat, with the
support line tensioned between them. The low mass of the
Thank you both for the insight.
Yes, I do now recall the dual boat tether concept and I have some working
back ground in towing a long array of gear. From a pilot's point of view, I
can see an advantage of the dual boat/tether over the towed array. In that,
turning would be easier as well as
Another approach to the bubble generation effort, and one Russell has
suggested, is to take advantage of existing ships (of order 1000 to 10,000
commercial ships at sea on a given day) and to put bubble generators on
them‹perhaps doing so in a way that reduces their hull friction to make up
for
I have played with the idea of designing a prop which incorporates
ultrasonic cavities to produce bright water. But, the modeling is beyond my
capabilities. If it can be shown to the boat owners that such a prop would
generate more thrust by breaking up the cohesion of the water just forward
of
Andrew
I did think about paravanes on a single ship as you suggest but thought
that we could avoid the drag of the paravane by making two systems as
long as the paravane that you would have chosen, joining them together
and throwing away the two paravanes. Two boats is OK if the wake is
Hi Stephen
I think your concerns about pumping energies are misplaced. The mass of air
pumped would be pretty low as the bubbles are so small, so there won't be
big displacements, frictional losses, etc. My guess is that the energy to
overcome ship drag and the energy to form the bubbles will
Here is a short overview article which points to a possible use for bright
water if a long lasting variant can be developed.
Agulhas leakage fueled by global warming could stabilize Atlantic
overturning circulation: study
I ask for your patients!
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Here is a patent concerning a possible means for producing Stable (long
life) Bright Water.
http://www.patents.com/us-5531980.html
http://www.patents.com/us-5531980.htmlHere are key passages;
'The tensides or surfactants which are
Please help me understand the mechanics of Bright Water deployment. I have
spent many months living on the Bering Sea (in winter) and have piloted
150ft fishing vessels in that area for countless hours. I have watched the
sea continually produce white caps for as far as I could see for days and
Hi Mike and Andrew,
This is an interesting discussion. What about *direct* cooling of the ESAS
(East Siberian Arctic Shelf - which includes the East Siberian Sea), to try
to reduce methane emissions? We have to consider all possible methods of
reducing emissions here, since there is enough
I agree. This is an ideal area to test bright water, as it is isolated and
traditionally ice covered. It's also possibly ideal for sulphate aerosols
(due to the low tropopause and short residency time for particulates as a
result of the brewer dobson circulation). However, it is not certain that
mmacc...@comcast.net
*Date:* April 16, 2011 8:37:24 PM MDT
*To:* Geoengineering Geoengineering@googlegroups.com
*Cc:* Russell Seitz (2) russellse...@gmail.com
*Subject:* *Re: [geo] Re: for Geoe E group Bright Water the movie*
*Reply-To:* mmacc...@comcast.netmmacc...@comcast.net
Hi Andrew—On your
) russellse...@gmail.com
Subject: Re: [geo] Re: for Geoe E group Bright Water the movie
Reply-To: mailto:mmacc...@comcast.net mmacc...@comcast.net
Hi Andrew‹On your objection about the biology of bright water, I¹d like to
better understand your concern. How do you think the effect of the bubbles
@googlegroups.com, Russell Seitz
russellse...@gmail.com
Sent: Sunday, April 17, 2011 2:01:37 AM
Subject: Re: [geo] Re: for Geoe E group Bright Water the movie
Hi
Thanks for the +ve reception to my comments.
@Mike: Sometimes numeric analysis is the best way to investigate, and sometimes
it's not. I
Russell,
My comments below relate to your 'brightwater' proposal. Out of courtesy,
I've removed the thread - so I'm not re-posting your comments without
consent.
If bubble residency times are high, induced densities can be low. If
residency times are low, you'll have to greatly increase local
Sent from my iPad
On Apr 16, 2011, at 8:37 PM, Mike MacCracken mmacc...@comcast.net wrote:
Hi Andrew—On your objection about the biology of bright water, I’d like to
better understand your concern. How do you think the effect of the bubbles on
a clear day would compare to the effects of a
Geoengineering@googlegroups.com
Cc: Russell Seitz (2) russellse...@gmail.com
Subject: Re: [geo] Re: for Geoe E group Bright Water the movie
Reply-To: mmacc...@comcast.net
Hi Andrew—On your objection about the biology of bright water, I’d like to
better understand your concern. How do you
To clarify my comments, as asked:
I don't doubt that the technique is possible, but I am not convinced of its
practicality or ecosystem impact. A localized change in albedo may have
serious consequences for ecosystems, and the less long lived the bubbles
are, the more expensive the process and
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