Hi all,
RE: Methane and oxygen levels in sea
Oxygen depletion in Arctic waters deserves some more attention. A study
by Berkeley Lab and Los Alamos National Laboratory shows that, as global
temperature increases and oceans warm, methane releases from clathrates
would over time cause depletion of
Hi all,
Thanks Albert and thanks to Michael before you (about the trawling danger).
Albert, the problem of the ESAS (East Siberian Arctic Shelf) is that
it's shallow - about 8 metres deep I believe - so the microbes in the
water do not have time to convert the methane rising from the seabed.
There's been some discussion of using bubbling as a treatment for methane
excursions. Having studied this in some depth for a recent paper, I thought
I'd stick my tuppence in.
Albert is right that the ESS excursions are shallow. All cold-environment
excursions tend to be shallow as the
geoengineering has given rise to heated disputes, even death threats
Death threats? I'm certain we all have in mind one or more people we would
like to see go away, but I am not aware of any specific cases of death
threats being made against those involved in geoengineering. It is true that
That post was impressive, Sam.
I have an 18 acre mountain lake in the North Cascades and watch each year
how it goes though an analogy of what the Huttunen paper described. The lake
has a bog at one end and is rather shallow throughout. So, it constantly
produces methane. The lake has produced
Sam, I missed one of your points, an important one. 'bubbles could form an
insulating layer in between an ice-cap and warming water underneath the
cap. Ice is warmer than sea water at that interface. An oxygen
enriched gaseous layer could help the surface biota thrive under the
icemore
Hi folks,
I tried addressing the bubble issue in a response to Sam under the main
Lecture on Methane Hydrates... thread.
Michael
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Hi Folks,
John asked a few important questions and I also thank him for moving the
trawler problem forward.
As to nutrient question. I have found a correlation between 2 studies and
explored an idea for nutrient enhancement. Here is a copy of the post under
the thread Lecture on
I want to repost the main reply to Sam as I have realized it is loaded with
typos and some may be misleading.
That post was impressive, Sam.
I have an 18 acre mountain lake in the North Cascades and watch each year
how it goes though an analogy of what the Huttunen paper describes. The
lake
If anyone hasn't seen them, the Shakhova and Hinzman presentations in this
EGU report are well worth a look.
http://symposium.serdp-estcp.org/Technical-Sessions/1A
I know I'm a doomonger on the arctic, but the combination of polar
amplification, multiple positive feedbacks, and a paleoclimatic
Hi Folks,
Here is a TED talk by Dr. John Delaney on the
Oceans Observatories Initiative (OOI) This is the proper test site for any
new ideas proposed for the ocean methane issue.
http://www.ted.com/talks/john_delaney_wiring_an_interactive_ocean.html
Here is the construction schedule.
Thanks Michael, this kind of brainstorming is needed to find out what
further RD and testing is necessary.
As to micro-bubbles acting as insulation, this is perhaps applicable
where warm water of the Gulf Stream in the Atlantic Ocean is entering
the Arctic Ocean. Micro-bubbles could possibly be
Very scary indeed, Andrew.
For those who haven't seen it yet, here's a link to my earlier post on this:
http://geo-engineering.blogspot.com/2011/04/runaway-global-warming.html
That hopefully helps explain why the situation is so scary.
Cheers!
Sam Carana
On Sun, May 15, 2011 at 7:31 AM,
There's been some discussion about Stephen's ships recently. For an article
about alternative robot sailing boat designs which are fully operational,
you can see this link:
http://www.newscientist.com/article/mg21028126.400-sailbots-head-for-the-high-seas.html?
Andrew,
adding bubbles to methane rich waters will likely lift these waters to
the surface, and this increase and not reduce excursions of 'raw' methane
Thanks for adding that point, Andrew. Let me add that I have little
experience with the bubbles technology, so I do recommend further
Hi Folks,
I would like to respond to this intricate assessment by Andrew.
Albert is right that the ESS excursions are shallow. All cold-environment
excursions tend to be shallow as the clathrathe stability zone terminates
closer to mean sea level in cold waters. Therefore high latitude
Here is my reply to Andrew's assessment of the oxygenation concept (Sea
Worm).
https://groups.google.com/d/topic/geoengineering/1x25PF5audA/discussion
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Stephen,
Perhaps you could add a disclaimer to any such contributions, along
the following lines:
While efforts have been taken to make this contribution reflect
current insights into the technology at the time of writing,
development and deployment of such technologies and their effect and
Thanks Sam,
As to micro-bubbles acting as insulation, this is perhaps applicable
where warm water of the Gulf Stream in the Atlantic Ocean is entering
the Arctic Ocean. Micro-bubbles could possibly be added to the stream
close to the sea ice, to form an insulating layer underneath the ice,
when
Methane Tipping Point Early Warning System and Electromagnetic Mapping of
Hydrate Fields.
I was downloading the relevant papers from the U.of C. library and found
this 08 PhD dissertation on mapping hydrate fields.
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