[Coral-List] OTEC around coral reefs

[Dennis Hubbard]

Doug:

When we made Alvin dives off the north coast of St. Croix, the temperature
registered on the sub's thermistor read WELL above freezing until we were
WELL beyond 2000 meters. I can't easi;y get to my notes due to Covid, but
the temperatures weren't particularly low (or the nutrients particularly
high - Susan Williams participated in the project) until we got a lot
deeper (remember - no Gulf Stream).

Denny

On Tue, Jun 23, 2020 at 8:18 AM Douglas Fenner via Coral-List <
coral-list at coral.aoml.noaa.gov> wrote:

> I bet if you go deep enough (likely 600 feet or more) it will be close to
> freezing.  That's true of most all of the world's oceans, so far as I know
> (with exceptions such as shallow continental seas such as the
> Arabian/Persian Gulf which has a maximum depth of around 295 feet).
>
> On Mon, Jun 22, 2020 at 3:10 AM Melbourne Briscoe via Coral-List <
> coral-list at coral.aoml.noaa.gov> wrote:
>
> > "Cold" water near Bonaire isn't very cold. Efficiency is going to be very
> > low.
> >
> > On Thu, Jun 18, 2020 at 2:22 PM Alina Szmant via Coral-List <
> > coral-list at coral.aoml.noaa.gov> wrote:
> >
> > > Eric: with deep cold water comes nutrients.  Be concern about local
> algal
> > > blooms.
> > >
> > >
> > >
> > > Sent from my Samsung Galaxy smartphone.
> > >
> > >
> > >
> > > -------- Original message --------
> > > From: "Meesters, Erik via Coral-List" <coral-list at coral.aoml.noaa.gov>
> > > Date: 6/17/20 8:36 AM (GMT-05:00)
> > > To: coral-list at coral.aoml.noaa.gov
> > > Subject: [Coral-List] OTEC around coral reefs
> > >
> > > Hi all,
> > > There are now plans for an OTEC facility on Bonaire.
> > >
> > > It basically means pumping up cold water from the deep to cool things
> and
> > > discharging warmer water (often shallower).
> > >
> > >   *   Here are some examples: https://nelha.hawaii.gov/
> > >   *   http://otecokinawa.com/en/OTEC/WaterUses.html
> > >
> > > I can think of a lot of doomsday scenarios, but I'm looking for
> reports,
> > > assessments, thoughts, advice.
> > > Does anyone have experiences with OTEC facilities in the neighbourhood
> of
> > > coral reefs?
> > > it's often presented as the goose with the golden eggs, and governments
> > > seem to fall for it easily, but apart from glossy sales talks, I can't
> > find
> > > objective reports or EIAs.
> > > Thanks for your responses.
> > > Best wishes,
> > > Erik Meesters
> > > Wageningen Marine Research
> > >
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>
>
> --
> Douglas Fenner
> Lynker Technologies, LLC, Contractor
> NOAA Fisheries Service
> Pacific Islands Regional Office
> Honolulu
> and:
> Consultant
> PO Box 7390
> Pago Pago, American Samoa 96799  USA
>
> "mitigating climate change is the critical wedge to set coral reefs on a
> recovery trajectory"  Duarte et al 2020 Rebuilding marine life Nature
>
> "Already, more people die  <http://www.nws.noaa.gov/om/hazstats.shtml>from
> heat-related causes in the U.S. than from all other extreme weather
> events."
>
>
>
> https://www.npr.org/2018/07/09/624643780/phoenix-tries-to-reverse-its-silent-storm-of-heat-deaths
>
>
> Even 50-year old climate models correctly predicted global warmng
>
> https://www.sciencemag.org/news/2019/12/even-50-year-old-climate-models-correctly-predicted-global-warming?utm_campaign=news_weekly_2019-12-06&et_rid=17045989&et_cid=3113276
>
> "Global warming is manifestly the foremost current threat to coral reefs,
> and must be addressed by the global community if reefs as we know them will
> have any chance to persist."  Williams et al, 2019, Frontiers in Marine
> Science
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-- 
Dennis Hubbard
Chair, Dept of Geology-Oberlin College Oberlin OH 44074
(440) 775-8346

* "When you get on the wrong train.... every stop is the wrong stop"*
 Benjamin Stein: "*Ludes, A Ballad of the Drug and the Dream*"