[Coral-List] drone used to photograph reefs
Risk, Michael
riskmj at mcmaster.ca
Sat Jun 29 01:48:03 UTC 2019
...and 50 years ago Terry Scoffin was flying camera-carrying kites over
reefs, 40 years ago we had CASSI multispectral imagery...there are
loads of techniques out there. We need to give up our fascination with
endless ways to describe the vanishing (how many different "reef
survey" schemes are out there?) and concentrate on stopping the
vanishing. This might just mean less focus on individual careers and
more on solutions. (If I sound cynical-I earned it.)
On Jun 28, 2019, at 5:20 PM, Douglas Fenner via Coral-List
<[1]coral-list at coral.aoml.noaa.gov> wrote:
So fantastic whiz-bang technology! Great!! We'd all like to be able
to
finally see what the reef looks like, each bump, hole, and coral
colony, on
our computer screens in the office or lab. Never mind that it is only
a
tiny patch of the world's reefs. Article didn't say how much 6 mo of
supercomputer time to crunch the data will cost. Surely vastly more
than
the $90,000 for the camera and $15,000 for the drone. How practical
will
that be for mapping the world's reefs? What major coral reef problem
will
be solved by this? Will it solve some major mystery about reefs? Will
it
save any reefs or corals? I didn't see an answer to that in the
article.
A person was quoted in this article as saying it is faster than having
someone go underwater and take a lot of pictures and stitch them
together.
But clearly not faster if you include computer time. Instead of 6 mo
of
supercomputer, you can do the computer processing on your own computer
in a
few hours with software that is dirt cheap compared to a supercomputer
for
6 mo. For the price of supercomputer for 6 mo, you could provide
funding
for reef management for a whole country for a year or more, I would
guess.
Or voluntary birth control for a whole small country for a year or so
(I'm
totally with you on that, Alina!).
I'm playing "devil's advocate" here.
Cheers, Doug
On Sat, Jun 29, 2019 at 7:04 AM Nicole Crane <[2]nicrane at cabrillo.edu>
wrote:
Just saw a presentation on this while in Guam. Super!
Nicole
On Fri, Jun 28, 2019 at 10:25 AM Douglas Fenner via Coral-List <
[3]coral-list at coral.aoml.noaa.gov> wrote:
Drone takes to the skies to image offshore reefs
[4]https://www.nature.com/articles/d41586-019-01988-9?WT.ec_id=NATUR
E-20190627&utm_source=nature_etoc&utm_medium=email&utm_campaign=2019
0627&sap-outbound-id=F6879643729B698E3E09146A03F27DA843F58E1B&mkt-ke
y=005056B0331B1ED782EEA4D8C7ECAFA3
open access
(Note the cost and that it may take 6 mo of supercomputer time to
analyze
the data from 5 sq m. Also doesn't say how deep it can image or how
image
degrades with depth.)
Cheers, Doug
--
Douglas Fenner
Ocean Associates, Inc. Contractor
NOAA Fisheries Service
Pacific Islands Regional Office
Honolulu
and:
Consultant
PO Box 7390
Pago Pago, American Samoa 96799 USA
A call to climate action (Science editorial)
https://science.sciencemag.org/content/364/6443/807?utm_campaign=toc
_sci-mag_2019-05-30&et_rid=17045989&et_cid=2840296
New book "The Uninhabitable Earth" First sentence: "It is much,
much
worse
than you think."
Read first (short) chapter open access:
https://www.pbs.org/newshour/arts/read-a-chapter-from-the-uninhabita
ble-earth-a-dire-warning-on-climate-change
Want a Green New Deal? Here's a better one.
https://www.washingtonpost.com/opinions/want-a-green-new-deal-heres-
a-better-one/2019/02/24/2d7e491c-36d2-11e9-af5b-b51b7ff322e9_story.h
tml?utm_term=.a3fc8337cbf8
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--
Nicole L. Crane
Faculty, Cabrillo College
Natural and Applied Sciences
[5]www.cabrillo.edu/~ncrane
Senior Conservation Scientist, Project co-lead
One People One Reef
onepeopleonereef.ucsc.edu
--
Douglas Fenner
Ocean Associates, Inc. Contractor
NOAA Fisheries Service
Pacific Islands Regional Office
Honolulu
and:
Consultant
PO Box 7390
Pago Pago, American Samoa 96799 USA
A call to climate action (Science editorial)
[6]https://science.sciencemag.org/content/364/6443/807?utm_campaign=toc
_sci-mag_2019-05-30&et_rid=17045989&et_cid=2840296
New book "The Uninhabitable Earth" First sentence: "It is much, much
worse
than you think."
Read first (short) chapter open access:
[7]https://www.pbs.org/newshour/arts/read-a-chapter-from-the-uninhabita
ble-earth-a-dire-warning-on-climate-change
Want a Green New Deal? Here's a better one.
[8]https://www.washingtonpost.com/opinions/want-a-green-new-deal-heres-
a-better-one/2019/02/24/2d7e491c-36d2-11e9-af5b-b51b7ff322e9_story.html
?utm_term=.a3fc8337cbf8
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References
1. mailto:coral-list at coral.aoml.noaa.gov
2. mailto:nicrane at cabrillo.edu
3. mailto:coral-list at coral.aoml.noaa.gov
4. https://www.nature.com/articles/d41586-019-01988-9?WT.ec_id=NATURE-20190627&utm_source=nature_etoc&utm_medium=email&utm_campaign=20190627&sap-outbound-id=F6879643729B698E3E09146A03F27DA843F58E1B&mkt-key=005056B0331B1ED782EEA4D8C7ECAFA3
5. http://www.cabrillo.edu/~ncrane
6. https://science.sciencemag.org/content/364/6443/807?utm_campaign=toc_sci-mag_2019-05-30&et_rid=17045989&et_cid=2840296
7. https://www.pbs.org/newshour/arts/read-a-chapter-from-the-uninhabitable-earth-a-dire-warning-on-climate-change
8. https://www.washingtonpost.com/opinions/want-a-green-new-deal-heres-a-better-one/2019/02/24/2d7e491c-36d2-11e9-af5b-b51b7ff322e9_story.html?utm_term=.a3fc8337cbf8
9. mailto:Coral-List at coral.aoml.noaa.gov
10. https://coral.aoml.noaa.gov/mailman/listinfo/coral-list
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