Showing posts with label ocean. Show all posts
Showing posts with label ocean. Show all posts

Friday, May 13, 2011

Oceans: More Complex and Resilient than We Know

Wiki

Popular culture is soaking in the dogma that "humans are killing the oceans" and "man is destroying the planet." But science is so abysmally ignorant about what is actually happening in the seas and on land, that the faux environmentalist message of doom is based upon a blooming ignorance, and little else.

Take a recent declaration of "plankton apocalypse" by researchers from Dalhousie University in Nova Scotia. Faux environmentalists seized on the single, unsubstantiated report as confirmation that the end of the world is near. More knowledgeable and intelligent persons knew -- or at least sensed -- that the Dalhousie report was hagwash. And so it seems to have been. Much of modern published "science" dealing with the environment and climate is unmitigated hogwash, albeit politically correct.

But there is much valid and valuable science to be learned from the oceans, if one can work objectively and without prejudicial biases.
Physorg
"The big mystery about bacteria is what they are doing in nature," Whitman said. "The organisms metabolize compounds for their own needs. We need to understand what they are getting out of it to understand what it means for the ocean, and now it will be possible to look at the environmental importance of this process and how it's regulated." That will help to answer the "why" of the two sulfur fates. _Physorg
Notice that the U. of Georgia scientists are microbiologists -- not "climatologists." Although the microbiologists link their study to climate -- for reasons of funding among others -- their results help to expose the abysmal ignorance of climate "science" with regards to the oceans and cloud formation.
SeaFriends

Scientists have discovered that marine diatoms, tiny phytoplankton abundant in the sea, have an animal-like urea cycle, and that this cycle enables the diatoms to efficiently use carbon and nitrogen from their environment.

The researchers, from the J. Craig Venter Institute (JCVI) and other institutions, published their findings in this week's issue of the journal Nature.

The team, led by lead author Andrew Allen from JCVI and co-author Chris Bowler, Institute of Biology, Ecole Normale Supérieure, Paris, believes that the cycle could be a reason for the domination of diatoms in marine environments, especially after upwelling events--the upward movement of nutrient rich waters from the deep ocean to the surface.

In response to ocean upwelling, diatoms are able to quickly recover from prolonged periods of nutrient deprivation and rapidly proliferate. _Physorg
Nature
Here again, we see a significant finding that relates importantly to global carbon balance, ocean phytoplankton levels, and atmospheric oxygen levels. How many other momentous and paradigm-changing discoveries are waiting for humans to discard their politically correct prejudices in order to better perceive the reality of the universe?

Taken from an earlier posting at Al Fin the Next Level

Wednesday, April 6, 2011

Offshore Oil Production Moving to Seafloor Robotic Cities: So What Can We Do With All Those Abandoned Oil Rigs?

Neal Asher

There are over 1.3 trillion barrels of untapped oil under the seafloors. But what is the safest way of retrieving all of that oil -- much of it at deadly crushing depths?

Brazil intends to replace its fleet of floating offshore oil rigs with 2,000 metre deep "underwater cities" of robotic oil workers, part automated and part controlled from a remote location by human operators. So far, so good. But what will be done with all the huge, obsolete floating oil rigs? Why not turn them into floating resorts and marine research centres?
Inhabitat

The idea is not new. In fact, the (disputed) world’s smallest country is an old oil platform. In the design by Ku Yee Kee and Hor Sue-Wern, the reclaimed oil rig is layered in rings of habitation units sharing center common and recreation areas. The stacked units share an incredible view of the vast ocean. Beneath the water are circular labs for marine research. The designers looked like they were having some fun, inserting a pleasure boat launch, cantilevered pool, and a huge domed assembly room crowning the rig. _Inhabitat_via_Dvice

Inhabitat

Notice the subsurface marine science research labs -- or are they undersea restaurants or hotel rooms? There is room for flexibility in design, depending upon the outfitters and management.

And there is no reason why serious and progressive-minded seasteaders should not substitute small modular nuclear reactors in place of unreliable and intermittent wind and solar power devices. The last thing you want is to be stuck in the middle of the ocean without enough power to make freshwater, keep the lights on, or to cook your seafood.

Always keep your eyes open for opportunities to go beyond the ordinary.

Friday, January 21, 2011

Undersea Nuclear Reactors to Power Undersea Cities?

DCNS, the French state-controlled naval company, said it will work in partnership with French companies Areva, EDF, and the French Atomic Energy Commission to build small- and medium-sized underwater reactors to provide electricity to consumers....Radio France Internationale reported Wednesday.

The company said its Flexblue project, expected to enter the building phase in 2013, is in response to global energy challenges and renewed interest in nuclear power. _UPI


Video h/t NextBigFuture
Small, portable nuclear reactors that are made for placement under the sea, could be used for many porpoises purposes. Besides running power cables to land to serve terrestrial customers, such undersea reactors could also serve floating installations and seafloor industries -- even undersea cities.
Akin to the submarines that DCNS has been making for the French navy for 40 years, Flexblue is a cylindrical unit 100 metres in length and 12 to 15 metres in diameter. Inside would be a small nuclear power reactor and well as steam generators, turbines and a generator to produce 50 to 250 MWe.

The vision is for such a unit to be installed on the seabed under 60 to 100 metres of water, several kilometres from a centre of power demand such as a city, industrial base or remote community which it would serve via underwater cables.

A video released today depicts the unit's deployment under naval guard. It is transported to sea on a heavy lift ship which lowers itself to allow Flexblue to maneuvre under its own power. Descent occurs under the watch of divers before a cutaway view reveals four stories of plant within the hull. The structure is then covered by a net and power is transmitted by cable to shore. _WorldNuclearNews_via_NextBigFuture
WNN

Brazil is already planning for "undersea cities" as replacements for deep ocean offshore oil rigs:
The plan is to construct 'cities’ more than 2,000 metres under water, containing machines, giant pieces of equipment and robots that could inspect the systems being used to extract millions of barrels of oil. Many operations would be fully automated while others would be controlled by humans at a distance.

“Our target is that we won’t need platforms in ten years from now,” said Carlos Tadeu Fraga, executive manager of the Petrobras Research Centre.

Petrobras already owns virtual reality laboratories where engineers can inspect 3D images of oil fields. But now they want to take a further technological leap by installing floating rig equipment on the sea bed.

The machinery under the sea would be capable of separating oil, gas, water and sand, compressing substances and generating enough energy to keep the operation functioning.
As deep sea mineral mining and deep sea science and exploration joins deep sea oil & gas drilling, the need for self-powered seafloor installations will grow in urgency. Sealed nuclear reactors that can run between 20 and 50 years on a single fueling will provide the necessary energy security for such installations.

A few years ago, the Estonian Maritime Academy proposed the development and installation of a subsea nuclear reactor off the Estonian coast in the Baltic Sea, for provision of basic power to the country. US naval submarines have traversed the world's oceans for several decades, powered safely and reliably by small nuclear reactors, so the concept of undersea reactors is well proven.

The idea of nuclear powered undersea cities may seem like the stuff of science fiction, but show me a better way to power a post-apocalyptic undersea civilisation. And what better place to survive the great lefty-Luddite environmentalist-engineered dieoff of humans on the surface? Abundant electricity allows for producing freshwater via desalination, oxygen for breathing via electrolytic splitting of water, hydrogen for fuel cells and chemical processes, etc. Nuclear reactors produce plenty of heat, so there would be no reason to be cold, regardless of outside sea temperatures.

Last but not least, plentiful small modular nuclear reactors -- both on land and sea -- should put a quick end to all of the EROEI nonsense one hears batted around at peak energy religious websites. ;-)

Thursday, January 6, 2011

Sun Agrees with Oceans: A Cooler Earth

Knox et Douglass IJG Vol 1 #3 PDF

According to an Internationl Journal of Geosciences paper (PDF), ocean temperatures from Argos floats show a recent cooling between 2003-2008 (via NCMediaWatch). It is difficult for the planet to warm when most of its significant thermal mass is cooling.
In summary, we find that estimates of the recent (2003–2008) OHC rates of change are preponderantly negative. This does not support the existence of either a large positive radiative imbalance or a “missing energy.” _IntJlGeosci PDF
More on ocean cooling from Roy Spencer
WattsUpWithThat
On the solar front, the sun has experienced another sudden drop in activity recently. More from WUWT:
NOAA’s Space Weather Prediction Center (SWPC) produced their monthly solar cycle progression update yesterday. The news is not encouraging. We’ve had a drop in solar activity again in December, The sunspot count is lower, but the really worrisome thing is the Ap geomagnetic index. The solar dynamo has now dropped to magnetic activity levels last seen in late 2009. Readers may recall this post from December 23rd: Solar Geomagnetic Ap Index Hits Zero which was a bit unusual this far into cycle 24. _WUWT
As this September 2010 Science Now article states: "...something peculiar has been happening."

Flashback to a 2008 warning: Sunspots May Vanish by 2015

Let's hope not. Most humans enjoy experiencing at least one warm season per year. If the planet endures many years without a summer, humans will run out of food -- as will most other animals.

Thursday, November 4, 2010

World's Oceans, Coral Reefs, Feel Better After US Election

Al Fin recently attended a conference with representatives of all the world's oceans and seas, along with representatives from 600 of the world's largest coral reef formations, plankton communities, and kelp forests. After intensive discussions over the significance of the November 2010 elections in the US for the future of the world's oceans, and Al Fin's explanations of the ramifications of recent US elections for science and the oceans, the expressed conclusion of all attendees was one of massive relief.
Theoretical predictions indicate that coral calcification rates should decline as a result of increasing atmospheric CO2 concentrations by as much as 40% by 2100. However, real-world observations indicate that elevated CO2 and elevated temperatures are having just the opposite effect. _ScienceandPublicPolicy
Of the four 'states' that CO2 can assume, carbondioxide CO2 is a mere 1%, bicarbonate HCO3 is 93% and carbonate CO3 8% . But the total amount of carbon dissolved in the oceans is just short of 40,000Gt (Pg) compared with less than 700Gt in the atmosphere. The sea is a massive carbon dioxide reservoir, in balance with an even more massive limestone reservoir of 40,000,000Gt carbon in marine sediments .

...It is thought that the carbondioxide in the sea exists in equilibrium with that of exposed rock and bottomsediment containing limestone CaCO3 (or sea shells for that matter). In other words, that the element calcium exists in equilibrium with CO3. But the concentration of Ca (411ppm) is 10.4 mmol/l and that of all CO2 species (90ppm) 2.05 mmol/l, of which CO3 is about 6%, thus 0.12 mmol/l. Thus the sea has a vast oversupply of calcium. It is difficult therefore to accept that decalcification could be a problem as CO3 increases. To the contrary, it should be of benefit to calcifying organisms. Thus the more CO2, the more limestone is deposited. This has also been borne out by measurements (Budyko 1977).

The bit missing at the beginning is that CO2 (atmosphere) <=> CO2 (sea water) or in other words, that the carbondioxide in the air is in balance with that in the surface water.

If the amount of CO2 in the atmosphere rises, then more of it will dissolve in the water, working all the way through the chemical reactions, to an increase in acidity and an increase in carbonate CO3. Scientists believe that the sea in pre-industrial times was 'saturated' relative to dissolved limestone, and that recent increases in CO2 have 'desaturated' the sea (beginning in the antarctic sea), with possible dire consequences for sea life. But we have observed that calcium skeletons dissolve back into what scientists call 'saturated' CO3. _SeaFriends
The oceans are not acid but alkaline, with an average pH of about 8.15 (0-7 being acid, 7-14 being alkaline). But they vary both in space and time, Arctic seas being less strongly alkaline than tropical, and some bays and reefs being actually acid because of underwater volcanic emissions. The dissolution of carbon dioxide in the oceans may lower the pH slightly to about 7.9 or 7.8 by the end of the century at the worst – still alkaline.

Environmentalists like to call this a 30% increase in acidity, because it sounds more scary than a 0.3 point (out of 14) decrease in alkalinity, but no matter. It is still well within the bounds of normal variation over space and time: the pH of the water intake at the Monterey aquarium varies by almost twice as much as this every month. The difference between the pH of the seas off Hawaii and Alaska is greater than this.

Enough numbers. Try chemistry. The scary reasoning rests on the argument that lower pH will mean less dissolved carbonate in the water. But a new paper from scientists in North Carolina proves what many scientists have long suspected, namely that corals and other species do not use carbonate as raw material to make their shells; they use bicarbonate. And dissolving carbon dioxide in water actually increases bicarbonate concentrations.

This may explain why study after study keeps finding that far from depressing growth rates of marine organisms, high but realistic levels of carbon dioxide either do not affect them or increase them. By far the most important calcifiers in the oceans are plankton called coccolithophores, which account for about a third of the total marine calcium carbonate manufacture. There is now strong evidence that coccolithophores are growing faster and larger as a result of human carbon dioxide emissions. Stands to reason if they use bicarbonate. _MattRidleyinTheTimes
The persistence of coral reefs through geologic time – when temperatures were as much as 10-15°C warmer than at present, and atmospheric CO2 concentrations were 2 to 7 times higher than they are currently – provides substantive evidence that these marine entities can successfully adapt to a dramatically changing global environment. Thus, the recent die-off of many corals cannot be due solely, or even mostly, to global warming or the modest rise in atmospheric CO2 concentration over the course of the Industrial Revolution. _CO2 Science

It is unusual for representatives from all the world's seas and oceans, plus the largest communities of corals and sea plants and plankton, to gather in one place at one time. But the recent distortions of ocean science by persons who should know better, forced concerned saltwater representatives into action.

When the seas and oceans learned that corrupt land and ocean scientists were concocting a fake crisis to enrich themselves, political sponsors, and collaborators, they decided that they simply must speak out against the travesty of distorted ocean science.

Al Fin interviewed the chairman of the proceedings after the conclusion of the conference:

Al Fin: Thank you for speaking with me today, Chairman GBR (Great Barrier Reef).

Chmn: It is certainly my pleasure, Al. And thank you so much for taking time out of your schedule to attend our conference.

AF: I would not have missed it for all the world. Can you tell me why the oceans and ocean communities are so relieved by the findings of this conference?

Chmn: Well, Al, the oceans of the world have been very angry -- and you don't want to make them angry, Al, you really don't. They have been hearing all this news about humans killing the oceans with acid and CO2 until they were beginning to believe it. Having you here to explain the dishonesty of corrupt science, media, and politicians has helped us understand what is really going on.

AF: Certainly humans are doing some bad things to the seas and oceans, and for that I am sorry. But those are local problems, such as dumping toxins, untreated sewage, and other excess nutrients into the local ecosystems. Some harbours, bays, and estuaries are being stressed -- and that problem needs to be addressed.

Chmn: Yes, of course it does, Al. But all the hoopla about acid oceans and CO2 only distracts from the real problems you point out. If the crooked scientists are eating up all the resources which could have been used for remediation and finding solutions for real problems, it only hurts us more, Al.

AF: You are certainly correct. And that is why you should feel relief at the results of the November 2010 US elections. The criminal enterprise which could only do untold damage to both humans and the oceans has at least been slowed down by the election of less corrupt and less gullible elected representatives at the US federal and state levels.

Chmn: We understand all that now, thanks to you, Al. Thanks again for attending this important summit and conference.

AF: Thank you, Chairman GBR, for speaking with me for the benefit of Al Fin blog readers.

More from Matt Ridley here

Friday, October 8, 2010

Deep Sea Prospecting for Minerals, Oil, Gas -- The Motherlode

No one knows how many hydrothermal vent sites are in the oceans, but there is a best guess. Amazingly, when scientists who have studied different parts of the ridge system compared notes at the April WHOI conference, they realized they were all coming up with the same distance between known, large active vent sites: 100 kilometers. If those numbers hold true, about 600 districts spewing metal-rich fluids and potentially holding sulfide deposits may decorate the mid-ocean ridge. Nautilus Minerals estimated in a September 2009 corporate presentation that "thousands of underwater sulphide systems exist," and "if only half of underwater systems are geographically viable, seafloor production would represent several billion tons of copper per annum." _Minerals from the Seafloor

Earth's seafloors are loaded with mineral wealth. Humans have just begun to learn to tap into the huge reserves of deep sea oil and natural gas. And seafloor methane clathrate reserves may be more than twice as abundant than all other forms of hydrocarbon deposits combined. Seafloor coal deposits are likewise huge beyond previous calculations.

But beyond hydrocarbon energy wealth, the ocean floors are rich with other minerals. From precious metals to uranium to large deposits of copper, zinc, iron, sulfur and more -- the oceans are likely to be Earth's richest repository of minerals. All we need to do is to learn how to get them safely and responsibly.
In a review paper published June 23 online in the journal Mineralium Deposita, Cathles, Cornell professor of earth and atmospheric sciences, writes that while land-based deposits may be a dwindling source of valuable minerals, deposits on the ocean floor could power humanity for centuries.

The minerals, including sulfur, copper, zinc, iron and precious metals, are contained in volcanogenic massive sulfide (VMS) deposits that form on the ocean floor where tectonic plates pull apart and allow magma (molten rock) to invade the Earth's 3.7-mile- (6 kilometer-) thick crust. The magma heats seawater to 662 degrees Fahrenheit (350 degrees Celsius) and moves it through the ocean crust via convection; and the seawater deposits the minerals where it discharges along the ridge axis.

...If just 3 percent of the dissolved minerals precipitate -- an estimate based on earlier studies -- the ocean floor would hold reserves vastly greater than those on land, Cathles said.

In the case of copper -- a key component in construction, power generation and transmission, industrial machinery, transportation, electronics, plumbing, heating and cooling systems, telecommunications and more -- calculations show that just half of the total accumulated amount could be enough to bring the world's growing population up to a modern standard of living and maintain it for centuries.

"I think there's a good chance that it's a lot more than 3 percent," Cathles said. "But even just taking 3 percent, if you calculate how long the copper on the ocean floor would last, just half of it could last humanity 50 centuries or more. _RD

New Zealanders have begun exploring the mineral riches near local undersea volcanoes
. And the Aussies have begun installing deep sea observatories to compile records of what is happening along deep sea vents -- where most metals tend to come up. US institutions are likewise beginning to map undersea resources.

Nautilus Minerals (see image at top) is already bringing deep sea minerals to market. Bluewater Metals Ltd. is another ambitious company eager to jump into the deep sea gold rush.

Little by little, mining companies are working their way through the international laws, committees, and bureaucracies in order to try out some of the advanced undersea technologies that are being developed.

Remotely piloted prospecting robots will be followed by autonomous robot prospectors and miners. Semi-permanent seafloor installations -- perhaps supervised by station-keeping manned submarines overhead -- are likely to evolve if the promise of the resource proves out. Ships are subject to surface storms, but submarines -- particularly nuclear submarines -- can stay submerged below surface turbulence and maintain data communication with equipment on the seafloor.

Deep sea robotic submersibles have come a long way since the early, heady days of speculation about deep sea mineral resources. If the mining companies currently pushing to get a hand in the game can exploit the resource cleanly and responsibly, this may be the beginning of the era of deep sea resources.

Brian Wang has also taken a look at this topic.

LinkWithin