• Ice Shelves : Brunt - Monitoring ice shelves in Antarctica - ESA

    Two large cracks, Chasm 1 and the ‘Halloween Crack’, are growing on the Brunt Ice Shelf in Antarctica and when they meet, a large iceberg around 3 times the size of Leeds (1,594 km2) will break off.
    We use satellite images to measure the growth of both cracks on the Brunt Ice Shelf, along with tracking visible features on the ice shelf surface to measure the ice speed.

    Chasm1, located on the West side of the Brunt Ice Shelf, lay dormant for 35 years, but in 2012 it showed signs of movement before starting to propagate across the ice shelf. In 2014 the crack began to grow even more rapidly, and is now over 55 km long! There is now only a 5 km bridge of ice between the tip of Chasm 1 and the McDonald Ice Rumples. When it breaks through, a new iceberg will calve.

    A second fracture on the Eastern side of the Brunt Ice Shelf, named the ‘Halloween Crack’ because of its discovery on the 31st October 2016, is growing inland away from the McDonald Ice Rumples. Although the Halloween Crack is more recent, it is now also over 60 km long. Watch the drone footage below to fly along the length of the crack!

  • But it is worse than that, par Marc Doll

    I realize there is something I have known for some time but have never said, and, since I have just spent another 4 hours of my life in climate change academia I have to get this out of my system.

    Please understand that many you reading this won’t live to an old age... and likely will start scrolling after one or 2 more paragraphs... (edit...Ok I was wrong on this point. This is now my 2nd most shared post of all time..(edit)...make that my most shared)

    The IPCC report and Paris accord are incredibly overly optimistic and that commits the world to a target that means the death of hundreds of millions if not more.

    But it is worse than that.

    Even the commitments made by countries in the Paris accord don’t get us to a 2 degree world.

    But it is worse than that.

    The 2 degree target is now unattainable (unless of course the entirety of civilization does a 180 today...) and is based on geo-engineering the climate of the earth as well as the sequestering of every molecule of carbon we have produced since 1987, as well as every molecule we are producing today,as well as every molecule we produce tomorrow.... with magical technologies that don’t exist, wont exist and, even if they did would likely cause as many if not more problems than they fix.

    But it is worse than that.

    The 2 degree target of the IPCC does not factor in the feedback loops such as the increase absorption of heat due to a drastic reduction in the albedo (reflectivity) effect caused by the 70% loss of arctic ice,..- the release of methane from a thawing arctic. (there is more energy stored in the arctic methane than there is in coal in the world). This is called the methane dragon. If the process of the release of the methane, currently frozen in the soil and ocean beds of the arctic, which may have already begun, but if it spins out of control we are looking a an 8 degree rise in temperature.

    But it is worse than that.

    The report which gives us 12 years to get our head’s out of our arses underestimated the amount of heat stored in the world’s oceans, as we descovered in mid-January by 40%... so no , we don’t have 12 more years.

    But it is worse than that.

    The IPCC report ignores the effects of humans messing up the Nitrogen cycle through agricultural fertilizers and more... Don’t go down this rabbit hole if you want to sleep at night.

    But it is worse than that.

    Sea level rise will not be gradual. Even assuming that the billions of tons of water that is currently being dumped down to the ground level of Greenland isn’t creating a lubricant which eventually will allow the ice to free-flow into the northern oceans; it is only the friction to the islands surface that is currently holding the ice back. Then consider the same process is happening in Antarctica but is also coupled with the disappearance of the ice shelves which act as buttresses holding the glaciers from free flowing into the southern ocean. then factor in thermal expansions; the simple fact that warmer water takes up more space and It becomes clear that we are not looking at maintaining the current 3.4mm/yr increase in sea level rise (which incidentally is terrifying when you multiply it out over decades and centuries.) We will be looking at major calving events that will result in much bigger yearly increases coupled with an exponential increase in glacial melting. We know that every increase of 100ppm of C02 increases sea level by about 100 feet. We have already baked in 130 feet of sea level rise. It is just a question of how long it is going to take to get there... and then keep on rising..

    But it is worse than that.

    Insects are disappearing at 6 times the speed of larger animals and at a rate of about 2.5% of their biomass every year. These are our pollinators. These are links in our food chain. These represent the basic functioning of every terrestrial ecosystem.

    But it is worse than that.

    58% of the biomass of vertebrae life on earth has been lost since 1970. That is basically in my lifetime!

    But it is worse than that.

    The amount of Carbon we add to the atmosphere is equal to a yearly a human caused forest fire 20% bigger than the continent of Africa. Yes, that is every single year!

    But it is worse than that.

    Drought in nearly every food producing place in the world is expected to intensify by mid-century and make them basically unusable by the end of the century... Then factor in the end of Phosphorus (China and Russia have already stopped exporting it knowing this) and the depletion of aquifers and you come to the conclusion that feeding the planet becomes impossible.

    But it is worse than that.

    We can no longer save the society that we live in and many of us are going to be dead long before our life expectancy would suggest.

    If your idea of hope is having some slightly modified Standard of living going forward and live to ripe old age... there is no hope. This civilization is over...

    ..but there is hope..

    There is a way for some to come through this and have an enjoyable life on the other side. Every day we delay can be measured in human lives. There will come a day of inaction when that number includes someone you love, yourself or myself.

    So we have 2 options.

    Wake the fuck up. If we do we will only have to experience the end of our society as we know it aka...the inevitable economic collapse which is now unavoidable, but be able to save and rebuild something new on the other side. This would require a deep adaptation. Words like sustainability would need to be seen as toxic and our focus needs be on regeneration. Regeneration of soil, forests, grasslands, oceans etc.... This is all possible.

    Option 2 is the path we are on thinking that we can slowly adapt to change. This not only ensures we experience collapse but also condemns humanity to not just economic and social collapse but in a 4-6 or even an 8 degree world... extinction.

    I am sick of pipeline discussions. I am sick of any argument that is predicated on the defeatist assumption that we will continue to burn oil at an ever increasing rate simply because it is what we have always done. Fact is if we do we are not just fucked, we are dead. I am sick of people who don’t understand how their food is produced, and its effect on the climate.(both carnivores who eat feed-lot meat and vegans who eat industrially-produced-mono-cropped-veggies as they are equally guilty here. The consumption of either is devastating). I am sick of the tons of shiny new clothes people are wearing without realizing 1 Kg of cotton takes over 10 thousand Liters of water and incredible amounts of energy to produce. I am sickened by the amount of that same clothing hits the landfill in near new condition. I am sick of the argument that our oil is less poisonous than someone else’s. Firstly, no it isn’t and secondly, It doesn’t fucking matter. I am sick of people that can’t even handle the ridiculously-small, only-the-tip-of- the-iceberg-of-changes we need to accept; a carbon tax. I am sick of the fact that the political will seems only capable of focusing on the individual consumer through small measures like a carbon tax but no elected Party seems to have the fortitude to enact policies that take it to the small handful of companies that are responsible for 70% of our current C02 production. I am sick of my own hypocrisy that allows me to still use fossil fuels for transportation. I am sick of those who use hypocrisy as an argument against action. I am sick of the Leadership of my country that argues we can have economic growth and survivable environment... we can’t. I am sickened by the normalizing of the leadership of our Southern neighbour who as the most polluting nation in the world officially ignores even the tragedy that is the Paris accord. I am sick of the politicians I worked to get elected being impotent on this subject. Naheed and Greg I’m looking at you. (BTW...Druh, you are an exception) I am sick that the next image I put up of my kids, cheese, pets or bread is going to gain immeasurably more attention than a post such as this which actually has meaning... I am sick about the fact that all the information I referenced here is easily discoverable in scientific journals through a simple google search but will be characterized by many as hyperbolic.

    I am confused as to who I am more upset with. Those who have fallen for the denier propaganda, those who choose to be willfully ignorant, those who understand this issue and throw their hands up in a fit of lazy despair or those who are as cognitive as I am to the urgency of this issue yet continue living day-to-day feeling self-satisfied with their recycling, electric car, voting record or some other equally inane lifestyle modification while waiting for society to hit the tipping point so they don’t have to actually put their values into practice (which despite my recent life changes still more or less includes me). All that said...

    There is a path forward.

    But every day we delay the path forward includes fewer of us. Build community, build resilience, work for food security, think regeneration, plant food producing trees, think perennial food production, turn your waste products into resources, eat food that does not mine the soil and is locally produced, eat meat that is grass fed in a holistic or intensively rotated (ideally holistically grazed in a silvopasture ) that is used to provide nutrients to vegetation, get to know a farmer or become one yourself, park your car, do not vote for anyone who either ignores climate change or says we can have our cake and eat it too, quit your job if it is fossil fuel related (it is better than losing it... which you will), stop buying shit, stop buying expensive cars and overly large houses and then complain that local planet saving food costs more than Costco. Stop buying things that are designed to break and be disposed-of, let go of this society slowly and by your own volition (its better than being forced to do it quickly), Rip up your lawn and plant a garden with perennial veggies, fruit bushes, fruit trees and nut trees. Learn to compost your own poop (it is easy and doesn’t stink). Buy an apple with a blemish, Get a smaller house on a bigger lot and regenerate that land, Plant a guerrilla garden on a city road allowance. Return to the multi-generational house, Realize that growth has only been a thing in human civilization for 250 years and it is about to end and make preparations for this change. Teach this to your children. Buy only the necessities, don’t buy new clothes-go to the thrift store. Don’t use single use plastic or if you do re-purpose it, Unplug your garberator and compost everything, Relearn old forgotten skills. Don’t let yourself get away with the argument that the plane is going there anyway when you book a holiday. Understand that there is no such thing as the new normal because next year will be worse, Understand before you make the argument that we need to reduce human population ... meaning the population elsewhere... that it is not overpopulation in China or India that is causing the current problem... It is us and our “western” lifestyle, Understand that those that are currently arguing against refugees and climate change are both increasing the effects of climate change and causing millions of climate refugees... which will be arriving on Canada’s doorstep because Canada, due to our size and Northern Latitude, will on the whole have some of the best climate refuges. Understand that the densification of cities is condemning those in that density to a food-less future. Stop tolerating the middle ground on climate change. there is no middle ground on gravity, the earth is round, and we are on the verge of collapse.


    At last check over 25000 shares. Thank you for reading.

    Thanks to Dr. Eric Rignot, Rupert Read , Dr. Jim Anderson, everyone at Berkely Earth those that put keep and Environmental Advanced Sciences on FB upto date and so many other climate scientists who’s work have inspired this piece. Thanks as well to the 16 yr old Gretta Thunburg who gave me the courage to take what was in my head and put it to paper,. I encourage you to dig deep. Listen to talks where scientist are talking to scientists. They are less likely then to use the conservative filters they impose on themselves and you will get to the cutting edge.

    *on a personal note, since I post about my children, I don’t accept friend requests from people I haven’t met. That said as of today, I have figured out how to enable the “follow” button on my account. I have been blown away by all the fantastic and heartfelt messages and commitments to change I have received due to this post and look forward to reading them.

  • La liste des incidents du USCG Polar Star continue à s’allonger. Les capacités polaires des garde-côtes états-uniens sont à la merci d’un incident…

    FIRE IN ANTARCTIC OCEAN Aboard USCG’s Last Heavy Icebreaker – gCaptain

    The Coast Guard Cutter Polar Star, with 75,000 horsepower and its 13,500-ton weight, is guided by its crew to break through Antarctic ice en route to the National Science Foundation’s McMurdo Station, Jan. 15, 2017. The ship, which was designed more than 40 years ago, remains the world’s most powerful non-nuclear icebreaker.
    U.S. Coast Guard photo by Chief Petty Officer David Mosley

    The 150-member crew of the U.S. Coast Guard Cutter Polar Sta_r fought a fire at approximately 9 p.m. PST Feb. 10 that broke out in the ship’s incinerator room about 650 miles north of McMurdo Sound, Antarctica.

    After initial response efforts using four fire extinguishers failed, fire crews spent almost two hours extinguishing the fire. Fire damage was contained inside the incinerator housing, while firefighting water used to cool exhaust pipe in the surrounding area damaged several electrical systems and insulation in the room.

    Repairs are already being planned for the Polar Star’s upcoming maintenance period. The incinerator will need to be full functional before next year’s mission.
    “_It’s always a serious matter whenever a shipboard fire breaks out at sea, and it’s even more concerning when that ship is in one of the most remote places on Earth,
    ” said Vice Adm. Linda Fagan, commander of the U.S. Coast Guard’s Pacific Area.
    The Feb. 10 fire was not the first engineering casualty faced by the Polar Star crew this deployment. While en route to Antarctica, one of the ship’s electrical systems began to smoke, causing damage to wiring in an electrical switchboard, and one of the ship’s two evaporators used to make drinkable water failed. The electrical switchboard was repaired by the crew, and the ship’s evaporator was repaired after parts were received during a port call in Wellington, New Zealand.

    The ship also experienced a leak from the shaft that drives the ship’s propeller, which halted icebreaking operations to send scuba divers into the water to repair the seal around the shaft. A hyperbaric chamber on loan from the U.S. Navy aboard the ship allows Coast Guard divers to make external emergency repairs and inspections of the ship’s hull at sea.

    The Polar Star also experienced ship-wide power outages while breaking ice. Crew members spent nine hours shutting down the ship’s power plant and rebooting the electrical system in order to remedy the outages.

    The U.S. Coast Guard maintains two icebreakers – the Coast Guard Cutter Healy, which is a medium icebreaker, and the Polar Star, the United States’ only heavy icebreaker. If a catastrophic event, such as getting stuck in the ice, were to happen to the Healy in the Arctic or to the Polar Star near Antarctica, the U.S. Coast Guard is left without a self-rescue capability.

    By contrast, Russia currently operates more than 40 icebreakers – several of which are nuclear powered.

    nouvel épisode après il y a 6 semaines.

  • Despite Challenges, USCGC Polar Star Arrives in Antarctica – gCaptain

    The Coast Guard Cutter Polar Star breaks ice in McMurdo Sound near Antarctica on Saturday, Jan. 13, 2018.
    U.S. Coast Guard Photo

    The 150 crewmembers of the U.S. Coast Guard Cutter Polar Star have arrived in Antarctica along with a resupply vessel as part of Operation Deep Freeze, the annual mission to resupply U.S. interests in Antarctica.

    The icebreaker’s arrival comes after the crew experienced multiple mechanical issues, including ship-wide power outages, and against the backdrop of the partial government shutdown that has left Coast Guard servicemembers without pay.

    Homeported in Seattle, the 42-year-old Coast Guard cutter is the United States’ only operational heavy icebreaker.
    The ship also experienced a leak from the shaft that drives the ship’s propeller, which halted icebreaking operations so divers could repair the seal around the shaft. A hyperbaric chamber on loan from the U.S. Navy aboard the ship allows Coast Guard divers to make external emergency repairs and inspections of the ship’s hull.

    Colmatage de fuites sur la ligne d’arbre d’hélice…

    Protecting national interests in the Polar regions is essential to ensure the Coast Guard’s national defense strategy and search and rescue capabilities are ready for action, but in order to do so, the icebreaker fleet requires modernization,” the Coast Guard said in a press release.

    If a catastrophic event were to happen, such as getting stuck in the ice, the Coast Guard would left without a self-rescue capability. By contrast, Russia currently operates more than 40 icebreakers, including several of which are nuclear powered, the Coast Guard noted.

    While we focus our efforts on creating a peaceful and collaborative environment in the Arctic, we’re also responding to the impacts of increased competition in this strategically important region,” said Adm. Karl Schultz, commandant of the U.S. Coast Guard. “Our continued presence will enable us to reinforce positive opportunities and mitigate negative consequences today and tomorrow.

    Présence #arctique de plus en plus symbolique,… s’il y a un pépin en Arctique maintenant, il n’y a plus qu’à attendre que le Polar Star revienne du pôle sud, en espérant que ses moteurs et auxiliaires tiennent le coup, mieux que pour le voyage aller, p. ex. !

  • This Part Of Antarctica Was Not Supposed To Be Shrinking | Gizmodo Australia

    That suggests it’s far from the end of the story for this very big, very remote, and very poorly studied part of the world. New datasets expected to come online from satellite missions like GRACE-Follow On, which uses gravity data to track Antarctica’s weight loss, and ICESat-2, which measures the height of icy surfaces, should help researchers refine the picture even further.

    But this isn’t the first time a study has punched a hole in East Antarctica’s icy fortitude. A study published last summer found that two critical East Antarctic outlet glaciers, Totten and Moscow University #glacier, are shedding some 18 billion tons of ice a year. More recently, NASA researchers estimated that four #glaciers west of Totten have lost nine feet of surface height since 2008.

    One thing’s for certain: If East Antarctica is losing weight, and if that trend accelerates, the future of Earth’s coastlines could start to look a lot dimmer.

    #antarctique #eau #climat

  • Rotten fish to help power #Hurtigruten cruise ships after refit | Agricultural Commodities | Reuters

    The Nordic region’s most high-profile cruise fleet operator is refitting its ships to make them less polluting, and plans to use a byproduct of rotten fish to help power their new, leaner engines.

    Norway’s Hurtigruten, best known for the ships that ferry tourists along the country’s fjords and coastline and up into the Arctic, is investing 7 billion crowns ($826 million) over three years to adapt its 17-strong fleet.

    Six of its older vessels will be retrofitted to run on a combination of liquefied natural gas (LNG), electric batteries and liquefied bio gas (LBG).

    We are talking about an energy source (LBG) from organic waste, which would otherwise have gone up in the air. This is waste material from dead fish, from agriculture and forestry,” Hurtigruten CEO Daniel Skjeldam told Reuters in an interview.

    Our main aim is to improve and cut emissions,” he said.

    Hurtigruten, also the world’s biggest expedition cruise operator to destinations including Antarctica, Svalbard and Greenland, is also ordering three new ships that will run on electricity, with a diesel engine only as back-up.

  • A Maritime Revolution Is Coming, and No One’s in the Wheelhouse - Bloomberg

    A technician inspects an Oceanalpha drone on a pond before a test in Zhuhai, China.
    Photographer: Qilai Shen/Bloomberg

    In the vast, freezing Ross Sea, China’s “Snow Dragon” icebreaker needed to find a safe anchorage before it could begin its mission to set up China’s fifth Antarctic research station. The solution was to deploy one of Zhang Yunfei’s freezer-tested boat drones to map the ocean floor. 

    For Zhang, it was the latest in a string of government contracts — from surveying Tibetan lakes to testing river pollution — that have helped him turn a university project into China’s largest unmanned surface vessel company, one that has fired the interest of some of China’s biggest venture capitalists. In a pending round of funding, Oceanalpha Co. Ltd. may be valued at $780 million — about 40 times revenue — despite never having turned a profit.
    The big prize is cargo. Zhang has a new partnership with Wuhan University of Technology, China’s Classification Society and Zhuhai municipal government that will use artificial intelligence to direct autonomous container vessels.

    There will be a huge revolution in the maritime industry within three years,” Zhang said. “Cargo ships will be autonomous before cars.

    The project, called #Cloudrift — a reference to the Chinese legend of the monkey king, who could summon a cloud on which he traveled — is racing against rivals to build an unmanned cargo ship this year. Norway has created a test area for pilotless vessels in the Trondheim Fjord in a joint effort by the Norwegian University of Science Technology and companies including Rolls Royce.

    Oceanalpha’s drone with the “Snow Dragon” icebreaker in Antarctica.
    Source: Oceanalpha

  • Top Climate Scientist: Humans Will Go Extinct if We Don’t Fix Climate Change by 2023

    In a recent speech at the University of Chicago, James Anderson — a professor of atmospheric chemistry at Harvard University — warned that climate change is drastically pushing Earth back to the Eocene Epoch from 33 million BCE, when there was no ice on either pole. Anderson says current #pollution levels have already catastrophically depleted atmospheric #ozone levels, which absorb 98 percent of #ultraviolet rays, to levels not seen in 12 million years.

    Anderson’s assessment of humanity’s timeline for action is likely accurate, given that his diagnosis and discovery of Antarctica’s ozone holes led to the Montreal Protocol of 1987. Anderson’s research was recognized by the United Nations in September of 1997. He subsequently received the United Nations Vienna Convention Award for Protection of the Ozone Layer in 2005, and has been recognized by numerous universities and academic bodies for his research.

    #climat #extinction

    • The good news is there are a relatively small amount of culprits responsible for the vast majority of carbon emissions, meaning governments know who to focus on. As Grit Post reported in July of 2017, more than half of all carbon emissions between 1988 and 2016 can be traced back to just 25 fossil fuel giants around the world. 10 of those 25 top emitters are American companies, meaning the onus is largely on the United States to rein in major polluters like ConocoPhillips, ExxonMobil, Chevron, and Marathon Oil. Other offenders include Chinese companies extracting and burning coal, and Russian oil conglomerates like Rosneft, Gazprom, and Lukoil.

      However, the bad news for humanity is that as long as Donald Trump is President of the United States, swift action to combat climate change seems unlikely prior to 2020, given that Trump pulled out of the Paris Climate Accords and refuses to even acknowledge the threat of climate change despite warnings from U.S. government agencies like the Department of Homeland Security and the Department of Defense.

  • New view of Antarctica in 3D / CryoSat / Observing the Earth / Our Activities / ESA

    Thanks to ESA’s CryoSat mission, a new map of Antarctica provides the most accurate 3D view ever of the continent’s vast ice sheet and floating ice shelves.

    This latest digital elevation model, which is available for download, is a result of research published recently in The Cryosphere. The model replaces the version published in March 2017.

    Tom Slater from the UK Centre for Polar Observation and Modelling (CPOM) said, “Our new model has several advantages over the previous one. It covers 350 000 sq km more of the continent’s surface and the resolution is twice as high, sampling the ice-sheet surface every kilometre.

    CryoSat’s radar altimeter detects tiny variations in the height of the ice across the entire continent, including on the steeper continental margins where the vast majority of ice losses occur.

    The model uses about 250 million measurements that CryoSat took between July 2010 and July 2016.

    This is about five million more than were used in the previous version, giving a snapshot of the height of the ice across 95% of the continent – a 3% increase on the 2017 version.

    (versions en haute résolution disponibles)

  • This is the Longest Sailable Straight Line Path on Earth – gCaptain

    kepleronlyknows’ original straight line path.
    Credit: kepleronlyknows

    In 2012, reddit user kepleronlyknows posted a map claiming to show the longest straight line a vessel could theoretically sail on earth without hitting land.

    The map showed a route from Pakistan, through the Mozambique Channel, around the Cape of Good Hope and Cape Horn, and north through the Pacific to eastern Russia.The user provided no details about how he came to his conclusion, writing only “The Longest straight line: you can sail almost 20,000 miles in a straight line from Pakistan to Kamchatka Peninsula, Russia.

    The post generated a lot of interest and led to subsequent attempts to prove and disprove kepleronlyknows’ route, while some others chimed in with their own theories about the longest sailable straight line earth.

    Now, some six years later, a pair of researchers have developed an algorithm claiming to solve the problem once and for all. Interestingly, what their models showed looked nearly identical to kepleronlyknows’ original route.

    According to the authors, Rohan Chabukswar and Kushal Mukherjee, the longest straight line path on earth can be found using “branch-and-bound” algorithm, which the authors say uses great circles. 

    Although it does not look like a straight line on the map, the algorithm using great circles ensures that it is,” Chabukswar and Mukherjee noted.

    The line originates in Sonmiani, Las Bela, Balochistan, Pakistan, threads the needle between Africa and Madagascar, between Antarctica and Tiera del Fuego in South America, and ending in Karaginsky District, Kamchatka Krai, Russia. The line also covers an astounding distance of 32,089.7 kilometers (19939.62 miles), further corroborating kepleronlyknows findings.

    In their conclusion, researchers Rohan Chabukswar and Kushal Mukherjee write:
    We proposed an innovative approach for relaxation of an optimisation problem for utilising the branch- and-bound algorithm. On the way, we managed to prove that kepleronlyknows was right about the longest sailable straight line path on the Earth.

  • UK, U.S. study Antarctic glacier, hoping to crack sea level risks | Agricultural Commodities | Reuters

    Ice velocities (meters per year) of Thwaites Glacier (approximate location outlined with dashed line)and neighboring glaciers in West Antarctica; inset map shows location. The ocean bottom temperature appears as shades of red (degrees Celsius). Ocean areas shown in gray are too shallow to affect the glacial undersides.
    Credit: NASA/JPL-Caltech

    Britain and the United States launched a $25 million project on Monday to study the risks of a collapse of a giant glacier in Antarctica that is already shrinking and nudging up global sea levels.

    The five-year research, involving 100 scientists, would be the two nations’ biggest joint scientific project in Antarctica since the 1940s. Ice is thawing from Greenland to Antarctica and man-made global warming is accelerating the trend.

    The scientists would study the Thwaites Glacier, which is roughly the size of Florida or Britain, in West Antarctica, the UK Natural Environment Research Council and U.S. National Science Foundation said in a joint statement.

    (image issue de
    Study shows Thwaites Glacier’s ice loss may not progress as quickly as thought

  • Icebergs could float to the rescue of Cape Town water crisis | Agricultural Commodities | Reuters

    Marine salvage experts are floating a plan to tug icebergs from Antarctica to South Africa’s drought-hit Cape Town to help solve the region’s worst water shortage in a century.

    Salvage master Nick Sloane told Reuters he was looking for government and private investors for a scheme to guide huge chunks of ice across the ocean, chop them into a slury and melt them down into millions of litres of drinking water.

    We want to show that if there is no other source to solve the water crisis, we have another idea no one else has thought of yet,” said Sloane, who led the refloating of the capsized Italian passenger liner Costa Concordia in 2014.

  • Antarctic Research Ship to Search for Wreck of Shackleton’s ’Endurance’ | Smart News | Smithsonian

    The polar exploration ship Endurance has not been seen since 1915, when it was crushed by sea ice in Antarctica’s Weddell Sea during a failed Trans-Antarctic crossing by Ernest #Shackleton. But in 2019, Jonathan Amos at the BBC reports that a team of scientists will attempt to locate the wreck when they visit the area to study the #Larsen_C Ice Shelf, the mega-iceberg that broke off the continent last July.

    The S.A. Agulhas II should reach the area in January or February as part of the Weddell Sea Expedition 2019. But the search for the remains of Endurance will be contingent on if the crew has the time and opportunity to send an autonomous underwater vehicle (AUV) to the right location.
    The final position of the ship when it sunk November 21, 1915 is believed to be about 100 to 150 nautical miles from Larsen C, making the ship an irresistible target. If it is found, it’s likely to be in excellent condition, reports Henry Bodkin at The Telegraph. That’s because the Antarctic Circumpolar Current may have kept wood-boring sea worms from damaging the wreck, which, if discovered, will be declared a protected historic monument.

    The South African polar research and supply vessel S.A. Agulhas II will be used for the expedition.AMSOL

  • A new study on increased snowfall in Antarctica shows the dramatic pace of climate change — Quartz

    It may sound odd to hear news of more snow during a time when scientists keep uncovering more evidence that polar ice caps are melting, raising sea levels around the world. But it makes sense, and it’s not a good sign for the Earth. Warmer temperatures mean more moisture in the air, which creates better conditions for snow over Antarctica. So really, this is a sign of the same climate problems causing droughts, storms, and floods.

    The findings may help answer a question scientists have had about the impact of snowfall on rapid climate change. Plainly put, would more snowfall in Antarctica slow the rise of sea levels by trapping water in the form of snow? The answer: Probably not. A 2012 study published in the journal Nature suggested more snow correlated with an increase in the rate at which ice breaks and floats away.

    #climat #neige #antarctique

  • The last whalers: commuting from the North Sea to Antarctica | Aeon Essays

    In the mid-20th century, young men from #Shetland would come of age and travel to Edinburgh. ‘Quite a lot of Shetland boys did that,’ says Gibbie Fraser, who was that boy some 60 years ago. ‘And I remember goin’ and dere was a lot of men dere and dey all seemed huge and in dose days dey all wore … dere dress clothes as almost a uniform.’ For many, this would have been their first trip to the mainland, their first trip to ‘Scotland’ proper at all, and the boys would watch the double-decker buses for the first time, or board a black cab for the neighbourhood of Leith. There, they would stand in lines that snaked around city blocks.Shetlanders are some of the only living people who participated in Antarctic whaling. #Whaling in the Southern Ocean followed the devastation of whale stocks in the North Sea around #Britain, #Iceland and #Norway in the late-19th and early 20th centuries. Whaling has been a foundation of Shetland’s economy for more than 300 years. It began with subsistence whaling, in the 18th and 19th centuries, and then developed into large-scale #Arctic and #Greenland hunts in the mid-19th century. Salvesen began whaling in Shetland at Olna in 1904, when the company established a whaling station. ‘That’s where [they], I suppose in a way, came to appreciate the Shetland men,’ said Fraser.


  • Billion-dollar polar engineering ‘needed to slow melting glaciers’

    Scientists have outlined plans to build a series of mammoth engineering projects in Greenland and Antarctica to help slow down the disintegration of the planet’s main glaciers. The controversial proposals include underwater walls, artificial islands and huge pumping stations that would channel cold water into the bases of glaciers to stop them from melting and sliding into the sea.

    [...] “We think that geoengineering of glaciers could delay much of Greenland and Antarctica’s grounded ice from reaching the sea for centuries, buying time to address global warming,” the scientists write in the current issue of Nature. “Geoengineering of glaciers has received little attention in journals. Most people assume that it is unfeasible and environmentally undesirable. We disagree.”

    #géoingénierie #Arctique #Antarctique

  • Penguin mega-colony discovered using satellites and drones, raising scientists’ hopes

    Scientists have discovered a ‘supercolony’ of Adélie penguins in Antarctica’s remote Danger Islands, raising hopes that the bird’s population isn’t declining as rapidly as previously thought.

    The discovery, which is documented in a paper published this week in Scientific Reports, came after Stony Brook University biologist Heather Lynch and NASA’s Mathew Schwaller noticed apparent guano stains in satellite images of the Danger Islands, a remote chain of normally ice-locked islands off the Antarctic Peninsula, in 2014.

    #Pingouins #Antarctique

  • New Study Finds Sea Level Rise Has Accelerated – gCaptain

    Global sea level rise has been accelerating in recent decades, rather than increasing steadily, according to a new study based on 25 years of NASA and European satellite data.

    This acceleration, driven mainly by increased melting in Greenland and Antarctica, has the potential to double the total sea level rise projected by 2100 when compared to projections that assume a constant rate of sea level rise, according to lead author Steve Nerem. Nerem is a professor of Aerospace Engineering Sciences at the University of Colorado Boulder, a fellow at Colorado’s Cooperative Institute for Research in Environmental Sciences (CIRES), and a member of NASA’s Sea Level Change team.

    If the rate of ocean rise continues to change at this pace, sea level will rise 26 inches (65 centimeters) by 2100 — enough to cause significant problems for coastal cities, according to the new assessment by Nerem and colleagues from NASA’s Goddard Space Flight Center in Greenbelt, Maryland; CU Boulder; the University of South Florida in Tampa; and Old Dominion University in Norfolk, Virginia. The team, driven to understand and better predict Earth’s response to a warming world, published their work Feb. 12 in the journal Proceedings of the National Academy of Sciences.

    This is almost certainly a conservative estimate,” Nerem said. “Our extrapolation assumes that sea level continues to change in the future as it has over the last 25 years. Given the large changes we are seeing in the ice sheets today, that’s not likely.

  • America’s Only Heavy Icebreaker Experienced Flooding, Engine Failure During Annual Antarctic Supply Mission – gCaptain

    The United States’ only operational heavy icebreaker suffered both flooding and engine failure during this year’s icebreaking mission to Antarctica.

    Despite these challenges, however, the USCGC Polar Star completed its Antarctic mission this week in support of National Science Foundation (NSF) after cutting a resupply channel through 15 miles of ice in the Ross Sea and escorting supply vessels to the continent.
    Built more than 40 years ago, the 399-foot Polar Star is the only operational heavy icebreaker in the U.S. fleet. With a crew of nearly 150 people, it weighs 13,500 tons and uses 75,000 horsepower to break ice up to 21 feet thick.

    The Coast Guard is currently in the process of procuring a single new heavy polar icebreaker, however, construction is not expected to begin until 2019 at the earliest, and the necessary funds have still not been appropriated. Delivery of the vessel is not expected until 2023, based on current estimates.

    If the Polar Star were to suffer a catastrophic mechanical failure, the Nation would not be able to support heavy icebreaker missions like Operation Deep Freeze, and our Nation has no vessel capable of rescuing the crew if the icebreakers were to fail in the ice,” said Vice Adm. Fred Midgette, commander, U.S. Coast Guard Pacific Area in Alameda, California.

  • SYRIA : Avaaz, Purpose & the Art of Selling Hate for Empire | Wrong Kind of Green
    Le système des organisations de propagande tournant autour de la guerre en Syris

    Sep 17, 2014 / 1Sky, Amnesty International, Antarctica, Avaaz, Earth Day Network, Examples of Legitimate Organizations, Human Rights Watch, Imperialist Wars/Occupations, Non-Profit Industrial Complex, Occupy Wall Street, Pacifism as Pathology, Purpose, TckTcktck Partner: Meet ’The Corporate Leaders Group on Climate Change’, The International Campaign to Destabilize Syria, Uncategorized, Whiteness & Aversive Racism, World Vision

    #Syrie #guerre #propagande #impérialisme #nouveau_médias

  • THE SOUTH CHINA SEA : - the Mediterranean of Asia, Ellen Wasylina - livre, ebook, epub

    the Mediterranean of Asia
    The geostrategic Maritime Review n°9
    Ellen Wasylina

    The South China Sea is a classic Mediterranean sea-structure with a long history of populations living in the basin and taking advantage of a permanent trading activity interrupted by some dramatic war moments. The Chinese preponderance on the development and the history of the basin has been a permanent element of both equilibrium and dilemma. Political and military tensions are heating up with a sharp increase in commercial relations amongst the regional countries and the great international powers.


    Revues QUEST OF THE ARCTIC, Ellen Wasylina, The geostrategic Maritime Review 7

    The geostrategic Maritime Review n°7
    Ellen Wasylina

    This seventh issue of the Geostrategic Maritime Review comes on the sixth year of activity of the International Geostrategic Maritime Observatory. This publication contains five articles : Arctic Geopolitics as a Major Public Issue : the Reasons Behind a Lack of Awareness ; Harvesting Arctic Authority : The Protection of Arctic Biomarine Resources, Sovereignty and Global Security ; The Case for an International Régime for the Arctic ; 25 years ago : the Odyssey of the Astrolabe and A life in the service of France, of the Pacific, and the Arctic and Antarctica : Michel Rocard (1930-2016), Regions.


    Revues STRATEGIC BALTIC SEA, Ellen Wasylina, The geostrategic Maritime Review 8

    The #geostrategic_Maritime_Review n°8
    Ellen Wasylina

    This issue of the Geostrategic Maritime Review gives the reader some background and depth on the history of the Baltic Sea region. The studied topics are the geostrategic situation, the geopolitical and geoeconomic stakes of logistic hubs in the Baltic states, and finally, the digitalization and modernization of European transportation and the roles that the US, Russia and the EU play together to ensure national, economic and energy security in Eurasia.

    #arctique #mer_de_chine_méridonale #pays_baltes #mer_baltique #bibliographie #

  • Scientists begin to uncover the mysteries of Antarctica’s vast fossil forests - ScienceAlert

    The team has yet to publish the results of its findings, but 13 tree fossil fragments have been recovered so far. Together with the rocks surrounding these fragments, they can teach us a lot about the ecosystems of the distant past, and what might have wiped out all of this life.

    “This forest is a glimpse of life before the extinction, which can help us understand what caused the event,” says Gulbranson.

    N’empêche, il y a des vers de terre bien vivants en #Antarctique #forêt #paléontologie