Jason Polakow presents Jaws

Jason Polakow presents JAWS from Christophe Valognes

Amazing footage of big wave windsurfing icon Jason Polakow's first video podcast, shot during the March swells at JAWS.

March 15th at Piahi delivered the best conditions that Jason Polakow scored this winter.

One of KA-1111's best days in Jaws with huge aerials and high speed carving bottom and top turns.

The video demonstrates that Jason attacks the lip harder than anyone, sails closer to the critical section of the wave and that he is ready to pay the price for his style to constantly push his personal limits - which are the benchmark at Jaws. Simply impressive!

Jason: "Since my first encounter with Jaws some 20 years ago, my life has forever been changed. It's kind of strange how one wave can shape your life and become your sole obsession."

Whales give dolphins a lift

Many species interact in the wild, most often as predator and prey.
But recent encounters between humpback whales and bottlenose dolphins reveal a playful side to interspecies interaction.
In two different locations in Hawaii, scientists watched as dolphins "rode" the heads of whales: the whales lifted the dolphins up and out of the water, and then the dolphins slid back down.

The two species seemed to cooperate in the activity, and neither displayed signs of aggression or distress.
Whales and dolphins in Hawaiian waters often interact, but playful social activity such as this is extremely rare between species.

Links :

• Two unusual interactions between a bottlenose dolphin (Tursiops truncatus) and a Humpback whale (Megaptera novaeangliae) in Hawaiian waters
  

Man accidentally kidnapped on illegal Antarctic voyage

The 52ft yacht, Nilaya, has set sail for Antarctica

From TheTelegraph

A New Zealand repair man is on his way to Antarctica after a renegade Norwegian yachtsman set sail unaware he was still on board.

The marine mechanic was reportedly working on an anchor aboard the 54ft Nilaya in Auckland harbour, when the yacht hurriedly cast off as immigration officials tried to serve deportation papers on the skipper, Jarle Andhoy, 34.

Mr Andhoy and three crew members have embarked on an unpermitted voyage to Antarctica's Ross Sea, in defiance of both the Norwegian and New Zealand governments.
A previous trip he made to Antarctica almost a year ago ended in disaster when his yacht Berserk sank in a fierce storm and three men died.
Declaring himself "a Viking", the Norwegian adventurer says he is seeking the wreckage of the Berserk, which was serving as a supply ship for an attempt to reach the South Pole on quad bikes.

The Wild Vikings : a new generation of explorers (Northwest Passage 2007)
"the Nilaya was not carrying a locator beacon so it would not put rescue services at risk"

New Zealand authorities, who co-ordinated an extensive search and rescue operation last year in which Mr Andhoy and a companion were airlifted to safety, are furious about his return voyage.
They are trying to track down the Nilaya.
Mr Andhoy told the Norwegian public broadcasting service NRK that the presence on board of the unnamed New Zealander was not part of his plan, but was the result of "a hectic departure" from Auckland last week.
He said it was "a somewhat tricky situation" because the man did not have a passport or papers with him.
But Mr Andhoy insisted: "Everything is on schedule and the atmosphere is good on board.
"We are well prepared for what may befall us."
The broadcaster reported him as saying that the Nilaya was not carrying a locator beacon so it would not put rescue services at risk.

Murray McCully, the New Zealand foreign minister, spoke to Norwegian government officials on Tuesday to express concern over the Auckland man understood to be on board.
"It's fair to say the actions of the skipper are of some concern to the New Zealand government and have been for some time," Mr McCully said.

The South Pole and the Ross Sea (NASA)

A Foreign Ministry spokesman added: "The Southern Ocean is one of the most remote and inhospitable areas in the world.
"New Zealand government agencies are obviously concerned about any possibility that there could be a repeat of last year's events in the Ross Sea.''
Marine experts said the workman was unlikely to have adequate clothing and would put an extra strain on the yacht's provisions.

Links :

• TVNZ : Rogue Antarctic sailors prompt search
• NewtalkNZ : Govts work together to track down Andhoy
• ExplorersWeb : Berserk tragedy: Interview with Jarle Andhøy
• SouthPoleStation : A Berserk expedition gone wrong
  

Earth pictures from space

From ESA : a southern summer bloom

Microscopic algae create a bright blue in a new photo snapped by a European Earth-observing satellite.

Photosynthesizing micro-organisms called phytoplankton created the figure 8 in the south Atlantic Ocean, about 360 miles (600 kilometers) east of the Falkland Islands.
The European Space Agency's Envisat spacecraft acquired the image on Dec. 2, 2011.

Such oceanic algal blooms are common in the Southern Hemisphere's spring and summer, when upwelling brings minerals from deeper waters to the surface, researchers said.
Phytoplankton depend on these minerals, and the organisms proliferate as a result.

Different types and quantities of phytoplankton produce blooms of different colors, such as the blues and greens seen in the new image.
By analzying such satellite pictures, scientists can monitor blooms and get an idea of the species involved.

Some algal blooms can be toxic, poisoning fish and other marine animals on a large scale.
When they occur in coastal waters, such harmful blooms are often referred to as "red tides," and they can affect fisheries and human health.

Phytoplankton form the base of the marine food chain, and they play a huge role in the removal of carbon dioxide from the atmosphere and the production of oxygen in the world's oceans.
So scientists are keen to monitor these tiny organisms, to get a better idea of ecosystem health and to monitor possible impacts of climate change.

The 8.8-ton Envisat spacecraft, which launched in 2002, is the largest non-military Earth-observing satellite ever built.
The $2.3-billion craft carries a suite of 10 different instruments, with which it monitors the planet's land, oceans, atmosphere and ice caps continuously.

Envisat snapped the new photo with its Medium Resolution Imaging Spectrometer (MERIS), an instrument that measures the solar radiation reflected by Earth.
MERIS images have a resolution of 1,000 feet (300 meters).

From NASA : the Eddy and the plankton

The ocean has storms and weather that rival the size and scale of tropical cyclones.
But rather than destruction, these storms—better known as eddies—are more likely to bring life to the sea...and often in places that are otherwise barren.

The Moderate Resolution Imaging Spectroradiometer (MODIS) on NASA’s Terra satellite captured these natural-color images of a deep-ocean eddy on December 26, 2011.
The top close-up shows the vortex structure of the eddy, traced in light blue by plankton blooming in the 150-kilometer wide swirl.
The lower, wider view shows the bloom and eddy in context, about 800 kilometers south of South Africa.

“Eddies are the internal weather of the sea,” says Dennis McGillicuddy, an oceanographer at the Woods Hole Oceanographic Institution.
They are huge masses of water spinning in a whirlpool pattern—either clockwise or counterclockwise—and they can stretch for hundreds of kilometers.
Eddies often spin off from major ocean current systems and can last for months.

In the image above, the anti-cyclonic (counter-clockwise) eddy likely peeled off from the Agulhas Current, which flows along the southeastern coast of Africa and around the tip of South Africa.
Agulhas eddies, or “current rings,” tend to be among the largest in the world, transporting warm, salty water from the Indian Ocean to the South Atlantic.

Certain types of eddies can promote blooms of phytoplankton.
As these water masses stir the ocean, they draw nutrients up from the deep, fertilizing the surface waters to create blooms of microscopic, plant-like organisms in the open ocean, which is relatively barren compared to coastal waters.

In satellite observations of sea surface height and in computer models, eddies appear as bumps or depressions in the ocean, indicating the upwelling or downwelling of water.
They also can be distinguished by higher or lower surface temperatures.

Links :

• WHOI : the oceans have their own weather systems
• ScienceMag : Eddy/wind interactions stimulate extraordinary mid-ocean plankton blooms
  

However, such observations were not available for the eddy depicted above.

Finding Antarctica: mapping the last continent

Terres Antarctiques, [1670.] Pierre Duval

From State Library New South Wales

A State library exhibition of the mapping of Antarctica from the 15th to the 21st century, from crude woodcut maps to the latest satellite imagery.

Antarctica is regulated by the Antarctic Treaty which applies to the area south of 60° South Latitude, including all ice shelves and islands.
The original signatories in 1959 of United Kingdom, South Africa, Belgium, Japan, United States of America, Norway, France, New Zealand, Russia, Argentina, Australia and Chile have been joined by many other States.

Now, numerous signatories agree to prohibit military activity, except in support of science; prohibit nuclear explosions and the disposal of nuclear waste; promote scientific research and the exchange of data; and hold all territorial claims in abeyance.
Many of these countries also have an interest in Antarctic conservation as shown by membership of the Convention on the Conservation of Antarctic Marine Living Resources (CCAMLR) 1982.

Antarctic Regions. Maps showing present state of research.
By J.G. Bartholomew. F.R.S.E. 1898.

Antarctica is the highest, driest, coldest, windiest continent.
The region around Antarctica, called the Southern Ocean, is open with no boundaries; the Antarctic Circumpolar Current flows towards the east, driven by westerly winds.
The only partial obstruction is the Drake Passage/Magellan Straits, between Cape Horn (at the tip of South America) and the Antarctic Peninsula.
Thick ice sheets flow off the coast of Antarctica and break away to form icebergs that are carried north into the basins of the Pacific, Indian and Atlantic Oceans.

The land has small mosses and lichens but no higher plants while the oceans contain a rich and diverse life with the better known whales, seals and penguins as well as icefish, starfish and sea urchins.
The only places where people live are bases or stations, usually operated by national governments.