Saturday, May 31, 2025

Image of the week : tribute to Sebastião Salgado

Sebastião Salgado, the humanist Franco-Brazilian photographer, is one of the most important artists in his field.

For Génesis, his eight-year odyssey recounting the genesis of our planet, he boarded the schooner Tara from Ushuaïa to reach Antarctica.
Chinstrap penguins, Bailey Head, Deception Island

A visionary, he photographed the earth, its people and nature, its beauty but also its upheavals.
The imprint he leaves behind is an invitation to contemplate and act to preserve life and its treasures, threatened by human activity.
 
Sebastião Salgado – East of Antarctic Peninsula (2005).
Iceberg between the Paulet Island and the South Shetland Islands, Antarctica, 2005
Courtesy of Sotheby’s
 
 The foundation pays tribute to him with this photograph, taken in the Antarctic Peninsula and exhibited in the retrospective of artists in residence “La grande expédition” at 104 CENTQUATRE.
 
 
Links :

Friday, May 30, 2025

Sodern announces the commercial launch of their Astradia star tracker

 
Specially designed to meet the needs of aeronautical platforms, Astradia is a daytime star tracker capable of aiding navigation systems, making them independent of GNSS radio-navigation signals.
Coupled with an inertial navigation system, the Astradia star tracker provides, day or night, an attitude measurement to ensure precise, robust, reliable, and discreet onboard geolocation information, without emitting any signals.
This measurement helps recalibrate the natural drift of the inertial system, where more conventional geolocation systems (GPS, Galileo, etc.) have the drawback of being highly vulnerable to jamming and spoofing.
Thus, Astradia is designed to be autonomous, independent of GNSS radionavigation signals, offering a pointing accuracy of a few arcseconds, equivalent to 1 meter over a distance of 70 km.

From SatNews

Sodern (ArianeGroup) has announced the commercial launch of Astradia, a daytime star tracker capable of aiding navigation systems, making them independent of GNSS radio-navigation signals.


Daytime star tracker
 
After several years of research and development, Sodern produced Astradia, an endo-atmospheric star tracker which, when combined with an inertial navigation system (INS), provides daytime and nighttime attitude measurement, in order to guarantee precise, robust and reliable on-board geo-positioning data.
This high-performance tracker is thus autonomous, no longer reliant on radio-navigation signals, and aims to counter the natural drift in inertial navigation systems.
It also offers the advantage of emitting no waves, which could otherwise expose an aircraft to detection.

Unlike satellite-based geo-positioning systems, a combined “inertial unit/tracker” navigation system offers reliable absolute PNT measurements.

Most geo-positioning systems today have the drawback of being extremely vulnerable as they use technology based on satellite radio-navigation signals (GPS, Galileo, etc.).
These geo-positioning services can not only be scrambled or temporarily jammed, but can also be easily deceived into generating false data.

With Astradia, Sodern proposes an entirely new technology for civil or military aircraft, that require a reliable system or need to maintain stealth by not emitting any waves.
Astradia benefits from the extensive in-flight heritage of Sodern’s star trackers and high-performance resources such as its certified calibration benches.

Astradia is the result of Sodern’s know-how and a proven cutting-edge technology.
Astradia benefits from the legacy of several thousand star trackers already in service in space, along with a star catalogue and proven detection algorithms.
This technology has also undergone conclusive in-flight testing and the unit is specifically designed to meet the needs of civil and military aircraft operators.

Astradia is compact (176 mm x 185 mm x 207 mm) and weighs less than 3 kg and offers easy integration on all types of aircraft.
This optimized design makes Astradia ideal for a wide range of applications, including drones and surveillance aircraft.
Its monobloc design and easy integration make it a versatile and effective choice for a variety of aerial missions.

Astradia offers tracking capacity to within a few arc-seconds, equivalent to 1 meter at a distance of 70 km.
This function, which is extremely useful for aligning inertial navigation systems or its registration during mission, also opens the door to future applications with particularly demanding tracking requirements.

During the day and at night, this sensor delivers measurements to the aircraft every second, without interruption, providing operational capacity at any point on Earth, including over the oceans, with no need to update maps or charts in order to carry out the mission.
This sensor effectively reduces navigation drift during long flights and more generally improves the security of in-flight positioning.

Astradia will be commercially available starting in June of 2025 (pricing around 250,000 EUR)
 
Sodern's Astradia star tracker is well-suited for marine applications at sea, particularly in environments where Global Navigation Satellite System (GNSS) signals are unreliable or unavailable.
 
Links :

Thursday, May 29, 2025

China creates powerful spy satellite capable of seeing facial details from low orbit

Scientists in Beijing have created 'the world's most powerful spy camera' which can pick out facial details from distances exceeding 63 miles (100km). 
New laser-based imaging technology is reportedly capable of capturing millimeter resolution from over 60 miles away.
It means the spy camera could potentially be floating in space aboard a satellite while clearly seeing faces on Earth's surface.
Pictured is China's Tiangong Space Station

From LiveScience by Alan Bradley

Scientists in China have created a satellite with laser-imaging technology powerful enough to capture human facial details from more than 60 miles (100 kilometers) away.

This breakthrough represents a performance increase of 100 times or more compared to leading spy cameras and traditional telescopes, according to a report on the new technology in the South China Morning Post.

Amongst a broad gamut of potential applications, the technology could allow operators to surveil foreign satellites to a previously impossible level of detail.
The researchers at China’s Academy of Sciences’ Aerospace Information Research Institute outlined their findings in a new study published in the Chinese Journal of Lasers (Issue 52, Volume 3).

According to the South China Morning Post, the scientists conducted a test across Qinghai Lake in the northwest of the country with a new system based on synthetic aperture lidar (SAL), a type of laser radar capable of constructing two-dimensional or three-dimensional images.

Chinese scientists' laser-based system could reportedly spy on Earth and scrutinise foreign military satellites with unparalleled precision
 
How this new powerful spy satellite works

SAL relies on the motion of an object (like a satellite) to provide finer resolution images than other, beam-scanning radar imagery systems.
Previous SAR systems have relied on microwave radiation, which has longer wavelengths, which results in lower resolution images.

However, this new system operates at optical wavelengths, which have much shorter wavelengths than microwaves and produce clearer images (though microwaves are better for penetrating into materials, because their longer wavelengths aren’t scattered or absorbed as easily).
This image shows the targets at one end of the lake top left (spelling out 'AIR') and their SAL imaging result (top right). 
Bottom, a scene showing the placement of six pyramids and the SAL imaging result
 
During the test, which targeted arrays of reflective prisms placed 63.3 miles (101.8 km) away from the lidar system, the device detected details as small as 0.07 inches (1.7 millimeters) and measured distances to within 0.61 inches (15.6 mm).

This is a huge leap forward from previous milestones, like a 2011 test conducted by defense firm Lockheed Martin that was able to achieve an azimuth resolution of 0.79 inches (2 centimeters) from only 1 mile (1.6 km) away, or a Chinese test where scientists achieved a then-best 1.97 inch (5 cm) resolution at a distance of 4.3 miles (6.9 km).

To achieve this latest breakthrough, the Chinese team split the laser-beam driving the lidar system across a 4x4 micro-lens array, which in turn expanded the system’s optical aperture — the opening that controls the amount of light entering a camera system — from 0.68 to 2.71 inches (17.2 mm to 68.8 mm).


The experts conducted a successful test across the huge Qinghai Lake in the north-west of China
 
In this way, researchers could bypass the tradeoff of field of vision versus size of aperture, which has historically restricted such camera systems.

It’s important to note that testing took place during near perfect weather and atmospheric conditions with steady wind and limited cloud cover.
Inclement weather or other impairments to visibility could significantly impact the system’s precision and reliability.

Links :

Wednesday, May 28, 2025

Maps from when the World thought California was an island

This 1666 map by Dutch cartographer Peter Goos is one of McLaughlin's favorites.
"It's a beautiful map," he said. 

From Wired by Greg Miller

Glen McLaughlin wandered into a London map shop in 1971 and discovered something strange.
On a map from 1663 he noticed something he’d never seen before: California was floating like a big green carrot, untethered to the west coast of North America.

 Before it was depicted as an island, California was depicted as a peninsula,
as in this 1548 map from Italy.

He bought the map and hung it in his entryway, where it quickly became a conversation piece.
It soon grew into an obsession.
McLaughlin began to collect other maps showing California as an island.

 This 1625 map by English mapmaker Henry Briggs refers to "the large and goodly island of California" and was influential in spreading that geographical misconception.

“At first we stored them under the bed, but then we were concerned that the cat would pee on them,” he said.
Ultimately he bought two cases like the ones architects use to store blueprints, and over the next 40 years filled them up with more than 700 maps, mostly from the 17th and 18th centuries.
In 2011, he partly sold and partly donated his collection to Stanford University, which has digitized the maps and created an online exhibition.

 The flat northern coast of California and many place names in this 1626 map appear to be borrowed from Briggs' 1625 map.

The old maps represent an epic cartographic blunder, but they also contain a kernel of truth, the writer Rebecca Solnit argued in a recent essay.
“An island is anything surrounded by difference,” she wrote.

It wasn't just Europeans who thought California was an island, as this map originally published in Peking in 1674 shows.

And California has always been different — isolated by high mountains in the east and north, desert in the south, and the ocean to the west, it has a unique climate and ecology.

Venetian cartographer Vincenzo Coronelli made beautiful, if inaccurate maps.
In addition to depicting California as an island in this 1691 map, he shows the Mississippi River entering the Gulf of Mexico near modern day Houston and a large (nonexistent) lake in what's now northern Georgia.

It’s often seemed like a place apart in other ways too, from the Gold Rush, to the hippies, to the tech booms of modern times.

 An English map from 1646

The idea of California as an island existed in myth even before the region had been explored and mapped.
“Around the year 1500 California made its appearance as a fictional island, blessed with an abundance of gold and populated by black, Amazon-like women, whose trained griffins dined on surplus males,” Philip Hoehn, then-map librarian at UC Berkley wrote in the foreword to a catalog of the maps that McLaughlin wrote.

 The northern coast of California has more indentations in this map from around 1657.

Maps in the 1500s depicted California as a peninsula, which is closer to the truth (the Baja peninsula extends roughly a 1,000 miles south from the present-day Golden State).
Spanish expeditions in the early 1600s concluded, however, that California was cut off from the mainland.

Even celestial maps, like this one from 1660, showed California as an island.
 
A detail from another celestial map from 1660 shows California as an island in the globe to the right. 

Maps in those days were carefully guarded state secrets, McLaughlin says.
“The story is, the Dutch raided a Spanish ship and found a secret Spanish map and brought it back to Amsterdam and circulated it from there,” he said.


 Detail from a French map published in the late 1600s.
 
A 1730 French map still shows California as an island.

 
In 1622, the British mathematician Henry Briggs published an influential article accompanied by a map that clearly showed California as an island.
Briggs’ map was widely copied by European cartographers for more than a century.

This map from 1770 shows California as it was depicted at different times.
Panel "II" shows it as an island.


The beginning of the end of California’s island phase came when a Jesuit priest, Eusebio Kino, led an overland expedition across the top of the Sea of Cortez.


 A Japanese map published in 1796.

One of the most recent maps in the McLaughlin collection, this Japanese map was made in 1865.

He wrote a report accompanied by a map in 1705 that cast serious doubt on the idea of California as an island. It took more exploration, but by 1747 King Ferdinand VI of Spain was convinced.
He issued a decree stating that California was — once and for all — not an island. It took another century for cartographers to completely abandon the notion.

Jesuit priest Eusebius Kino drew a more accurate geography in this 1762 map. But the myth of California lived on for another century or more.

A page from an English atlas published in 1741.
 
This map from an English encyclopedia shows California as an island in 1807.

 

McLaughlin, who’s now 80, spent most of his career as a venture capitalist in Silicon Valley.
He says the maps dominated his home decor for much of the past four decades.
But no more.
“I do miss them, but it’s time to let them go,” he said.
“I’ve had a good long run with them.”

 Links :




Tuesday, May 27, 2025

A new AI-based weather tool surpasses current forecasts

Typhoon Doksuri struck the Philippines in July 2023 and didn’t follow the predicted storm path.
A new AI model called Aurora figured out the correct route from data captured four days in advance of the storm.
NASA
 
From ScienceNews by Kathryn Hulick
 
Weather forecasting is getting cheaper and more accurate.
 
An AI model named Aurora used machine learning to outperform current weather prediction systems, researchers report May 21 in Nature.
 
 
Aurora is a 1.3-billion-parameter foundation model for the Earth system
Icons are for illustrative purposes only. 
a, Aurora is pretrained on several heterogeneous datasets with different resolutions, variables and pressure levels. The model is then fine-tuned for several operational forecasting scenarios at different resolutions: atmospheric chemistry and air quality at 0.4°, wave modelling at 0.25°, hurricane tracking at 0.25° and weather forecasting at 0.1°. 
b, Aurora is a flexible 3D Swin Transformer with 3D Perceiver-based atmospheric encoders and decoders. The model is able to ingest inputs with different spatial resolutions, numbers of pressure levels and variables.
 
Aurora could accurately predict tropical cyclone paths, air pollution and ocean waves, as well as global weather at the scale of towns or cities — offering up forecasts in a matter of seconds.
The fact that Aurora can make such high-resolution predictions using machine learning impressed Peter Dueben, who heads the Earth system modeling group at the European Centre for Medium-Range Weather Forecasts in Bonn, Germany. 
“I think they have been the first to push that limit,” he says.
As climate change worsens, extreme weather strikes more often. 
“In a changing climate, the stakes for accurate Earth systems prediction could not be higher,” says study coauthor Paris Perdikaris, an engineer at the University of Pennsylvania in Philadelphia.

And in recent months, the U.S. government has cut funding and fired staff at the National Weather Service, making it more difficult for this agency to get important warnings out in time.
Aurora is one in a series of machine learning models that have been steadily improving weather prediction since 2022, Dueben says. 
His group has used machine learning models similar to Aurora to provide forecasts for two years.
“We’re running them every single day,” he says. Microsoft’s MSN Weather app already incorporates Aurora’s data into its forecasts.

Standard forecasting systems don’t use machine learning. 
They model Earth’s weather by solving complex math and physics equations to simulate how conditions will likely change over time.
But simulating a system as chaotic as the weather is an extremely difficult challenge. 
In July 2023, for example, official forecasts a few days in advance of Typhoon Doksuri got its path wrong.
When the storm hit the Philippines, there was little warning. 
Dozens of people died in flooding, landslides and accidents.

In a test scenario, Aurora correctly predicted Typhoon Doksuri’s track from data collected four days in advance. 
The team looked at the tracks that seven major forecasting centers had forecasted for cyclones that took place in 2022 and 2023. 
For storms in the North Atlantic and East Pacific, the AI model’s predictions were 20 to 25 percent more accurate at lead times of two to five days.
 
The official forecast from the Joint Typhoon Warning Center (PGTW) indicates that the typhoon would pass over Taiwan.
Aurora correctly predicts that Doksuri will make landfall in the Northern Philippines.
Data showing the actual typhoon track is from the International Best Track Archive for Climate Stewardship (IBTrACS) project

Outperforming the official forecasts for cyclones at up to five days in advance “has never been done before,” says study coauthor Megan Stanley, a machine intelligence researcher based at Microsoft Research in Cambridge, England. 
“As we all know from many cases of typhoons and hurricanes, having even a day’s advance notice is enough to save a lot of lives,” she says.
Unlike standard forecasts, machine learning models don’t simulate physics and solve complex math formulas to make predictions.
Instead, they analyze large datasets on how weather has changed over time. 
Aurora took in more than a million hours’ worth of information about Earth’s atmosphere. It learned how weather patterns tend to evolve.
But that was just the start.

Aurora is a foundation model. 
a, Aurora accurately predicts significant wave height and mean wave direction for Typhoon Nanmadol, the most intense tropical cyclone in 2022.
The red box shows the location of the typhoon and the number is the peak significant wave height. Aurora’s prediction and HRES-WAM analysis are for 17 September 2022 at 12 UTC, when Typhoon Nanmadol reached peak intensity.
Aurora was initialized on 16 September 2022 at 12 UTC. 
b, Across all lead times, Aurora matches or outperforms HRES-WAM on 86% of all wave variables. 
c, At a lead time of 3 days, Aurora matches or outperforms HRES-WAM on 91% of all surface-level variables.
 
In AI, a foundation model is sort of like a high school graduate.
A new grad knows a lot of useful stuff already, but with some additional training, they could perform all sorts of different jobs.
Similarly, a foundation model can go through a process called fine-tuning to learn to perform different kinds of specialized tasks.
During Aurora’s fine-tuning, the team fed the model new kinds of data about different Earth systems, including cyclone tracks, air pollution and ocean waves.
The number-crunching for a physics-based weather forecasting model may take several hours on a supercomputer. And developing a new physics-based model takes “decades,” Dueben says. 
Developing Aurora took eight weeks.
Because models like Aurora can often be run on a typical desktop and don’t require a supercomputer, they could make powerful weather forecasting more accessible to people and places that can’t afford to run their own physics-based simulations.
And because Aurora is a foundation model that can be fine-tuned, it could potentially help with any kind of Earth forecasting. 
Stanley and her colleagues imagine fine-tuning the system to predict changes in sea ice, floods, wildfires and more.
 
Links :

Monday, May 26, 2025

Scientists fear impact of deep-sea mining on search for new medicines

Microbes from deep-sea sponges could be a breakthrough in the fight against superbugs.
Photograph: Office of Ocean Exploration and Research

From The Guardian by Karen McVeigh

When Prof Mat Upton discovered a microbe from a deep-sea sponge was killing pathogenic bugs in his laboratory, he realised it could be a breakthrough in thefight against antibiotic resistant superbugs, which are responsible for thousands of deaths a year in the UK alone.

Further tests last year confirmed that an antibiotic from the sponge bacteria, found living more than 700 metres under the sea at the Rockall trough in the north-east Atlantic, was previously unknown to science, boosting its potential as a life-saving medicine.

But Upton, and other scientists who view the deep ocean and its wealth of unique and undocumented species as a prospecting ground for new medicines, fear such potential will be lost in the rush to exploit the deep sea’s equally rich metal and mineral resources.

“We’re looking at the bioactive potential of marine resources, to see if there are any more medicines or drugs down there before we destroy it for ever,” says Upton, a medical microbiologist at the University of Plymouth.
He is among many scientists urging a halt to deep-sea mining, asking for time to weigh up the pros and cons.

“We know sponges are a very good source of bioactive bacteria so I would say they would be a good source of antibiotics and anti-cancer drugs too.
In sustainability terms, this could be a better way of exploiting the economic potential of the deep sea.” 

A robotic arm breaks off a chunk of mineral-rich rock for sampling deep underwater near Papua New Guinea. 
Photograph: Nautilus Minerals
 
Oceanographers using remotely operated vehicles have spotted many new species.
Among them have been sea cucumbers with tails allowing them to sail along the ocean floor, and a rare “Dumbo” octopus, found 3,000 metres under the Pacific, off the coast of California.

Upton estimates it could take up to a decade for a newly discovered antibiotic to become a medicine – but the race towards commercial mining in the ocean abyss has already begun.

The deep sea, more than half the world’s surface, contains more nickel, cobalt and rare earth metals than all land reserves combined, according to the US Geological Survey.
Mining corporations argue that deep-sea exploration could help diversify the supply of metals, including cobalt for electric car batteries, presently mined in the Democratic Republic of the Congo, where child labour is common.
Demand for copper, aluminium, cobalt and other metals, to power technology and smartphones, is soaring.

So far, 29 licences for exploration activities have been granted by the International Seabed Authority (ISA), a UN body made up of 168 countries, to promote and regulate deep-sea mining.
No commercial exploitation licences have been granted yet, but one firm, Global Sea Mineral Resources, has said it needs regulations in place by next year to start mining in 2026.

Last week the ISA’s legal and technical commission gathered in Pretoria, South Africa, for a workshop to develop environmental standards for a draft mining code, which will create the framework for exploitation.
Michael Lodge, the organisation’s secretary general, has promised regulations will be finalised by 2020.

But many fear this is moving too fast.
Mining could devastate fragile ecosystems that are slow to recover in the highly pressurised darkness of the deep sea, as well as having knock-on effects on the wider ocean environment.
Critics have called for a 10-year ban on commercial mining.

Kristina Gjerde, a high seas policy specialist at the International Union for Conservation of Nature, is deeply concerned over the lack of environmental protections in the draft code.
“We’re just blindly going into the dark, adjusting any impacts on the way,” says Gjerde.
“We have no assurances, no evidence that they can avoid serious harm.”

A cross-party group of MPs wrote in January that deep-sea mining would have “catastrophic impacts” on habitats and species and concluded that the case for such activity had not yet been made.

A study published in January found that soft sediment in the Clarion-Clipperton Zone (CCZ) in the mid-Pacific, where most exploration licences have been granted, could take up to 10 times longer to resettle than previously thought, meaning sediment is likely to travel farther in the water column before it resettles, affecting marine life over a much larger area.

Dr Kerry Howell, a colleague of Upton’s at the University of Plymouth, is working on a model to try to predict where on the sea bed important species such as Upton’s sponge lie.
“We don’t have all the information we need” says Howell, a deep-sea ecologist.
“Our project will look at which species might be important and which may be impacted by mining.
If the models work, we will know where they are and we will know what they can do, and we can make decisions about whether mining can go ahead.”

Her work is part of a £20m five-year programme, funded by the UK’s Global Challenges Research Fund.
“We are writing regulations in a severe absence of knowledge of the ecosystem,” she warns.

Howell also receives funding, for separate research, from a deep-sea mining company, UK Seabed Resources, which is a subsidiary of the UK branch of the US aerospace and defence company Lockheed Martin.
This is also important work, she acknowledges, but scientists simply do not know enough yet.

“Most deep-sea scientists are concerned at the speed at which the development of regulations is happening,” says Howell.

Britain’s partnership with UK Seabed Resources holds licences to explore a total of 133,000 sq km of the Pacific sea floor, more than any government apart from China, according to analysis by Unearthed, Greenpeace’s investigative arm.
The licences are in the CCZ, the site of one of the world’s largest untapped collections of high-value metal ores.
The area contains trillions of potato-sized black lumps called polymetallic nodules, containing cobalt, nickel, copper and manganese.

Dr Jon Copley, associate professor at the National Oceanography Centre Southampton and a contributor to the BBC’s Blue Planet II series on marine life, is studying hydrothermal vents.
Formed when seawater meets magma, and the sites of massive sulphide deposits, these vents are one of three different resources of the deep sea being administered by the ISA.
A deep-sea bed of manganese nodules off the Cook Islands. 
Photograph: USGS
 
“On deep sea vents, scientists are clear – we don’t want mining on them,” he says.
“There are thousands of species of deep-sea animals living there and new species are being discovered all the time.”

Roughly 400 new species have been found at active hydrothermal vents since 1977.

Copley believes science has moved on since the ISA, whose members are parties to the 1982 UN convention on the law of the sea, began its work in 1994.
He questions whether the agency is fit for purpose, when part of its mandate is to promote seabed resources “for the benefit of mankind”.

“The ISA was set up on a false premise – that there is a vast wealth down there that could be used to address social injustice.
But it is quite possible the enterprise will increase the gap between rich and poor.
At what point do we say: ‘Hang on, is this a good idea?’

“I can understand why the ISA doesn’t want to scare off investors by being heavy-handed on environmental protections.
They have to deliver the benefits to the developing world.
They have to be very careful.”

Environmentalists point to last year’s designation of the “Lost City”, an area under the Atlantic and one of the world’s most important sites of scientific interest, as part of a mining exploration zone, and are sceptical of the ISA’s environmental credentials.

Deep-sea sponges from the Rockall Trough 
Photograph: Kerry Howell/Deep Links Project
 
Louisa Casson, an oceans campaigner for Greenpeace, says that the deep sea is comparable to rainforests in terms of carbon sinks, which are vital in combating climate breakdown.
Casson says: “We haven’t heard any reassurances from mining companies or the ISA about how they might handle this potential risk.
Last year, the ISA granted Poland an exploration licence in an area highlighted by Unesco.
Right now, it seems to be serving the interests of the companies.”

The ISA has said there was no suggestion Poland was going to mine in this area and that part of the exploration licence was to conduct environmental studies.

In a statement to the Guardian, Lodge says that, where mining activities are concerned, the ISA is taking “all necessary measures” under the UN convention on the law of the sea “to ensure the effective protection of the marine environment, including marine biodiversity, from harmful effects”.

“An extremely important part of ISA’s mandate is ensuring appropriate environmental assessments and safeguards in the activities it regulates,” he says.
“No seabed mining will take place until such elements have been agreed by all 168 member states.”

Lodge says the money the ISA receives from proposed royalties or other finances will be shared for the benefit of member states, particularly taking into account the needs of those that are “least developed and landlocked”.
 
Links :

Sunday, May 25, 2025

The evolution of the Great Wave off Kanagawa: see four versions that Hokusai painted over nearly 40 years

 
Has any Japanese woodblock print — or for that matter, any piece of Japanese art — endured as well across place and time as The Great Wave off Kanagawa?
Even those of us who have never known its name, let alone those of us unsure of who made it and when, can bring it to mind it with some clarity, as sure a sign as any (along with the numerous parodies) that it taps into something deep within all of us.
But though the artist behind it, 18th- and 19th-century ukiyo‑e painter Katsushika Hokusai, was undoubtedly a master of his tradition, even he didn’t conjure up The Great Wave off Kanagawa in the form we know it on the first try.



In fact, he’d been producing different versions of it for nearly forty years.
On Twitter Tarin tkasasagi recently posted four versions of the Great Wave that Hokusai painted over that period.
Here you see them arranged from top to bottom: the first from 1792, when he was 33; the second from 1803, when he was 44; the third from 1805, when he was 46; and the famous fourth from 1831, when he was 72.

Each time, Hokusai de-emphasizes the human presence and emphasizes the natural elements, bringing out drama from the water itself rather than from the people who regard or navigate it.
In each version, too, the colors grow bolder and the lines stronger.



The skill level of a working artist — especially an artist working as hard as Hokusai — almost inevitably increases over time, and that must have something to do with these changes, though it also looks like the process of an artistic personality settling into its subject matter. 
“From the time I was six, I was in the habit of sketching things I saw around me,” says Hokusai himself in a widely circulated quotation. 
“Around the age of 50, I began to work in earnest, producing numerous designs. It was not until my 70th year, however, that I produced anything of significance.”



In the artist’s telling, only at the age of 73, after the final Great Wave, did he begin to grasp “the underlying structure of birds and animals, insects and fish, and the way trees and plants grow. 
Thus if I keep up my efforts, I will have even a better understanding when I was 80 and by 90 will have penetrated to the heart of things. 
At 100, I may reach a level of divine understanding, and if I live decades beyond that, everything I paint — dot and line — will be alive.” 
The fact that he didn’t make it to 100 will forever keep enthusiasts wondering what magnificence an even older Hokusai might have achieved, but even so, the body of work he managed to produce in his 88 years contains works that, like the ultimate form of The Great Wave off Kanagawa, outlived him and will outlive all of us.

Links :