Designing cities below sea level: Paraty, Brazil

Paraty is a small town and tourist location on Brazil’s Costa Verde, between Rio de Janeiro and São Paulo. Rising as high as 1,300 meters behind the town are tropical forests and mountains. The village was founded in 1597 and established formally as a town by Portuguese colonists in 1667. The region was populated by the Guaianás Indians. Paraty’s historic center has cobbled streets and buildings dating to its time as a port, during the Brazilian Gold Rush around 1700. Since it is located below-sea-level, the streets flood every full-moon at high tide. Instead of keeping the sea water out, the city planners built a sea wall with special openings to let the water flow in and clean the cobble stone streets.

The following excerpt is from an article by Jose Barbedo et al. Full text can be found here.

“The leading Brazilian urban planner Lucio Costa has described Paraty as the city where the ways of the sea and the paths of the earth meet and interlock. This short description synthesizes the unique landscape that surrounds one of the most valuable colonial settlements in South America.

When the first Portuguese settled in this site in the 16th century, the area was composed of wetlands, which were since progressively drained for the construction of the colonial town. The remnants of the floodplain which were not urbanized have been converted for agricultural use, serving as a buffer zone between the city and the mountains. The two river systems flowing into the urban area (Mateus Nunes and Perequê Açu) have steep gradients, bringing rapid discharges of large volumes of storm water onto the floodplain.

The original settlement was planned to cope with regular high tides and common flooding events; the streets were deliberately designed in a “V” shape, sloping down from the curbs towards the center, in order to keep the houses dry while the streets turned into canals. Today, this fragile balance between the city and its natural environment is threatened by unplanned urban expansion, which in turn may also be aggravated by more frequent extreme rainfall events as registered in recent times.”

‘Extremes will become normal’

Quote by Lam Chiu-ying, former director of the Hong Kong Observatory, the central weather forecast agency of the government of Hong Kong, from an article in the Hong Kong Free Press about the Black Rainstorm and massive deluge of the week of September 4. 2023.

Here is a selection of photo images and video stills from international media coverage from September 9. 2023.

https://hongkongfp.com/wp-content/uploads/2023/09/Kyle_HKFP_20230908-17-Copy.jpg
https://www.reuters.com/world/asia-pacific/hong-kongs-heaviest-rain-least-140-years-floods-city-streets-metro-2023-09-08/
https://www.reuters.com/world/asia-pacific/hong-kongs-heaviest-rain-least-140-years-floods-city-streets-metro-2023-09-08/
https://www.bbc.com/news/world-asia-china-66748239
https://www.reuters.com/world/asia-pacific/hong-kongs-heaviest-rain-least-140-years-floods-city-streets-metro-2023-09-08/

Torres de Ofir

In the north of Portugal, sea lvel rise causes masssive land loss along the Atlantic coast. The building that has become the most emblematic for the situation along Portugal’s coast are the Torres de Ofir, three towers set between the Cavado river and the ocean front in Esposende, about an hour north of Porto. The Portuguese hydrobiologist and researcher at the Abel Salazar Institute Adriano Bordalo e Sá made the following statement which has become much quoted by the press: ” “Se vivêssemos num país a sério, as torres de Ofir há muito teriam sido demolidas / If we were a serious country, the towers would have been demolished long ago.”

Depending on how the photo is taken, the three towers appear more or less vulnerable to the ocean. Some photo journalists have even opted for a tilted perspective, making the scene appear a bit more dramatic. Here is a selection of recent and historic photos. Clearly the Torres de Ofir are an infamous and much publicized example of the kind of problematic coastal architecture in times of rising sea level.

Fear of Drowning – Aquaman and the Fate of Atlantis

Last year author Ram V and artist Christian Ward published a new three piece comic book on the DC-superhero Aquaman. (I have commented on the Aquaman movie from the same year here and here.) The story is not really about Atlantis, acording to the DC universe the sunken kingdom of Aquaman’s mother. But in it Aquaman tells the story of the kingdom, as he says it was told to him by his father once. What makes this, one of countless variations of the myth, interesting to us today, is the role that the (suppressed) fear of submergence plays in it.

According to the tale, Atlantis was a swimmin city and the Atlantan people were blessed with a magic that helped them create their city and become powerful. This secret power could be accessed by magicians and kings but the power also accessed and read the minds of these rulers and eventually threatened to manifest their suppressed fears as well as their desires. “And which was the one fear that haunted every man, every woman and every child in Atlantis every day,” the text reads. “What if Atlantis were to drown?” (my translations from the German print version)

And of course this is what happens: Atlantis sinks beneath the sea level. It’s rulers manage to create an underwater habitat and thereby safe the population while also sending the magic power source, called “Dark World”, away into outer-space. The text concludes: “The mystery in Atlantis’ heart was both its creative force and its downfall.”

While the fall of Atlantis is usually used as a moral metaphor for blind greed and hubris, the Atlantan society created by comic author Ram V seems controlled and maybe obsessed by their ever present fear of the ocean. This is the portrait of a fragile society, one that despite all the powers and wonders it achieved lives a most perilous life, only waiting for the imminent disaster.

Life in Atlantis is essentially what Geologist Peter Haff termed live in the “technosphere” – an existence that is wholly dependent on technological solutions and utterly lost should these ever fail.

Dipesh Chakrabaty, who quotes Peter Haff in his book “The Climate of History in a Planetary Age” compares Haff’s “technosphere” to a much older text from 1955 by Carl Schmitt. Schmitt there distinguishes between a “terran” and a “maritime” existence, the latter being life onboard of a ship. Chakrabaty concludes: “If Haff’s argument is correct, that the technosphere has become a basic condition for the survival of seven (soon to be nine) billion people today, one could say that we have already made Earth into something like Schmitt’s ship.” (my translations)

Or Ram V’s Atlantis, I would add.

Chakrabaty’s conclusion is even more true for coastal communities. The existence of many of these communities rely on sea walls, dikes, pumps and other technical and architectural structures. It is intriguing to take Ram V’s tale of suppressed fears that become manifest and adapt it to the sensibilities and culture of coastal communities today. One is tempted to ask: How much Atlantis is in cities like New York, Bangkok or Jakarta?

Atlantis in “20.000 Leagues under the Seas”

There is a beautifully written passage on the submerged continent and city Atlantis to be found in Jules Verne’s famous novel published in French in 1869/1870. The English translation of the chapter is available online. For simplicity reasons I simply copy the link to the chapter here.

The gradual flood

The movie “Moonfall” from 2022 might be the worst movie ever done by Roland Emmerich, the movie director a Canadian journal aptly described as a “disaster-porn artist”. Emmerich has filmed – or rather digitally created – a whole collection of gigantic flood waves over the years from “The Day After Tomorrow” in 2004 to “2012” which was released in 2009. (see my notes here)

“Moonfall” also features a flood scene albeit a visually and atmospherically quite different one. Instead of the usual bird’s eye view shot of one gigantic, towering wave crashing against the city skyline, Emmerich here chooses to depict flooding as a slower, more gradual event. The flood event is taking place at nighttime and the scene has a very dark and shadowy quality. It’s an interesting aesthetic choice that doesn’t fail to create an intense and uncanny effect.

Like in most disaster movies, the perspective is from an elevated and securely removed position. Yet the director here tries to use a less spectacular and slightly more realistic approach to the pheonomenon.

There is however another scene later in the movie that returns to the old formula of the spectacularly crashing giant water wall.

Islands and Whales

In folktales from various cultures there are tales of sea animals so big, that they get mistaken for islands. In some stories, sailors land on them and spend time on “land” before realizing that they are actually on top of a living, breathing animal. These islands accordingly appear and disappear, rise and sink into the ocean frequently. In the Irish Legend of Saint Brendan, Brendan of Clonfert, a monch and fabled navigator, and his disciples land on a giant sea creature called Jasconius. “Because of its size, Brendan and his fellow voyagers mistake it for an island and land to make camp. They celebrate Easter on the sleeping giant’s back, but awaken it when they light their campfire. They race to their ship, and Brendan explains that the moving island is really Jasconius, who labors unsuccessfully to put his tail in its mouth.”

In mythology sea animals often trick humans into believing that they are on safe, solid ground. But equally often, they rescue people from floods and offer their bodies as rescue boats. See for example the tale about the fish Matsya here.

Lighthouse Retreat

In 2019 this 120 year old lighthouse on the Denish coast had to be moved 70 meters back

The 23-meter-high lighthouse is located on a cliff about 60 meters above sea level. When it was put into operation, the cliff was about 200 meters from the sea. In the end, it was only six meters to the cliffs.

What seems like a looney idea from a Uncle Scrooge comic, is happening all over the world. (see my post on comics here) We will see many more cultural heritage sites on wheels like this in the years to come.

To read more about the Rubjerg Knude Lighthouse, go here.

There’s a whole series of images from similar buildings here.

Climate Catastrophe pictured in 1986

Already in 1986 the well known German news-magazine Der Spiegel published this image on it’s front page. It depicts the Dome of Cologne, one of the most important cultural heritage sites of Germany, partially flooded. The visual strategies of the media have not changed much in the last 35 years!

This is the same German magazine 10 years later.

I can’t say whether the change in motiv is due to a hightened awareness of the global interconnectedness of the issue or because Germany hosted the 1. UN Climate Change Conference that year.

The last 400.000 years

This is from the New York times in 1959.

thanks to Janet Grau for the lead!