Categories: OUT OF THE BOX

An Idea to Connect Vertically with the Deep Sea

Approximately 70% of the earth’s surface is covered by the ocean, and the ocean itself consists of approximately 80% deep sea.
The deep sea offers enormous potential for ensuring effective and appropriate cycles and processes in the earth’s biosphere.
Unfortunately, we have yet to make the most of this potential.
This large-scale concept seeks to take advantage of the limitless possibilities of the deep sea by linking together vertically the air, sea surface, deep sea, and sea floor.
Now is the time for us to create a new interface with the deep sea, the earth’s final frontier.

Breaking free from past patterns of land development, which have focused mainly on efficiency, this plan is intended to promote true sustainability while maximizing use of the deep sea’s resources.

The OCEAN SPIRAL Concept for a Deep Sea City of the Future
Harnessing the power of the deep sea in order to renew the earth

MASTER VISIONVertical unification of the sea surface with the deep sea

BLUE GARDEN

The Ocean Spiral base camp

Blue Garden is a sphere measuring 500m in diameter that floats in the deep sea like a spaceship.
This city is even safer and more comfortable than the land-based ones we all know.

  • A comfortable city with minimal temperature changes
  • A safe city unaffected by typhoons or earthquakes
  • A healthy city with higher concentrations of oxygen than on the ground

The Blue Garden’s grand entrance

The Blue Garden’s atrium

A New Lifestyle
In the Casual Zone facing the deep sea, people can experience and enjoy the deep sea, while learning about and discussing its unique qualities.

Examples:
Deep sea sightseeing tours
Hands-on education on the deep sea
Deep sea high-concentration oxygen therapy
Comfortable and safe places to live and work

The Blue Garden’s deep sea promenade

New Business Models
The Business Zone of the central tower
incubates business models for new deep sea industries.

Examples:
Deep sea resource industries
Deep sea energy industries
Deep sea tourism industries
Advanced deep sea research facilities

The Blue Garden’s central plaza

INFRA SPIRAL

Integrating the functions required 
because of the deep sea

  • Electricity: Power generation based on ocean thermal energy conversion
  • Food: Aquaculture using deep sea water
  • Fresh water: Desalination using water pressure
  • Transportation: Port (supply base) for deep sea submersible probes
  • Information: Deep sea monitoring facility

INFRA SPIRAL

EARTH FACTORY

Developing tomorrow’s advanced deep sea 
industries based on today’s up-to-date 
deep sea research

  • CO2: Storage and reuse of industrial carbon dioxide emissions
  • Resources: Development and cultivation of deep sea resources

EARTH FACTORY

SOLUTIONEarth regeneration by potentials of the deep sea

Renewing Global Cycles in Five Areas
Harnessing the potential of the deep sea to renew the earth’s cycles 
and processes and to create a more sustainable human society in five critical areas

TECHNOLOGYTechnological challenges for the future

Structural Design: Building a Submerged City of Concrete, 500m in Diameter

1.
Strength
Using a spherical shape to withstand water pressure
2.
Concrete
High-strength resin concrete
3.
Reinforcement bars
Rustproof resin bars
4.
Environmental considerations
Use of materials recycled from PET beverage containers in the resin concrete

Spherical concrete lattice shell of 500m in diameter

Using an internal tower to reinforce the sphere’s shell

Exterior Wall Design: Tackling the Challenge of Building a Transparent Sphere with 360° Panoramic Views of the Deep Sea

1.
Strength
Realized using triangular acrylic plates measuring 50m each a side
2.
Strength
Reinforced using semitransparent FRP ribs
3.
Cleaning
Using microbubbles and other means to prevent the adhesion of marine life
4.
Joints
Sealing against water, absorbing displacement etc,

Building a spherical shell with triangular acrylic plates measuring 50m on each side

360° panoramic views of the deep sea

Indoor Environment Design: Challenge to Achieve the Comfortable Environment Making  the Best Use of the Conditions of the Deep Sea.

1.
Natural convection
Using temperature differential between the sea water and air to ensure the natural convection with comfortable and cool air
2.
Dehumidification
Using the cooling source of deep sea water to ensure comfortable dehumidified air conditioning
3.
Air conditioning
Reusing chilled water after dehumidification to ensure comfortable radiant air conditioning
4.
Thermal insulation
A comfortable environment due to the insulation effects of acrylic plates (3m thick)

Construction Plans: Challenge to Achieve Fully Automated Maritime Construction of the Sphere

1.
Early adoption of future technologies
3D printing construction method (Pouring resin concrete, resin bars)
2.
Integrating proven technologies
Automated vertical diversion of large-scale concrete forms Jump-up method
Balanced cantilever Dywidag method
3.
Construction methods specific to maritime construction
All construction work undertaken at the sea surface (Submersion of completed structure)


Construction steps

Operation and Maintenance Plans: Fail-safe Features and Maintenance

1. Control of vertical movement: Super ballast balls filled with sand

2.
Wave control: 
Floating seawall

3.
Control of everyday vibrations:
Vibration-damping equipment

VARIATIONCompatible with various sites and scales

Site Variations: The OCEAN SPIRAL Network, Connecting the World’s Seas

Candidate sites based on regional characteristics

1. Coastal seas: Stimulating economy on remote islands in exclusive economic zones
2. Seas of island nations: Countering rising sea levels in Pacific island nations
3. Seas in desert regions: Comfortable deep sea living in the seas of the Middle East and Africa

Candidate sites based on sea floor topography

Source: The Deep Sea and its Denizens−A World of Beautiful Mysteries (Full-color illustrated) (Natsumesha CO.,LTD.), Japan Agency for Marine-Earth Science and Technology (JAMSTEC),supervision.; illustrations by saimitu.com

Scale Variations:

In addition to the city-scaled 500-m diameter model, a more practical architectural-scale 200-m diameter model is prepared.

500-m diameter (city model)

200-m diameter (architectural model)

Liat

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