Osaka Bay area marine corridor plan

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The Proceedings of The International Symposium of U n

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Buichiro Murata', Noboru Ojimal, Hitoshi Kamashita2, Mamoru Takimoto2, Mutsuo Ogata2, Keiji Chihara3

and Ryusuke Hosoda4

'Japan International Marine Science and Technology Federation, Kansai Office, 'The Institute of Regional and Social Planning,

'Fair Illustrations lida Bldg., Nakanoshima 3-6-14, Osaka 530, 'University of Osaka Prefecture,_{Gakuencho 1-1, Sakai, Ota-593}

ECHNISUHE UNIVERSITET laboratorium voor S:heepshydromechanica ABSTRACT _Archief Mekelweg 2, 2628 CD Delft - 781836

The "Osaka Bay Area Marine Corridor" system is proposed.Te/t1Pd 5tiMg3areficPdr5

system will be positioned as a huge "Techno-, Econo-, Socio- and _Eco-System" composed of "Corridor line" and _{"Corridor link" subsystems.}

The corridor line is an integrated undersea tube system in the _{sea offcoast and to} travel round the Osaka Bay. _{It functions as passenger transportation system and} cargo distribution system, information _{and communications system, etc. The corridor}

links are to be constructed as marine cities at each node of the corridor line and

works as integrated intellectual complexes and as junctions to onshore transportation systems.

The principal point of the present plan for the environmental _{assessment stands on} the concept that we have _{to understand and consider much more the importance of}

the ecology system of the inland_{sea area. Many of developments carried}

out in the

Osaka Bay area _{were for solving problems of the disposal}

of industrial/home wastes,

of the lack of _{open spaces for the promotion of}

new city function, and so on. So

that, the authors_{propose an integrated marine environment model for the inland}

sea

area that will present the natural _{interaction between lithosphere,}

hydrosphere, biosphere and human society _{in the 21st century's earth system.}

1. INTRODUCTION

The world is now entering _{into the era of groping for}

a new mutual aspect between 'the earth system' and 'the human activities'. Human beings have barely _recognized

the fact that their

have been affecting the _delicate balance of the earth _{system composed of atmosphere,}

hydrosphere, lithosphere and biosphere.

The Inland Sea of Japan, _{Setonaikai, involves}

is characterized by geological and physical conditions, where

red tide and high

BUD/COD sea water are frequently observed. The innermost part of the Osaka Bay is o7ne of such a stagnant and consequently contaminated area.

Many plans have been reported to develop

the Osaka Bay area

economically and sometimes environmentally. However, very few ecological

assessment has been involved there.

In the present paper, the authors propose the 'Osaka Bay Area Marine Corridor Plan'.

In the plan, they discuss prospective aspect of socio, marine and

human-techno systems from a viewpoint of marine ecology. 2. CONCEPT OF MARINE CORRIDOR PLAN

The 'Osaka Bay Area Marine Corridor' system is composed of integrated undersea

transportation system 'Corridor Line' and 'Corridor Link' system, large-scale integrated

marine cities as shown in Fig. 1.

Inland Sea of Japan (Setonalkal) Kobe Airport C.L. .40° CORRIDOR LINE I .0

Fig. I The Osaka Bay Area Marine Corridor Plan

The Corridor Line system has many functions such as linear-motor driven traffic

system which makes passengers possible to travel round the Osaka Bay in about 40

minutes, linear-motor driven cargo transportation system, communication network

system and so on. It will provide an important basis to the formation of circular-linked coastal cities around the Osaka Bay including whole Awaji island.

The Corridor Link will be arranged at eight specific positions off the coast of main OSAKA BAY 0.`) Hanshin Marine City C.L. I Sakai C.L.I 'CORRIDOR LINK Kansai International Airport C.L.

cities surrounding the bay, as shown in

characteristics of the region. All the corridor links will be integrated with each other

and will play an important role as the "Intellectual Capital Kansai's

Mega-Infrastructure".

Many problems which human beings have to solve have been posed. We ourselves should solve problems lying in front of us such as an explosive increase of population and those of environmental destruction, lack of energy resources and food, housing and health as well as the problem of disparity in income levels and standard of living between developed and developing countries.

The Osaka Bay Area Marine Corridor is now requested to propose a concept; a

scheme and policy to the world for solving those problems as the "Intellectual Capital

Kansai's Mega-Infrastructures". To meet those requests, following measures of five levels are proposed:

Global Level:

A model for protection, improvement and creation of ecology system in the inland sea area is required from a viewpoint of the earth system environment. And, from

a viewpoint of prospective human life and activities, a proposal for a new aspect of urban design is also required.

International Level:

Inheriting the Kansai's historic accumulations in culture, science and technology, building up a linkage for worldwide communication is required as well as a base for providing new cultural value and knowledge obtained through the exchange of

personnel and information. National Level:

The Marine Corridor is required to perform its important part for the creation of

advanced functions to meet the demands

of coming new era

construction of base which will realize the bipolar structure of the nation - Tokyo

and Osaka.

Regional Level:

It _{is necessary to establish the new urban plan and its infrastructures which are}

fitted for the use for long period, say 100 - 200 years.

It is also required to build up the regional organization for the environmental

management of the Osaka Bay area so that the purity of sea water and the ecology system in the bay can be recovered from the situation facing death.

Community and Human Level:

It is required to offer advanced environment with higher amenities to the

community, to renovate functions of city area and to restore the beaches of the

area for increasing the self-cleaning capability.

3. ROLES OF MARINE CORRIDOR

The marine corridor is to be possessed of specific roles as follows:

Base for Global Human Interface

Marine corridor will support activities to promote human relations and cooperation

between people living/working in the bay area. It will also support the exchange

of ideas and knowledge, consolidation of complementary system in technology,

cooperation in creating research and development projects. These activities are to

be performed by people and information coming from inside and outside of the bay

area. The marine corridor will become the assembly place

of people and

information and will play important roles as the base of global human interface.

Advanced Base for Information

Massive information accumulatedin the Kansai area and those which have been collected through the cooperation system deployed in Asia and Pan-Pacific area is

to be transmitted to the whole world.

Base for Creation of New Value

The 21st century's new value is to be created in the marine corridor. The new

value will include way of

development of science and technology in many fields, new phase of international

cooperation, new aspect of regional and urban community, etc.

Starting Point of Creating Unified Land-Sea Environment

As mentioned previously, sea area has been understood as the place for settling

problems of waste disposal from industries and home and for providing open spaces

to promote human activities

and new urban

development of offshore area has been carried out from the viewpoint of the land. However, the prospective developments of offshore area will be the creation of

unified land-sea environment from

the standpoint of the

ecological assessments on the characteristics ot marine area have to be fully taken into consideration.

The main point of the developments of marine area is the utilization of waterfront for providing amenity spaces where people are able to release their mental stress accumulated through their daily life. However, we have to pay special attention

to that the waterfront area plays another very important role in maintaining marine ecology system; purification of sea water, circulation of substance at tidal flats,

incubation of new life of marine plants and animals, and so on.

The role of the Osaka Bay Area Marine Corridor is to create the well-balanced

new marine environments in the Osaka Bay area with consideration of the natural

characteristics of marine area, checking the progress of the destruction of marine

environments and thus the recovery of marine ecology system from the present

situation facing dem.h.

It is needless to say that the marine corridor will have to settle the problems lying

Osaka Bay area such as redevelopment of idle spaces and

acquisition of spaces for new activities. So that, the marine corridor is understood

to be the common integrated infrastructure for the bay area cities: Osaka, Kobe,

etc. as well as for the surrounding areas: Awaji Island, Kihoku district. etc.

e. Base for Creating New Life-style and Culture

It is well known that the sea always incubates something new, and gives a free

space to the human beings today for their mental freedom. The marine corridor

will make use of this special property and provide new spaces for people's social

and cultural environment, such as society for artistic, cultural and intellectual activities through face-to-face communication, new phase of social-welfare for the people living and working in the area, mixed society for the people from different

area of the world, and so on.

it PILOT PLAN OF MARINE CORRIDOR AND ITS ENVIRONMENTAL

CONSIDERATION

4.1 Corridor Line

The corridor line system involves linear-motor driven traffic system, cargo

transportation system, communication network system, energy transportation system, water supply and drainage system, etc. as stated previously. For the environmental consideration, it has functions of tide control, water purification, etc. And, systems

for the incubation of marine plants and fishes are installed on its outside shell. The

outline of the corridor line is illustrated in Fig. 2.

Security Space Reserved Space Linear Train (Passenger) Linear Train (Vehicle)

Ventilation Pipeline Linear Train (Cargo)

Water Jet Line

Water Supply Pipeline

Information Communication System

Fig. 2 Pilot plan of Corridor Line

Gas Pipeline Power Supply Line Linear Train (Vehicle) Linear Train (Cargo) Petroleum Pipeline Sewage Pipeline

4.2 Corridor Link(CL)

Each of the corridor links at eight typical position in the Osaka Bay area shown in

Fig. 1 has its own distinctive features. The Osaka CL is distinguished for that it will

become a domestic and international prototype of the research collaboration base on global environment, and the Sakai CL will feature in the centerof the world business

for example., The pilot plan of the corridor link is shown in Fig. 3.

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Inland Sea of Japan

(Setonalk0) _{Intellectual Capital} Kansai's Institution isuna Awali Island Sumoto !CORRIDOR LINK Regional Terminal 01310l)

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Osaka Bay City Facilities & Environment

Management Base OSAKA BAY New Industry Development & Support Base New Environment Creation Base (Eco-land) International Terminal KOBE 1-lanshin Senshu Kihoku

Fig. 3 Pilot plan of Corridor link

4.3 Environmental Consideration in the Marine Corridor

As mentioned previously, full consideration of the marine environments of the bay is taken into the marine corridor plan. This consideration is one of the most important

point of the marine corridor plan and

recovering the delicate balance of the earth system or

amenity in another word.

(1) Sea Water Purifying System (Fig. 4)

In the Corridor line, a high-speed water jet system is to be installed to circulate

stagnant sea water as well as the aeration system to supply oxygen to the sea water. In the corridor link, a system using permeable membrane will be introduced to check the organic substance and found effluent as well as a system using the aeration

system. People are to be accepted to visit the facilities where they can enjoy and

Global Environment Research Base Sakal,Senboku Global Industry Development & World Business 'CORRIDOR LINE! ocr

Underwater Viewing Point

Fig. 4 Sea Water Purifying System

(2) Dredging and Processing System for Sludge (Fig. 5)

Removal of sludge piled-up on the sea bottom of inland sea area is the most urgent

and imponant for marine environment. _{In the marine corridor system, robot system}

1

Robot System for Sludge Collection _ i Research -7-Facilities

Ii

Fig. 5 Sludge Dredging and Processing System

Visitor's Tour Capsule

will be operated to collect sludge piled up on the sea bottom, and the collected sludge will be processed to produce structural materials, man-made rocks for fish bed, etc.

Visitors will be welcomed to the facilities to study the importance of maintaining

marine environments.

(3) City Functions for the Best Utilization of Marine Environment

Many functions for the utilization of marine area from the view point of sea are to

be introduced in the plan, such as the science and amusement park for people where

guided underwater tour will be organized to satisfy visitors with studying marine

ecology, the institute of marine science where research works on improvement, creation

and development of marine environments are carried out systematically, for example. 5. CONCLUDING REMARKS

In the present paper, the authors proposed the "Osaka Bay Area Marine Corridor

Plan".

The investment in this huge project will have repercussions on the economic progress,

increase of employment opportunities, progress of high-technology as well as the

creation of new aspects of marine environments.

The more significant effect induced by the marine corridor after completion will leads people, articles and information to the formation of cooperative network system in the levels of regional, domestic and international. Furthermore, visible and invisible

effects are expected.

For the global amenity, the most important part of the marine corridor system is that it is planned from the standpoint of the sea.

There are several problems still lying in front of us. They are

Popularization of the concept of mitigation, and systematization it in the social

system.

Integration of technologies on improvement, creation and development of marine

environments.

Promotion of prototype of marine city model in the inland sea area.

The authors believe that the "Osaka Bay Area Marine Corridor" will be a "land-mark" or "sea-mark" for the coming 21st century's global amenity.

The authors wish to express their sincere thanks to all the members of the Research Committee for Encouraging Vitality of the Osaka Bay Area for their vital cooperation to the Marine Corridor Project.