Completed in Aug. 2009, Using Googleearth, AutoCAD and Photoshop Urban scenario
New London
In the past, the major cities in the world were mainly distributed in the coastal areas of continents. Today, the sea level has averagely risen by approximate 25 meters, which means most of these cities were flooded. These flooded city zones is classified as the second class land, and new urban systems are built on the ruins of existed city spaces. This essay will take London, which was threatened by tidal flood for long and eventually submerged by the middle of this century, as an example to further discuss the urban regeneration process.
Greater London is in the Thames basin. Inner London, the lowest area, locates in center, surrounded by outer London, the higher areas. Therefore, when North Sea in-welled into the basin, the Inner London was completely drowned. At the same time, the Outer London was transformed to an archipelago system, made of twenty-nine isles in different sizes. These remaining islands became the most primary human settlements, on the other hand, 83% lands in London were submerged by the sea water. In the flooded part, taking the different depth of the sea water and the underwater topography as parametres, water areas are divided into three categories, according to the difficulty for reusing. The remaining islands and the places where used to be open spaces and high grounds now become community area, as they are easiest to rebuild new architecture. The areas with dense buildings, where are relatively hard to reuse, become energy supply field. And the new traffic system are built on the places used to be rivers and roads.
Fig.1 Transform of urban space
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