Thu, Dec 28, 2000 page11

• What has Japan done since the Kobe earthquake?

  Many are surprised by how quickly the city has rebuilt itself after being hit by a massive earthquake in 1995. Survivors are working to preserve a record of the incident and scientists hope new technology will prevent any future quakes from having such a devastating effect

  • By Chiu Yu-tzu / STAFF REPORTER IN HYOGO
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  Residents of Kobe, Japan, have been sending out "Kobe 2001 -- Thanks and Welcome" postcards to invite people from around the world to this reborn city, nearly five years after it was seriously damaged by a devastating earthquake in January 1995.

  At Phoenix Plaza (不死鳥會館), a museum near Kobe train station, countless photographs show the damage inflicted by the earthquake. The plaza, housing a long-term exhibition about the Kobe earthquake, which measured 7.2 on the Richter scale, serves as a reminder of the awesome power of nature.

  

  Nojima Fault Preservation Museum.

  PHOTO: CHIU YU-TZU, TAIPEI TIMES

  The Kobe earthquake claimed the lives of at least 6,400 people from Kobe City and the surrounding region. Tens of thousands lost their homes. The natural disaster caused losses to the Japanese economy estimated to exceed US$100 billion.

  

  In Nojima Fault Preservation museum, visitors can easily observe the displacement of the fault, which made violent movements, causing the dislocation of hedges and the destruction of roads.

  PHOTO: CHIU YU-TZU, TAIPEI TIMES

  Almost six years after the disaster, however, the image of the devastated Kobe presented in the exhibition is totally different from the reality outside the museum. The modern buildings and quick tempo of city life cause visitors to marvel that post-disaster reconstruction has been carried out so quickly and effectively.

  Volunteers at Phoenix Plaza are helping residents to draw postcards or write invitation cards. The festival, called "Kobe 21st Century Restoration Commemorative Project," is scheduled to start on Jan. 17, exactly six years after the earthquake.

  

  Kobe residents express their appreciation.

  PHOTO: CHIU YU-TZU, TAIPEI TIMES

  The volunteers said that it was time for the residents of Kobe to show their appreciation to people everywhere who assisted them after the earthquake.

  

  Thanks and welcome cards sent by Kobe residents to thank people around the world for their help after the Kobe quake in 1995.

  CARDS COURTESY OF CITY OF KOBE

  Museum on Awaji Island

  A joyful rebirth seems to have occurred after a persistent fight against despair. The earthquake, nevertheless, remains a poignant memory for most of those who experienced it.

  Death and destruction were not the only legacies of what has become known as the Great Hanshin-Awaji Earthquake Disaster (阪神淡路大震災). It also taught its terrorized survivors how difficult, and yet how crucial, it is to learn to live with the forces of nature, which are capable of releasing dreadful energy without notice.

  Before the earthquake, which jolted the Kinki (近畿) area of Japan, the Japanese people did not know that part of the Nojima Fault (野島斷層) lay deep underground in Hokudan-cho (北淡町) on Awaji Island (淡路島).

  During the quake, officially known as the Southern Hyogo earthquake (兵庫縣南部地震), a 10km-long hidden stretch of the Nojima Fault was discovered.

  In order to preserve the dramatic changes to the topography on Awaji Island caused by the tremor, the Japanese transformed the site, located in the Hokudan-cho earthquake Memorial Park, into the Nojima Fault Preservation Museum.

  About 140m of the newly exposed fault line have been preserved and are displayed at the museum's site. The museum has been designated a state-owned property.

  "We built the museum as a reminder, which would be helpful to the fields of both scientific research and disaster prevention work. So far, the number of visitors has exceeded 4.6 million," said Hatsuo Hirata (平田一男), director of the museum.

  Visitors can also see explanatory displays, including large panels, models and a miniature theater.

  "Japanese scientists have known that the topography of the center of the Kinki area is complex. It includes low lying areas such as Lake Bewa, Osaka Bay and the Kyoto and Nara basins, as well as high mountains such as the Hira, Ikoma and Rokko ranges," said Tomoko Kawayoshi (川吉知子), an interpreter for the museum.

  Kawayoshi said although the Kobe earthquake occurred in the region, where a complex system of active faults had been mapped, the discovery of the missing part of the Nojima Fault still taught people a lesson.

  "No matter what, the serious damage caused by the Kobe earthquake has made Japanese people take disaster prevention more seriously. That's why we have this museum," Kawayoshi said.

  In the museum, visitors can easily observe the displacement of the fault, which made violent movements, causing the dislocation of hedges and the destruction of roads. A trench provides a good opportunity for visitors to see the actual profile of the fault close-up. It shows a section of strata, exposed down to 2.5m below the earth's surface.

  A house, standing right on the fault line, is also preserved and open to the public. Its interior is arranged to show the results of the Kobe earthquake, leaving future generations to understand what occurred. A kitchen damaged by the earthquake is reproduced based on oral evidence.

  "The house standing on the fault line was not torn apart during the disaster. The owners of the house stayed in the house for more than three years after the quake," Kawayoshi said.

  Kawayoshi said that the case inspired Japanese engineers to design stronger quake-resistant buildings and call for the tightening of building regulations.

  Currently, the museum is maintained and operated by 75 staff from several groups in Hokudan Town.

  "We hope to keep the evidence to remind people of the importance of disaster prevention," director Hirata said.

  Outside the museum, a pyramid-shaped "memorial for the repose of souls" faces the sunset. Hirata said that it was established as a symbol not only for the repose of lost souls. "It also prays for the surviving inhabitants here," Hirata said.

  Shaking Table

  For Japanese scientists, a more forward-looking, optimistic way to address the specter of the earthquake damage was to improve construction technology.

  The destruction of 690,000 buildings, damaged completely or partially during the Kobe earthquake, led scientists to believe that they had a poor understanding of ground motion characteristics.

  One message that came through from an engineering perspective was that the engineering profession has much to learn about the effects of massive stress on structures.

  Although Japanese scientists have been capable of conducting computer simulations of the shaking motion of houses during earthquakes, the Kobe earthquake convinced them that it was necessary to build a large shaking table (震動平台) to conduct three-dimensional full-scale earthquake testing.

  Shaking tables are used by scientists around the world to simulate and test the effects of seismic activity on buildings and other structures.

  "In order to improve the capacity of buildings to resist dramatic shaking during earthquakes, we persuaded the government to spend money on building the shaking table for further studies," said Tsuneo Katayama (片山恆雄), director general of the Japan National Research Institute for Earth Science and Disaster Prevention Science and Technology Agency.

  Construction of the table, located in Miki City, to the north of Kobe City, started in 1999. It is scheduled to be complete in 2005, a decade after the Kobe earthquake. By then, Japan will have spent at least ?40 billion (US$353 million) on it. The foundations of what will be the world's largest shaking table, 20m long by 15m wide, are about thirty percent complete.

  The shaking table will make it possible to test real buildings until they collapse. Such experiments will help engineers to improve earthquake-resistant designs.

  "In the future, we will put a four-storey building, which weighs about 1200 tonnes, on the shaking table to test its performance during different degrees of earthquakes," Katayama said.

  Katayama said that the collapse of buildings and of highway viaducts during the 1995 Kobe earthquake, the 1996 Northridge earthquake in the US, the 1999 921 earthquake in Taiwan and others, showed the vulnerability of modern cities and infrastructures.

  Katayama said that Japan welcomed scientists and engineers from all over the world to visit to carry out full-scale experiments.

  "Although experiments cost a lot, their contribution to the prevention of unnecessary loss of life and property will be invaluable," Katayama said.
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