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三宝垄是印尼爪哇省首府,人口135万,是印尼第四大城市。三宝垄地形特殊,城市可划分为三个部分,即城市低洼地带,比降小于2%,海拔在0～3.5米之间;高地区域,比降超过15%,海拔在90～348米之间;第三部分为存在于高地和低洼地带之间的面积较为狭小的地带。三宝垄是继雅加达和万隆之后,受地面沉降影响最为严重的城市。明显的地面沉降发现于三宝垄的海滨地区,大多数的海滨地区地面下沉的速率为每年2～8厘米。除此以外,三宝垄
Semarang is the capital of Indonesia’s Java Province with a population of 1.35 million, making it Indonesia’s fourth largest city. Semarang terrain special, the city can be divided into three parts, namely urban low-lying areas, less than 2% lower than the altitude of 0 to 3.5 meters; the highlands, more than 15% drop, at an elevation of 90 to 348 meters ; The third part is the relatively small area between the highlands and low-lying areas. Semarang is the city most affected by land subsidence following Jakarta and Bandung. Significant land subsidence was found in the seashore area of Semarang and the rate of ground subsidence in most of the seaside areas was 2 to 8 cm per year. In addition, Semarang