Pustaka Ilmiah Universitas Padjadjaran

Abstrak

Climate-geological Framework Of Indonesian Region And Landslide Prone Areas

Indonesia has strategic position. It lied in tropic region, between Asian-Australian continents, also between Pacific-Hindia oceans. This country consists of thousands of islands; lie alongside from west to east. Many straits and gulfs found in here. So, Indonesian region is vulnerable toward climate change. In Indonesian region, the climate is influenced by global and regional phenomena (BMKG, 2009). The global phenomena are El Nino, La Nina, Dipole Mode (DM), and Madden Julian Oscillation (MJO). Whereas regional phenomena namely circulation of Asia-Australia monsoon, Inter Tropical Convergence Zone (ITCZ) as area of cloud growth, and sea-front temperature in Indonesian surrounding. The topography of Indonesian land which mountainous, valleys, and many coasts, constitute local phenomena that enhance various climate, according spatial as well as time. The result of data analysis during 30 years (1971-2000), there are 293 climate patterns in Indonesian. The 220 patterns as season zone, which own sharp differentiation between period of wet season and dry season (monsoon pattern), whereas another are not season zone. The not season zone area has two times of rain peak in a year (equatorial pattern). In this case, rainfall intensity is high or low along year with wet and dry season duration reverse of season zone area (local pattern).