EFFECT OF CLIMATE VARIABILITY TO FLOOD DISASTER IN BANDAR LAMPUNG CITY
Muhammad Amin, Ahmad Tusi, Ridwan
Lampung University
Abstract
The research aims at to analyze climate variability and flood disaster in Bandar Lampung City. The growth of Bandar Lampung City cause increasing of number and population density that imbalances with the availability of existing land. The area of buildings that increased and the green land is that decreased. Reducing of open areas as water catchment areas in Bandar Lampung City resulted rainwater in the area can not be infiltrated and will cause the increasing of runoff water. In addition, the drainage factor worsened the situation, drainage channel capacity as a saving of runoff water is not able to accommodate runoff water so that cause flood incident in Bandar Lampung City getting worse. Most areas have D2 and D3 climate type with wet month of 3-4 months, respectively. In addition, the trend of air temperature variability and increased rainfall will add the frequency of flood disaster in the Bandar Lampung City. Sub-district areas are often submerged: Tanjung Karang Timur (16,76 Ha), Teluk Betung Selatan (16.45 Ha), Panjang District (8.5 Ha), Sukarame (8 Ha). The average height of the puddle is 0.5 meters, the highest inundation occurs in the Ketapang South Teluk Betung neighborhood with a puddle of 1.7 meters, 48-hour pool puddle and frequency 12 times per year. The 48-hour longest flood occurred in Panjang and Teluk Betung South.
Keywords: climate variability, rain trends, flood disaster
Topic: Agricultural structures and environmental engineering