Prediction of Seawater Flooding Hazard on Settlement Areas in Padang City as a Climate Change Impact using GIS and Remote Sensing Technology

International Conference On Tropical Meteorology And Atmospheric Sciences

生态环境科学;原子能学

Nofrizal, A.Y.^1 ; Rahman, H.^1 ; Hanif, M.^1

Geography Science, Padang State University, Padang

25132, Indonesia^1

关键词: Climate change impact;    Coastal cities;    Flooding hazards;    Gis and remote sensing;    Hazard potential;    Sea level rise;    settlement area;    Statistic modeling;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/303/1/012025/pdf
DOI  :  10.1088/1755-1315/303/1/012025

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

Recently, climate change is becoming the most popular issue in the 20th century. One impact of climate changes is seawater flooding. It occurs in a lowland of coastal area. One of coastal cities that will have impact of sea level rise is Padang City. This is because part of Padang's morphology is a lowland and constrained by the sea. This research aims to analyse and to predict hazard potential of seawater flooding, especially on settlement areas. Statistic model used was GIS and Remote Sensing. DEM classification, representing altitude of Padang City, was used to predict sea level rise. Land change modeler is used to predict settlement areas development, and to calculate impact of flooding on settlement areas. The result showed that there is a sea level rise of 2.8 m, causing seawater flooding in 2500. It also predicts that settlement will cover area of 22,522 ha in 2500. The settlement area impacted by seawater flooding was 1,322 ha. A subdistrict had the highest risk of being drown was Koto Tangah with affected area of 1,026 ha, while the lowest one was Lubuk Begalung with affected area of 6 ha.