Remote sensing spatial analysis of waterlogging due to cyclones and storms in Bangladesh
| Autor: | Huda, Nazmul, Terao, Toru, Nonomura, Atsuko, Suenaga, Yoshihiro |
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| Jazyk: | angličtina |
| Rok vydání: | 2022 |
| Předmět: | |
| Zdroj: | 香川大学インターナショナルオフィスジャーナル. 14:269-277 |
| ISSN: | 1884-8745 |
| Popis: | application/pdf Ground impacts of seasonal natural hazards, such as cyclones and storms, are enormous in the Bengal delta. This remote sensing study aims to estimate the intensity of inundation on physical settlement generated from two cyclones and one storm between 2007 and 2019 based on 2,282 mauzas or villages between inland and coastal districts in the southwest of Bangladesh (SWB). Based on reliable secondary data such as Landsat observations, elevations, physical settlement, and mauzas, it appeared 348.8 km² of the coastal and 26 km² of the inland district was either high‐risk or risk zone of waterlogging due to the cyclone in 2007. Similar waterlogging risks were observed around 399.6 and seven km² in the respective districts from the convective storm in 2012. The cyclone in 2019 generated the lowest risk compared to the others in both districts. For the cyclone, 891 and 395 mauzas in inland and coastal districts, respectively, were appeared without any surface water. The inundated area in the mauzas>50% water pixel was enlarged in the inland but reduced in the coastal by the cyclone in 2019 compared to storm in 2012. The study provided the credibility to investigate village‐level waterlogging risks generated from cyclones and storms in the coastal area of Bangladesh. |
| Databáze: | OpenAIRE |
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