Voluntary immobility despite hazard: a case of Jamuna floodplain in Bangladesh

Nahin, Khadiza Tul Kobra; Islam, Sumaiya Binte; Ahmed, Sahika; Mondal, M. Shahjahan; Murshed, Sonia Binte; Nowreen, Sara

doi:10.1007/s10708-022-10820-3

Cited by 3 publications

(1 citation statement)

References 48 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Many communities reside in the unprotected, low‐lying, riverside floodplains, which are flooded by the river water overtopping the banks. Such communities are exposed and vulnerable even to the flood events associated with low return periods (Haque et al, 2019; Nahin et al, 2022). Due to climate change, land use change and riverbed siltation, flood events are becoming increasingly unpredictable and severe.…”

Section: Study Areamentioning

confidence: 99%

Effectiveness of UAV‐based DTM and satellite‐based DEMs for local‐level flood modeling in Jamuna floodplain

Iqbal

Mondal

Veerbeek

et al. 2023

J Flood Risk Management

Self Cite

View full text Add to dashboard Cite

Open‐source, satellite‐based digital elevation models (DEMs) are widely used for flood modeling. However, studies on effectiveness of these DEMs in depicting local‐level flood processes are limited. This study generated a high‐resolution digital terrain model (DTM) based on unmanned aerial vehicle (UAV) photogrammetry and used in a two‐dimensional (2D) hydrodynamic model (HEC‐RAS) to simulate the flood processes in a floodplain environment of the Jamuna River in northern Bangladesh. The effectiveness of a few satellite‐based DEMs was also compared with this DTM by using the DEMs in the same hydrodynamic model. Field data for two flood seasons were collected to develop the model. The results indicate that the 2D model with UAV‐based DTM provides the flood parameters, such as flood arrival time, depth, duration and extent, better than those from the satellite‐based DEMs. Of the open‐source DEMs, the FABDEM and the WorldDEM™ have the least errors and provide better results compared to the SRTM30, ALOS PALSAR, and ASTER DEMs. The UAV technique with ground control points and field measurements for the tree‐canopy and water areas is very useful in generating a fit‐for‐purpose DTM. The findings of this study would be useful for terrain generation and DEM selection for local‐level flood modeling elsewhere.

show abstract

Section: Study Areamentioning

confidence: 99%