Skip to main content

Advertisement

Log in

Tropical cyclone risk mapping for a coastal city using geospatial techniques

  • Published:
Journal of Coastal Conservation Aims and scope Submit manuscript

Abstract

Tropical cyclone associated storm surges and their disastrous influences are becoming a major concern amongst the worldwide coastal community. The detailed risk modelling study seems an urgent need to support the storm surge mitigation actions. Using a Geographic Information System (GIS) based risk model, this study attempted to obtain both present and future storm surge wave heights in the Cox’s Bazar Sadar Upazilla in Bangladesh. Linear storm surge model setup was done for the different return periods includes 5, 10, 20, 50, and 100 years. Also, to assess climate change effects, a 0.34 m sea-level rise in 2050 was tested using the regional scale surge models. The simulated storm surge model provided a time series dataset for the risk model and obtained risk maps comprised of the relationship among risk zone and the return periods. With the present inundation depth trend, the acquired risk maps of 50 and 100 year return period showed that 10.13% and 36.4% of the study area belongs to very high-risk zone respectively. Conversely, for future inundation depth conditions 30.83% and 49.9% of the study area would be within a very high-risk zone in 50 and 100 year return period respectively. This is envisaged that a detailed historical inundation dataset could enrich the adopted approach considering both present and future storm surge risk modelling for the Decision Support System (DSS). Also, this approach might be adopted for other identical coastal environments to aid mitigation programs and strategies.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Fig. 1
Fig. 2
Fig. 3
Fig. 4
Fig. 5
Fig. 6
Fig. 7
Fig. 8
Fig. 9
Fig. 10
Fig. 11
Fig. 12
Fig. 13
Fig. 14
Fig. 15

Similar content being viewed by others

References

Download references

Acknowledgments

The research was supported by the funds provided for Modeling Flood Inundation in a Coastal urban area (MFIC) research project (CUET/DRE/2017-18/CE/025), Chittagong University of Engineering and Technology (CUET), Bangladesh. We express our gratitude to the Cox's Bazar community, BWDB, CPA, BMD for providing bathymetric, meteorological, and validation data during the study.

Author information

Authors and Affiliations

Authors

Corresponding author

Correspondence to Aysha Akter.

Additional information

Publisher’s note

Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.

Rights and permissions

Reprints and permissions

About this article

Check for updates. Verify currency and authenticity via CrossMark

Cite this article

Akter, A., Dayem, A. Tropical cyclone risk mapping for a coastal city using geospatial techniques. J Coast Conserv 25, 1 (2021). https://doi.org/10.1007/s11852-020-00788-y

Download citation

  • Received:

  • Revised:

  • Accepted:

  • Published:

  • DOI: https://doi.org/10.1007/s11852-020-00788-y

Keywords

Navigation