Morphometric analysis for flood flow formation feature identification (on example of Ulaanbaatar agglomeration)

Water flows with significant flow rate feature a high destructive force and can lead to catastrophic consequences. Fluvial processes caused by uneven distribution of rain precipitation over the area pose risks to the developed inland foothill territories. The purpose of this study is to carry out a quantitative morphometric analysis of the territory in order to identify the formation features of flood flows. The analysis and ranking of catchment basins are performed using a basin approach. On the basis of SRTM images and the use of stock cartographic material in the GIS program the authors have built specialized electronic maps that allow to obtain quantitative parameters reflecting the morphometry of the basins under analysis including basin geometry, drainage network and terrain relief. On example of the Ulaanbaatar agglomeration territory it is shown how initial morphometric parameters of basins and watercourses (length, width, area, perimeter, erosion dissection, drainage network density, terrain relief coefficient, Melton coefficient, etc.) form the features of flood flow. For developed territories, the initial data on the catchment basin morphometry constitute the basis for compilation of specialized maps to be used in planning and construction. The combination of morphometric indicators on the territory of the Ulaanbaatar agglomeration indicates that there is possibility of large flood formation and development of dangerous mudstone flows in some catchment basins.

1. Jonkman S. N., Penning-Rowsell E. Human instability in floods flows. Journal of the American Water Resources Association. 2008;44(5):1208-1218. https://doi.org/10.1111/j.1752-1688.2008.00217.x.

2. Marchi L., Borga M., Preciso E., Gaume E. Characterisation of selected extreme flash floods in Europe and implications for flood risk management. Journal of Hydrology. 2010;394(1-2):118-133. https://doi.org/10.1016/j.jhydrol.2010.07.017.

3. Ahmadalipour A., Moradkhani H. A data-driven analysis of flash flood hazard, fatalities, and damages over the CONUS during 1996–2017. Journal of Hydrology. 2019;578:124106. https://doi.org/10.1016/j.jhydrol.2019.124106.

4. Diakakis M. A method for flood hazard mapping based on basin morphometry: application in two catchments in Greece. Natural Hazards. 2011;56(3):803-814. https://doi.org/10.1007/s11069-010-9592-8.

5. Bathrellos G. D., Karymbalis E., Skilodimou H. D., Gaki-Papanastassiou K., Baltas E. A. Urban flood hazard assessment in the basin of Athens Metropolitan city, Greece. Environmental Earth Sciences. 2016;75(4): 319. https://doi.org/10.1007/s12665-015-5157-1.

6. Meraj G., Romshoo S. A., Yousuf A. R., Altaf S., Altaf F. Assessing the influence of watershed characteristics on the flood vulnerability of Jhelum basin in Kashmir Himalaya. Natural Hazards. 2015;77(1):153-175. https://doi.org/10.1007/s11069-015-1605-1.

7. Angillieri M. Y. E. Morphometric analysis of Colangüil river basin and flash flood hazard, San Juan, Argentina. Environmental Geology. 2008;55(1):107-111. https://doi.org/10.1007/s00254-007-0969-2.

8. Parveen R., Kumar U., Singh V. K. Geomorphometric characterization of Upper South Koel basin, Jharkhand: a remote sensing & GIS approach. Journal of Water Resource and Protection. 2012;4(12):1042-1050. https://doi.org/10.4236/jwarp.2012.412120.

9. Waikar M. L., Nilawar A. P. Morphometric analysis of a drainage basin using geographical information system: a case study. International Journal of Multidisciplinary and Current Research. 2014;2:179-184.

10. Kleinen T., Petschel-Held G. Integrated assessment of changes in flooding probabilities due to climate change. Climatic Change. 2007;81(3-4):283-312. https://doi.org/10.1007/s10584-006-9159-6.

11. Halmstad A., Najafi M. R., Moradkhani H. Analysis of precipitation extremes with the assessment of regional climate models over the Willamette River basin, USA. Hydrological Processes. 2013;27(18):2579-2590. https://doi.org/10.1002/hyp.9376.

12. Kundzewicz Z. W., Kanae S., Seneviratne S. I., Handmer J., Nicholls N., Peduzzi P., et al. Flood risk and climate change: global and regional perspectives. Hydrological Sciences Journal. 2014;59(1):1-28. https://doi.org/10.1080/02626667.2013.857411.

13. Oyunbaatar D. Floods in Mongolia. Available from: https://www.restec.or.jp/geoss_ap3/pdf/day2/WG/WG2/ Short_Country_Reports/08_Mongolia.pdf. [Accessed 12th August 2021].

14. Seminsky K. Zh., Levi K. G., Dzhurik V. I., Kozyreva E. A., San’kov V. A., Turutanov E. Kh. Hazardous geological processes and forecasting of natural disasters in the territory of Central Mongolia. Irkutsk: Irkutsk State University; 2017. 331 p. (In Russ.).

15. Sato T., Kimura F., Kitoh A. Projection of global warming onto regional precipitation over Mongolia using a regional climate model. Journal of Hydrology. 2007;333(1): 144-154. https://doi.org/10.1016/j.jhydrol.2006.07.023.

16. Saizen I., Tsutsumida N. The rapid development of settlements in flood-prone areas in peri-urban Ulaanbaatar, Mongolia: monitoring and spatial analysis using VHR satellite imageries. In: Banba M., Shaw R. (eds.). Land use management in disaster risk reduction. Tokyo: Springer; 2017. p.137–148.

17. Ashley S. T., Ashley W. S. Flood fatalities in the United States. Journal of Applied Meteorology and Climatology. 2008;47(3):805-818. https://doi.org/10.1175/2007JAMC1611.1.

18. Khishigjargal M., Dulamsuren C., Leuschner H. H., Leuschner C., Hauck M. Climate effects on inter- and intraannual larch stemwood anomalies in the Mongolian foreststeppe. Acta Oecologica. 2014;55:113-121. https://doi.org/10.1016/j.actao.2013.12.003.

19. Horton R. E. Erosional development of streams and their drainage basins; hydrophysical approach to quantitative morphology. Bulletin of the Geological Society of America. 1945;56(3):275-370. https://doi.org/10.1130/0016-7606(1945)56[275:EDOSAT]2.0.CO;2.

20. Horton R. E. Drainage-basin characteristics. Eos, Transactions, American Geophysical Union. 1932;13(1): 350-361. https://doi.org/10.1029/TR013i001p00350.

21. Schumm S. A. Evolution of drainage systems and slopes in badlands at Perth Amboy, New Jersey. Bulletin of the Geological Society of America. 1956;67(5):597-646. https://doi.org/10.1130/0016-7606(1956)67[597:EODSAS]2.0.CO;2.

22. Melton M. A. The geomorphic and paleoclimatic significance of alluvial deposits in southern Arizona. The Journal of Geology. 1965;73(1):1-38.

23. Auzina L. I., Parshin A. V. System-integrated GISbased approach to estimating hydrogeological conditions of oil-and-gas fields in Eastern Siberia. IOP Conference. Series: Earth and Environmental Science. 2016;33: 012060. https://doi.org/10.1088/1755-1315/33/1/012060.