Floodplain Simulation Using Sub-Grid Bathymetry: Case Study of Broken River Basin, Australia

Publish Year: 1400
نوع سند: مقاله کنفرانسی
زبان: English
View: 134

This Paper With 11 Page And PDF Format Ready To Download

  • Certificate
  • من نویسنده این مقاله هستم

استخراج به نرم افزارهای پژوهشی:

لینک ثابت به این Paper:

شناسه ملی سند علمی:

ICSAU07_0072

تاریخ نمایه سازی: 21 دی 1400

Abstract:

Flood modeling is a critical subject to provide reliable information about runoff data of a region and risk management. In this research, Victoria state floods of ۲۰۱۲ have been modeled by implementing a sub-grid bathymetry method not only to reduce heavy computations but also to prevent oversimplification. Using elevation models and Broken River basin along with precipitation data from the mentioned disaster, a ۲-dimensional model has been generated to depict the runoff movement toward downstream of the basin. With sub-grid method discretization, mass and momentum conservation equations are implemented inside each cell, resulting in the direction, speed, and volume of fluid moving from each cell to another in ۱-Hour time intervals. The model generated for simulating ۷- days of flood in the region and the validation of each day has been done with confusion matrix and Kappa coefficient, which showed a total rate of ۸۱.۲% in the generated model. The calculated Kappa index expresses high reliability and accuracy in the performed model for further flood modeling in the region based on current land-cover and weather conditions. Therefore, it can be used for future risk maps and disaster management.

Authors

Mohammad Esmaeili

GIS MSc Student at School of Surveying and Geospatial Engineering, College of Engineering, University of Tehran, Tehran, Iran,

Parham Pahlavani

Assistant Prof. at School of Surveying and Geospatial Engineering, College of Engineering,University of Tehran, Tehran, Iran,