Sediment Accumulation Potential from Controlled Polder Flooding in the GBM Delta

Simulation results from a calibrated 2D numerical hydromorphodynamic model quantify sediment deposition in re-opened polders under different flow regimes and seasons. The dataset, authored by Md Feroz Islam of Utrecht University, models river-dominated, tide-dominated, and mixed flow conditions for the Ganges-Brahmaputra-Meghna delta in southwest Bangladesh. It assesses the potential of Tidal River Management (TRM) to combat relative sea level rise.

Use Cases

• Compare sediment deposition rates based on seasonal variations (Pre-monsoon, Monsoon, Dry season) described in the study.
• Evaluate Tidal River Management (TRM) efficacy based on modeled flow regimes (river-dominated, tide-dominated, mixed).
• Assess land elevation potential based on simulated sediment deposition rates compared to relative sea level rise.
• Analyze the impact of flow regulation on sediment trapping efficiency described in the results.

Strengths

• Model results compare sediment deposition across three distinct flow regimes and three seasons.
• Quantifies a deposition rate difference of nearly 28 times between tide-dominated and river-dominated regions during monsoon.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count and data format are unknown, which may limit suitability assessment.
• Last update date is unknown; freshness unverified.

Provenance

Source

Utrecht University

Collection Method

Generated via a calibrated 2D numerical hydromorphodynamic model.

Geography

Ganges-Brahmaputra-Meghna delta, southwest Bangladesh