Discussion

• Mississippi and Po: heaviest deltas per unit area, largest average compaction.

• Godavari: large compaction.

• Mekong: significant sediment weight per unit area, smaller average compaction.

• Krishna and Pearl: small compaction values.

• Chao Phraya and Danube: Lighter deltas per unit area, small average compaction

Conclusion

Large variability in compaction and specific weight distribution from case to case.

• Natural compaction plays a significant role on the delta environment evolution, with the largest values computed for the Mississippi and Po deltas.

• Quantifying sediment accumulation and natural compaction is not trivial. It requires a deep knowledge of geomechanical properties of soils and information about delta progradation. These data are often difficult to obtain.

• Future improvements: accounting for more precise information and more specific knowledge of the geomechanical properties of the various deltaic deposits.