Which mechanism dictates fjord sill depth controlling deep water renewal in a stratified fjord?

💡 Explanation

When isostatic rebound exceeds eustatic changes after glacial retreat it forms bathymetric sills, because differential uplift raises the land faster than sea level rises, creating shallow entrances restricting water exchange. Isostatic rebound, therefore dictates fjord sill depth, rather than ice plucking, tectonic movement or meltwater, all relating to other geographical properties.

• Which mechanism causes loess deposition next to glacial outwash?
• Which phenomenon causes arc volcanism when an oceanic plate subducts beneath a continental plate?
• Which outcome occurs when repeating moderate shear stress oscillations along tectonic faults reaching a critical instability threshold?
• Which process causes the stratification of grain sizes within an alluvial fan deposit?
• Which outcome primarily results when tectonic subsidence forms a deep lake basin in a humid region?
• Which risk increases significantly when freeze-thaw cycles accelerate solifluction rates on arctic construction sites?