Solubility of aragonite in seawater—II. Effect of pressure on the onset and maintenance of dissolution

The apparent solubility product (K'_sp) of aragonite in a variety of seawater compositions has been determined at pressures from 0 to 1019 atm and a nomogram developed to allow the determination of the K'_sp when the apparent ion product (AIP) at one atmosphere and the collection depth of a water sample are known.This nomogram provides a basis from which the onset of aragonite dissolution can be determined for conditions representative of aragonite sedimentation through the changing water masses of the open ocean.