parcel method

A method of testing for instability in which a displacement is made from a steady state under the assumption that only the parcel or parcels displaced are affected, the environment remaining unchanged.

Related terms:

• slice method
• air parcel
• corona method
• hyperbolic distribution method
• porphyroclast aspect ratio method
• three-point method
• protactinium-ionium age method
• Thiessen polygon method
• induction method
• California method