Displacement is often written with this capital letter and x, symbolizing a change in position.
A kind of "switching" described by this word refers to the formation of a new river channel during avulsion. This letter names a function that is zero everywhere except at zero and has an integral of one over the real numbers. In chemistry, this type of bond is usually found in organometallic species or excited pi antibonding orbitals, and this letter denotes (*) partial charges for atoms in a molecule. Cuspate, arcuate, and bird-foot are ways to describe hydrological features with this name. Displacement is often written with this capital letter and x, symbolizing a change in position. For ten points, identify this greek letter symbolized by a triangle.
A kind of "switching" described by this word refers to the formation of a new river channel during avulsion.
delta [accept specifics like delta switching, Dirac delta function, delta bond, river delta]