  We introduce the motivic coniveau exact couple of a smooth scheme, in the
framework of mixed motives, whose property is to universally give rise to
coniveau spectral sequences through realizations. The main result is a
computation of its differentials in terms of residues and transfers of mixed
motives, with a formula analog to the one defining the Weil divisor of a
rational function. We then show how to recover and extend classical results of
Bloch and Ogus for motivic realizations.
