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Abridged. The bright-rimmed cloud IC1396N hosts CO, H$_2$, and Herbig-Harooutflows powered by millimetre compact sources. We aim to characterise thekinematics and physical conditions of the H$_2$ emission features spread overIC1396N, which appear as chains of knots with a jet-like morphology, tracingdifferent H$_2$ outflows, and to obtain further information about (and anidentification of) the driving sources. Low-resolution, long-slit near-infraredspectra were acquired with NICS at the TNG, using grisms KB (R~1200), HK and JH(R~500). Several slit pointings and PA were used throughout IC1396N to sample anumber of the H$_2$ knots previously detected in deep H$_2$ 2.12 $\mu$m images.The knots exhibit rich ro-vibrational spectra of H$_2$, consistent withshock-excited excitation, from which radial velocities and relevant physicalconditions of the IC1396N H$_2$ outflows were derived. These also allowedestimating extinction ranges towards several features. [FeII] emission was onlydetected towards a few knots, which also display unusually large H$_2$ 1-0S(3)/S(1) flux ratios. The obtained radial velocities confirm that most of theoutflows are close to the plane of the sky. Nearby knots in the same chainoften display different radial velocities, both blue-shifted and red-shifted,which we interpret as due to ubiquitous jet precession in the driving sourcesor the development of oblique shocks. One of the chains (strand A) appears as aset of features trailing a leading bow-shock structure consistent with theresults of 3-D magneto-hydrodynamical models. Either side of the leadingbow-shock (A15) exhibits a different radial velocity, whose possibleexplanations are discussed in the paper. Our data cannot confirm whetherstrands A and B have both been originated by the intermediate mass youngstellar object BIMA 2.

NIR spectroscopic survey of protostellar jets in the star forming region IC 1396N