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High-resolution observations of dynamic phenomena give insight intoproperties and processes that govern the low solar atmosphere. We present theanalysis of jet-like phenomena emanating from a penumbral foot-point in activeregion (AR) 12192 using imaging and spectral observations from the InterfaceRegion Imaging Spectrograph (IRIS) and the Atmospheric Imaging Assembly (AIA)on board the Solar Dynamics Observatory. These jets are associated withline-of-sight (LoS) Doppler speeds of $\pm$ 10-22 km s$^{-1}$ and bright frontswhich seem to move across the Plane-of-Sky (PoS) at speeds of 23-130 kms$^{-1}$. Such speeds are considerably higher than the expected sound speed inthe chromosphere. The jets have signatures which are visible both in the cooland hot channels of IRIS and AIA. Each jet lasts on average 15 minutes andoccur 5-7 times over a period of 2 hours. Possible mechanisms to explain thisphenomenon are suggested, the most likely of which involve p-mode or Alfv\' enwave shock trains impinging on the transition region (TR) and corona as aresult of steepening photospheric wavefronts or gravity waves.

Multiwavelength Imaging and Spectral Analysis of Jet-like Phenomena in a Solar Active Region Using IRIS and AIA