We present \sim 2 ^ { \prime } \times 2 ^ { \prime } spectral-maps of Orion BN/KL outflows taken with Herschel at \sim 12 ^ { \prime \prime } resolution .
For the first time in the far-IR domain , we spatially resolve the emission associated with the bright H _ { 2 } shocked regions “ Peak 1 ” and “ Peak 2 ” from that of the Hot Core and ambient cloud .
We analyze the \sim 54-310 \mu m spectra taken with the PACS and SPIRE spectrometers .
More than 100 lines are detected , most of them rotationally excited lines of ^ { 12 } CO ( up to J =48-47 ) , H _ { 2 } O , OH , ^ { 13 } CO , and HCN .
Peaks 1/2 are characterized by a very high L ( CO ) / L _ { FIR } \approx 5 \times 10 ^ { -3 } ratio and a plethora of far-IR H _ { 2 } O emission lines .
The high- J CO and OH lines are a factor \approx 2 brighter toward Peak 1 whereas several excited H _ { 2 } O lines are \lesssim 50 \% brighter toward Peak 2 .
Most of the CO column density arises from T _ { k } \sim 200-500 K gas that we associate with low-velocity shocks that fail to sputter grain ice mantles and show a maximum gas-phase H _ { 2 } O/CO \lesssim 10 ^ { -2 } abundance ratio .
In addition , the very excited CO ( J > 35 ) and H _ { 2 } O lines reveal a hotter gas component ( T _ { k } \sim 2500 K ) from faster ( v _ { S } > 25 km s ^ { -1 } ) shocks that are able to sputter the frozen-out H _ { 2 } O and lead to high H _ { 2 } O/CO \gtrsim 1 abundance ratios .
The H _ { 2 } O and OH luminosities can not be reproduced by shock models that assume high ( undepleted ) abundances of atomic oxygen in the preshock gas and/or neglect the presence of UV radiation in the postshock gas .
Although massive outflows are a common feature in other massive star-forming cores , Orion BN/KL seems more peculiar because of its higher molecular luminosities and strong outflows caused by a recent explosive event .