Andreas Thurnherr : it may surprise that much still unknown about oil 's flow in deep water . In other words , we can `` see '' what is at the surface , but to find out what is going on beneath the waves , we need to put our `` feelers '' out . The oil can be measured , he says , but vagaries of dispersal at depths require research . Thurnherr : Data collection must begin when spill is detected to gauge environmental impact .
Andreas Thurnherr : it may surprise that much still unknown about oil 's flow in deep water . The oil can be measured , he says , but vagaries of dispersal at depths require research . Thurnherr : Data collection must begin when spill is detected to gauge environmental impact .