S Banagiri, P Covas, R Schofield

We looked into the adhoc rain pem injection in more detail ( mentioned here before ), using transfer function measurements by Philippe Nguyen with the HAM6 Vac accelerometer. Quantitatively, these predictions show that we somewhat underestimate the noise in DARM during rain using only the HAM6 accelerometer prediction. I attach a plot of a DARM background ASD and DARM during rain plotted in black and red respectively using about 5 minutes of data. Also plotted are the predictions of DARM noise in the 30 - 100 Hz band using the HAM6 Vac accelerometer. The blue curve is the ambient noise prediction and the green curve is the prediction during rain.