I am a masters student studying the effects of underwater noise on harbour porpoise presence. I have collected noise samples (3min=1 noise level) every 30 min for ~1 week each month over the past year, as well as porpoise presence every minute for the same time periods.
I would like to 'stitch together' the week long data sets for each site (there are 4 sites) and analyse each site separately as a time series, however I have no experience with them and am not sure this is appropriate. I read that you can use one time series to explain the variation in another, so maybe this would be a better approach.
Ultimately, I need to determine whether noise levels have any impact on whether porpoise are present in an area. I appreciate any guidance.