Overburden Corrections for CosmoALEPH

The determination of the decoherence curve from coincidence rates between the different CosmoALEPH stations requires amongst others corrections also one for different overburdens which affect the measured rates. This note describes the calculation of the overburden corrections based on a simple parametrization of the muon flux at sea level and a simple propagation model for muons through the overburden. The results are expressed as corrections to a reference muon flux at a depth of 320 mwe below surface.