Table 2.

Parameters used to calculate the critical Shields parameter during 2017 Hurricanes Irma and Maria for St. John, US Virgin Islands.

Assumed Variables	Assumed or Calculated Value	Units	Derived From
Bed Roughness	0.125	cm	Deigaard73
Grain Size (diameter)	0.05	cm	Brooks et al.45
Seawater Density	1025	kg/m3	Standard value
Sediment specific gravity	2.93	g/cm3	Standard value for aragonite
Seawater viscosity	1.05 × 10−6	m2/s	Standard value