Download sedimentation rate calculation sheet (Excel)

　The formula for Stokes sedimentation is now available in an excel sheet. Entering seawater and particle density, and temperature (viscosity depends on temperature), the sedimentation rate for each particle size can be calculated. It can also be output as a double-logarithmic graph. The yellow cells indicate where to enter numerical values in Excel, and the orange cells indicate where to output them.

　Each person should enter the size of the phytoplankton, the size of the phytoplankton community, the number of attached mineral particles, and the density, and calculate how fast the particles will sediment. Incidentally, the size of mineral particles deposited from the atmosphere to the ocean generally falls in the range of 1 to 5 μm in radius (the most common is about 2 μm).