pastas.stats.signatures.fall_rate#

pastas.stats.signatures.fall_rate(series: pandas.Series, normalize: bool = False, rolling_window: str | None = '7D') → float#

Mean negative head changes from one day to the next.

Parameters:

  • series (pandas.Series) – Pandas Series with DatetimeIndex and head values.

  • normalize (bool, optional) – normalize the time series to values between zero and one.

  • rolling_window (str, optional) – Rolling window to use for smoothing the time series. Default is 7 days. Set to None to disable. See the pandas documentation for more information.

Returns:

Mean of negative head changes from one day to the next. The units of the fall rate are L/day (L defined by the input).

Return type:

float

Notes

Mean rate of negative changes in head from one day to the next, according to Richter et al. [1996].