openquake.hmtk.seismicity.smoothing.kernels package

Submodules

openquake.hmtk.seismicity.smoothing.kernels.base module

Module openquake.hmtk.seismicity.smoothing.kernels.base implements the abstract base class for the smoothing kernels

class openquake.hmtk.seismicity.smoothing.kernels.base.BaseSmoothingKernel

Bases: object

Abstract Base Class to smooth a grid according the sets of regular smoothing kernels

smooth_data(data, config)

Applies the smoothing Kernel

Parameters:

• data (numpy.ndarray) – Earthquake grid counts in the form [Longitude, Latitude, Depth, Count] where Longitude, Latitude and Depth correspond to the mid-points of each cell!
• config (dict) – Algorithm configuration parameters

openquake.hmtk.seismicity.smoothing.kernels.isotropic_gaussian module

Module openquake.hmtk.seismicity.smoothing.kernels.isotropic_gaussian imports openquake.hmtk.seismicity.smoothing.kernels.isotropic_gaussian.IsotropicGaussian the simple isotropic Gaussian smoothing kernel as described by Frankel (1995)

Frankel, A. (1995) Mapping Seismic Hazard in the Central and Eastern United States. Seismological Research Letters. 66(4) 8 - 21

class openquake.hmtk.seismicity.smoothing.kernels.isotropic_gaussian.IsotropicGaussian

Bases: openquake.hmtk.seismicity.smoothing.kernels.base.BaseSmoothingKernel

Applies a simple isotropic Gaussian smoothing using an Isotropic Gaussian Kernel - taken from Frankel (1995) approach

smooth_data(data, config, is_3d=False)

Applies the smoothing kernel to the data

Parameters:

• data (np.ndarray) –

  Raw earthquake count in the form [Longitude, Latitude, Depth,

  Count]

• config (dict) – Configuration parameters must contain: * BandWidth: The bandwidth of the kernel (in km) (float) * Length_Limit: Maximum number of standard deviations

Returns:

• smoothed_value: np.ndarray vector of smoothed values
• Total (summed) rate of the original values
• Total (summed) rate of the smoothed values

Module contents