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abarbour
kitagawa:Spectral Response of Water Wells to Harmonic Strain and Pressure Signals
Provides tools to calculate the theoretical hydrodynamic response of an aquifer undergoing harmonic straining or pressurization, or analyze measured responses. There are two classes of models here, designed for use with confined aquifers: (1) for sealed wells, based on the model of Kitagawa et al (2011, <doi:10.1029/2010JB007794>), and (2) for open wells, based on the models of Cooper et al (1965, <doi:10.1029/JZ070i016p03915>), Hsieh et al (1987, <doi:10.1029/WR023i010p01824>), Rojstaczer (1988, <doi:10.1029/JB093iB11p13619>), Liu et al (1989, <doi:10.1029/JB094iB07p09453>), and Wang et al (2018, <doi:10.1029/2018WR022793>). Wang's solution is a special exception which allows for leakage out of the aquifer (semi-confined); it is equivalent to Hsieh's model when there is no leakage (the confined case). These models treat strain (or aquifer head) as an input to the physical system, and fluid-pressure (or water height) as the output. The applicable frequency band of these models is characteristic of seismic waves, atmospheric pressure fluctuations, and solid earth tides.
Maintained by Andrew J. Barbour. Last updated 1 years ago.
harmonic-strainsseismic-wavesseismometerstrainstrainmeterwater-levelwater-well
10.0 match 3 stars 4.91 score 27 scripts
dannycbowman
hht:The Hilbert-Huang Transform: Tools and Methods
Builds on the EMD package to provide additional tools for empirical mode decomposition (EMD) and Hilbert spectral analysis. It also implements the ensemble empirical decomposition (EEMD) and the complete ensemble empirical mode decomposition (CEEMD) methods to avoid mode mixing and intermittency problems found in EMD analysis. The package comes with several plotting methods that can be used to view intrinsic mode functions, the HHT spectrum, and the Fourier spectrum.
Maintained by Daniel C. Bowman. Last updated 2 years ago.
3.6 match 2 stars 2.60 score 33 scripts 2 dependents
gillian-earthscope
IRISMustangMetrics:Statistics and Metrics for Seismic Data
Classes and functions for metrics calculation as part of the 'EarthScope MUSTANG' project. The functionality in this package builds upon the base classes of the 'IRISSeismic' package. Metrics include basic statistics as well as higher level 'health' metrics that can help identify problematic seismometers.
Maintained by Gillian Sharer. Last updated 3 months ago.
0.5 match 1 stars 1.43 score 27 scripts