discontinuitypy 0.2.2

A python package for identifying and analyzing discontinuities for time series data.

DiscontinuityPy

User Guide

This package is designed to identify and analyze discontinuities in time series data.

1. Finding the discontinuities, see this notebook
   • Corresponding to limited feature extraction / anomaly detection
2. Calculating the properties of the discontinuities, see this notebook
   • One can use higher time resolution data

For how to use this project as a python library, please see this page.

Installation

pip install discontinuitypy

Getting started

Import the package

from discontinuitypy.utils.basic import *
from discontinuitypy.core import *

Related projects and publications

• Solar wind discontinuities spatial evolution in the outer heliosphere
• Evolution of solar wind discontinuities in the inner heliosphere: PSP and Earth conjunctions and alignments

Properties of Discontinuities

Notations:

• $\vec{B}$ : Magnetic field
• $B$ : Magnetic field magnitude

Outputs

• b_mag : mean of magnetic field magnitude across the discontinuity
• db_over_b : $|\Delta B|/\bar{B}$ , Change in magnetic field magnitude over magnetic field magnitude (mean)
  • see Fig.14 in Tsurutani and Smith (1979)
• rotation_angle : Rotation angle across the discontinuity
  • see Fig.12 in Tsurutani and Smith (1979)
  • see Fig.11 in Söding et al. (2001)
• bn_over_b : $\bar{B}_N/\bar{B}$ : Normal component of magnetic field over magnetic field magnitude (mean)

Söding, A., F. M. Neubauer, B. T. Tsurutani, N. F. Ness, and R. P. Lepping. 2001. “Radial and Latitudinal Dependencies of Discontinuities in the Solar Wind Between 0.3 and 19 AU and -80$^\circ$ and +10$^\circ$.” Annales Geophysicae 19 (7): 667–80. https://doi.org/10.5194/angeo-19-667-2001.

Tsurutani, Bruce T., and Edward J. Smith. 1979. “Interplanetary Discontinuities: Temporal Variations and the Radial Gradient from 1 to 8.5 AU.” Journal of Geophysical Research: Space Physics 84 (A6): 2773–87. https://doi.org/10.1029/JA084iA06p02773.