3.5. quakemigrate.plot

The quakemigrate.plot module provides methods for the generation of figures in QuakeMigrate, including:

Event summaries

Phase pick summaries

Triggered event summaries

Amplitude / local magnitude summaries

copyright: 2020–2023, QuakeMigrate developers.
license: GNU General Public License, Version 3 (https://www.gnu.org/licenses/gpl-3.0.html)

3.5.1. quakemigrate.plot.event

Module containing methods to generate event summaries and videos.

copyright: 2020–2023, QuakeMigrate developers.
license: GNU General Public License, Version 3 (https://www.gnu.org/licenses/gpl-3.0.html)

quakemigrate.plot.event.event_summary(run, event, marginalised_coa_map, lut, xy_files=None)[source]

Plots an event summary illustrating the locate results: slices through the marginalised coalescence map with the best location estimate (peak of interpolated spline fitted to 3-D coalescence map) and uncertainty ellipse from gaussian fit to gaussian-smoothed 3-D coalescence map. Plus a waveform gather of the pre-processed waveform data used to calculate the onset functions (sorted by distance from the event), and a plot of the maximum value of the 4-D coalescence function through time.

Parameters

run (Run object) – Light class encapsulating i/o path information for a given run.
event (Event object) – Light class encapsulating waveforms, coalescence information, picks and location information for a given event.
marginalised_coa_map (numpy.ndarray of numpy.double) – Marginalised 3-D coalescence map, shape(nx, ny, nz).
lut (LUT object) – Contains the traveltime lookup tables for seismic phases, computed for some pre-defined velocity model.
xy_files (str, optional) –
Path to comma-separated value file (.csv) containing a series of coordinate files to plot. Columns: [“File”, “Color”, “Linewidth”, “Linestyle”], where “File” is the absolute path to the file containing the coordinates to be plotted. E.g: “/home/user/volcano_outlines.csv,black,0.5,-“. Each .csv coordinate file should contain coordinates only, with columns: [“Longitude”, “Latitude”]. E.g.: “-17.5,64.8”. Lines pre-pended with # will be treated as a comment - this can be used to include references. See the Volcanotectonic_Iceland example XY_files for a template.

Note

Do not include a header line in either file.

3.5.2. quakemigrate.plot.phase_picks

Module to produce a summary plot for the phase picking.

copyright: 2020–2023, QuakeMigrate developers.
license: GNU General Public License, Version 3 (https://www.gnu.org/licenses/gpl-3.0.html)

quakemigrate.plot.phase_picks.pick_summary(event, station, waveforms, picks, onsets, ttimes, windows)[source]

Plot a figure showing the pre-processed traces for each data component and the onset functions calculated from them for each phase. The search window to make a phase pick is displayed, along with the dynamic pick threshold, the phase pick time and its uncertainty (if made) and the Gaussian fit to the onset function.

Parameters

event (Event object) – Light class encapsulating waveforms, coalescence information, picks and location information for a given event.
station (str) – Station code.
waveforms (obspy.Stream object) – Filtered seismic data used to calculate the onset functions.
picks (pandas.DataFrame object) – Phase pick times with columns [“Name”, “Phase”, “ModelledTime”, “PickTime”, “PickError”, “SNR”] Each row contains the phase pick from one station/phase.
onsets (dict of {str: numpy.ndarray}) – Keys are phases. Onset functions for each seismic phase.
ttimes (list of float) – Modelled traveltimes from the event hypocentre to the station for each phase to be plotted.
windows (dict of list, [int, int, int]) – Keys are phase. Indices specifying the window within which the pick was made [start, modelled_arrival, end].

Returns

fig – Figure showing phase picking information.

Return type

matplotlib.Figure object

3.5.3. quakemigrate.plot.trigger

Module to plot the triggered events on a decimated grid.

license: GNU General Public License, Version 3 (https://www.gnu.org/licenses/gpl-3.0.html)

quakemigrate.plot.trigger.trigger_summary(events, starttime, endtime, run, marginal_window, min_event_interval, detection_threshold, normalise_coalescence, lut, data, region, discarded_events, interactive, xy_files=None, plot_all_stns=True)[source]

Plots the data from a .scanmseed file with annotations illustrating the trigger results: event triggers and marginal windows on the coalescence traces, and map and cross section view of the gridded triggered earthquake locations.

Parameters

events (pandas.DataFrame) – Triggered events information, columns: [“EventID”, “CoaTime”, “TRIG_COA”, “COA_X”, “COA_Y”, “COA_Z”, “MinTime”, “MaxTime”, “COA”, “COA_NORM”].
starttime (obspy.UTCDateTime) – Start time of trigger run.
endtime (obspy.UTCDateTime) – End time of trigger run.
run (Run object) – Light class encapsulating i/o path information for a given run.
marginal_window (float) – Time window over which to marginalise the 4D coalescence function.
min_event_interval (float) – Minimum time interval between triggered events.
detection_threshold (array-like) – Coalescence value above which to trigger events.
normalise_coalescence (bool) – If True, use coalescence normalised by the average coalescence value in the 3-D grid at each timestep.
lut (LUT object) – Contains the traveltime lookup tables for the selected seismic phases, computed for some pre-defined velocity model.
data (pandas.DataFrame) – Data output by detect() – continuous scan, columns: [“COA”, “COA_N”, “X”, “Y”, “Z”]
region (list) – Geographical region within which to trigger earthquakes; events located outside this region will be discarded.
discarded_events (pandas.DataFrame) – Discarded triggered events information, columns: [“EventID”, “CoaTime”, “TRIG_COA”, “COA_X”, “COA_Y”, “COA_Z”, “MinTime”, “MaxTime”, “COA”, “COA_NORM”].
interactive (bool) – Toggles whether to produce an interactive plot.
xy_files (str, optional) –
Path to comma-separated value file (.csv) containing a series of coordinate files to plot. Columns: [“File”, “Color”, “Linewidth”, “Linestyle”], where “File” is the absolute path to the file containing the coordinates to be plotted. E.g: “/home/user/volcano_outlines.csv,black,0.5,-“. Each .csv coordinate file should contain coordinates only, with columns: [“Longitude”, “Latitude”]. E.g.: “-17.5,64.8”. Lines pre-pended with # will be treated as a comment - this can be used to include references. See the Volcanotectonic_Iceland example XY_files for a template.

Note

Do not include a header line in either file.
plot_all_stns (bool, optional) – If true, plot all stations used for detect. Otherwise, only plot stations which for which some data was available during the trigger time window. NOTE: if no station availability data is found, all stations in the LUT will be plotted. (Default, True)