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Report Contents
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Summary
The summary presents some of the highlights of the report. Strongest and deepest events; number of events and stations.
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Daily Event Count
The daily event count presents the number of events per day at 12AM corrected for local time.
The range selector allows zooming in or out and acts as a filter for the seismicity map below.
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Seismicity Map
The seismicity map is an interactive google map of the events considered for each report, filtered with
the range selector of the daily event count. Below and to the right are East-West and North-South depth profiles.
These profiles are aligned with the map coordinates and will adjust appropriately as the user pans or zooms the map.
Note that the depth profiles are not filtered by the daily event count range selector.
The seismic events are marked as filled circles with transparency dependent on the quality of the location. This
approach gives focus to well located events, disregarding lower quality solutions. A similar approach is followed
in the depth profiles with lighter blue for lower quality events.
The colors of the icons in the map reflect
their age with respect to the date of the report. Yellow for events older than 20 days, orange for
events between 10 and 20 days and red for events younger than 10 days.
The size of each marker represents its magnitude in a fixed scale from the highest magnitude (10 pixels) to the
lowest magnitude (1 pixel). The same scale is used for the depth profiles. The default magnitude chosen for the
marker size is ML. However, if ML is not available, MD will be used instead.
Clicking on each icon will access an info window for that event.
The seismicity map also presents the stations as blue circles filled in white. Tooltips show the name of the station
and clicking on each station will access an info window with basic information on it.
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Magnitude Statistics
The two plots show the dependency of the event count on the magnitude. Separate plots for ML and MD are considered.
Clicking and dragging on each plot allows zooming in whereas double clicking returns to the initial plot.
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Events per Station
The chart shows the event count for each station during the period considered for the report. This allows detecting
failed stations or stations with unusual number of events. To further assist the identification of problems in the
stations or corresponding event detection system, the chart shows also the local average event count for each station.
This is computed by taking the event counts of all the stations within a configurable radius of the considered station
and computing the average. This allows determining if a station is more or less effective than the surrounding stations
to report seismic events.
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Events Table
The final element of the report is a table with all the considered events and corresponding information. Clicking on
the event ID will highlight the corresponding event on the seismicity map.
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