2019 Ridgecrest Earthquakes Data

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2019 Ridgecrest Earthquakes Data

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Last edited Sep 27, 2020

Created on Sep 27, 2020

This visualization maps the 2019 Ridgecrest earthquake sequence using a geographic scatter plot, where each earthquake is positioned by latitude and longitude and visually encoded by time and magnitude. The example uses D3.js with a `d3.geoPath` projection to render the California region and `d3.forceSimulation` to avoid label or point overlap. It loads data from a CSV file compiled from USGS earthquake records, with points colored along a temporal gradient from the initial M6.4 event to subsequent aftershocks. The code computes magnitude-based point sizing and uses D3 scales to map depth and time to visual channels.

AI-generated description

This data is about the 2019 Ridgecrest earthquakes.

CSV from https://en.wikipedia.org/wiki/File:2019_Ridgecrest_earthquakes.svg

Upstream data source: https://earthquake.usgs.gov/earthquakes/map/?extent=35.30056,-118.49442&extent=36.24538,-116.29715&range=search&sort=oldest&listOnlyShown=true&timeZone=utc&search=%7B%22name%22:%22Search%20Results%22,%22params%22:%7B%22starttime%22:%222019-07-04%2000:00:00%22,%22endtime%22:%222019-07-31%2023:59:59%22,%22maxlatitude%22:36.421,%22minlatitude%22:34.678,%22maxlongitude%22:-116.093,%22minlongitude%22:-118.949,%22minmagnitude%22:2.5,%22orderby%22:%22time-asc%22%7D%7D

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