Tuesday, December 20, 2016

Animated marine traffic in the San Francisco Bay

Scroll through the explanation in the sidebar on the left
or view the full-screen demo to explore the map.

From Mapbox by Sam Kronick

Though it may be easy to overlook from life on land, the waters of San Francisco Bay are alive with activity at all hours of the day.
To visualize how boats navigate the Bay, this is an animated map that takes you on a guided tour through 24 hours of marine telemetry data captured by the US Coast Guard.
Seeing the data in motion lets you discover interesting patterns that you might miss in a static map, such as this group of fishing boats leaving Half Moon Bay around the same time in the morning:

or the number of smaller boats that zip by a big ship as it turns around 180 degrees in the Oakland turning basin:

or the general traffic patterns in the central bay :

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