Magnitude 5.4 quake near Rosarito, Baja California Norte, Mexico

Last updated: 2018-03-26 17:50:55 UTC

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The Anza group at the University of California San Diego operates a broadband seismograph network consisting of 17 three component broadband seismograph stations centered near Anza, California (see map).

On Tuesday, June 15th, 2004 at 3:28 PM (PDT) we recorded a quake (preliminary ml 5.4) located near Rosarito.

If you felt the quake, the USGS would like to know. Please add to the USGS "Did you feel it?" page.

View the most recent map of local events near San Diego or a slightly wider regional view of events recoded by ANZA, or a map of events recoded by ANZA from around the globe.

Initial source parameters for the recent event are shown below. The epicentral distance (distance separating the epicenter and the closest station in the recording network) for Anza is 71 km (0.64 degrees).

This map shows the mainshock (red star) and any associated aftershocks (orange stars). Anza network stations are yellow triangles.

Event Map

Global mecator event map

Event Parameters

Latitude	Longitude	Origin time (UTC)	Origin time (PDT)	Depth (km)	ml	Author
32.3844	-117.7734	6/15/04 (167) 22:28	6/15/04 (167) 15:28	22	5.4	UCSD:vladik

* The location and magnitude determined for this event are preliminary and are subject to change upon further review of seismic data.

You may also view a plot showing

Note that the vertical components for all Anza stations (excluding station SOL) record a small foreshock (the first red P flag) that occurred approximately 5 seconds before the main event. We are currently investigating this phenomenon.

Download data:

Tarred CSS 3.0 miniSEED data for the event

Of local interest:

We operate a broadband station on Mt. Soledad. At 15:29 (PDT) station SOL recorded the P wave from this event. Here is a view of that event as picked by our analyst. A red P indicates a P wave arrival, a red S indicates an S wave arrival.

3 component seismometer recordings at Soledad

View a larger image showing the waveforms recorded at Mt. Soledad.

Visit the IRIS website with additional links to seismic data for this event.

Virtual 3-D Model

If you try to double click the scene file to open it iView3D gives the following alert: “ The current scene has invalid bounding coordinates. ” The scene will load if you open iView3d and then open the file from the File menu.

You may download an interactive 3-D model by right-clicking (Windows) or CTRL-clicking (Mac) the image below and choosing "Download file to disk". The file has been compressed to ~10MB with gzip and must be expanded before use. To view the virtual model, you need to download iView 3D - a free viewer available from IVS for Windows, Mac, Linux, Sun and SGI platforms. Click here to download the viewer.

The model consists of an outline of the state of California (white lines), major faults (brown lines) and major highways (blue lines). The region of Southern California has high resolution topography and offshore bathymetry. The model and its component parts have been accurately georeferenced. The hypocenter is plotted as a red diamond. Historical seismicity (from the PDE catalog) is plotted as small yellow cubes (they clearly define the fault zones). Once the file has loaded into iView3D, navigation is accomplished by using the mouse. Click the left mouse button and drag left or right to rotate about the vertical axis. Click the left mouse button and drag up or down to rotate about the horizontal axis. Translations and scaling are both accomplished with either the middle or right mouse buttons in a two-step process.

Learn more about how to visualize seismic data.

Search the Internet

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Learn more about the Anza group (including who works here, other networks, nuclear tests in China/India/Pakistan).
Learn more about the ANZA network (includes more station information, research, etc).

URL: http://eqinfo.ucsd.edu/special_events/2004/167/a/index.php [Last updated: 2018-03-26 17:50:55 UTC]