Magnitude 3.75 quake near Ribbonwood, CA
Last updated: 2014-10-13 21:29:11 UTC
- Location map
- Initial source parameters
- 3 components [closest Anza station]
- Vertical components [all Anza stations]
- CSS 3.0 miniSEED data for Anza
- Waveforms recorded at Mt. Soledad
- Continuous Waveforms
The Anza group at the University of California San Diego operates a broadband seismograph network consisting of 14 (+ 2) three component broadband seismograph stations centered near Anza, California (see map).
On Thursday, October 24th, 2002 at 10:18 (PDT) we recorded a quake (preliminary ml 3.75) located near the city of Ribbonwood, California.
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 and aftershocks are shown below. The epicentral distance (distance separating the epicenter and the closest station in the recording network) for Anza is 0.030 (3.33585 km).
This map shows the mainshock (red star). Anza network stations are blue triangles.
|Latitude||Longitude||Origin time (UTC)||Origin time (PST)||Depth||ml||Author|
|33.5083||-116.5708||10/24/02 (297) 17:18:32.235||10:18 (PDT)||14.6114||3.75*||UCSD:vladik|
* The location and magnitude determined for this event are preliminary and are subject to change upon further review of seismic data.
The plot below shows the vertical movement recorded by each station in the Anza network. At the left hand side of the figure you see the top 10 stations recorded an earthquake, magnitude 1.8, that occurred approximately 5 minutes prior to the mainshock. The mainshock earthquake (largest amplitude waveforms) was recorded at all ANZA stations. After the mainshock earthquake you see many red brackets that indicate aftershocks of this event. This entire display shows ~25 minutes of continuous data.
You may also view a plot showing:
Download data:css3.0 miniSEED data for Anza
Of local interest
We operate a broadband station on Mt. Soledad. At 10:18 (PDT) station SOL recorded the P wave from this event. Here is a view of that event as picked by our analyst. The pink P indicates a P wave arrival, the S indicates an S wave arrival.
Visit the USGS website with additional links to seismic data for this event.
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/2002/297/a/index.php [Last updated: 2014-10-13 21:29:11 UTC]