EARTHQUAKE & PHASE CATALOG SEARCHES



INPUT DATA SET

There is currently one searchable earthquake catalog (SCSN) available.



OUTPUT FORMATS:

There are currently eight output formats available from this catalog search. Click on the underlined links below to see the specifics about data formats.



EVENT ID #

The event identification number is a unique number assigned to every event in the SCEDC catalog. This number is soley used by the SCEDC catalog. In other words, the same event may have a different id number in another catalog. To query for more than one event, separate each event id with a comma. Example: event1, event2, event3



DATE SPECIFICATIONS

The date parameters are specified in the following format:

Time is in UTC time

The date must be fully specified. If not an appropriate error message
will be displayed in your browser



LATITUDE and LONGITUDE PARAMETERS

Latitude and Longitude values are specified in decimal degrees, e.g. 34.50 for 34 and one-half degrees. Latitude values can range from -90 to 90, and longitude values can range from -180 to 180. Remember that longitude for California is WEST, and therefore should be specified as NEGATIVE (eg -121.5 for 121.5 degrees West).

On the 4-point polygon search, to enter the latitude and longitude parameters from the map, click on the map at each corner of the desired polygon. The current latitude and longitude position of the mouse is echoed on the screen. To move an existing pick to a new coordinate, press the mouse button while over the point to be changed and drag it the new position. Clicking on the map always moves the nearest pick to the selected location. You may also enter the latitude and longitude values manually by typing in the text regions to the right of the map. After entering the desired values, click on "Apply" to update the map.



MINIMUM - MAXIMUM PARAMETERS

Search parameters that have min and max values are:



EVENT TYPE DESCRIPTION

Additional search parameters for selecting earthquakes include the following event type specifications.