QuakeExplorer  QuakeExplorer

Earthquake Browser and Analysis Tool

The QuakeExplorer browser lets you rapidly explore, visualize and analyze the latest earthquake events and associated seismic traces over the Internet. For visualisation, QuakeExplorer launches the Java applications SeismicityViewer and SeisGram2K.


QuakeExplorer - How it works...

Latest release version:  QuakeExplorer v4.0.0X04 (04Sep2008); change history; (Most recent beta release)

The QuakeExplorer software is under development. Check this page regularly for updates.

New!QuakeExplorer now supports viewing parametric information and displaying near-realtime streams from a SeedLink server. See the Help in QuakeExplorer and SeisGram2K SeedLink Monitor - QuickStart for more information

QuakeExplorer is supported in part by the EU-project MEREDIAN (contract no EVR1-CT-2000-40007), and by Anthony Lomax Scientific Software 

Try QuakeExplorer to browse the latest events from ORFEUS-POND or EDUSeis-Nice:

Instructions for Download and Running:

The QuakeExplorer browser is a stand-alone Java application. It will run on Windows, Linux, Solaris, MacOS and other systems. To run the QuakeExplorer browser, you must have the Java Platform for Java 2 (Java version 1.2.2) or higher available on your system.

  1. Make sure that the command java is available on your program search path. (Enter: java -version to see if Java is properly installed, available on the path, and to determine its version.)

    • If you do not have a recent version of Java available on your system (JRE (Java Runtime Environment - for end users), or Java SDK (Java Software Development Kit - for developers)), you can download Java from Sun for LINUX, Solaris, Macintosh and Windows.

  2. Download QuakeExplorer:

    • Download the java archive QuakeExplorer40.jar (3.0Mb) to a convenient installation directory (i.e. my_QuakeExplorer_installation_directory/).

  3. Depending on your Java installation and system environment, you may be able to run QuakeExolorer by simply opening the file QuakeExplorer40.jar, if not, go to step 3 below.

  4. Run QuakeExplorer:

    • From the command line, or within a script or batch file, enter:

      [JAVA_PATH]java -cp CLASS_DIR/QuakeExplorer40.jar net.alomax.quakeexplorer.QuakeExplorer [QE_DATABASE]


      JAVA_PATH is an optional path to the Java Platform bin directory; it is required if the Java Platform bin directory is not on your program search path,

      CLASS_DIR is the path to the installation directory where you placed the file QuakeExplorer.jar (i.e. my_QuakeExplorer_installation_directory)

      (On WIndows,  remember to use "\" instead of "/" as separator character.)

      By default, QuakeExplorer will load events from the ORFEUS-POND QuakeExplorer database over the Internet.  You must have an active Internet connection to access this database.  Use the Search menu database list in QuakeExplorer to open and browse other QuakeExplorer databases.

    • QE_DATABASE is an optional Uniform Resouce Locator (web address or local directory name) for the base directory of a QuakeExplorer database (i.e http://orfeus.knmi.nl/QuakeExplorer/base for the ORFEUS-POND QuakeExplorer database) or the inet adress of a SeedLink server in the form seedlink://host:port  (If DATABASE is not specified, QuakeExplorer will attempt to load the first QuakeExplorer database specified at http://www.alomax.net/QuakeExplorer/dbsitelist)

  5. For more information and options for running and using QuakeExplorer, consult the Help in QuakeExplorer.


If you use a proxy or firewall, or if you get the message:

java.net.ConnectException: Connection timed out: connect

see Running Java with a proxy or firewall.

You can override the default Earth model used by TauP to display theoretical travel times in SeisGram2K by creating or editing a sg2kdefaults (or .sg2kdefaults) file in your working or home directory to include a line of the form:

seisgram2k.taup.model  =  MODEL.taup

where MODEL is one of iasp91, ak135, jb or prem.  Similarly, you can override the default theoretical phases that are displayed by including a line of the form:

seisgram2k.taup.phases  =  p,s,P,S,Pn,Sn,PcP,Pdiff,PKP,pP,sP

See SeisGram2K->Help->Running,arguments and The TauP Toolkit for more information.

Questions? Comments? Suggestions? Please contact Anthony Lomax.


The QuakeExplorer software was conceived and developed by:
Anthony Lomax

Anthony Lomax Scientific Software

Anthony Lomax Scientific Software