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WEED - Windows Extracted from Event Data - is an X-windows program which presents the user with a GUI interface for selecting events and stations and then computes travel times from events to stations. The resulting files can be used to create data requests or for extracting data from existing SEED volumes. The following is a list of options available to WEED users.
NOTICE: WEED volumes created from FARM/SPYDER® holdings will be removed from the /pub/weed/userdata directory after 2 days. Users should download their data within 2 days of making a request or contact the DMS for special instructions.
WEED requires 3 input files to generate a summary file, to make a request, or to extract data from a SEED volume. Two of these files are generated outside of the WEED application - the station file and the event file. The WEED download comes with event files (by year) and several station files (broken down by network) but, to stay current, users are required to update those files as needed. Here are the file update options:
- download station files (updated daily)
- download event files (updated daily)
- download FARM event files (updated as needed)
- create a customized station file using a database query (e.g. select only those stations that have the channels you are interested in or are located in a particular region)
- create a customized event file using a database query (e.g. select only events that are within a specific magnitude range or that occur at a certain depth or within a specific region)
Because WEED is an application that is downloaded to a user's machine and not directly tied in to the DMC archive, it can be used independently on any database as long as the required files are in the appropriate format.
Questions? Please write to 