This site is a portal to the seismic waveform data archives at GEOFON, including the EIDA data holdings. With it, you can request
from different data centers spread across Europe.
If you encounter difficulties using the WebDC software, please contact the authors at email@example.com .
The portal allows you to create requests which combine the stations' locations with earthquake lists provided by GFZ or other agencies. See the "Event Controls" box. In this case the event time and coordinates are used to compute approximated arrival times ("onset times") for the P or S wave of the selected earthquakes at the selected stations.
The web interface is built up from boxes. Here are some of the features of each box.
Use this to select events to compose your request. This powerful tool is an event browser which can query several sources of information.
Catalog Services: At GFZ you can choose events from one of the following public catalog services:
Select "Catalog Services" under "Event Information". Then use the pull-down menu under "Catalog Service" to choose the desired catalog. Now you can filter events by:
User Supplied: Alternatively you can upload your own catalog...
Use this to add channels to your request. The selection of stations can be made according to
Symbols used on the pull-down lists are: * = temporary network; + = restricted access (see here)
You can limit the selection to particular types of streams/channels, either
Here the events and stations you choose will be displayed. Use the mouse to drag the map around. Use the left SHIFT + Mouse to drag areas for limiting the search of events and stations when the appropriate modules are enabled.
The tables here show the events and stations you choose. Use these tables to check which events and stations have been selected by your search criteria. You can interactively remove unwanted items. Your final request will be built from the currently displayed information. You can refine the selection of streams for stations using the "Advanced Stream Filters Control".
Triangles on the column headers allow you to sort rows by the values in those columns.
The "O/R" column shows whether the station is "open" (field is empty) or "restricted" (shown by a red "R").
Use this to send your request to a server. You can check the status of your requests using the controls under the "Download data" tab.
Here you can check the status of your Arclink requests made during your current use of this service. The usual request group operations (Reroute/Retry/Resend/Delete/Refresh) as well as download links are available on the status popup. Use this box to conveniently download a small number of recent data volumes.
Here you can manage all your Arclink requests (including requests made during previous visits). Downloading all your data volumes with a single click is possible if you have jDownloader installed.
Warnings and other messages appear here. Unwanted messages can be removed by reloading the page, or using the "Clear" button.