In this "white paper" we have tried to present to the reader a new design pattern we have developed for dynamic visualization of the geophysical data and maps via Internet. Starting from the list of visualization tasks we have faced in the past 6-7 years we show that although they look different, in fact they are from the same family, namely a triangle of geophysical database (time varying component), GIS (static background), and web browser with embedded Java applet (mediator). In the design section we show how the mediator talks to the GIS and database servers on the network, how do the JavaScript and Java talk to each other within the web browser, and how we "chain" modules in the applet to recycle code from different projects.
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