NetDC manual [ back ] [ forward ]

As the scope of seismic data increases and the Internet becomes a more pervasive environment for information interchange, the expansion of request processing to a distributed network becomes the next logical step toward making seismic data easily and widely available. NetDC represents just such a distributed system and will reduce the need for data centers to "mirror" each other in order to increase data accessibility. Each of the data centers in the NetDC interchange will be able to provide their clients with data that is even more up-to-date and of greater coverage than they were able to provide before. This results in less maintenance demands of any one data center since their responsibility has now been narrowed to a smaller, unique set of seismic networks.

A request format has been developed for user access to networked data that is both easy to use and flexible. The method of processing the request is fairly straightforward and melds well with current request processing methods. The intention of the NetDC system is for it to sit as a layer on top of the local data center's processing system while it also carries out the duties of delegating requests to many sites and gathering that data to forward to the user. By using email as the primary means of interchange, technical complexity of the system is reduced while robustness of data exchange is retained.

It is hoped that participation in the NetDC program will foster a new level of cooperation and involvement between data centers located around the globe. Users and data centers alike will benefit from the interconnectedness that NetDC provides.

introduction •• overall concept •• request format •• request reception and delegation
datagrams •• local request processing •• inventory requests •• response requests
waveform requests •• product shipment •• installation and setup •• writing interface code
troubleshooting •• future implementations •• conclusion •• appendix A - summary of NetDC datagrams

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