HR: 1330h
AN: S52C-0146    [PDF]
TI: CISN Display Progress to Date - Reliable Delivery of Real-Time Earthquake Information, and ShakeMap to Critical End Users
AU: * Rico, H
EM: hugo@gps.caltech.edu
AF: Caltech, 1200 E California Blvd. Seismo Lab 252-21, Pasadena, CA 91125 United States
AU: Hauksson, E
EM: hauksson@gps.caltech.edu
AF: Caltech, 1200 E California Blvd. Seismo Lab 252-21, Pasadena, CA 91125 United States
AU: Thomas, E
EM: e.thomas@isti.com
AF: Instrumenal Software Technologies, Inc., 77 Van Dam Street, Saratoga Springs, NY 12866 United States
AU: Friberg, P
EM: p.friberg@isti.com
AF: Instrumenal Software Technologies, Inc., 77 Van Dam Street, Saratoga Springs, NY 12866 United States
AU: Frechette, K
EM: k.frechette@isti.com
AF: Instrumenal Software Technologies, Inc., 77 Van Dam Street, Saratoga Springs, NY 12866 United States
AU: Given, D
EM: doug@usgs.gov
AF: USGS, 525 S. Wilson Ave., Pasadena, CA 91106 United States
AB: The California Integrated Seismic Network (CISN) has collaborated to develop a next-generation earthquake notification system that is nearing its first operations-ready release. The CISN Display actively alerts users of seismic data, and vital earthquake hazards information following a significant event. It will primarily replace the Caltech/USGS Broadcast of Earthquakes (CUBE) and Rapid Earthquake Data Integration (REDI) Display as the principal means of delivering geographical seismic data to emergency operations centers, utility companies and media outlets. A subsequent goal is to provide automated access to the many Web products produced by regional seismic networks after an earthquake. Another aim is to create a highly configurable client, allowing user organizations to overlay infrastructure data critical to their roles as first-responders, or lifeline operators. And the final goal is to integrate these requirements, into a package offering several layers of reliability to ensure delivery of services. Central to the CISN Display's role as a gateway to Web-based earthquake products is its comprehensive XML-messaging schema. The message model uses many of the same attributes in the CUBE format, but extends the old standard by provisioning additional elements for products currently available, and others yet to be considered. The client consumes these XML-messages, sorts them through a resident Quake Data Merge filter, and posts updates that also include hyperlinks associated to specific event IDs on the display map. Earthquake products available for delivery to the CISN Display are ShakeMap, focal mechanisms, waveform data, felt reports, aftershock forecasts and earthquake commentaries. By design the XML-message schema can evolve as products and information needs change, without breaking existing applications that rely on it. The latest version of the CISN Display can also automatically download ShakeMaps and display shaking intensity within the GIS system. This can give Emergency Response managers' information needed to allocate limited personnel and resources after a major event. The shaking intensity shape files may be downloaded out-of-band to the client computer, and with the GIS mapping tool, users can plot organizational assets on the CISN Display map and analyze their inventory against potentially damaged areas. Lastly, in support of a robust design is a well-established and reliable set of communication protocols. To achieve a state-full server connection and messaging via a signaling channel the application uses a Common Object Request Broker Architecture (CORBA). The client responds to keep-alive signals from the server, and alerts users of changes in the connection status. This full-featured messaging service will allow the system to trigger a reconnect strategy whenever the client detects a loss of connectivity. This sets the CISN Display apart from its predecessors, which do not provide a failover mechanism, or a state of connection. Thus by building on past programming successes and advances in proven Internet technologies, the CISN Display will augment the emergency responder's ability to make informed decisions following a potentially damaging earthquake.
UR: http://www.cisn.org
DE: 7200 SEISMOLOGY
DE: 7223 Seismic hazard assessment and prediction
DE: 7230 Seismicity and seismotectonics
SC: Seismology [S]
MN: 2003 Fall Meeting