HR: 09:30h
AN: SF31B-07    [Abstracts]
TI: The International Solid Earth Research Virtual Observatory
AU: * Fox, G
EM: mpierce@cs.indiana.edugcf@indiana.edu
AF: Indiana University, 501 N. Morton Street, Bloomington, IN 47404 United States
AU: Pierce, M
EM: mpierce@cs.indiana.edu
AF: Indiana University, 501 N. Morton Street, Bloomington, IN 47404 United States
AU: Rundle, J
EM: rundle@physics.ucdavis.edu
AF: University of California, Davis, One Shields Avenue, Davis, CA 95616-8677 United States
AU: Donnellan, A
EM: Donnellan@jpl.nasa.gov
AF: NASA Jet Propulsion Laboratory, 4800 Oak Grove Drive, Pasadena, CA 91109-8099 United States
AU: Parker, J
EM: jay.w.parker@jpl.nasa.gov
AF: NASA Jet Propulsion Laboratory, 4800 Oak Grove Drive, Pasadena, CA 91109-8099 United States
AU: Granat, R
EM: Robert.Granat@jpl.nasa.gov
AF: NASA Jet Propulsion Laboratory, 4800 Oak Grove Drive, Pasadena, CA 91109-8099 United States
AU: Lyzenga, G
EM: Gregory.Lyzenga@jpl.nasa.gov
AF: NASA Jet Propulsion Laboratory, 4800 Oak Grove Drive, Pasadena, CA 91109-8099 United States
AU: McLeod, D
EM: mcleod@pollux.usc.edu
AF: University of Southern California, Trousdale Parkway, Los Angeles, CA 90089-0742 United States
AU: Grant, L
EM: lgrant@uci.edu
AF: University of California, Irvine, Environmental Analysis and Design, Irvine, CA 92697-7070 United States
AB: We describe the architecture and initial implementation of the International Solid Earth Research Virtual Observatory (iSERVO). This has been prototyped within the USA as SERVOGrid and expansion is planned to Australia, China, Japan and other countries. We base our design on a globally scalable distributed "cyber-infrastructure" or Grid built around a Web Services-based approach consistent with the extended Web Service Interoperability approach. The Solid Earth Science Working Group of NASA has identified several challenges for Earth Science research. In order to investigate these, we need to couple numerical simulation codes and data mining tools to observational data sets. This observational data are now available on-line in internet-accessible forms, and the quantity of this data is expected to grow explosively over the next decade. We architect iSERVO as a loosely federated Grid of Grids with each country involved supporting a national Solid Earth Research Grid. The national Grid Operations, possibly with dedicated control centers, are linked together to support iSERVO where an International Grid control center may eventually be necessary. We address the difficult multi-administrative domain security and ownership issues by exposing capabilities as services for which the risk of abuse is minimized. We support large scale simulations within a single domain using service-hosted tools (mesh generation, data repository and sensor access, GIS, visualization). Simulations typically involve sequential or parallel machines in a single domain supported by cross-continent services. We use Web Services implement Service Oriented Architecture (SOA) using WSDL for service description and SOAP for message formats. These are augmented by UDDI, WS-Security, WS-Notification/Eventing and WS-ReliableMessaging in the WS-I+ approach. Support for the latter two capabilities will be available over the next 6 months from the NaradaBrokering messaging system. We augment these specifications with the powerful portlet architecture using WSRP and JSR168 supported by such portal containers as uPortal, WebSphere, and Apache JetSpeed2. The latter portal aggregates component user interfaces for each iSERVO service allowing flexible customization of the user interface. We exploit the portlets produced by the NSF NMI (Middleware initiative) OGCE activity. iSERVO also uses specifications from the Open Geographical Information Systems (GIS) Consortium (OGC) that defines a number of standards for modeling earth surface feature data and services for interacting with this data. The data models are expressed in the XML-based Geography Markup Language (GML), and the OGC service framework are being adapted to use the Web Service model. The SERVO prototype includes a GIS Grid that currently includes the core WMS and WFS (Map and Feature) services. We will follow the best practice in the Grid and Web Service field and will adapt our technology as appropriate. For example, we expect to support services built on WS-RF when is finalized and to make use of the database interfaces OGSA-DAI and its WS-I+ versions. Finally, we review advances in Web Service scripting (such as HPSearch) and workflow systems (such as GCF) and their applications to iSERVO.
DE: 8010 Fractures and faults
DE: 7200 SEISMOLOGY
DE: 1645 Solid Earth
SC: Special Focus: Advances in Data Acquisition, Management, Analysis and Display [SF]
MN: 2004 AGU Fall Meeting