HR: 1330h
AN: U23A-01    [Abstracts]
TI: Virtual Global Magnetic Observatory VGMO.NET: A Component of the Electronic Geophysical Year Initiative
AU: * Papitashvili, V
EM: papita@umich.edu
AF: SPRL/AOSS, University of Michigan, 2455 Hayward St., Ann Arbor, MI 48109-2143 United States
AU: Petrov, V
EM: vpetrov@umich.edu
AF: SPRL/AOSS, University of Michigan, 2455 Hayward St., Ann Arbor, MI 48109-2143 United States
AU: Clauer, R
EM: bob.clauer@umich.edu
AF: SPRL/AOSS, University of Michigan, 2455 Hayward St., Ann Arbor, MI 48109-2143 United States
AU: Saxena, A
EM: anshuman.saxena@dk-tcs.com
AF: TCS Euro-Labs, Niels Jernes Vej 10, Aalborg, 9220 Denmark
AU: Papitashvili, N
EM: natasha@mail630.gsfc.nasa.gov
AF: SPDF/QSS Group Inc., NASA/GSFC, Greenbelt, MD 20771 United States
AB: During the past decade, many digital geomagnetic datasets have become available only via the World Wide Web. They are not necessarily submitted to the World Data Centers (WDC) as was required for standard magnetic observatories since the International Geophysical Year (1957-1958). As a result, the available worldwide geomagnetic databases have become diverse and distributed, creating an urgent need for more sophisticated search engines capable of identifying these databases on the Web and then retrieving data for scientific analyses. Here we report on a working prototype of the Virtual Global Magnetic Observatory (VGMO.NET), which introduces a new approach for the acquisition of geoscience data distributed worldwide. The VGMO.NET moves information exchange from a simple file transfer to a higher level of abstraction in forming the worldwide "data fabric" of distributed resources through the establishment of self-populating and self-sustaining data nodes. This is an "on-demand" objects-building Internet middleware application that is absolutely transparent to the remote users/clients in its internal data management activity. The VGMO.NET portal/server (i.e., one of the worldwide data fabric nodes) builds transferable data objects only from client requests: first by accessing the internal, server-side database and then, if data are not found locally, going through a pre-set list of Web-based geomagnetic data nodes (including WDC) and retrieving appropriate data for the requested interval. Upon retrieval, the data are converted into a uniform (e.g., flat-file) format and added to the node's database; therefore, future user requests of the same data interval from this node would not force a new search of the Web. Furthermore, the new user's self-populated database can be made available to others through the VGMO.NET as a new remote node (or even a new portal). Thus, every VGMO.NET user can include his/her database into the worldwide geomagnetic data fabric of a platform-independent and location-neutral environment. The proposed concept can be applied to any geoscience discipline within the eGY initiative, making discipline's time series, images, or maps a global asset.
UR: http://mist.engin.umich.edu/vgmo.html
DE: 1594 Instruments and techniques
DE: 2494 Instruments and techniques
DE: 2794 Instruments and techniques
DE: 6605 Education
DE: 9820 Techniques applicable in three or more fields
SC: Union [U]
MN: 2005 Joint Assembly