HR: 0800h
AN: S41B-0569    [Abstracts]
TI: Mining Data, What a Blast!
AU: * Mulder, T L
EM: tmulder@ucsd.edu
AF: UCSD, IGPP 0225, La Jolla, CA 92093 0225, United States
AB: Seismic network data processing involves a number of critical decisions which are a balance of available funding and manpower vs the amount and extent of data being processed. In an ideal world, any event detected by a given network would have associated arrivals and usually an associated origin. In this world of decreasing telecommunications costs, that has resulted in an ever increasing number of sensors and stations along with accessibility to ever expanding real-time data flow, this complete human data review is no longer a feasible reality with the existing personnel support. Decisions on catalogue inclusiveness are being made based on expediency and budget constraints rather than on a scientific or technical basis. One of the critical time sinks for an analyst is the location and discrimination of the large number of daily man-made blasts, whether they be from road construction, quarries, or mines. Given that mines exist in a given location it is possible to first, automatically assign event locations to blast sites in real-time, and second, to provide quick mine site associations on the post-real-time processing level. This reduces the analyst's job from a complete event location to simply verifying and correcting automatic detections. A study has been carried out using a grid of mine locations and running an event associator with automatic detections over this grid. Mine blasts are automatically located at the grid mine sites. This has been particularly successful with large blasts outside the network which were previously creating poor locations and necessitated analyst involvement to ensure that these events were not a seismic event within or near the boundaries of the network.
DE: 7200 SEISMOLOGY
DE: 7215 Earthquake source observations (1240)
DE: 7219 Seismic monitoring and test-ban treaty verification
DE: 7294 Seismic instruments and networks (0935, 3025)
SC: Seismology [S]
MN: 2007 Fall Meeting