workshop was organised on the
seismic array analyses programmes.
For F-k, the most sensitive parameters are associated with the reliability range of each
seismic array (Figure 2(a)) because they depend on distance (D), wavelength ([lambda]), and number of waves (K), where Kmin and kmax, given in a two-dimensional space Kx and Ky (Figures 2(b) and 2(c)), define the greatest and least contribution of energy to propagating waves.
With Sunday's large North Korean blast, NORSAR, short for the Norwegian
Seismic Array, a research group based in Kjeller, noted that global shock waves alone provide insufficient information to determine if the detonation was a true hydrogen bomb, as the North declared."But we can say in general," the group added,"that the credibility of the claim increases with increasing explosive yield." It said other evidence, such as leaks of radioactivity from the underground test site, might solve the riddle of the bomb type in the weeks to come.
A beamforming method (62, 65, 66) with a dense
seismic array can feasibly be used to locate the sources of microseisms (67, 68) and seismic hum.
Seismic Hazard Analysis and Zonation for the northern Areas of Pakistan and Kashmir, (Pakistan Meteorological Department-Norwegian
Seismic Array).
4:45 THE EFFECTS OF MEASUREMENT UNCERTAINTY ON SPACTIOAN WAVE GRADIENTS AS ESTIMATED FROM A
SEISMIC ARRAY **.
Recently, Xi Engineering has attracted worldwide attention for its work on wind turbines in South West Scotland, to prevent them interfering with the MoD Eskdalemuir
Seismic Array which monitors illegal nuclear testing.
Figures 2.1, 2.2 and 2.3 show a preliminary analysis of the location of the induced micro-earthquakes based on approximately 750 micro-seismic events of the more than 4000 events detected by the extensive passive
seismic array installed across the Paralana site.
The ARC
seismic array at Karnal, specifically designed to pick up underground nuclear tests, too, came to the conclusion that the thermonuclear test was a " fizzle." The government was thus provided three sets of reports-- a 50- page report by the DRDO based on the on- site instrumentation that it had set up, a detailed report based on the seismic readings picked up by the ARC in its various facilities, and a report by the DAE based on some seismic instruments it had brought onsite at the last minute.
For example, FedEx provided free transport of CERI's portable
seismic array to western India.