Comparison of India's and Pakinstan's nuclear tests and the 30 May, 1998 Afghanistan earthquake
- October 8th, 2006 magnitude 4.2 mb event from an alleged nuclear test in North Korea
- 1998 India underground nuclear tests
- 1998 Pakistan underground nuclear tests
- Comparison of tests & Afghan earthquake
- Afghanistan earthquake-aftershock-2nd Pakistani nuclear test sequence
- China earthquakes and nuclear tests
The four figures below show the first Indian nuclear test of 11 May 1998, the first Pakistani test of 28 May 1998, the predicted arrival time for the second Pakistani test of 30 May 1998 and the Ms 6.9 Afghanistan earthquake of 30 May 1998. All are plotted with the same amplitude and time scale. The amplitude of the waveforms in the final figure showing the Afghanistan earthquake plot off scale because the scale was normalized to the Indian nuclear test.
India's 11 May 1998 nuclear test
India test magnitude based on REB location using 7 stations is mb = 5.49
Pakistan's 28 May 1998 nuclear test
Pakistan test magnitude based on QED location using 3 stations is mb = 5.29
Indian test magnitude based on REB location using same 3 stations which recorded the Pakistan test of 5/28/1998 is mb = 5.54
The second Pakistan test was obscured by aftershocks from the Ms 6.9 earthquake which occured about 30 minutes before the second test.
Examination of the waveform data, based on the QED location, shows no observable body waves at the predicted arrival times. Using the first Pakistani explosion for calibration, the amplitude of the second Pakistani explosion is at least a factor of four smaller (0.6 magnitude units) for it not to be observed in the aftershock data. Please click on the images below for an enlarged version.
|KNET recording of India nuclear test||KNET recording of first Pakistan nuclear test|
|KNET recording of second Pakistan nuclear test||KNET recording of Afghanistan earthquake|
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URL: http://eqinfo.ucsd.edu/special_events/nuclear_tests/comparison.php [Last updated: 2010-11-23 (327) 23:01:44 UTC]