TILT SEISMIC DATA SET 2 THROUGH JUNE 12 PPO radial 40.00 25 00 10.00 5.00 06 07
ID: 114115 • Letter: T
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TILT SEISMIC DATA SET 2 THROUGH JUNE 12 PPO radial 40.00 25 00 10.00 5.00 06 07 08 09 10 JUNE 6-JUNE 12 PPO tiltmeter, north side of volcano. Two perpendicular tilt axes (radial tilt and tangential tilt). Tiltmeters are sensitive to even slight changes in temperature, so burial 1 to 2 m deep is necessary in order to isolate the instrument from diurnal temperature changes UB0 radial 2000 150 0 1000 09 10 June 8-June 12 UBO tiltmeter east side of Mount Pinatubo. No signs of ground cracking or faulting were observed in the rift area or the summit region during helicopter inspections between June 7 and 12. Map from Lockhart et al, 1996 Figures from Ewert et al, 1996Explanation / Answer
Q.2:-On june 8 :-It is on the peak 40000 microradian then it started decreasing on half of the day and suddenly incteses again from 5000 microradian .
After 8 june ,since 9 june it is decreasing and on 12th june it is almost negligible.so the trend is decreasing for now.
Q.3:-As it is in decreasing trend now so we may say may be it is going to be inactive or to be erruptive again soon.so red should be the alert level.
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