PF+Earthquake+June+4,+2006

Main LIGO Page AGN PF's LIGO Data LIGO June 2006

The quake reported as occurring on 6/4/06 at 08:56:32.73, at 50.9530 -130.1340 was detected in the LIGO data.

Here's the LIGO plot: Its distance from LIGO was about **931.66 km** (x). I found this by using the measurement tool in Google Earth. First I entered the coordinates from the LIGO data into Google Earth and put a place-marker on that spot. Next I used the ruler tool to measure the distance between that point and the LIGO station in Hanford Washington (46°27'18.76"N, 119°24'27.51"W).

The duration between its inception and its detection at LIGO was **2.58 minutes**. I found this by taking the distance from the earthquake to LIGO (931.66) and dividing it by the speed of the s- and p-waves of the quake. I then divided that answer by 60 to get the answer in minutes.

931.66 km / 6 km/s = 155.2766667 s / 60 = 2.58 min

This duration of time fits perfectly with the graph from the LIGO data. In the data it was reported as occurring at 08:56:32.73. Simple addition of the 2.58 minutes to that time shows that it should have been detected in Hanford at about 08:59:08, which is what the above graph shows.

The speed it had to travel to cover that distance in that time was **361.11** **km/min** or **6.02 km/s.** These are plausible wave speeds, based upon this [|website].

Date Time Lat Lon Depth Mag Magt Nst Gap Clo RMS SRC Event ID 2006/06/04 08:56:32.73 50.9530 -130.1340 10.00 5.20 Mw 147 0.96 NEI 200606044031