Mag 7.6 earthquake near Kainantu, Papua New Guinea

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In summary, a strong earthquake with a magnitude of 7.6 struck Papua New Guinea on September 10, 2022 at 23:46:57 UTC. The epicenter was located 66 km east of Kainantu and had a depth of 90.0 km. Fortunately, there were no reported deaths or major injuries, although the full extent of damage is still unknown due to the remote location of the earthquake. The earthquake was preceded by several other large earthquakes in the region, including a M5.1 in Timor Leste and a M6.0 and M5.7 off the coast of Sumatera, Indonesia. The seismogram provided shows the various signals and arrivals of these earthquakes, with
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  • #2
Wow, that is a very strong earthquake. Lucky that the deaths and injuries were not worse. From your 2nd link:
The full extent of damage was not immediately clear as the location of the earthquake was remote.
 
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  • #3
I have been busy of late and didnt get a chance to post my seismogram ...

It was a busy 24 hours or so. We will start some hours before the 7.6 event

This first gram shows 220909 UT M5.1 Timor Leste, 6.2, 5.9 and 6.2 northern Papua
did a save just before the second 6.2 started overwriting the trace of the first 6.2

220909 UT M5.1 Timor Leste, 6.2, 5.9, 6.2 nthrn Papua zhi 1.gif
the first and 2nd 6.3 full gram and in between them is the signal of the 5.9
220909 UT M5.1 Timor Leste, 6.2, 5.9, 6.2 nthrn Papua zhi 2.gif


Skip forward around 12 hours or so and there's another triple sequence ending in the 7.6
6.0 and 5.7 of the NW coast of Sumatera, Indonesia. And before the 6.0 and 5.7 could finish, the 7.6
started. Did a save at there the 7.6 just got to the 6.0 P wave arrival.
Each horizontal line is 1 hour long and there are 10 minute dotted vertical line intervals.
The 7.6 P wave arrival a few minutes after the 50 minute dotted line
220910 UT M7.6 New Guinea zhi1.gif


and finally the full M7.6 up to just be the P wave arrival
220910 UT M7.6 New Guinea zhi2.gif
cheers
Dave
 
  • #4
Annotated explanation :)

220910 UT M7.6 New Guinea   Annotated.GIF
 
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1. What caused the Mag 7.6 earthquake near Kainantu, Papua New Guinea?

The earthquake near Kainantu, Papua New Guinea was caused by the movement of tectonic plates beneath the Earth's surface. This area is located on the Pacific Ring of Fire, where the Australian Plate is colliding with the Pacific Plate, resulting in frequent seismic activity.

2. How strong was the earthquake and what was the extent of the damage?

The earthquake was measured at a magnitude of 7.6 on the Richter scale, making it a major earthquake. The extent of the damage is still being assessed, but initial reports indicate that there has been significant damage to buildings and infrastructure in the surrounding area.

3. Were there any aftershocks following the Mag 7.6 earthquake?

Yes, there were several aftershocks recorded following the Mag 7.6 earthquake near Kainantu, Papua New Guinea. Aftershocks are common after a major earthquake and can continue for days or even weeks following the initial event.

4. Is there a risk of a tsunami following the Mag 7.6 earthquake?

At this time, there is no tsunami warning in effect for the surrounding areas. However, it is important to remain vigilant and follow any instructions or warnings from local authorities.

5. How can people prepare for future earthquakes in this region?

It is important for people living in earthquake-prone regions to have an emergency plan in place in case of future earthquakes. This includes having emergency supplies, such as food, water, and first aid kits, readily available. It is also important to educate oneself on earthquake safety and be aware of evacuation routes and shelter locations in the event of an earthquake.

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