What caused the 2014 Solomon Islands earthquake and Alaska earthquake?

  • Thread starter davenn
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In summary, Dave shares the latest recorded event on his system, a Mw 6.0 earthquake in the Solomon Islands. He notes that while it was not the largest event in the last 24 hours, it was followed by a Mw 6.2 earthquake in Alaska. Dave also mentions that the earthquake he recorded was not very visible due to its depth and distance. He then responds to a question about the distance and body wave phases, stating that he is approximately 2815 km away and can easily identify P and S waves. He also shares a calculation for the P arrival time, which he notes is not far off from his initial observation.
  • #1
davenn
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hi guys and gals
latest reasonable event recorded on my system
2014-09-25 0913.50UT Mw 6.0, offshore, 160km SSW of Gizo, Solomon Islands

140925 0913UT M6.0 offshr SW Solomons zhi.gif
Not the largest event in the last 24 Hrs. it was followed by a Mw 6.2, 94km WNW of Willow, Alaska at 1751UT. but because of its depth and distance, it doesn't show up well ... see the small set of surface waves between ~ 1830 and 1859UT

cheers
Dave
 
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  • #2
Hi Dave, what distance are you from the quake? What body wave phases can you identify? Which component is this, vertical?
 
  • #3
Hi Billiards :)

2815 km +- ~ 10 km, P and S easily identifiable ( will label and re-upload the image) Yes this is vertical

140925 0913UT M6.0 offshr SW Solomons zhia.GIF


just a quick "back of envelope" calculation

P velocity ~ 7.5 km / sec for 2800 km = 6.22 minutes

Quake origin time 0913.50UT P arrival time ~ 0918UT ( I haven't done analysis yet so just going by the view on seismogram) P travel time 4 - 5 minutes

that's not too far out ;)cheers
Dave
 
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What is the 20140925 Solomons Quake?

The 20140925 Solomons Quake refers to a magnitude 7.1 earthquake that occurred on September 25, 2014 in the Solomon Islands, a country located in the South Pacific Ocean. It was one of the strongest earthquakes to ever hit the region.

Where did the 20140925 Solomons Quake occur?

The 20140925 Solomons Quake occurred in the Solomon Islands, specifically near the coast of the island of Makira, which is located in the eastern part of the country.

What caused the 20140925 Solomons Quake?

The 20140925 Solomons Quake was caused by the movement of tectonic plates beneath the surface of the Earth. The Solomon Islands are located near the boundary of the Pacific and Australian plates, making them prone to earthquakes and volcanic activity.

What were the effects of the 20140925 Solomons Quake?

The 20140925 Solomons Quake caused significant damage and destruction in the surrounding areas. It triggered landslides, damaged buildings, and disrupted communication and transportation systems. Fortunately, there were no reported fatalities.

Is the 20140925 Solomons Quake related to other recent earthquakes?

While it is not directly related to other recent earthquakes, the 20140925 Solomons Quake is part of a larger pattern of seismic activity in the Pacific Ring of Fire, a region known for its frequent earthquakes and volcanic eruptions. The earthquake was also followed by several aftershocks in the following days.

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