Position: 61.358°N 149.994°W – Depth: 39 km
This earthquake is one of the many aftershock from the November 30 7.0 quake.
SeisComP3 traces for AM.R8C73.00.SHZ (Exton PA) and LD.GEDE.BHZ (Greenville DE showing the P wave arrivals.
Distance: 48.6 Deg – 5401.8 Km
Azimuth: 80.1 Deg
Position: 61.340°N 149.937°W – Depth: 10.9 km
From the USGS information page
The November 30, 2018, Mw 7.0 earthquake near Anchorage, Alaska, occurred as the result of normal faulting at a depth of about 40 km. Focal mechanism solutions for the event indicate slip occurred on a moderately dipping fault striking north-south (dipping either to the east at about 30 degrees, or the west at about 60 degrees). At the location of this earthquake, the Pacific plate is moving towards the northwest with respect to the North America plate at about 57 mm/yr, subducting beneath Alaska at the Alaska-Aleutians Trench, approximately 150 km south-southeast of this event. The location and mechanism of this earthquake indicate rupture occurred on an intraslab fault within the subducting Pacific slab, rather than on the shallower thrust-faulting interface between these two plates.
Earthquakes are common in this region. Over the past century, 14 other M 6+ earthquakes have occurred within 150 km of the November 30, 2018 event. Two of these – a M 6.6 earthquake in July 1983 and a M 6.4 event in September 1983 – were at a similarly shallow depth and caused damage in the region of Valdez. The M 9.2 great Alaska earthquake of March 1964, was an interface thrust faulting earthquake that ruptured over several hundred kilometers between Anchorage and the Alaska-Aleutians trench, and to the southwest.
Heliocoder trace of AM.RC8C73.00.SHZ in Exton PA
Distance: 48.6 Deg. 5,399 km
Azimuth: 80.2 Deg.
SeisComP3 traces for AM.R8C73.00.SHZ (Exton PA), PE.PSUB.HHZ (Media PA), and LD.GEDE.BHZ (Greenville DE).
Even without filtering, the earthquake shows up very well at our noisy location.
The same as above, but with a 0.7 – 2.0 Hz bandpass filter applied.
A long period trace with a 1 Hz lowpass filter.
Jamaseis heliocorder traces of AM.R8C73.00.SHZ and PE.PSUB.HHZ.
SeisComP3 display showing the fault plane solution for this event.
Position: 13.159°N 81.161°W – Depth: 10.0 km
Jamaseis heliocoder trace of PE.PSUB.HHZ in Media Pa.
SeisComP3 traces for AM.R8C73.00.SHZ (Exton PA), PE.PSUB.HHZ (Media PA) and LD.FMMC.HHZ (Franklin & Marshall College) showing the P wave arrivals.
Distance: 27.3 Deg. 3,526 km
Azimuth:9.3 Deg.
SeisComP3 fault plane solution showing that this event was along a NNW/SSE or WSW/ENE strike-slip fault.
Position: 55.582°N 162.045°E – Depth: 58.7km
Heliocoder trace of AM.RC8C73.00.SHZ. The P arrival is annotated
Distance: 72.8 Deg. 8,096 km
Azimuth: 42.7 Deg.
SeisComP3 traces for AM.R8C73.00.SHZ (Exton PA), LD.WUPA.BHZ (West Chester University, West Chester PA), and PE.PSUB.HHZ (Media PA) showing the P wave arrivals.
Position: 19.626°N 65.084°W – Depth: 85 km
A modest earthquake, but one that was detected here in southeastern Pennsylvania. This earthquake occurred in the Puerto Rico Trench north of the Virgin Islands at a depth of 85km.
SeisComP3 traces for AM.R8C73.00.SHZ (Exton PA), LD.WUPA.BHZ (West Chester University, West Chester PA), PE.PSUB.HHZ, and LD.FMMC.HHZ showing the P wave arrivals. In this case the RaspberryShake (R8C73) actually had the cleanest trace!
Distance: 22.3 Deg – 2,475 km
Azimuth: 338.3 Deg
Position: 15.561°N 49.864°W – Depth: 10.0km
Jamaseis heliocoder trace of AM.RC8C73.00.SHZ and LD.WUPA.BHZ. Arrows point to the P wave arrivals.
Distance: 33.2 Deg. 3,685 km
Azimuth: 322.4 Deg.
SeisComP3 traces for AM.R8C73.00.SHZ (Exton PA), LD.WUPA.BHZ (West Chester University, West Chester PA) , and PE.PSUB.HHZ (Media PA) showing the P wave arrivals.
SeisComP3 scolv Display showing the fault plane solution for this event. Movement was along a NW/SE or SW/NE trending strike-slip fault.
Another heliocorder view of AM.RC8C73.00.SHZ.