Earthquakes around the world

Aeneas said:
Last week saw 1 M8.2 in Alaska and 3 M6.
In the usual are, there were 20 out of 113 earthquakes worldwide equal to or greater than 4.5 and 2206 out of 2636 quakes of all sizes.
Percentage: 83.7%
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Last week saw just 1 M6 and that being a M6.1 in the Nicobar Islands.
In the usual area, there were 0 out of 109 earthquakes worldwide equal to or greater than 4.5 and 1902 out of 2386 quakes of all sizes.
Percentage: 79.7%
Earthquakes 7 days to August 8th 2021.gif
 
World Earthquake Report past 24h: 4 quakes 5.0+, 25 quakes 4.0+, 97 quakes 3.0+, 250 quakes 2.0+

World Earthquake Report for Sunday, 8 August 2021

Eqs M5.0+ reported by USGS

M5.4. 223 km SE of Attu Station, Alaska
2021-08-08 09:50:27 (UTC-05:00) 28.9 km

M5.1. 85 km NE of Calama, Chile
2021-08-07 13:31:04 (UTC-05:00) 137.8 km

M5.0. Galapagos Triple Junction region
2021-08-07 19:49:32 (UTC-05:00) 10.0 km

M4.9. (downgraded) 114 km SSE of Hihifo, Tonga
2021-08-07 18:16:21 (UTC-05:00) 35.0 km

M4.9. (downgraded) 74 km NW of Port-Vila, Vanuatu
2021-08-07 14:53:52 (UTC-05:00) 34.0 km
 
Ocean said:
Yellowstone Volcano Earthquake Swarm Update June 29
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Puma1974 said:
A swarm of more than 141 earthquakes is rattling Yellowstone National Park, geologists said.
[...]
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Ocean said:
Yellowstone - Sawmill Geyser Wakes Up After 5 Years on June 24th, July 21 Eruption [...]
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Ocean said:
Yellowstone Is Not Normal, It's Screaming, Harmonic Tremors Aug. 3 2021
[....]
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The Daily Mail reports that the USGS recorded over 1000+ tremors at Yellowstone over the month of July, the most since a swarm of 1,100 in June of 2017: 1,000+ earthquakes rattle Yellowstone in July - the most in a single month since 2017

The researchers seem to want to downplay the activity by saying that it is due to groundwater movement rather than magma, but i'm not sure that ultimately means its less ominous.

Some points of interest from the article:

- 1,008 earthquakes in the park, with a whopping 764 beneath Yellowstone Lake.
- largest was an M3.6 located 11 miles below the lake's surface
- no changes in deformation style or thermal/gas emissions detected [although deformations were recorded during the 2017 swarm]
- July seismicity in Yellowstone was marked by seven earthquake swarms, which began on July 16. Along with those in the Yellowstone Lake, the University of Utah also found the other earthquakes hit in groups of 12, 14, 20, 24 and 20 [this last number may be a typo since it's a repeat, so perhaps it's 30?]
 
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World Earthquake Report past 24h: 6 quakes 5.0+, 31 quakes 4.0+, 110 quakes 3.0+, 259 quakes 2.0+
World Earthquake Report for Monday, 9 August 2021

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Eqs M5.0+ reported by USGS

M5.5. Macquarie Island region
2021-08-08 17:19:10 (UTC-05:00)10.0 km

M5.3. southern Mid-Atlantic Ridge
2021-08-09 07:54:35 (UTC-05:00)10.0 km

M5.0. southern Mid-Atlantic Ridge
2021-08-09 08:18:36 (UTC-05:00)10.0 km

M5.0. 212 km WNW of Attu Station, Alaska
2021-08-09 04:42:01 (UTC-05:00)31.8 km

M5.0. southern Mid-Atlantic Ridge
2021-08-08 20:54:02 (UTC-05:00)10.0 km

M5.0. southern Mid-Atlantic Ridge
2021-08-08 18:03:37 (UTC-05:00)10.0 km
 
World Earthquake Report past 24h: 4 quakes 5.0+, 31 quakes 4.0+, 115 quakes 3.0+, 260 quakes 2.0+
World Earthquake Report for Tuesday, 10 August 2021

Eqs M5.0+ reported by USGS

M5.1. 129 km SSE of Kuril’sk, Russia
2021-08-10 07:08:40 (UTC-05:00) 5.4 km

M5.0. southern Mid-Atlantic Ridge
2021-08-09 16:50:33 (UTC-05:00) 10.0 km

M5.0. 72 km SW of Santiago, Peru
2021-08-09 16:03:24 (UTC-05:00) 18.5 km

M4.8 (downgraded) 23 km SE of Shwebo, Myanmar 2021-08-09 22:18:14 (UTC-05:00) 22.9 km

The absence of even moderate earthquakes above M5.5 is worrying. Hopefully seismic pressure in the coming days will be released more evenly with smaller earthquakes but there is a probablility of one strong earthquake.
 
World Earthquake Report past 24h: 5 quakes 5.0+, 39 quakes 4.0+, 107 quakes 3.0+, 247 quakes 2.0+

Eqs M5.0+

#1: 5.5 quake North Pacific Ocean, 187 km northeast of Saipan, Northern Mariana Islands, 12 Aug 2021 1:02 am (GMT +10)
#2: 5.1 quake North Pacific Ocean, Russia, 11 Aug 2021 3:27 am (GMT +11) - 1 day 0 hours ago
#3: 5.1 quake South Pacific Ocean, New Caledonia, 11 Aug 2021 8:21 am (GMT +11) - 20 hours ago
#4: 5.0 quake South Pacific Ocean, New Zealand, 10 Aug 2021 1:52 pm (GMT -12) - 15 hours ago
#5: 4.9 quake North Atlantic Ocean 10 Aug 2021 3:58 pm (GMT -3) - 22 hours ago (downgraded)

World Earthquake Report for Wednesday, 11 August 2021
 
World Earthquake Report past 24h: 1 quake 7.0+, 5 quakes 5.0+, 46 quakes 4.0+, 127 quakes 3.0+, 251 quakes 2.0+

M5.7 132 km SE of Lukatan, Philippines
2021-08-12 10:53:28 (UTC-05:00)10.0 km

M5.5. 296 km E of Levuka, Fiji
2021-08-11 22:47:00 (UTC-05:00)517.0 km

M5.2. Philippine Islands region
2021-08-11 21:26:11 (UTC-05:00) 35.0 km

M5.0 121 km SW of Bam, Iran
2021-08-12 07:24:06 (UTC-05:00) 10.0 km

M5.0 Kermadec Islands region
2021-08-11 21:11:52 (UTC-05:00)10.0 km
 
mabar said:
M 7.2 - 66 km SE of Bobon, Philippines
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And another large one, this time an M7.5 in the South Sandwich Islands region: Earthquake, Magnitude 7.5 - SOUTH SANDWICH ISLANDS REGION - 2021 August 12, 18:32:54 UTC
MagnitudeMw 7.5
RegionSOUTH SANDWICH ISLANDS REGION
Date time2021-08-12 18:32:54.7 UTC
Location57.62 S ; 25.39 W
Depth60 km
Distances2862 km ENE of Punta Arenas, Chile / pop: 117,000 / local time: 15:32:54.7 2021-08-12
2166 km E of Stanley, Falkland Islands / pop: 2,200 / local time: 15:32:54.7 2021-08-12
Global view
Source parameters reviewed by a seismologist


More information at:

1628798333842.pngUSGS/NEIC Denver, USA
1628798333871.pngGeoForschungsZentrum (GFZ) Potsdam, Germany
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Eq M7.5 Aftershocks ¡¡¡

M7.5 South Sandwich Islands region
2021-08-12 13:32:54 (UTC-05:00) 63.3 km

M6.2. South Sandwich Islands region
2021-08-12 14:44:55 (UTC-05:00) 61.9 km

M6.0. South Sandwich Islands region
2021-08-12 14:43:49 (UTC-05:00) 67.7 km

M5.9 South Sandwich Islands region
2021-08-12 14:07:52 (UTC-05:00) 18.9 km

M5.9 South Sandwich Islands region
2021-08-12 13:49:54 (UTC-05:00) 47.3 km

5.7 South Sandwich Islands region
2021-08-12 14:29:14 (UTC-05:00) 48.0 km
 
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