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Volcano earthquake report for Wednesday, 7 October 2026
• Moderate mag. 4.1 earthquake - Ecuador on Wednesday, Oct 7, 2026, at 04:06 ...
• M 1.3 - 49 km E of Pedro Bay, Alaska
• M 1.7 - 7 km WSW of Bull Shoals, Arkansas
• M 3.5 - 13 km ENE of Nyora, Australia
• M 1.7 - 10 km S of Idyllwild, CA
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#647335
Thu 17 Feb 2022 07:12:PM
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Joined: Feb 2001
Posts: 678,977
Launch Director
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Launch Director
Joined: Feb 2001
Posts: 678,977 |
Geologists know well how rock towers and arches shimmy, twist and sway in response to far-off earthquakes, wind and even ocean waves. Their latest research compiles a first-of-its-kind dataset to show that the dynamic properties, i.e. the frequencies at which the rocks vibrate and the ways they deform during that vibration, can be largely predicted using the same mathematics that describe how beams in built structures resonate. Source: Measuring the tempo of Utah's red rock towers
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