Search results
Results From The WOW.Com Content Network
Until Sunday, the strongest earthquake in the past month to hit San Bernardino County's fourth most populous city occurred on Sept. 7, when a magnitude 3.9 earthquake caused "light" shaking to be ...
They said the combination of a single moderate earthquake in December 2022 and high water levels in the Wateree River during parts of 2022 and 2023 have contributed to the earthquakes.
The Modified Mercalli intensity scale (MM, MMI, or MCS) measures the effects of an earthquake at a given location. This is in contrast with the seismic magnitude usually reported for an earthquake. Magnitude scales measure the inherent force or strength of an earthquake – an event occurring at greater or lesser depth. (The "M w" scale is ...
The Richter scale [1] (/ ˈ r ɪ k t ər /), also called the Richter magnitude scale, Richter's magnitude scale, and the Gutenberg–Richter scale, [2] is a measure of the strength of earthquakes, developed by Charles Richter in collaboration with Beno Gutenberg, and presented in Richter's landmark 1935 paper, where he called it the "magnitude scale". [3]
Much of an earthquake's total energy as measured by M w is dissipated as friction (resulting in heating of the crust). [52] An earthquake's potential to cause strong ground shaking depends on the comparatively small fraction of energy radiated as seismic waves, and is better measured on the energy magnitude scale, M e. [53]
This meant that giant earthquakes such as the 1960 Chilean earthquake (M 9.5) were only assigned an M s 8.2. Caltech seismologist Hiroo Kanamori [ 47 ] recognized this deficiency and took the simple but important step of defining a magnitude based on estimates of radiated energy, M w , where the "w" stood for work (energy):
The earthquake caused landslides and damaged some homes, forcing at least 5 families to move to a community centre. [263] A magnitude 6.2 earthquake struck Peru 22 km (14 mi) southwest of Vilavila, Puno Region on December 1 at a depth of 12.0 km (7.5 mi). The shock had a maximum intensity of VI (Strong). [264]
A magnitude 6.7 earthquake struck Chile, near Valparaíso, on April 17, at a depth of 37 km. [51] One person died of a heart attack and another due to the loss of power at a local hospital. [citation needed] A magnitude 6.8 earthquake struck Papua New Guinea, about 137 km north of Lae, on April 17 at a depth of 208.2 km. [52]