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| 5/24 |
| 2008/7/29-8/3 [Science/Disaster] UID:50722 Activity:nil |
7/29 5.8 quake in LA
\_ Felt exactly like Whittier quake, so it's not surprising it's
roughly the same size. A whole lotta shaking, though.
\_ Chino Hills is NOT Los Angeles. Los Angeles is in-between
the 110 the 10 and the 5. Chino Hills is far away from
Los Angeles. Fucking ignorant northerners. To be precise,
you should say "The Greater LA"
http://earthquake.usgs.gov/eqcenter/recenteqsus/Quakes/ci14383980.php#details
http://preview.tinyurl.com/67pu5h [usgs]
\_ LA is not only between the 110, 10, and 5, angry dude. LA is
south of the 10, for instance. Chino Hills is rightly
considered a suburb of LA, even though it is in SB County.
Plenty of people in LA proper were shaken pretty good.
\_ The epicenter was Chino hills. Are you saying there wasn't any
shaking in LA proper?
\_ revised down to a 5.4 |
| 5/24 |
|
| earthquake.usgs.gov/eqcenter/recenteqsus/Quakes/ci14383980.php#details Small globe showing earthquake Small map showing earthquake Tectonic Summary The greater Los Angeles area earthquake of 29 July 2008, 11:42 PDT (18:42 UTC), was centered in the hills south of Diamond Bar and Chino Hills. An early analysis of the earthquake's focal mechanism implies that the shock originated as the result of oblique-reverse faulting, in which a block of crust is thrust up and over the crust on the opposite side of the fault and also moves sideways with respect to the crust on the opposite side of the fault. This style of faulting is intermediate between pure reverse faulting and pure strike-slip faulting. The epicenter is in a region of the greater Los Angeles area in which both significant reverse faulting (the Puente Hills thrust) and right-lateral strike-slip faulting (the Whittier fault) have been documented. The early focal-mechanism is thus consistent with the shock having occurred as the result of stresses similar to those which produced previously mapped faults in the earthquake region. At present, however, the shock has not been associated with a specific geologically mapped fault. The 29 July 2008 was situated about 30 km east-southeast of the Whittier Narrows earthquake of 1 October 1987, which had a magnitude of 6 and which produced over $358 million in damages. The Whittier Narrows earthquake occurred as the result of thrust-faulting (reverse-faulting on a shallowly dipping plane) on the Puente Hills thrust. |
| preview.tinyurl.com/67pu5h -> earthquake.usgs.gov/eqcenter/recenteqsus/Quakes/ci14383980.php Small globe showing earthquake Small map showing earthquake Tectonic Summary The greater Los Angeles area earthquake of 29 July 2008, 11:42 PDT (18:42 UTC), was centered in the hills south of Diamond Bar and Chino Hills. An early analysis of the earthquake's focal mechanism implies that the shock originated as the result of oblique-reverse faulting, in which a block of crust is thrust up and over the crust on the opposite side of the fault and also moves sideways with respect to the crust on the opposite side of the fault. This style of faulting is intermediate between pure reverse faulting and pure strike-slip faulting. The epicenter is in a region of the greater Los Angeles area in which both significant reverse faulting (the Puente Hills thrust) and right-lateral strike-slip faulting (the Whittier fault) have been documented. The early focal-mechanism is thus consistent with the shock having occurred as the result of stresses similar to those which produced previously mapped faults in the earthquake region. At present, however, the shock has not been associated with a specific geologically mapped fault. The 29 July 2008 was situated about 30 km east-southeast of the Whittier Narrows earthquake of 1 October 1987, which had a magnitude of 6 and which produced over $358 million in damages. The Whittier Narrows earthquake occurred as the result of thrust-faulting (reverse-faulting on a shallowly dipping plane) on the Puente Hills thrust. |