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1968 Borrego Mountain Earthquake
The 1968 Borrego Mountain earthquake occurred on April 8, at 18:28 PST, near the unincorporated community of Ocotillo Wells in San Diego County. The moment magnitude () 6.6 strike-slip earthquake struck with a focal depth of . Damage was relatively moderate, and the mainshock was assigned a maximum Modified Mercalli intensity (MMI) of VII (''Very strong''). Shaking was felt in Nevada, and Arizona. It was the largest earthquake to strike California since 1952, and its display of afterslip became the subject of scientific interest. Tectonic setting A simplified tectonic bounday map of the Salton Trough area. Red lines show major faults and arrows indicate fault motion. The San Andreas Fault (SAF) is the main plate boundary that defines the margin between the Pacific and North American Plates in California. It is believed to have formed during the Oligocene. The fault has a length of , of which, it is visible for from the Salton Sea to Point Arena. Divided into four distinc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pacific Standard Time
The Pacific Time Zone (PT) is a time zone encompassing parts of western Canada, the western United States, and western Mexico. Places in this zone observe standard time by subtracting eight hours from Coordinated Universal Time (UTC−08:00). During Daylight saving time in the Americas#Canada, Mexico and the United States, daylight saving time, a time offset of UTC−07:00 is used. In the United States and Canada, this time zone is generically called the Pacific Time Zone. Specifically, time in this zone is referred to as Pacific Standard Time (PST) when standard time is being observed (early November to mid-March), and Pacific Daylight Time (PDT) when daylight saving time (mid-March to early November) is being observed. In Mexico, the corresponding time zone is known as the ''Zona Noroeste'' (Northwest Zone) and observes the same daylight saving schedule as the U.S. and Canada. The largest city in the Pacific Time Zone is Los Angeles, Greater Los Angeles, whose metropolitan ar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
