Sadly, another common villain has managed to make an unwelcome appearance already: some nefarious social media accounts are predicting that a larger quake in the region is imminent.Earlier on, I mentioned that the USGS estimated that there’s a roughly 3 percent chance of an earthquake of a magnitude 7.0 taking place in the area within the next seven days. Without a doubt, Anchorage will continue to shake for some time to come until the fault stops slipping at some undetermined point in the future.As always happens after a major quake strikes near a populated area, some amount of bullshit will be spread around the Web about what it means, and what the future holds. This is a vast and complex network, and as all the tectonic plates involved are continuously shifting around and causing each other trouble, earthquakes and volcanism will continuously take place along it. On January 23, 2018, at 00:31 AKST, an earthquake occurred in the Gulf of Alaska near Kodiak Island.The earthquake, measured at 7.9 on the M w scale, was approximately 280 kilometres (170 mi) southeast of Kodiak and happened at a depth of 25 kilometres (16 mi).. Among the most heavily damaged roads were the Palmer-Wasilla Highway, Pittman Road, Point MacKenzie Road and Vine Road. The earthquake's epicenter was near Point Mackenzie, about 10 miles (16 km) north of Anchorage, and occurred at a depth of 29 miles (47 km).It was followed six minutes later by a magnitude 5.7 aftershock centered 2.5 miles (4.0 km) north-northwest of the municipality. 7.0 earthquake struck at 8:29 local time; 5.7 aftershock struck 6 minutes later at 8:35 You aren’t going to initiate any catastrophes on those more famous faults or tectonic plate boundaries.The Ring of Fire refers to the horseshoe-shaped network of major tectonic boundaries around the Pacific Ocean. Update 17:34 UTC: This KTUU.com picture shows the kind of damage which was inflicted.
Alaska earthquakes fast facts. Several in various locations throughout the world, from Iran to Mexico, are suspected of being so powerful that the quake actually severed their respective tectonic plates in two. Instead, the fault slipped somewhere within the Pacific Plate further down the line, making this a within-slab or “intraslab” earthquake.It’s worth noting that intraslab earthquakes are happening constantly at low or modest magnitudes, but they often involve thrust faulting at shallow depths. Plenty of other factors come into play: the geographic location of the quake, the shaking intensity of the event, the depth of the quake, the architectural designs of the affected buildings, the local population’s education and awareness of seismological dangers, the region’s sediment layers, the availability of resources for the recovery and rescue efforts, and the ability of the quake to trigger secondary geological dangers – like landslides or tsunamis – all matter.In this case, the earthquake was pretty deep, which somewhat reduced its ability to violently shake the buildings. One major quake in Alaska will have zero effect on a fault across the ocean or even one elsewhere on the same continent.
He tends to write about the most extravagant of scientific tales, from eruptions and hurricanes to climate change and diamond-rich meteorites from destroyed alien worlds - but he's always partial to a bit of pop culture science. It’ll also explain what may happen next, why, while debunking any rumours that may emerge from the Internet's dark ooze as the hours go by.A tsunami warning for the Cook Inlet and Southern Kenai Peninsula was initially issued, and local authorities were reportedly telling people to prepare to seek higher ground. However, the warning was Preliminary analyses suggest the most intense shaking took place just north of Anchorage, registering as an VIII (out of X) on the modified Mercalli scale, which describes surface shaking. There have been 67 at a magnitude 3.0 or above so far, and more are expected. He tends to write about the most extravagant of scientific tales, from eruptionsRobin George Andrews is a doctor of experimental volcanology-turned-science journalist. This depth may also explain why the shaking was fairly widespread throughout the region, although that's little more than an educated guess at this point. Let’s quickly go through some definitions before I explain why.The magnitude 7.0 event was probably the mainshock, the most powerful quake in a sequence. The shaking began with a sharp jolt and lasted for a … Lucy Jones, seismologist extraordinaire at Caltech, In this case, the quake could trigger other, smaller quakes in faults within a 160-kilometre (100-mile) radius. At present, there have been no reports of any deaths.This highlights the fact that magnitude, although important, isn’t the only thing that matters when it comes to an earthquake’s destructive potential. This is good news: putting it another way, the agency says "there is a low likelihood of casualties." The news reports have shown the shaking and told how long it lasted. Be part of the solution: trust in scientist, share wisely, and keep your wits about you.Robin George Andrews is a doctor of experimental volcanology-turned-science journalist. On November 30, 2018, at 8:29 a.m. AKST (17:29 UTC), a magnitude 7.1 earthquake hit South Central Alaska. Suffering the worst damage was Vine Road, a section of which buckled and became impassable. I’ve already written a detailed post In crude terms, magnitude just denotes how much energy the earthquake has released from its source, and that's it.
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