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6768
From: Redhart, [DNS_Address]
Subject: Sciencing the shit out of yesterday's 6.4 quake...
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Great article with exceptional maps and graphics explaining yesterday's 6.4 california quake (which actually happened on two faults). I highly recommend it. |
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[6771] [6777] [6778] [6772] [6775] [6770] [6773] [6769] [6774] [6776]
6771
From: ryan, [DNS_Address]
Subject: Re: Sciencing the shit out of yesterday's 6.4 quake...
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thanks...here's their report on the 7.1... Rupture of a Previously Unknown Fault The town of Ridgecrest was not done shaking after a magnitude 6.4 earthquake on the morning of July 4. An M=7.1 shock ruptured for at least 35 km (20 mi) from the 4 July 2019 epicenter, towards the northwest, and perhaps also for 25 km to the southeast. It is astonishing that there is no continuous mapped fault at the ground surface, despite the near absence of vegetation that can otherwise hide faults. Numerous other faults have been mapped in this region, trending predominantly in a north-south direction, somewhat different than this earthquake. The aftershock alignment, however, is very straight in a northwest-southeast trend, suggesting that beneath the surface must lie a continuous fault. We strongly suspect that the rupture is right-lateral (whichever side you are on, the other moves to the right). The trend is parallel to the San Andreas Fault, but has a strike (or compass orientation) more westerly than most of the nearby surrounding faults. Magnitude 7.1 earthquake rips northwest from the M6.4 just 34 hours later Posted on July 6, 2019 by Tiegan Hobbs Ross S. Stein, Ph.D., Tiegan Hobbs, Ph.D., Chris Rollins, Ph.D., Geoffrey Ely, Ph.D., Volkan Sevilgen, M.Sc., and Shinji Toda, Ph.D. The M 6.4 earthquake loaded the site where the M 7.1 shock nucleated. Now, the M 7.1 has extended the original rupture to the northwest, as well as to the southeast, where it kisses the major Garlock Fault. Citation: Ross S. Stein, Tiegan Hobbs, Chris Rollins, Geoffrey Ely, Volkan Sevilgen, and Shinji Toda, (2019), Magnitude 7.1 earthquake rips northwest from the M6.4 just 34 hours later, Temblor, http://doi.org/10.32858/temblor.037 Check your risk Rupture of a Previously Unknown Fault The town of Ridgecrest was not done shaking after a magnitude 6.4 earthquake on the morning of July 4. An M=7.1 shock ruptured for at least 35 km (20 mi) from the 4 July 2019 epicenter, towards the northwest, and perhaps also for 25 km to the southeast. It is astonishing that there is no continuous mapped fault at the ground surface, despite the near absence of vegetation that can otherwise hide faults. Numerous other faults have been mapped in this region, trending predominantly in a north-south direction, somewhat different than this earthquake. The aftershock alignment, however, is very straight in a northwest-southeast trend, suggesting that beneath the surface must lie a continuous fault. We strongly suspect that the rupture is right-lateral (whichever side you are on, the other moves to the right). The trend is parallel to the San Andreas Fault, but has a strike (or compass orientation) more westerly than most of the nearby surrounding faults. Map of the past 40 hours of earthquakes from the USGS (ANSS) catalog, with the inferred sense of fault slip represented by the gray half-arrow pairs. This gives the impression of a northwestward rupture of perhaps 30 km length, which is very short for such a large shock. Because the USGS website is experiencing problems, this might be an incomplete portrayal. Did the Rupture Unzip to the Northwest Only, or Also to the Southeast? Without knowing about this fault, there was no reason to suspect that such a large earthquake could occur to the north of the July 4 rupture. Fortunately, this is a remote location, with even fewer people living to the northwest of the mainshock than the south. While much of the seismicity in the last 48 hours has fallen along two nearly linear faults, aftershocks of this magnitude 7.1 earthquake have formed a cluster to the northwest of the main rupture fault. This cluster, near Little Lake, CA, is approximately 15 km (9 miles) south of the Coso Geothermal Area. That geothermal region is home to abundant seismicity [Hauksson & Unruh, 2007] which is often clustered in swarms at its periphery. All events in this swarm, as of midnight local time on July 5th, are shallower than 10 km depth, consistent with previous swarms in this area. |
6777
From: kay.so.or, [DNS_Address]
Subject: Re: Sciencing the shit out of yesterday's 6.4 quake...
URL: https://www.youtube.com/watch?v=tl7hkASlD5g&feature=em-uploademail
| I do follow dutchsinse and he really is right on the money a lot of times ryan and connects the dots..this video is quite detailed, and he thinks another, bigger is coming, like a 7.5 and from the dream I had a few years ago and saw this...I felt it was bigger also, so have been watching it. |
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[6778]
6778
From: ryan, [DNS_Address]
Subject: Re: Sciencing the shit out of yesterday's 6.4 quake...
| not sure what my post had to do with the dutchman... |
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None
6772
From: Redhart, [DNS_Address]
Subject: Re: Sciencing the shit out of yesterday's 6.4 quake...
| Thanks, ryan! |
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[6775]
6775
From: Eve, [DNS_Address]
Subject: Re: Sciencing the shit out of yesterday's 6.4 quake...
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thanks! |
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6770
From: Teresa kN Cal, [DNS_Address]
Subject: Thanks Redhart(NT)
| (NT) |
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[6773]
6773
From: Redhart, [DNS_Address]
Subject: Re: Thanks Redhart(NT)
| Good to see you there, Theresa :) |
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6769
From: Eve, [DNS_Address]
Subject: Re: Sciencing the shit out of yesterday's 6.4 quake...
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So it was the Garlock and the Owens fault? I am having issues assimilating today but I think that is what I am reading but it just says in the visuals. |
6774
From: Eve, [DNS_Address]
Subject: Re: Sciencing the shit out of yesterday's 6.4 quake...
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thank you! |
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[6776]
6776
From: Eve, [DNS_Address]
Subject: Re: Sciencing the shit out of yesterday's 6.4 quake...00os!
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