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Magna earthquake 2020

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Journal Article
Published: 20 January 2021
Seismological Research Letters (2021) 92 (2A): 755–772.
...Steven G. Wesnousky Abstract Seismological characteristics of the 18 March 2020 M w 5.7 Magna, 31 March 2020 M w 6.5 Stanley, and 15 May 2020 M w 6.5 Monte Cristo Intermountain West earthquakes are largely consistent with expectations arising from observations accumulated over the ∼ 40 yr since...
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Journal Article
Published: 20 January 2021
Seismological Research Letters (2021) 92 (2A): 773–786.
...Ivan Wong; Qimin Wu; James C. Pechmann Abstract The 2020 oblique normal‐faulting M 5.7 Magna mainshock has provided the best dataset of recorded strong ground motions for an earthquake within the Wasatch Front region, Utah, and the larger Basin and Range Province. We performed a preliminary...
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Journal Article
Published: 13 January 2021
Seismological Research Letters (2021) 92 (2A): 741–754.
...Fred F. Pollitz; Charles W. Wicks; Jerry L. Svarc Abstract The 2020 Magna, Utah, earthquake produced observable crustal deformation over an ∼ 100 km 2 area around the southeast margin of Great Salt Lake, but it did not produce any surface rupture. To obtain a detailed picture of the fault slip, we...
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Journal Article
Published: 13 January 2021
Seismological Research Letters (2021) 92 (2A): 787–801.
...Ben Baker; Monique M. Holt; Kristine L. Pankow; Keith D. Koper; Jamie Farrell Abstract Immediately following the 18 March 2020 M ww 5.7 Magna, Utah, earthquake, work began on installing a network of three‐component, 5 Hz geophones throughout the Salt Lake Valley. After six days, 180 geophones had...
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Journal Article
Published: 30 December 2020
Seismological Research Letters (2021) 92 (2A): 710–724.
...Emily J. Kleber; Adam P. McKean; Adam I. Hiscock; Michael D. Hylland; Christian L. Hardwick; Greg N. McDonald; Zachary W. Anderson; Steve D. Bowman; Grant C. Willis; Ben A. Erickson Abstract The 18 March 2020 M w 5.7 Magna, Utah, earthquake was the largest earthquake in Utah since the 1992 M L 5.8...
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Journal Article
Published: 02 December 2020
Seismological Research Letters (2021) 92 (2A): 640–646.
...Maria Mesimeri; Hao Zhang; Kristine L. Pankow Abstract We present the application of a backprojection method for imaging the detailed rupture of the 2020 M w 5.5 Magna, Utah, earthquake. This is the first time that this method is applied to an earthquake smaller than M w 6 in a local scale using...
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Journal Article
Published: 04 November 2020
Seismological Research Letters (2021) 92 (1): 6–16.
... of the regional seismic hazard and risk. Almost 39,000 people reported feeling this earthquake ( USGS, 2020 ) and initial estimates project over $150 million U.S. in damage from this earthquake. Damage was largely focused near the epicenter in Magna and in downtown Salt Lake City. Trailer parks and historical...
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Journal Article
Published: 20 January 2021
Seismological Research Letters (2021) 92 (2A): 725–740.
... magnitude ( M w ) for small earthquakes. M w is generally preferred over other magnitude types, but, it is difficult to estimate M w for earthquakes with local magnitude ( M L ) < 3 – 3.5 , using conventional moment tensor (MT) inversion. The 2020 M ww 5.7 Magna, Utah, seismic sequence provides...
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Journal Article
Published: 20 January 2021
Seismological Research Letters (2021) 92 (2A): 840–848.
...Brendan W. Crowell Abstract In early 2020, four moderate sized earthquakes occurred in the Intermountain region of the western United States, two M 6.5 events in Challis, Idaho, and Monte Cristo Range, Nevada; an M 5.7 in Magna, Utah, within the Salt Lake City metropolitan area; and an M 5.8...
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Image
Epicentral map of the <b>2020</b> <b>Magna</b> sequence from 18 March to 24 June <b>2020</b> and...
Published: 20 January 2021
Figure 2. Epicentral map of the 2020 Magna sequence from 18 March to 24 June 2020 and other notable historical earthquakes near Magna. Source: modified from University of Utah (2020) .
Journal Article
Published: 27 January 2021
Seismological Research Letters (2021) 92 (2A): 823–839.
...Rich D. Koehler; Seth Dee; Austin Elliott; Alexandra Hatem; Alexandra Pickering; Ian Pierce; Gordon Seitz Abstract The M 6.5 Monte Cristo Range earthquake that occurred in the central Walker Lane on 15 May 2020 was the largest earthquake in Nevada in 66 yr and resulted in a multidisciplinary...
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Journal Article
Published: 01 March 2021
Seismological Research Letters (2021) 92 (2A): 636–639.
... mainshocks were the 18 March 2020 M w  5.7 earthquake north of Magna, Utah (a suburb of Salt Lake City), the 31 March 2020 M w  6.5 earthquake northwest of Stanley, Idaho, the 15 May 2020 M w  6.5 earthquake in the Monte Cristo Range, northwest of Tonopah, Nevada, and the 24 June 2020...
Image
Epicenters of mainshock and aftershocks of 18 March <b>2020</b>     M  w     5.7 M...
Published: 20 January 2021
Figure 4. Epicenters of mainshock and aftershocks of 18 March 2020 M w  5.7 Magna earthquake on physiographic map showing location of major surrounding active faults, the geodetic velocity field (blue arrows) and epicenters of earthquakes registered in year preceding the mainshock. Names
Journal Article
Published: 04 November 2020
Seismological Research Letters (2021) 92 (1): 460–468.
... earthquake. It was said in 1969 after a pair of M < 6 earthquakes near Santa Rosa, California, caused $7,125,000 in damage (about $50 million in today’s dollars) ( Steinbrugge et al. , 1970 ). While this article was being written, the 18 March 2020 M  5.7 Magna, Utah, earthquake caused...
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Journal Article
Published: 01 September 2020
Bulletin of the Seismological Society of America (2020) 110 (6): 2661–2692.
... limit of 250 km is roughly the same as the western limit of Fossa Magna ( Naumann, 1886 ), the major geological boundary between northeastern and southwestern Japan (Fig.  2 ). For the intraplate earthquakes in the PHS, δ th is not necessary because three intermediate‐depth intraplate...
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Journal Article
Published: 17 November 2020
Bulletin of the Seismological Society of America (2021) 111 (1): 157–172.
...Jorge Macedo; Norman Abrahamson; Chenying Liu ABSTRACT The Pacific Earthquake Engineering Research Center Next Generation Attenuation‐West2 database is used to derive a new conditional ground‐motion model (CGMM) and a set of scenario‐based models for estimating cumulative absolute velocity (CAV...
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Journal Article
Published: 17 March 2021
Seismological Research Letters (2021)
.... Whidden K. Sumsion R. Holt J. Mesimeri M. Wells D. , and Koper K. D. 2020 . Responding to the 2020 Magna, Utah, earthquake sequence during the COVID‐19 pandemic shutdown , Seismol. Res. Lett. 92 , 6 – 16 , doi: 10.1785/0220200265 . Pasolini C. Gasperini P...
FIGURES
Journal Article
Published: 10 March 2021
Seismological Research Letters (2021)
... , 166 – 171 . Pang G. Koper K. D. Mesimeri M. Pankow K. L. Baker B. Farrell J. Holt J. Hale J. M. Roberson P. , and Burlacu R. , et al. 2020 . Seismic analysis of the 2020 Magna, Utah, earthquake sequence: Evidence for a listric Wasatch fault , Geophys...
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Journal Article
Published: 22 November 2019
Journal of the Geological Society (2020) 177 (2): 283–296.
... along-strike over centimetre- to metre-length scales. Earthquake rupture mechanics critically depend on the physical properties of fault rock assemblages. Therefore, models that investigate rupture propagation at active plate boundaries should incorporate, or else assess tolerance and sensitivity...
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Image
Revised and newly inferred basin faults reinterpreted using reprocessed leg...
Published: 30 December 2020
with new inferred basin faults in thicker black lines. The Saltair graben is interpreted to be an older Basin and Range extensional structure (Miocene) that likely intersects with the Wasatch fault zone at depth. Although the Saltair graben was not likely the source of the 2020 Magna earthquake, it may