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Queen Charlotte earthquake 2012

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Journal Article

Seismic velocity structure of the Queen Charlotte terrace off western Canada in the region of the 2012 Haida Gwaii Mw 7.8 thrust earthquake

M. Riedel, S. Yelisetti, C. Papenberg, K.M.M. Rohr, M.M. Côté, G.D. Spence, R.D. Hyndman, T. James
Journal: Geosphere
Published: 23 December 2020
Geosphere (2021) 17 (1): 23–38.
DOI: https://doi.org/10.1130/GES02258.1
...M. Riedel; S. Yelisetti; C. Papenberg; K.M.M. Rohr; M.M. Côté; G.D. Spence; R.D. Hyndman; T. James Abstract A well-recorded Mw 7.8 megathrust earthquake occurred on 27 October 2012 under the Queen Charlotte terrace off the west coast of Haida Gwaii, western Canada. In this study, we supplement...
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Thermal Condition of the 27 October 2012 M w 7.8 Haida Gwaii Subduction Earthquake at the Obliquely Convergent Queen Charlotte Margin

Kelin Wang, Jiangheng He, Franziska Schulzeck, Roy D. Hyndman, Michael Riedel
Published: 07 April 2015
Bulletin of the Seismological Society of America (2015) 105 (2B): 1290–1300.
DOI: https://doi.org/10.1785/0120140183
...Kelin Wang; Jiangheng He; Franziska Schulzeck; Roy D. Hyndman; Michael Riedel Abstract The 2012 M w 7.8 Haida Gwaii earthquake confirmed very oblique subduction and slip partitioning at the southern Queen Charlotte margin. In this study, we re‐examine the thermal regime near the earthquake using...
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Rupture Process of the 2012 M w 7.8 Haida Gwaii Earthquake from an Empirical Green’s Function Method

Tiegan E. Hobbs, John F. Cassidy, Stan E. Dosso
Published: 07 April 2015
Bulletin of the Seismological Society of America (2015) 105 (2B): 1219–1230.
DOI: https://doi.org/10.1785/0120140175
... and Atmospheric Sciences, Georgia Institute of Technology, 311 Ferst Drive, Atlanta, Georgia 30332‐0340; [email protected] . 17 June 2014 Figure 1. Tectonic setting of the Haida Gwaii earthquake, including the trace of the Queen Charlotte fault ( QCF ). (a) The location of the 2012...
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Tectonics and Structure of the Queen Charlotte Fault Zone, Haida Gwaii, and Large Thrust Earthquakes

R. D. Hyndman
Published: 14 April 2015
Bulletin of the Seismological Society of America (2015) 105 (2B): 1058–1075.
DOI: https://doi.org/10.1785/0120140181
...R. D. Hyndman Abstract This article provides a summary of the structure and tectonic history of the Queen Charlotte transform fault zone off western Canada, as background to understanding the 2012 M w 7.8 thrust earthquake off Haida Gwaii. There was margin subduction prior to the Eocene. The fault...
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Coulomb Stress Changes Following the 2012 M w 7.8 Haida Gwaii, Canada, Earthquake: Implications for Seismic Hazard

T. E. Hobbs, J. F. Cassidy, S. E. Dosso, C. Brillon
Published: 07 April 2015
Bulletin of the Seismological Society of America (2015) 105 (2B): 1253–1264.
DOI: https://doi.org/10.1785/0120140158
... Sciences, Georgia Institute of Technology, 311 Ferst Drive, Atlanta, Georgia 30332‐0340; [email protected] . 7 June 2014 The 28 October 2012 (UTC) M w  7.8 Haida Gwaii earthquake ruptured more than 100 km along the seaward edge of the Queen Charlotte Terrace off the west...
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GPS Observations of Crustal Deformation Associated with the 2012 M w 7.8 Haida Gwaii Earthquake

Lisa Nykolaishen, Herb Dragert, Kelin Wang, Thomas S. James, Michael Schmidt
Published: 07 April 2015
Bulletin of the Seismological Society of America (2015) 105 (2B): 1241–1252.
DOI: https://doi.org/10.1785/0120140177
.... Cheung K. F. Kwong K. Koper K. D. ( 2013 ). The October 28, 2012 M w  7.8 Haida Gwaii underthrusting earthquake and tsunami: Slip partitioning along the Queen Charlotte fault transpressional boundary , Earth Planet. Sci. Lett. 375 , 57 – 70 , doi: 10.1016/j.epsl.2013.05.005...
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Plate Boundary Adjustments of the Southernmost Queen Charlotte Fault

Kristin M. M. Rohr
Published: 14 April 2015
Bulletin of the Seismological Society of America (2015) 105 (2B): 1076–1089.
DOI: https://doi.org/10.1785/0120140162
... mapped; it has propagated northward and overlaps the QCF by 120 km. Propagation is defined by strike‐slip earthquakes 3.9< M w <6.4, 500 m uplift of oceanic crust, and a fault scarp that disrupts margin parallel structures of the Queen Charlotte terrace. Part of the southern QCF has been reoriented...
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Impacts of the October 2012 Magnitude 7.8 Earthquake near Haida Gwaii, Canada

Alison L. Bird, Maurice Lamontagne
Published: 03 March 2015
Bulletin of the Seismological Society of America (2015) 105 (2B): 1178–1192.
DOI: https://doi.org/10.1785/0120140167
...Alison L. Bird; Maurice Lamontagne Abstract On 27 October 2012, a magnitude ( M w ) 7.8 earthquake occurred in the sparsely populated region of Haida Gwaii, British Columbia, Canada (formerly called the Queen Charlotte Islands). This was the second largest recorded earthquake in Canadian history...
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Intertidal Biological Indicators of Coseismic Subsidence during the M w 7.8 Haida Gwaii, Canada, Earthquake

Peter J. Haeussler, Robert C. Witter, Kelin Wang
Published: 14 April 2015
Bulletin of the Seismological Society of America (2015) 105 (2B): 1265–1279.
DOI: https://doi.org/10.1785/0120140197
...Peter J. Haeussler; Robert C. Witter; Kelin Wang Abstract The 28 October 2012 M w 7.8 Haida Gwaii earthquake was a megathrust earthquake along the very obliquely convergent Queen Charlotte margin of British Columbia, Canada. Coseismic deformation is not well constrained by geodesy, with only six...
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Spatiotemporal Distribution of Events during the First Week of the 2012 Haida Gwaii Aftershock Sequence

Amir Mansour Farahbod, Honn Kao
Published: 07 April 2015
Bulletin of the Seismological Society of America (2015) 105 (2B): 1231–1240.
DOI: https://doi.org/10.1785/0120140173
... Cape St. James earthquake in 1970 is located in the southernmost part of the Queen Charlotte fault ( QCF ). Operational permanent seismographic stations are designated by solid triangles, with a few that went out of service before the main earthquake in 2012 (open triangles). The color version...
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Source Characteristics of the 2012 Haida Gwaii Earthquake Sequence

Honn Kao, Shao‐Ju Shan, Amir Mansour Farahbod
Published: 07 April 2015
Bulletin of the Seismological Society of America (2015) 105 (2B): 1206–1218.
DOI: https://doi.org/10.1785/0120140165
... October 2012 at 03:04:6.3 UTC (20:04:6.3 PDT 27 October 2012 at the epicenter) west of Haida Gwaii (formerly the Queen Charlotte Islands), British Columbia (Fig.  1 ). With moment magnitude ( M w ) 7.8, the mainshock of this earthquake sequence is deemed the second largest seismic event in Canada since...
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Further studies on the focal mechanism and source rupture process of the 2012 Haida Gwaii, Canada, 7.8 moment magnitude earthquake

Dariush Motazedian, Yong Zhang, Shutian Ma, Yun-tai Chen
Published: 29 January 2016
Canadian Journal of Earth Sciences (2016) 53 (2): 129–139.
DOI: https://doi.org/10.1139/cjes-2015-0119
...Dariush Motazedian; Yong Zhang; Shutian Ma; Yun-tai Chen Abstract The 28 October 2012 Haida Gwaii, British Columbia, Canada, earthquake with a moment magnitude ( M W ) of 7.8 occurred along an east-dipping poorly known thrust fault beneath the Queen Charlotte Terrace. It was the largest thrust...
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An Abrupt Transition in the Mechanical Response of the Upper Crust to Transpression along the Queen Charlotte Fault

Anne M. Tréhu, Maren Scheidhauer, Kristin M. M. Rohr, Basil Tikoff, Maureen A. L. Walton, Sean P. S. Gulick, Emily C. Roland
Published: 03 March 2015
Bulletin of the Seismological Society of America (2015) 105 (2B): 1114–1128.
DOI: https://doi.org/10.1785/0120140159
... partitioning along the Queen Charlotte Fault transpressional plate boundary , Earth Planet. Sci. Lett. 375 , 57 – 70 . Leonard M. ( 2010 ). Earthquake fault scaling: Self‐consistent relating of rupture length, width, average displacement, and moment release , Bull. Seismol. Soc. Am. 100...
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Map showing the source region of the <span class="search-highlight">2012</span> Haida Gwaii <span class="search-highlight">earthquake</span> sequence. ...

Map showing the source region of the 2012 Haida Gwaii earthquake sequence. ...

Published: 07 April 2015
Figure 1. Map showing the source region of the 2012 Haida Gwaii earthquake sequence. The solid star marks the relocated epicenter of the mainshock. The triangles are seismograph stations used in the relocation (geographic coordinates are listed in Table  1 ). The Queen Charlotte terrace ( QCT
Image
Tectonic setting of the Haida Gwaii <span class="search-highlight">earthquake</span>, including the trace of the ...

Tectonic setting of the Haida Gwaii earthquake, including the trace of the ...

Published: 07 April 2015
Figure 1. Tectonic setting of the Haida Gwaii earthquake, including the trace of the Queen Charlotte fault ( QCF ). (a) The location of the 2012 mainshock (U.S. Geological Survey [USGS] focal mechanism) in relation to other large earthquakes in the region, including the 2012 M w  7.5 Craig
Image
Tectonic setting of the Haida Gwaii <span class="search-highlight">earthquake</span>, including the trace of the ...

Tectonic setting of the Haida Gwaii earthquake, including the trace of the ...

Published: 07 April 2015
Figure 1. Tectonic setting of the Haida Gwaii earthquake, including the trace of the Queen Charlotte fault ( QCF ). (a) The location of the 2012 mainshock (U.S. Geological Survey focal mechanism) in relation to other large earthquakes in the region, including the 2012 M w  7.5 Craig, Alaska
Image
Location map for the <span class="search-highlight">2012</span> M w  7.8 Haida Gwaii and 2013 M w  7.5 Craig ...

Location map for the 2012 M w  7.8 Haida Gwaii and 2013 M w  7.5 Craig ...

Published: 14 April 2015
is located west of the Queen Charlotte fault and is interpreted to be a narrow accretionary prism. (Inset) The earthquakes occurred offshore the western margin of northern North America. Barbs indicate subduction of the Juan de Fuca (JDF) plate and smaller plates beneath North America at the Cascadia
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Tectonic setting and historical seismicity (1898–2013) of Haida Gwaii, off ...

Tectonic setting and historical seismicity (1898–2013) of Haida Gwaii, off ...

Published: 03 March 2015
in 2012 is shown in gray scale. The figure’s inset is of a simplified fault model (adapted from James et al. , 2013 ) showing thrust faulting beneath the Queen Charlotte fault, with the 2012 M w  7.8 thrust event (shown in red) believed to have occurred between the Pacific plate and the accretionary
Image
Location of the study area in western Canada, the main tectonic features, a...

Location of the study area in western Canada, the main tectonic features, a...

Published: 07 April 2015
Figure 1. Location of the study area in western Canada, the main tectonic features, and the two largest instrumentally recorded earthquakes of the region (and of Canada) in 1949 and 2012. The M  7.4 Cape St. James earthquake in 1970 is located in the southernmost part of the Queen Charlotte
Journal Article

Deposition, deformation, and flexure in a transpressional trough, Queen Charlotte fault, offshore Haida Gwaii (British Columbia, Canada)

Kristin M.M. Rohr, Michael Riedel, Kevin P. Furlong
Journal: Geosphere
Published: 27 November 2024
Geosphere (2024)
DOI: https://doi.org/10.1130/GES02777.1
... mechanisms occurred in the abundant aftershock sequence one year after the 2012 M7.8 earthquake occurred in the trough (Kao et al., 2015). In fact, most aftershocks within two months of the main shock took place in the trough in a 10 1 5-km-w ide band at the base of the Queen Charlotte terrace (Farahbod...
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