The Saguenay (Quebec) earthquake of November 25, 1988: seismologic data and geologic setting

Berger, Reynald Du; Roy, Denis; Lamontagne, Maurice; Woussen, G.; North, Robert G.; Wetmiller, R J

doi:10.1016/0040-1951(91)90385-6

Cited by 42 publications

(19 citation statements)

References 25 publications

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“…However, this absence of observations could merely reflect the slow rate at which substantial intraplate events occur. In central and eastern North America, only a handful of events with magnitudes close to (or larger than) M W 6 have occurred since 1886, including earthquakes in Charleston, Missouri (1895) (Johnston, 1996b); Charlevoix, Quebec (1925) (e.g., Bent, 1992); Timiskaming, Quebec (1935) (Hodgson, 1936); Miramichi, New Brunswick (1982) (e.g., Basham and Kind, 1986); Saguenay, Quebec (1988) (Duberger et al, 1991); and Ungava (1989) (e.g., Bent, 1994). Results from interplate regions, however, suggest that remote triggering is associated with earthquakes of M W 7 and larger (Gomberg and Davis, 1996).…”

Section: Introductionmentioning

confidence: 99%

Intraplate Triggered Earthquakes: Observations and Interpretation

Hough¹

2003

Bulletin of the Seismological Society of America

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We present evidence that at least two of the three 1811-1812 New Madrid, central United States, mainshocks and the 1886 Charleston, South Carolina, earthquake triggered earthquakes at regional distances. In addition to previously published evidence for triggered earthquakes in the northern Kentucky/southern Ohio region in 1812, we present evidence suggesting that triggered events might have occurred in the Wabash Valley, to the south of the New Madrid Seismic Zone, and near Charleston, South Carolina. We also discuss evidence that earthquakes might have been triggered in northern Kentucky within seconds of the passage of surface waves from the 23 January 1812 New Madrid mainshock. After the 1886 Charleston earthquake, accounts suggest that triggered events occurred near Moodus, Connecticut, and in southern Indiana. Notwithstanding the uncertainty associated with analysis of historical accounts, there is evidence that at least three out of the four known M W 7 earthquakes in the central and eastern United States seem to have triggered earthquakes at distances beyond the typically assumed aftershock zone of 1-2 mainshock fault lengths. We explore the possibility that remotely triggered earthquakes might be common in low-strain-rate regions. We suggest that in a low-strain-rate environment, permanent, nonelastic deformation might play a more important role in stress accumulation than it does in interplate crust. Using a simple model incorporating elastic and anelastic strain release, we show that, for realistic parameter values, faults in intraplate crust remain close to their failure stress for a longer part of the earthquake cycle than do faults in high-strain-rate regions. Our results further suggest that remotely triggered earthquakes occur preferentially in regions of recent and/or future seismic activity, which suggests that faults are at a critical stress state in only some areas. Remotely triggered earthquakes may thus serve as beacons that identify regions of long-lived stress concentration.

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Section: Introductionmentioning

confidence: 99%

Intraplate Triggered Earthquakes: Observations and Interpretation

Hough¹

2003

Bulletin of the Seismological Society of America

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“…Recently, Roden-Tice and Tremblay (2008) have reported apatite fission tracks evidence for Late Jurassic to Early Cretaceous tectonic inversion of faults related to the SLRS in the Quebec City and Charlevoix areas. Cenozoic faulting increments are even likely considering that the SLRS represents the most active seismic zone of eastern North America (Hasegawa, 1986;Adams and Basham, 1989;Du Berger et al, 1991;Lamontagne et al, 2000). This contribution presents new isotopic age constraints obtained from K-Ar investigation of clay-rich fractions of fault rocks related to the SLRS.…”

Section: Introductionmentioning

confidence: 90%

“…Plusieurs auteurs ont mis en évidence des périodes d'activités tectoniques liées à ce système de rift. Selon ces auteurs (Kumarapeli, 1985 ;Hayward et al, 2001 ;Rocher et Tremblay, 2001 ;Lemieux et al, 2003 ;Roden-Tice et Tremblay, 2008 ;Hasegawa, 1986 ;Adams et Basham, 1989 ; Du Berger et al, 1991 ;Lamontagne et al, 2000), ces périodes d'activités varient entre le Cambrien, l'Ordovicien Moyen, le Dévonien, le Crétacé ou même le Cénozoïque. Malgré des évidences d'activités tectoniques attribuables au système de rift Saint-Laurent qui postdatent les phases orogéniques des Appalaches sur la marge laurentienne (Glasmacher, 2003) Enfin, un troisième chapitre présente des âges issus de dykes de lamprophyres provenant de la région du Bas-Saint-Laurent, près de Rivière-du-Loup.…”

Section: Principes Des Methodes Analytiques Utilisees 23unclassified

“…The metamorphic rocks that are currently exposed at the surface were equilibrated at a depth of ca. 20-25 km (Du Berger et al, 1991). Only a few K-Ar and 40 Ar/ 39 Ar age data are available for these Grenvillian rocks, and suggest that tectonic uplift and cooling below ca.…”

Section: Geological Settingmentioning

confidence: 97%

“…Les roches métamorphiques actuellement exposées à la surface ont atteint un équilibre métamorphique à une profondeur d'environ 20-25 km (Du Berger et al, 1991). Selon Anderson (1988), le soulèvement tectonique et le refroidissement sous les températures de fermeture des systèmes isotopiques K-Ar et 40 Ar/ 39 Ar (ca.…”

Section: Cadre Géologique Et éTat Des Connaissancesunclassified

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Géochronologie K-Ar et transfert de matière le long de systèmes de failles et de fractures dans la lithosphère continentale :

Sasseville¹

2009

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Groundwater recharge over the past 100 years: Regional spatiotemporal assessment and climate change impact over the Saguenay‐Lac‐Saint‐Jean region, Canada

Boumaiza

Walter

Chesnaux

et al. 2022

Hydrological Processes

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Proper knowledge of potential groundwater recharge (PGR) and its spatiotemporal distribution are essential for sustainable groundwater management, especially within the context of climate change. Here, a robust GIS‐based water budget framework was developed to estimate PGR at a regional scale and map its spatial distribution. This framework is demonstrated over the Saguenay‐Lac‐Saint‐Jean region (13 200 km2) of Quebec (Canada). The PGR mapping process was based on a model incorporating water budget components. The vertical inflows (VI) include water amounts from rainfall and snowmelt, whereby the latter was assessed using HYDROTEL model. VI were combined with the maximum and minimum temperatures to estimate actual evapotranspiration (AET), while the surface runoff (RuS) was assessed using the curve number method. Field observations of annual variation in temperatures and the water budget components, over a period of 100 years (1910–2009), were used to provide a comprehensive overview of the effects of climate change on PGR. The last 10 years of the observation period (i.e., 2000–2009) indicate that 6% of the study area has PGR rates of 35%–50%. PGR rates of 20%–35% occur in 58% of the study area, while 36% have PGR of 5%–20%. The trend analysis of temperature time series reveals an average of 1.1 ± 0.6°C increase over 100 years. Also, an increase in the water budget components is observed. Despite the increasing trends of RuS and AET, PGR still showed an increasing trend with an average increase of 0.7 ± 0.4 mm/year over the past 100 years. This observation indicates that the increase in VI was enough to compensate for the increases in AET and RuS. This finding of an increasing PGR in the study area provides useful information for future studies focusing on predicting long‐term PGR evolution and for the development of efficient long‐term groundwater management strategies.

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The Saguenay (Quebec) earthquake of November 25, 1988: seismologic data and geologic setting

Cited by 42 publications

References 25 publications

Intraplate Triggered Earthquakes: Observations and Interpretation

Intraplate Triggered Earthquakes: Observations and Interpretation

Géochronologie K-Ar et transfert de matière le long de systèmes de failles et de fractures dans la lithosphère continentale :

Groundwater recharge over the past 100 years: Regional spatiotemporal assessment and climate change impact over the Saguenay‐Lac‐Saint‐Jean region, Canada

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