A5057543314- earthquake and tectonic studies
- Seismology and Earthquake Studies
- Seismic Waves and Analysis
- Landslides and related hazards
- Seismic Performance and Analysis
- Geological Modeling and Analysis
- Geological and Geochemical Analysis
- High-pressure geophysics and materials
- Seismic Imaging and Inversion Techniques
- Geology and Paleoclimatology Research
- Earthquake Detection and Analysis
- Geological formations and processes
- Geological Studies and Exploration
- Structural Health Monitoring Techniques
- Methane Hydrates and Related Phenomena
- Water Quality Monitoring and Analysis
- Water Quality Monitoring Technologies
- Hydraulic Fracturing and Reservoir Analysis
- Drilling and Well Engineering
- Biosensors and Analytical Detection
- Geotechnical and Geomechanical Engineering
- Dam Engineering and Safety
- Geotechnical Engineering and Underground Structures
- Structural Engineering and Vibration Analysis
- Geological and Geophysical Studies
Natural Resources Canada
2009-2023
Geological Survey of Canada
1993-2015
University Medical Center of the Johannes Gutenberg University Mainz
2015
Johannes Gutenberg University Mainz
2015
Western University
2013
Health Research and Educational Trust
2011
McGill University
2010
Université de Sherbrooke
2010
University of Ottawa
2010
Polytechnique Montréal
2010
Abstract Seismic hazard modeling is a multidisciplinary science that aims to forecast earthquake occurrence and its resultant ground shaking. Such models consist of probabilistic framework quantifies uncertainty across complex system; typically, this includes at least two model components developed from Earth science: seismic source motion models. Although there no scientific prescription for the length, most common analyses consider forecasting windows 30 50 years, which are typically an...
Cores from Cascadia deep‐sea channel contain sequences of turbidites that can be correlated and dated by the first occurrence volcanic glass Mount Mazama eruption (6845±50 radiocarbon yrBP). Turbidity currents tributaries appear to have occurred synchronously form single deposits in main channel, there being only 13 turbidite lower since eruption, instead twice as many expected if had behaved independently. In addition Channel, post‐Mazama been deposited Astoria Canyon at two sites off Cape...
Ground-motion prediction equations (GMPEs) and their epistemic uncertainty are a key input to seismic hazard assessments, because the GMPEs specify expected ground-shaking amplitudes as function of magnitude distance. We describe simple efficient approach definition for use in mapping Canada. The defines lower, central, upper GMPE each type event (eastern crustal, western interface, inslab, offshore) that contributes hazard, by considering alternative published data may be used constrain...
A new seismic hazard model, the fourth national model for Canada, has been devised by Geological Survey of Canada to update Canada's current (1985) maps. The incorporates knowledge from recent earthquakes (both Canadian and foreign), strong ground motion relations describe how shaking varies with magnitude distance, newly recognized Cascadia subduction earthquakes, a more systematic approach reference site conditions. Other innovations are computation at 2% in 50 year probability level, use...
We present Global Positioning System (GPS) measurements that constrain the amplitude, pattern, and origin of crustal deformation in Saint Lawrence valley, Québec, one most seismically active regions eastern North America. The GPS network shows coherent southeastward motion 0.6 ± 0.2 mm yr −1 , relative to America, uplift 2.6 0.4 . Network average horizontal strain rates are mostly ESE‐WNW shortening at (1.7 1.0) × 10 −9 rate across Charlevoix seismic zone is about twice as big regional...
Tilted and uplifted marine terraces in southern Oregon show progressive landward tilting of the coastal ranges at about 5–16 × 10 −8 rad. yr −1 for last 0.25 m.y. Tide gauges Washington British Columbia, ten resurveyed leveling lines running inland from coast, indicate contemporary (down‐to‐the‐east) tilt rates 1–12 averaged over periods to 50 years. The traverse, cut across, dipping Cenozoic strata: Pleistocene (dips 3°), Mio‐Pliocene 30°) Eocene 60°). Southern Cape Blanco Siletz River...
The purpose of this paper is to provide a summary the evolution seismic design in Canada. This presents significant changes approach taken determining hazards and hazard maps, describes provisions National building code introduction important parameters base shear such as period vibration structure, influence type soil, concepts ductility energy dissipation capacity elements structures are presented. levels shears, determined from different versions Building Code Canada, compared for...
The mb 5.7 Miramichi, New Brunswick, earthquake of 9 January 1982 was located by comparison to the aftershock distribution in central Canada, at 47.00°N, 66.60°W with a focal depth 7 km and an uncertainty ± 3 on each spatial coordinates. main shock followed long complex sequence four events M ≧ 4.5 more than 800 1.0 until 30 June 1982. aftershocks were studied three temporary field networks set up epicentral areas from 10 20 January, 2 April, 17 23 permanent Canadian Seismograph Networks....
Diversified phenomena are contributing to our knowledge of various aspects the stress field and origin crustal stresses in eastern Canada. Both situ measurements (to 2100 m) earthquake fault plane solutions upper crust (∼5–20 km) indicate that maximum horizontal is greater than vertical. Absence earthquakes lower (>20 implies a comparatively deviatoric this layer. Stress directions as determined from both an overprint confined ENE octant, which correlates with direction predicted by...
This study presents a comprehensive evaluation of whole-body vibration (WBV) exposure among operators the URSUS 5312 agricultural tractor during primary and secondary tillage operations, including ploughing, harrowing, ridging. The investigation focuses on influence operational variables—namely forward velocity operator body mass—on transmission vibrational energy through operator’s seat interface. Vibration data were acquired using GM63A meter mounted base, analysed in accordance with ISO...
A multi‐institutional research initiative, POLARIS, is providing scientists with unprecedented opportunities to map Earth structure and assess earthquake hazards across Canada. By completion of the initiative's installation phase in August 2005, deployments POLARIS (Portable Observatories for Lithospheric Analysis Research Investigating Seismicity) instruments will include 100 telemetered broadband seismograph systems, 10 continuous‐recording magnetotelluric (MT) devices (devices that record...
On the basis of earthquake statistics from Canadian hazard model, we estimate rates seismic moment and deformation in zones eastern Canada. We use a logic tree approach to derive median values 66% confidence intervals for models based on cluster distributions geological tectonic structures. Typical are low, (0.1–1) × 10 17 N m yr −1 , equivalent magnitude M w = 7 every 350–3500 years each zone. In few zones, such as Baffin Bay, reach (2–10) . Expressed terms relative velocity between zone...
Nine leveling routes that extend inland from near the coast of Oregon and Washington indicate consistent landward tilting 600‐km‐long coastal ranges at about 3 × 10 −8 rad yr −1 . Analysis tide gauge observations indicates with roughly same magnitude sense as measurements. These short‐term tilt rates (10‐80 yr) are comparable longer term (≈100,000 deduced tilted marine terraces. Contemporary is interpreted to result continuing subduction Juan de Fuca plate beneath North America. The...
Abstract The November 25, 1988 Saguenay, Québec earthquake (mb 5.9) was preceded by a foreshock 62 hours earlier 4.4) and followed over 50 aftershocks, of which only two have been larger than magnitude 3. unusually large 29 km depth the main shock is well determined using field network deployed after foreshock. Nearly all aftershock activity shallower shock, suggesting that rupture propagated upwards. event produced unexpectedly amounts high frequency energy, as evidenced value mbLg (6.5)...