The
Charlevoix Seismic Zone, Quebec, Canada
[click image to view at full size]
Chromo-stereoscopic image (about 80 km by 90 km; 30-m pixel size)
that integrates a RADARSAT ortho-image with terrain elevation and
seismicity (each data set with its own colour range). For the elevation,
the color range varies from 0 m in blue to 1100 m in red. The topography
of the north-shore is a mixture of rugged highlands plateaus
and valleys separated by dramatic changes in elevation. A Devonian
(350 Ma) meteorite impact created a semicircular depression 56
km in diameter. The earthquake hypocenters (circles) for January
1978-September 1999 are overlain, with colors related to focal
depth. White triangles are the stations of the Charlevoix Local
Seismograph Network, part of the Canadian National Seismograph
Network.
Contributed by:
Maurice Lamontagne,
National Hazards and Emergency Response Program, Natural Resources
Canada
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