A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Seismic activity in the McNaughton Lake area, Canada
Abstract Filling of McNaughton Lake, with a capacity at full load of25 · 109m3 and maximum depth 191 m, was initiated on March 29, 1973. An earthquake swarm of 747 events (ML > 0) with largest eventML = 4.7 occurred within 17 km of the reservoir just prior to loading. Subsequent to this, three swarms of 194, 292 and 22 events with maximumML = 4.1 occurred in the same region; however, no earthquakes have occurred between the reservoir and the swarm area. The level of regional seismic activity is similar to that observed prior to loading. The distribution of this activity, excluding swarm events, exhibits a spatial pattern similar to that recorded earlier by regional seismic stations, except that several events appear to be associated with the fault underlying the Rocky Mountain Trench in which the lake is formed. During a loading-unloading cycle in which the maximum water depth varied from 98 m to 171 m to 131 m, the change ofvp was less than 2%. This indicates that no significant change in dilatancy or degree of water saturation occurred in the upper crustal layer during this cycle.
Seismic activity in the McNaughton Lake area, Canada
Abstract Filling of McNaughton Lake, with a capacity at full load of25 · 109m3 and maximum depth 191 m, was initiated on March 29, 1973. An earthquake swarm of 747 events (ML > 0) with largest eventML = 4.7 occurred within 17 km of the reservoir just prior to loading. Subsequent to this, three swarms of 194, 292 and 22 events with maximumML = 4.1 occurred in the same region; however, no earthquakes have occurred between the reservoir and the swarm area. The level of regional seismic activity is similar to that observed prior to loading. The distribution of this activity, excluding swarm events, exhibits a spatial pattern similar to that recorded earlier by regional seismic stations, except that several events appear to be associated with the fault underlying the Rocky Mountain Trench in which the lake is formed. During a loading-unloading cycle in which the maximum water depth varied from 98 m to 171 m to 131 m, the change ofvp was less than 2%. This indicates that no significant change in dilatancy or degree of water saturation occurred in the upper crustal layer during this cycle.
Seismic activity in the McNaughton Lake area, Canada
Ellis, R.M. (author) / Dragert, H. (author) / Ozard, J.M. (author)
Engineering Geology ; 10 ; 227-238
1976-10-05
12 pages
Article (Journal)
Electronic Resource
English
[De]Bordering Indeterminacy by Chelle McNaughton
| British Library Online Contents | 2010
EXHIBITION - [De]Bordering Indeterminacy - by Chelle McNaughton
| Online Contents | 2010
A Brit abroad - Balfour Beatty's Andrew McNaughton on spotting the next market early
Online Contents | 2012
Making rail the transport of choice - Andrew McNaughton previews his speech to the IET
Online Contents | 2014