Catalogo Articoli (Spogli Riviste)

OPAC HELP

Titolo:
LAKE-SEDIMENTS AND HOLOCENE SEISMIC HAZARD ASSESSMENT WITHIN THE ST-LAWRENCE VALLEY, QUEBEC
Autore:
OUELLET M;
Indirizzi:
UNIV QUEBEC,INRS,FRESHWATER CTR ST FOY PQ G1V 4C7 CANADA
Titolo Testata:
Geological Society of America bulletin
fascicolo: 6, volume: 109, anno: 1997,
pagine: 631 - 642
SICI:
0016-7606(1997)109:6<631:LAHSHA>2.0.ZU;2-Y
Fonte:
ISI
Lingua:
ENG
Soggetto:
GROUND MOTION; LARGE EARTHQUAKES; EASTERN CANADA; 1988 SAGUENAY; PUGET-SOUND; DEAD-SEA; CHARLEVOIX; MICROSEISMICITY; LIQUEFACTION; DEFORMATION;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
81
Recensione:
Indirizzi per estratti:
Citazione:
M. Ouellet, "LAKE-SEDIMENTS AND HOLOCENE SEISMIC HAZARD ASSESSMENT WITHIN THE ST-LAWRENCE VALLEY, QUEBEC", Geological Society of America bulletin, 109(6), 1997, pp. 631-642

Abstract

Seismoacoustic profiling of 34 lacustrine basins within the St. Lawrence Valley in southern Quebec shows the presence of faulting, convolution, diapirs, and gravitational slumping beneath, within, and at the surface of the Holocene deep-water-sediment zone, In small, deep lakes in the highlands of the Charlevoix-Tadoussac region, a thin (2-6 m) Holocene organic sedimentary unit, which directly overlies over a seismo-opaque substratum, exhibits considerable deformation. These subaquatic sediment disruptions are exclusively restricted to lakes located within a radius of about 100 km of the well-known Charlevoix seismic zone. According to the present seismicity of the region and the spatial distribution of the slump frequency, the minimal-triggering threshold for earthquakes was found to be as low as 0.17 g. These results indicatethat the Charlevoix seismic zone has occupied the same area throughout at least the Holocene, and it appears that no major seismic shock has occurred over the past several thousand years outside of the zone.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 24/09/20 alle ore 08:16:57