Seismic gap
A seismic gap is a segment of an active fault known to produce significant earthquakes that has not slipped in an unusually long time, compared with other segments along the same structure. There is a hypothesis or theory that states that over long periods, the displacement on any segment must be equal to that experienced by all the other parts of the fault.[1] Any large and longstanding gap is, therefore, considered to be the fault segment most likely to suffer future earthquakes.
The applicability of this approach has been criticised by some
Examples
Loma Prieta Seismic Gap, California
Prior to the
Central Kuril gap, Russia
Immediately following the
Central Himalayan Gap, India
Although there had been earthquakes to the west (near Delhi) in 1905, and to the east (
Cascadia, United States–Canada
The only known damaging earthquakes to have occurred in the Cascadia subduction zone since the 1700 Cascadia earthquake are the 1946 Vancouver Island earthquake and 2001 Nisqually earthquake.
References
- S2CID 129377355.
- .
- ^ ANSS: Loma Prieta 1989, Origin (accessed 2019-04-01).
- ^ Lessons Learned from the Loma Prieta, California, Earthquake of October 17, 1989. U.S.G.S. Circular 1045 N.B. requires free ie djvu plug-in to view
- ^ Baranov, B., Lobkovsky, L., Ivaschenko, A., Kulinich, R. & B. Karp, B. 2007. The Central Kuril Earthquakes and Tsunamis of 15 November 2006 and 13 January 2007: Findings of a Pre-event geophysical field survey. EGU Abstracts
- ^ Lutgens, F. K., Tarbuck, E. J., Tasa, D. 2012. Essentials of Geology. Prentice Hall. p 355.