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Qiryat-Shemona Rockfalls

OSL dates Qiryat-Shemona
Fig. 10

Summary of OSL ages (black circles with error bars) plotted in chronological order and selected historical earthquakes suggested as rockfall triggers (shown as vertical gray lines, chronologically labeled at the top axis); see text for details.

Kanari et al (2019)


Introduction
Criteria used to identify historical earthquakes as triggering observed rockfalls

The criteria used by Kanari (2008) to identify historical earthquakes as triggering the observed rockfalls included:

  1. Estimated minimum MMI of IX
  2. Calculated Moment-Magnitude greater than or equal to 6.5
  3. distance to the site not exceeding 100 km.
Kanari (2008) surmised that these conditions satisfied Keefer (1984)'s upper limit for disrupted slides or falls triggered by earthquakes. Note that there is no paleoseismic evidence for the mid 8th century CE earthquakes from any of the rockfalls observed and dated by Kanari et al (2019) however It is possible that earthquake generated rockfalls from mid 8th century CE earthquakes were displaced by subsequent quakes or which were not observed by Kanari et al (2019).

Maps, Aerial Views, OSL Age summaries, and Photos
Maps, Aerial Views, OSL Age summaries, and Photos

Maps and Aerial Views

  • Qiryat-Shemona Rockfall area from Kanari et al. (2019)
  • Qiryat-Shemona Rockfall area in Google Earth
  • Qiryat-Shemona Rockfall area on govmap.gov.il

OSL Age summaries

Plots

Kanari et al (2019)

Fig. 10

Summary of OSL ages (black circles with error bars) plotted in chronological order and selected historical earthquakes suggested as rockfall triggers (shown as vertical gray lines, chronologically labeled at the top axis); see text for details.

Kanari et al (2019)


Kanari (2008)

Fig. 4-7

Qiryat-Shemona OSL ages and suggested rockfall triggers. OSL age results for the past 8000 years in black circles with error bars; ages of earthquakes determined by Yagoda et al. (2007) in gray diamonds and by Kagan et al. (2005) in gray triangle; corresponding dates of earthquakes suggested as rockfall triggers in gray lines and labeled at top axis (see Table 4-2). QS-2 (55.7±7.6 ka) excluded from graph for very large uncertainty range.

Kanari (2008)


Table - Kanari (2008)

Table 4-1

Rockfall Triggering Candidate Large Scale Historical Earthquakes

Two large earthquakes, 1759 AD and 1837 AD, are excluded from the table since no block was dated to later than 1300 AD (including uncertainty range).

Kanari (2008)


Photos

  • Fallen rock in Qiryat-Shemona Rockfall area from Kanari et al. (2019)

Master Seismic Events Table
Master Seismic Events Table

References
References