Seismic precursory patterns before a cliff collapse and critical-point phenomena

Details Seismic precursory patterns before a cliff collapse and critical-point phenomena Seismic precursory patterns before a cliff collapse and critical-point phenomena

2007-09-17

arxiv.org/abs/0709.2651v1

Geophysical Research Letters 32, 8 (2005) L08314

Physics

Geophysics

Scientific paper

10.1029/2004GL022270

We analyse the statistical pattern of seismicity before a 1-2 103 m3 chalk cliff collapse on the Normandie ocean shore, Western France. We show that a power law acceleration of seismicity rate and energy in both 40 Hz-1.5 kHz and 2 Hz-10kHz frequency range, is defined on 3 order of magnitude, within 2 hours from the collapse time. Simultaneously, the average size of the seismic events increases toward the time to failure. These in-situ results are derived from the only station located within one rupture length distance from the rock fall rupture plane. They mimic the "critical point" like behavior recovered from physical and numerical experiments before brittle failures and tertiary creep failures. Our analysis of this first seismic monitoring data of a cliff collapse suggests that the thermodynamic phase transition models for failure may apply for cliff collapse.

Affiliated with

Also associated with

No associations

Rating

Seismic precursory patterns before a cliff collapse and critical-point phenomena does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Seismic precursory patterns before a cliff collapse and critical-point phenomena, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Seismic precursory patterns before a cliff collapse and critical-point phenomena will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-378991