Typical practice for seismic hazard assessment (SHA) in stable continental regions (SCRs) uses a global-analogues approach to amalgamate seismicity data from SCRs globally. This approach is premised on all SCR crust sharing the same seismogenic potential. Is this approach valid? How can we better define seismogenic analogues in low strain regions? Are earthquake recurrence and long-term slip rates meaningful concepts in these settings for the purpose of seismic hazard analysis?
This session seeks to integrate paleoseismic, geomorphic, geodetic, geophysical and seismological datasets to provide insight into the earthquake cycle in low-strain regions. It will draw upon recent advances in high-resolution topography, geochronology, satellite geodesy techniques, subsurface imaging techniques, longer seismological records, high-density geophysical networks and unprecedented computational power to explore the driving mechanisms for earthquakes in low-strain settings. A comparison of the range of seismic behavior as a function of the different geodynamic attributes of these settings (e.g., crustal age, structure, stress, geology, antecedent
tectonics (inheritance); evolving boundary conditions; Quaternary processes (glaciation), etc), may provide a means to better refine and constrain the types of features or active processes that warrant treatment as analogues for seismic hazard assessment. We welcome contributions that (1) present new observations that place constraints on earthquake occurrence in low-strain regions, (2) explore patterns of stable or temporally varying earthquake recurrence, and (3) provide insight into the mechanisms that control earthquakes in regions of slow deformation via observation and/or
modeling.
Schedule :
- 10:45-11:15 : Zoom session (see link below) - Presentations only (no questions and answers, this will take place in the chat), presenters are invited to share their screen
- 11:15-12:30 : EGU chat session - questions and answers for all presenters
------------------------------------- Zoom session link ------------------------------------
Join from PC, Mac, Linux, iOS or Android: https://videoconf-colibri.zoom.us/j/98788480483
Or iPhone one-tap: 308810988,98788480483# or 211202618,98788480483#
Or Telephone:
Dial: +351 308 810 988 (Portugal Toll) or +351 211 202 618 (Portugal Toll)
Meeting ID: 987 8848 0483
International numbers available: https://videoconf-colibri.zoom.us/u/adNZCcmlD1
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The Zoom session will start with a 10 minute presentation by Eulalia Gracia for a solicited talk. It will be followed by 6 3-minute long presentations.
Then, we will switch to the text-based chat for questions and answers ; 5 minutes for each presentation. Each presentation will be introduced by the conveners.
The schedule is given below.
ZOOM (10:45-11:15) -
10:45-10:55 E. Gracia Earthquake crisis unveils the growth of an incipient continental fault system
10:55-10:58 J. Ritz The Mw4.9 Le Teil surface-rupturing earthquake in southern France: New insight on seismic hazard assessment in stable continental regions
10:58-11:01 A. Vallage Full characterization of the ML 5.4 2019/11/11 Le Teil earthquake in France based on a multi-technology approach
11:01-11:04 T. King The 2016 Mw 6.1 Petermann Ranges earthquake rupture, Australia: another “one-off” stable continental region earthquake
11:04-11:07 C.-H. Tsai Palaeo-earthquake magnitudes on the Dzhungarian fault, N. Tien shan, and implications for the rupture processes of intraplate strike-slip faults
11:07-11:10 C. Daxer Quantitative paleoseismology in Carinthia, Eastern Alps: Calibrating the lacustrine sedimentary record with historical earthquake data
11:10-11:13 M. Moorkamp Integrated geophysical analysis of the April 2017 Moiyabana intra-plate earthquake, Botswana
TEXT-BASED EGU CHAT (11:15-12:30)
11:15-11:20 E. Gracia Earthquake crisis unveils the growth of an incipient continental fault system
11:20-11:25 O. Olesen Large magnitude earthquakes of late Holocene age in the Precambrian of Finnmark, Northern Norway
11:25-11:30 J. Ritz The Mw4.9 Le Teil surface-rupturing earthquake in southern France: New insight on seismic hazard assessment in stable continental regions
11:30-11:35 A. Vallage Full characterization of the ML 5.4 2019/11/11 Le Teil earthquake in France based on a multi-technology approach
11:35-11:40 T. King The 2016 Mw 6.1 Petermann Ranges earthquake rupture, Australia: another “one-off” stable continental region earthquake
11:40-11:45 C.-H. Tsai Palaeo-earthquake magnitudes on the Dzhungarian fault, N. Tien shan, and implications for the rupture processes of intraplate strike-slip faults
11:45-11:50 H. Choi What if a larger earthquake would occur at the causative fault of the Gyeongju earthquake with ML 5.8 on September 11, 2016 in South Korea?
11:50-11:55 J. Kley Seismotectonic regions for Germany - Concept and results
11:55-12:00 D. Clark Neotectonic constraint on models of strain localisation within Australian Stable Continental Region (SCR) crust
12:05-12:10 C. Daxer Quantitative paleoseismology in Carinthia, Eastern Alps: Calibrating the lacustrine sedimentary record with historical earthquake data
12:10:12:15 R. Minetto High-resolution catalog of the the Maurienne Swarm (French Alps) based on template matching and double-different relocation
12:15-12:20 M. Moorkamp Integrated geophysical analysis of the April 2017 Moiyabana intra-plate earthquake, Botswana
12:20-12:25 C. Reyes-Carmona Evidence of recent activity in the Camorro Fault (Central Betics, Southern Spain)
12:25-12:30 - Additional questions and time for discussion