Options
22‐kyr‐Long Record of Surface Faulting Along the Source of the 30 October 2016 Earthquake (Central Apennines, Italy), From Integrated Paleoseismic Data Sets
Author(s)
Language
English
Obiettivo Specifico
5T. Sismologia, geofisica e geologia per l'ingegneria sismica
7A. Geofisica per il monitoraggio ambientale
4IT. Banche dati
Status
Published
JCR Journal
JCR Journal
Peer review journal
Yes
Title of the book
Issue/vol(year)
8/124 (2019)
Pages (printed)
9021-9048
Issued date
2019
Subjects
04. Solid Earth
04.04. Geology
04.06. Seismology
04.07. Tectonophysics
Abstract
We integrate paleoseismic data sets along the Mt. Vettore‐Mt. Bove normal fault system
rupturing at the surface in the 30 October 2016 Norcia earthquake. Through the analysis of new trenches
from this work and a review of the preexisting data, we correlate events among trench sites along antithetic
and synthetic fault splays. We recognize seven M 6.5, 2016 Norcia‐type (or larger) surface‐faulting events in
the last ~22 kyr, including 2016. Before 2016, one event occurred in the past two millennia (260–575 CE)
and possibly corresponds to the event damaging Rome in 443 or 484/508 CE. Three previous events occurred
between 10590 and 415 BCE, whereas the two oldest ones date between 19820 and 16540 BCE. The
average recurrence time is 3,360–3,640 years for the last ~22 kyr and 1,220–1,970 years for the last ~4 kyr. We
infer a minimum dip‐slip rate of 0.26–0.38 mm/year on the master fault in the central portion of the Mt.
Vettore–Mt. Bove normal fault system and a dip‐slip rate of at least 0.10 mm/year on the southernmost
portion. We infer a Middle–Late Pleistocene inception of the long‐term scarp of the investigated splays. The
along‐strike variation of slip rates well reproduces the trend of the 2016 surface slip; thus, the time window
exposed in the trenches is representative for the present fault activity. Based on trenching data, different
earthquake rupture scenarios should be also considered for local hazard assessment.
rupturing at the surface in the 30 October 2016 Norcia earthquake. Through the analysis of new trenches
from this work and a review of the preexisting data, we correlate events among trench sites along antithetic
and synthetic fault splays. We recognize seven M 6.5, 2016 Norcia‐type (or larger) surface‐faulting events in
the last ~22 kyr, including 2016. Before 2016, one event occurred in the past two millennia (260–575 CE)
and possibly corresponds to the event damaging Rome in 443 or 484/508 CE. Three previous events occurred
between 10590 and 415 BCE, whereas the two oldest ones date between 19820 and 16540 BCE. The
average recurrence time is 3,360–3,640 years for the last ~22 kyr and 1,220–1,970 years for the last ~4 kyr. We
infer a minimum dip‐slip rate of 0.26–0.38 mm/year on the master fault in the central portion of the Mt.
Vettore–Mt. Bove normal fault system and a dip‐slip rate of at least 0.10 mm/year on the southernmost
portion. We infer a Middle–Late Pleistocene inception of the long‐term scarp of the investigated splays. The
along‐strike variation of slip rates well reproduces the trend of the 2016 surface slip; thus, the time window
exposed in the trenches is representative for the present fault activity. Based on trenching data, different
earthquake rupture scenarios should be also considered for local hazard assessment.
Type
article
File(s)
Loading...
Name
Cinti_et_al-2019-Journal_of_Geophysical_Research__Solid_Earth.pdf
Description
Open Access
Size
3.39 MB
Format
Adobe PDF
Checksum (MD5)
af104d9a47e74ed61a76f8a1b53727b6
Loading...
Name
Cinti_et_al-2019-Journal_of_Geophysical_Research__Solid_Earth.pdf
Size
9.57 MB
Format
Adobe PDF
Checksum (MD5)
4e1f00d8062dd00038ce75709b40829f