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![(A) Map view of the Campotosto Seismic Zone (CSZ), central Italy, showing epicenter distribution (moment magnitude [Mw] ≥ 2.0) of seismic events that took place within five days after each of the main events. Modeled seismogenic faults are displayed with the related focal mechanisms (http://cnt.rm.ingv.it/en/tdmt; Scognamiglio et al., 2006). Events associated with the two distinct seismic sequences are shown in different tonality of brown depending on hypocentral depth (January 2017) and in purple (April 2009). (B) 3-D representation of hypocenter distribution within the CSZ, enhancing the visualization of event clusters in depth and the geometry of the modeled fault planes. The information of rupture directivity is from Calderoni et al. (2017).]()
![(A) Geological map of the Campotosto area, central Italy, with (B) cross-sections A–A′ and B–B′ (located in Fig 6A) in the southern segment of the Monte Gorzano Fault (MGF) and (C) simplified stratigraphic columns of the hanging-wall (based on the interpretation of the well log) and footwall (based on field mapping) blocks. The location of the photos of Figure 6 (C, D) is also shown. Fm.—Formation; m a.s.l.—meters above sea level.]()
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![Geological sketch map of the Laga Basin, central Italy (Centamore et al., 1992, modified). The Monte Gorzano Fault (MGF) is in red, the Amatrice and Campotosto basins are in correspondence of the homonymous villages. The area represented in Figure 5 and the traces of the seismic profiles of Figure 8 are also shown.]()
![Different processes/stages of evolution of linkage between neighboring normal faults in relation to their geometry (modified after Gupta and Scholz, 2000). Fault 1 and Fault 3 display the geometrical relationship between the Paganica Fault (Fault 3) and the Monte Vettore Fault (Fault 1). The underlap region represents the Campotosto area, central Italy.]()
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![Map of the seismic sequences that took place in the last decades in central Italy. Focal mechanisms refer to the related mainshocks. Capable faults and modeled seismogenic faults are also shown (CF—Colfiorito Fault; MVF—Monte Vettore Fault; PF—Paganica Fault) (Tondi et al., 2009; Pantosti and Boncio, 2012, Pizzi et al., 2017; Chiarabba et al., 2018; Falcucci et al., 2018). The Campotosto area represented in Figure 3 is also shown.]()
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![3-D model of the seismogenic structures related to the 2009 L′Aquila seismic sequence (purple) and the 2016–2017 Amatrice-Visso-Norcia seismic sequence (red/brown) of central Italy. The model shows the difference in length between the capable faults at the surface and the related seismogenic sources at depth. This difference is consistent with the pronounced elliptical shape typical of normal faults (Torabi et al., 2019). The seismogenic sources of the main events (moment magnitude ≥ 5.0) that occurred in the underlap region between the two main faults outline a linkage zone beneath the Campotosto area.]()
![Interpreted seismic profiles (located in Fig 4) after Bigi et al. (2013) showing the Monte Gorzano Fault (MGF) offsetting the backlimb of the ramp anticline associated with the Acquasanta-Gorzano thrust, central Italy. According to the latter authors, the normal fault (bifurcating into two shallow splays in B) rejoins the thrust at depth. In (A) the hypocenter distribution, projected along strike (155°) onto the seismic section, shows the Campotosto Seismic Zone (CSZ) seismicity (falling in the 5–12 km depth range) to be completely unrelated with the overlying MGF. DP—data position; Fm.—Formation; Mw—moment magnitude; TWT—two-way travel time.]()
![(A) Map of distribution of earthquakes during 2016–2017 Central Italy seismic sequence (Tan et al., 2021). Stars highlight main-shock epicenters. Lines show traces of major regional faults. (B) Evolution of basement seismic rate (depth >9 km) during sequence (Eqs—earthquakes). Vertical lines mark occurrences of main shocks: A—Amatrice; V—Visso; N—Norcia; C—Campotosto. (C) Plan view at depth of 10 km showing Coulomb stress change (see SM1 [text footnote 1]) and aftershocks (from 10 to 11 km) of Norcia main shock within 30 days. Black rectangle is Norcia main shock fault box.]()
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1-20 OF 49 RESULTS FOR
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Journal Article
The Campotosto linkage fault zone between the 2009 and 2016 seismic sequences of central Italy: Implications for seismic hazard analysis Open Access
Journal: GSA Bulletin
Publisher: Geological Society of America
Published: 14 December 2020
GSA Bulletin (2021) 133 (7-8): 1679–1694.
... and Scholz, 2000 ). Fault 1 and Fault 3 display the geometrical relationship between the Paganica Fault (Fault 3) and the Monte Vettore Fault (Fault 1). The underlap region represents the Campotosto area, central Italy. The type of interaction between faults and the rate at which faults reactivate...
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Image
![(A) Map view of the Campotosto Seismic Zone (CSZ), central Italy, showing epicenter distribution (moment magnitude [Mw] ≥ 2.0) of seismic events that took place within five days after each of the main events. Modeled seismogenic faults are displayed with the related focal mechanisms (http://cnt.rm.ingv.it/en/tdmt; Scognamiglio et al., 2006). Events associated with the two distinct seismic sequences are shown in different tonality of brown depending on hypocentral depth (January 2017) and in purple (April 2009). (B) 3-D representation of hypocenter distribution within the CSZ, enhancing the visualization of event clusters in depth and the geometry of the modeled fault planes. The information of rupture directivity is from Calderoni et al. (2017).](https://gsw.silverchair-cdn.com/gsw/Content_public/Journal/gsabulletin/133/7-8/10.1130_B35788.1/3/s_b35788.1f3.png?Expires=2147483647&Signature=ISIctgT93eZ~KpTCjf3YZsL8vqlvwg9Dbi3TWIVAhQEUpujqXBWfS9VH3rxYzdwuWiqrPwLQXIrT6vYWWRRE6ykM1r3Y7C4GuXIHViKxkyMhDqQnbZN6JBmDOdRPRDPYBsMZW~Zy8jbkzSpwNL~QgwTyNgaxEYvSqe3xGzdykpN-UfazPH~9mfH2Uj932aBn9SuShjG9DJqZpe38Yo3hiFHDhmebIuXPVfh2b9hy0y2eN70M0zlmhv0QCcXxhKl~ejPEdnwcxs5FFcGsCgZ3kuXlrXwXbdOEutuzrnL~~BAYiVZCeq6N4cZwE9YzBWhw-XtITpV~O83VSpC2haVwyA__&Key-Pair-Id=APKAIE5G5CRDK6RD3PGA)
(A) Map view of the Campotosto Seismic Zone (CSZ), central Italy, showing e... Open Access
in The Campotosto linkage fault zone between the 2009 and 2016 seismic sequences of central Italy: Implications for seismic hazard analysis
> GSA Bulletin
Published: 14 December 2020
Figure 3. (A) Map view of the Campotosto Seismic Zone (CSZ), central Italy, showing epicenter distribution (moment magnitude [Mw] ≥ 2.0) of seismic events that took place within five days after each of the main events. Modeled seismogenic faults are displayed with the related focal mechanisms
Image
(A) Geological map of the Campotosto area, central Italy, with (B) cross-se... Open Access
in The Campotosto linkage fault zone between the 2009 and 2016 seismic sequences of central Italy: Implications for seismic hazard analysis
> GSA Bulletin
Published: 14 December 2020
Figure 5. (A) Geological map of the Campotosto area, central Italy, with (B) cross-sections A–A′ and B–B′ (located in Fig 6A ) in the southern segment of the Monte Gorzano Fault (MGF) and (C) simplified stratigraphic columns of the hanging-wall (based on the interpretation of the well log
Image
SUMMARY OF THE PARAMETERS USED TO MODEL THE SEISMOGENIC FAULT PLANES OF THE... Open Access
in The Campotosto linkage fault zone between the 2009 and 2016 seismic sequences of central Italy: Implications for seismic hazard analysis
> GSA Bulletin
Published: 14 December 2020
TABLE 1. SUMMARY OF THE PARAMETERS USED TO MODEL THE SEISMOGENIC FAULT PLANES OF THE SEVEN STUDIED MAIN EVENTS THAT OCCURRED IN THE CAMPOTOSTO SEISMIC ZONE, CENTRAL ITALY
Journal Article
Active Faulting in Source Region of 2016–2017 Central Italy Event Sequence Available to Purchase
Journal: Earthquake Spectra
Publisher: Earthquake Engineering Research Institute
Published: 01 November 2018
Earthquake Spectra (2018) 34 (4): 1557–1583.
... of Seismology 8 , 407 – 425 .
Boncio
P.
,
Lavecchia
G.
,
Milana
G.
, and
Rozzi
B.
, 2004 b. Improving the knowledge on the seismogenesis of the Amatrice-Campotosto area (Central Italy) through an integrated analysis...
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Journal Article
Kinematic Earthquake Ground‐Motion Simulations on Listric Normal Faults Available to Purchase
Publisher: Seismological Society of America
Published: 10 October 2017
Bulletin of the Seismological Society of America (2017) 107 (6): 2980–2993.
... hazard assessment for near‐fault areas for which observations are scarce, such as in the listric Campotosto fault (Italy) located in an active seismic area under a dam. An integral part of probabilistic seismic hazard assessment is the prediction of expected ground motions produced by potential seismic...
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Includes: Supplemental Content
Image
Geological sketch map of the Laga Basin, central Italy ( Centamore et al., ... Open Access
in The Campotosto linkage fault zone between the 2009 and 2016 seismic sequences of central Italy: Implications for seismic hazard analysis
> GSA Bulletin
Published: 14 December 2020
Figure 4. Geological sketch map of the Laga Basin, central Italy ( Centamore et al., 1992 , modified). The Monte Gorzano Fault (MGF) is in red, the Amatrice and Campotosto basins are in correspondence of the homonymous villages. The area represented in Figure 5 and the traces of the seismic
Image
Different processes/stages of evolution of linkage between neighboring norm... Open Access
in The Campotosto linkage fault zone between the 2009 and 2016 seismic sequences of central Italy: Implications for seismic hazard analysis
> GSA Bulletin
Published: 14 December 2020
1). The underlap region represents the Campotosto area, central Italy.
Journal Article
Machine‐Learning‐Based High‐Resolution Earthquake Catalog Reveals How Complex Fault Structures Were Activated during the 2016–2017 Central Italy Sequence Open Access
Journal: The Seismic Record
Publisher: Seismological Society of America
Published: 04 May 2021
The Seismic Record (2021) 1 (1): 11–19.
...Yen Joe Tan; Felix Waldhauser; William L. Ellsworth; Miao Zhang; Weiqiang Zhu; Maddalena Michele; Lauro Chiaraluce; Gregory C. Beroza; Margarita Segou Abstract The 2016–2017 central Italy seismic sequence occurred on an 80 km long normal‐fault system. The sequence initiated with the M w 6.0...
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Includes: Supplemental Content
Image
Map of the seismic sequences that took place in the last decades in central... Open Access
in The Campotosto linkage fault zone between the 2009 and 2016 seismic sequences of central Italy: Implications for seismic hazard analysis
> GSA Bulletin
Published: 14 December 2020
Figure 1. Map of the seismic sequences that took place in the last decades in central Italy. Focal mechanisms refer to the related mainshocks. Capable faults and modeled seismogenic faults are also shown (CF—Colfiorito Fault; MVF—Monte Vettore Fault; PF—Paganica Fault) ( Tondi et al., 2009
Journal Article
Temporal Variability of Ground Shaking and Stress Drop in Central Italy: A Hint for Fault Healing? Available to Purchase
Publisher: Seismological Society of America
Published: 03 July 2018
Bulletin of the Seismological Society of America (2018) 108 (4): 1853–1863.
... that occurred in central Italy from 2008 to 2017 to capture the temporal variability of the ground shaking at high frequency. We first compute between‐event residuals for each earthquake in the Fourier domain with respect to a GMPE developed ad hoc for the analyzed data set. The between‐events show large...
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Includes: Supplemental Content
Journal Article
The 2016 Central Italy Seismic Sequence: A First Look at the Mainshocks, Aftershocks, and Source Models Available to Purchase
Journal: Seismological Research Letters
Publisher: Seismological Society of America
Published: 29 March 2017
Seismological Research Letters (2017) 88 (3): 757–771.
...L. Chiaraluce; R. Di Stefano; E. Tinti; L. Scognamiglio; M. Michele; E. Casarotti; M. Cattaneo; P. De Gori; C. Chiarabba; G. Monachesi; A. Lombardi; L. Valoroso; D. Latorre; S. Marzorati ABSTRACT The 2016 central Italy seismic sequence consists so far of a series of moderate‐to‐large earthquakes...
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Includes: Supplemental Content
Image
3-D model of the seismogenic structures related to the 2009 L′Aquila seismi... Open Access
in The Campotosto linkage fault zone between the 2009 and 2016 seismic sequences of central Italy: Implications for seismic hazard analysis
> GSA Bulletin
Published: 14 December 2020
Figure 8. 3-D model of the seismogenic structures related to the 2009 L′Aquila seismic sequence (purple) and the 2016–2017 Amatrice-Visso-Norcia seismic sequence (red/brown) of central Italy. The model shows the difference in length between the capable faults at the surface and the related
Image
Interpreted seismic profiles (located in Fig 4 ) after Bigi et al. (2013)... Open Access
in The Campotosto linkage fault zone between the 2009 and 2016 seismic sequences of central Italy: Implications for seismic hazard analysis
> GSA Bulletin
Published: 14 December 2020
Figure 9. Interpreted seismic profiles (located in Fig 4 ) after Bigi et al. (2013) showing the Monte Gorzano Fault (MGF) offsetting the backlimb of the ramp anticline associated with the Acquasanta-Gorzano thrust, central Italy. According to the latter authors, the normal fault (bifurcating
Image
![(A) Map of distribution of earthquakes during 2016–2017 Central Italy seismic sequence (Tan et al., 2021). Stars highlight main-shock epicenters. Lines show traces of major regional faults. (B) Evolution of basement seismic rate (depth >9 km) during sequence (Eqs—earthquakes). Vertical lines mark occurrences of main shocks: A—Amatrice; V—Visso; N—Norcia; C—Campotosto. (C) Plan view at depth of 10 km showing Coulomb stress change (see SM1 [text footnote 1]) and aftershocks (from 10 to 11 km) of Norcia main shock within 30 days. Black rectangle is Norcia main shock fault box.](https://gsw.silverchair-cdn.com/gsw/Content_public/Journal/geology/51/10/10.1130_G51432.1/3/s_g51432.1_f01.png?Expires=2147483647&Signature=YMRu1icX6Yte8O50qixE2a5BteJoKVdUsIeFmoGerfbwYmTfqUCeYtR-SSURpLY8FrJrnixvftWzhK0ULvlzJnJXRkfQZFS0ABhZ6PgE2pW4dDp-wxvcwWnVAdXnxq1-gGqe7VM6PpE5KP5biI8whYdqFdTdBH66ojxhRo9pp5tcOZ65DB7nUuPqrg3OLQJXipA9ijNZO2y1Q8Kf7QQJSamdnwszzSBIHkeKOxQAOalQZUUzloSnqesN9f~GZIIH5Kg1A3-mhUP7fvpG5~sV5XWNrmO6juIaFxEyvEP3YfU6F-dqMPKKRiGSYOcyXbMkOLtuaSH1tO9TTa4LO05xUQ__&Key-Pair-Id=APKAIE5G5CRDK6RD3PGA)
(A) Map of distribution of earthquakes during 2016–2017 Central Italy seism... Open Access
Published: 14 August 2023
Figure 1. (A) Map of distribution of earthquakes during 2016–2017 Central Italy seismic sequence ( Tan et al., 2021 ). Stars highlight main-shock epicenters. Lines show traces of major regional faults. (B) Evolution of basement seismic rate (depth >9 km) during sequence (Eqs—earthquakes
Journal Article
Rheological heterogeneities at the roots of the seismogenic zone Open Access
Journal: Geology
Publisher: Geological Society of America
Published: 14 August 2023
Geology (2023) 51 (10): 988–992.
...Figure 1. (A) Map of distribution of earthquakes during 2016–2017 Central Italy seismic sequence ( Tan et al., 2021 ). Stars highlight main-shock epicenters. Lines show traces of major regional faults. (B) Evolution of basement seismic rate (depth >9 km) during sequence (Eqs—earthquakes...
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Journal Article
Interactions of Earthquakes in Central Italy over the Past 100 Yr through Coulomb Stress Changes, and Implications for Seismic Hazards Available to Purchase
Publisher: Seismological Society of America
Published: 14 January 2020
Bulletin of the Seismological Society of America (2020) 110 (1): 178–190.
...Bin Shan; Yashan Feng; Chengli Liu; Xiong Xiong ABSTRACT Italy has a historical earthquake record that is complete for events with a magnitude above 5.8 since A.D. 1349, making it possible to study Coulomb failure stress changes ( Δ CFS ) over a long period. In this study, we investigated...
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Journal Article
Do Graviquakes Exist? Open Access
Publisher: Seismological Society of America
Published: 05 June 2025
Bulletin of the Seismological Society of America (2025)
... in the M range of 5.3–5.5 in the Campotosto Lake‐Capitignano area, about 10–15 km southeast of Amatrice. The sequence, and specifically the 30 October shock, gave Doglioni and coworkers a convenient and very well‐recorded case for testing the Graviquake model. DInSAR observations supplied...
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Early Publication
Includes: Supplemental Content
Journal Article
Earthquakes and fault zone structure Available to Purchase
Journal: Geology
Publisher: Geological Society of America
Published: 01 April 2014
Geology (2014) 42 (4): 343–346.
... , v. 124 , p. 79 – 106 , doi:10.1007/BF00875720 . Chiaraluce L. , 2012 , Unravelling the complexity of Apenninic extensional fault systems: A review of the 2009 L’Aquila earthquake (Central Apennines, Italy) : Journal of Structural Geology , v. 42 , p. 2 – 18 , doi:10.1016/j.jsg...
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Journal Article
Effect of Time Dependence on Probabilistic Seismic-Hazard Maps and Deaggregation for the Central Apennines, Italy Available to Purchase
Publisher: Seismological Society of America
Published: 01 April 2009
Bulletin of the Seismological Society of America (2009) 99 (2A): 585–610.
...A. Akinci; F. Galadini; D. Pantosti; M. Petersen; L. Malagnini; D. Perkins Abstract We produce probabilistic seismic-hazard assessments for the central Apennines, Italy, using time-dependent models that are characterized using a Brownian passage time recurrence model. Using aperiodicity parameters...
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