Self-similarity of the largest-scale segmentation of the faults: Implications for earthquake behavior

Manighetti, Isabelle; Zigone, Dimitri; Campillo, Míchel; Cotton, Fabrice

doi:10.1016/j.epsl.2009.09.040

Cited by 71 publications

(104 citation statements)

References 54 publications

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“…(e.g., Manighetti et al, 2001aManighetti et al, , 2009Manighetti et al, , 2015Martel and Shacat, 2006;Muraoka and Kamata, 1983;Nicol et al, 2005;Peacock and Sanderson, 1996;Scholz and Lawler, 2004;Soliva and Benedicto, 2004, for normal faults;e.g., Bü rgmann et al, 1994;Farbod et al, 2011;McGrath and Davison, 1995;Pachell and Evans, 2002;Peacock, 1991, for strike-slip faults; e.g., Davis et al, 2005;Ellis and Dunlap, 1988;Shaw et al, 2002, for reverse faults). Furthermore, the displacement-length profiles have been shown to taper in the direction of long-term fault propagation (e.g., Davis et al, 2005;Manighetti et al, 2001a).…”

Section: Discussionmentioning

confidence: 99%

Off-fault tip splay networks: A genetic and generic property of faults indicative of their long-term propagation

Perrin

Manighetti

Gaudemer

2015

Comptes Rendus. Géoscience

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Section: Discussionmentioning

confidence: 99%

Off-fault tip splay networks: A genetic and generic property of faults indicative of their long-term propagation

Perrin

Manighetti

Gaudemer

2015

Comptes Rendus. Géoscience

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“…Most Fucino faults have a cumulative slip versus length profile that is asymmetric and roughly triangular in overall shape (Figure c). These specific slip distributions have been shown to typify faults that are both active and propagating laterally in the direction of slip decrease [ Manighetti et al ., , , ; Schlagenhauf et al ., 2008]. We infer that the VMF [ Schlagenhauf et al ., , Figure ], SB, and PA faults are propagating northward (over multiple seismic cycles, see discussion in Manighetti et al ., ], while the FI and CF faults are propagating southward.…”

Section: Seismotectonics Of the Lazio‐abruzzo And Fucino Fault Systemsmentioning

confidence: 99%

Earthquake synchrony and clustering on Fucino faults (Central Italy) as revealed from in situ³⁶Cl exposure dating

et al. 2013

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[1] We recover the Holocene earthquake history of seven seismogenic normal faults in the Fucino system, central Italy. We collected 800 samples from the well-preserved limestone scarps of the faults and modeled their 36 Cl concentrations to derive their seismic exhumation history. We found that > 30 large earthquakes broke the faults in synchrony over the last 12 ka. The seven faults released strain at the same periods of time, 12-9 ka, 5-3 ka, and 1.5-1 ka. On all faults, the strain accumulation and release occurred in 3-6 ka supercycles, each included a 3-5 ka phase of slow (≤ 0.5-2 mm/yr) strain accumulation in relative quiescence, followed by a cluster of three to four large earthquakes or earthquake sequences that released most of the strain in < 1-2 ka. The large earthquakes repeated every 0.5 ± 0.3 ka during the paroxysmal phases and every 4.3 ± 0.9 ka between those phases. Earthquakes on the northern faults produced twice larger surface slips (~2 m) and had larger magnitudes (Mw 6.2-6.7) than those on the southern faults. On most faults, the relative strain level was found to control the amount of slip and the time of occurrence of the next large earthquake. Faults entered a phase of clustered activity once they had reached a specific relative strain threshold. The Tre Monti fault is identified as the most prone to break over the next century. Our data document earthquake synchrony and clustering at a broader space and time scale than has been reported to date.

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“…If variable cumulative displacement is typical of Quaternary faults, then either (1) slip rate uncertainties should include the contribution due to this variability, particularly for small data sets, or (2) faults should be subdivided into smaller sections with different, but more precise, slip rates. Such subdivisions could suggest that several geologically or seismologically distinct segments make up the larger fault (DuRoss et al, ; Manighetti et al, ). Unfortunately, cumulative displacement is rarely quantifiable along strike, especially for thrust faults, making this task impractical in situations where slip rate information is nonetheless important.…”

Section: Introductionmentioning

confidence: 99%

Quantifying Uncertainty in Cumulative Surface Slip Along the Cucamonga Fault, a Crustal Thrust Fault in Southern California

McPhillips

Scharer

2018

JGR Solid Earth

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Studies of historic earthquake ground surface ruptures show that displacements along strike are spatially variable. As a result, latest Quaternary slip rates developed from a spatially restricted set of cumulative displacement measurements may not accurately represent fault velocity. Here we examine the uncertainties associated with slip on the Cucamonga Fault, which is part of a network of faults that have generated damaging historical earthquakes in and around Los Angeles, California. Numerous scarps along its ~25‐km length are well expressed on alluvial fans. We make 310 measurements of vertical separation across the scarps using lidar data. We show that the dispersion of the vertical separations cannot be explained by our best estimates of analytical uncertainties alone. Additional epistemic uncertainties are required. We find that the magnitude of the required epistemic uncertainty is typically larger than analytical uncertainty by a factor of 3 and typically about 22% of the maximum vertical separation. These relationships appear to hold at several spatial scales. We examine three potential sources of epistemic uncertainty and find that none among surface age uncertainty, fault dip, and anthropogenic landscape alteration is likely sufficient to explain the overdispersion of the data, which suggests differences in cumulative strain along the strike of the fault. We calculate a range of dip‐slip rates between 0.4 and 2.6 mm/year. In light of our results, we suggest that future thrust‐fault slip‐rate studies adopt an epistemic uncertainty of 22% of the maximum value for vertical separation measurements, unless there are sufficient data to demonstrate otherwise.

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Self-similarity of the largest-scale segmentation of the faults: Implications for earthquake behavior

Cited by 71 publications

References 54 publications

Off-fault tip splay networks: A genetic and generic property of faults indicative of their long-term propagation

Off-fault tip splay networks: A genetic and generic property of faults indicative of their long-term propagation

Earthquake synchrony and clustering on Fucino faults (Central Italy) as revealed from in situ³⁶Cl exposure dating

Quantifying Uncertainty in Cumulative Surface Slip Along the Cucamonga Fault, a Crustal Thrust Fault in Southern California

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Self-similarity of the largest-scale segmentation of the faults: Implications for earthquake behavior

Cited by 71 publications

References 54 publications

Off-fault tip splay networks: A genetic and generic property of faults indicative of their long-term propagation

Off-fault tip splay networks: A genetic and generic property of faults indicative of their long-term propagation

Earthquake synchrony and clustering on Fucino faults (Central Italy) as revealed from in situ36Cl exposure dating

Quantifying Uncertainty in Cumulative Surface Slip Along the Cucamonga Fault, a Crustal Thrust Fault in Southern California

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Earthquake synchrony and clustering on Fucino faults (Central Italy) as revealed from in situ³⁶Cl exposure dating