2016
DOI: 10.1002/2015jf003732
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A seismologically consistent expression for the total area and volume of earthquake‐triggered landsliding

Abstract: We present a new, seismologically consistent expression for the total area and volume of populations of earthquake-triggered landslides. This model builds on a set of scaling relationships between key parameters, such as landslide spatial density, seismic ground acceleration, fault length, earthquake source depth, and seismic moment. To assess the model we have assembled and normalized a catalog of landslide inventories for 40 shallow, continental earthquakes. Low landscape steepness causes systematic overpred… Show more

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Cited by 120 publications
(220 citation statements)
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“…Below this threshold, landsliding is rare or minor, and therefore a reasonable estimation of the size and shape of the landslide distribution area could be found by intersecting the region where the peak ground acceleration exceeds a c and the region with sufficiently steep topography for landsliding to occur. Marc et al (2016b) have successfully modelled the total volume and area of the population of landslides due to a given earthquake, using seismological scaling laws to constrain the magnitude and extent of ground shaking. They assumed that a c is a threshold acceleration for damage above which an effective reduction of strength occurred within the hillslope materials, increasing the likelihood of failure of slopes steeper than the angle of internal friction and thus stable due to a significant cohesion.…”
Section: A Seismologically Consistent Expression For the Landslide DImentioning
confidence: 99%
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“…Below this threshold, landsliding is rare or minor, and therefore a reasonable estimation of the size and shape of the landslide distribution area could be found by intersecting the region where the peak ground acceleration exceeds a c and the region with sufficiently steep topography for landsliding to occur. Marc et al (2016b) have successfully modelled the total volume and area of the population of landslides due to a given earthquake, using seismological scaling laws to constrain the magnitude and extent of ground shaking. They assumed that a c is a threshold acceleration for damage above which an effective reduction of strength occurred within the hillslope materials, increasing the likelihood of failure of slopes steeper than the angle of internal friction and thus stable due to a significant cohesion.…”
Section: A Seismologically Consistent Expression For the Landslide DImentioning
confidence: 99%
“…The mean depth of emission is assumed to be the mean asperity depth because asperities emit most of the high-frequency waves (Ruiz et al, 2011;Avouac et al, 2015) and seem to explain best the observed patterns and amounts of landsliding (Meunier et al, 2013b;Marc et al, 2016b). Note that waves with frequencies of 0.5 to 10 Hz are often the most important for landslide triggering because they have wavelengths ranging from the landslide size to the hillslope size (Marc et al, 2016b).…”
Section: A Seismologically Consistent Expression For the Landslide DImentioning
confidence: 99%
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“…Within 48 h of the 25 April mainshock, initial estimates of the likely geographical distribution of landslides were based upon the outputs of the USGS ShakeMap and a limited number of reports from the ground (e.g., via social media). Although this provided a first-order approximation of potential landslide locations, coseismic landsliding is determined by the interactions between topography, ground shaking, and local site geology (Meunier et al, 2008;Parker et al, 2015;Marc et al, 2016). Empirical landslide susceptibility models (Gallen et al, 2016;Parker et al, 2017;Robinson et al, 2017) provided probabilistic estimates of the likelihood of a landslide at any point in space within the affected area.…”
Section: Chronology Of Rapid Landslide Assessment Using Optical Imagerymentioning
confidence: 99%