A seismologically consistent expression for the total area and volume of earthquake-triggered landsliding

Odin Marc*, Niels Hovius, Patrick Meunier, Tolga Gorum, Taro Uchida

*Bu çalışma için yazışmadan sorumlu yazar

Araştırma sonucu: ???type-name???Makalebilirkişi

103 Atıf (Scopus)

Özet

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 overprediction of the total area and volume of landslides. When this effect is accounted for, the model predicts the total landslide volume of 63% of 40 cases to within a factor 2 of the volume estimated from observations (R2=0.76). The prediction of total landslide area is also sensitive to the landscape steepness, but less so than the total volume, and it appears to be sensitive to controls on the landslide size-frequency distribution, and possibly the shaking duration. Some outliers are likely associated with exceptionally strong rock mass in the epicentral area, while others may be related to seismic source complexities ignored by the model. However, the close match between prediction and estimate for about two thirds of cases in our database suggests that rock mass strength is similar in many cases and that our simple seismic model is often adequate, despite the variety of lithologies and tectonic settings covered. This makes our expression suitable for integration into landscape evolution models and application to the anticipation or rapid assessment of secondary hazards associated with earthquakes.

Orijinal dilİngilizce
Sayfa (başlangıç-bitiş)640-663
Sayfa sayısı24
DergiJournal of Geophysical Research: Earth Surface
Hacim121
Basın numarası4
DOI'lar
Yayın durumuYayınlandı - 1 Nis 2016
Harici olarak yayınlandıEvet

Bibliyografik not

Publisher Copyright:
©2016. American Geophysical Union. All Rights Reserved.

Parmak izi

A seismologically consistent expression for the total area and volume of earthquake-triggered landsliding' araştırma başlıklarına git. Birlikte benzersiz bir parmak izi oluştururlar.

Alıntı Yap