Dendrogeomorphology of landslides: principles, results and perspectives

Modern reactivations of a thick colluvial landslide reconstructed from dendrochronology: the example of the Xiakou landslide, China

“…This study did not consider identifying landslide reactivation signals from tree ring eccentricity (Braam, Weiss, & Burrough, 1987; Šilhán, 2019; Šilhán et al, 2014; Wistuba, Malik, Gärtner, Kojs, & Owczarek, 2013). Although the relationship between RW and tree ring eccentricity is non‐linear, eccentric growth can often be found associated with the formation of RW (Šilhán, 2019, 2020a; Šilhán et al, 2016; Šilhán & Stoffel, 2015). These landslide signals captured by tree‐ring eccentricity may be different from those detected by RW (Šilhán, 2020a; Šilhán et al, 2016; Šilhán & Stoffel, 2015).…”

“…Although the relationship between RW and tree ring eccentricity is non‐linear, eccentric growth can often be found associated with the formation of RW (Šilhán, 2019, 2020a; Šilhán et al, 2016; Šilhán & Stoffel, 2015). These landslide signals captured by tree‐ring eccentricity may be different from those detected by RW (Šilhán, 2020a; Šilhán et al, 2016; Šilhán & Stoffel, 2015). Modern GDs may be connected with creeping as the aftermath of large landslides, while tree ring eccentricity can be prevalent in older trees with the formation of RW (Šilhán & Stoffel, 2015).…”

“…Modern GDs may be connected with creeping as the aftermath of large landslides, while tree ring eccentricity can be prevalent in older trees with the formation of RW (Šilhán & Stoffel, 2015). In addition, it appears that eccentric growth may be more sensitive to slight surface displacement than RW (Šilhán, 2020a; Wistuba, Malik, & Krąpiec, 2018). However, tree‐ring eccentricity may also be affected by other factors, including steep slope, wind, snow, and crown asymmetry (Šilhán, 2019).…”

“…Dendrochronology is a practical tool for the interpretation of long‐term geomorphic processes and mass movements as responses to environmental changes (Alestalo, 1971; Shroder, 1978; Šilhán, 2020a). Dendrochronological methods may reach moderate‐to‐high agreements with in‐situ monitoring data (Šilhán, Prokešová, Medveďová, & Tichavský, 2016; Tichavský, Jiránková, & Fabiánová, 2020).…”

The Preservation of Climate‐Driven Landslide Dams in Western Oregon

“…We note, however, that Bayesian constraint of 14 C ages using "wiggle matching," which utilizes either tree rings or stratigraphy to constrain the sample age probability density function (PDFs), is an enhanced 14 C dating technique that can provide comparatively robust ages (e.g., Hogg et al, 2019;Ramsey, 2009;Scharer et al, 2011;Streig et al, 2020;Struble et al, 2020). When possible, dendrochronology, or tree ring analysis, provides the only known tool to explicitly link the timing of slope failure with individual triggering events (e.g., Pringle, 2014;Struble et al, 2020;Šilhán, 2020). Although this approach is limited by the timescale of existing tree ring records, the Pacific Northwest is well-suited due to the longevity of trees and their relative abundance in the landscape.…”