Richard M. Iverson 2018 <div class="NLM_sec NLM_sec_level_1"><p>The original paper discusses factors that may have contributed to the occurrence and long runout of a disastrous landslide near the community of Oso, Washington, on March 22, 2014. The paper reinforces a prior finding that the long runout likely resulted from liquefaction of wet colluvium that was rapidly loaded by landslide debris impinging from upslope (<a class="ref showRefEvent" href="https://ascelibrary.org/doi/10.1061/%28ASCE%29GT.1943-5606.0001917#" data-rid="c10" data-mce-href="https://ascelibrary.org/doi/10.1061/%28ASCE%29GT.1943-5606.0001917">Iverson et&nbsp;al. 2015</a>). However, the original paper proposes a landslide geometry and chronology that differ from those presented in previous reports, and these differences have implications for interpreting the landslide’s mechanics. The paper also includes factual errors as well as misrepresentations that result from selective inclusion and exclusion of findings previously reported by others. The purposes of this discussion are to place the original paper in context and to rectify some of its mistakes.</p></div> application/pdf 10.1061/(ASCE)GT.1943-5606.0001917 en American Society of Civil Engineers Discussion of “Case study: Oso, Washington, landslide of March 22, 2014-Material properties and failure mechanism” by Timothy D. Stark, Ahmed K. Baghdady, Oldrich Hungr, and Jordan Aaron article