TY - DATA T1 - Supplementary information files for "Comparing threshold definition techniques for rainfall-induced landslides: A national assessment using radar rainfall" PY - 2018/01/31 AU - Ben Postance AU - John Hillier AU - Tom Dijkstra AU - Neil Dixon UR - https://repository.lboro.ac.uk/articles/dataset/Supplementary_information_files_for_Comparing_threshold_definition_techniques_for_rainfall-induced_landslides_A_national_assessment_using_radar_rainfall_/5841273 DO - 10.17028/rd.lboro.5841273.v1 L4 - https://ndownloader.figshare.com/files/10350243 L4 - https://ndownloader.figshare.com/files/10350246 KW - landslides KW - rainfall KW - thresholds KW - early warning KW - debris flow KW - Environmental Monitoring N2 - Supplementary information files for "Comparing threshold definition techniques for rainfall-induced landslides: A national assessment using radar rainfall"AbstractTranslational landslides and debris flows are often initiated during intense or prolonged rainfall. Empirical thresholds aim to classify the rain conditions that are commonly associated with landslide occurrence and therefore improve understating of these hazards and predictive ability. Objective techniques that are used to determine these thresholds are likely to be affected by the length of the rain record used, yet this is not routinely considered. Moreover, remotely sensed spatially continuous rainfall observations are under-exploited. This study compares and evaluates the effect of rain record length on two objective threshold selection techniques in a national assessment of Scotland using weather radar data. Thresholds selected by ‘threat score’ are sensitive to rain record length whereas, in a first application to landslides, ‘optimal point’ (OP) thresholds prove relatively consistent. OP thresholds increase landslide detection and may therefore be applicable in early-warning systems. Thresholds combining 1- and 12-day antecedence variables best distinguish landslide initiation conditions and indicate that Scottish landslides may be initiated by lower rain accumulation and intensities than previously thought. ER -