Map and model input and output data for the north Charlotte Creek Basin, Douglas County, Oregon, for analysis of debris-flow initiation resulting from the storm of November 17 - 19, 1996

Heavy rainfall during mid-November 1996 induced debris flows throughout the southern Oregon Coast Range, including more than 150 in the immediate vicinity of north Charlotte Creek (Coe and others, 2011). Data in this project pertain to a 2.4-km2 area centered at N 43.65° and W 123.94° which an area where high concentrations of debris flows occurred. These data include a subset of a map of landslide and debris flow polygons (Coe and others, 2011) and raster grids derived from a lidar dataset acquired in 2008 – 2009 (https://gis.dogami.oregon.gov/maps/lidarviewer/). The project area covers a tributary basin west of Charlotte Creek, southwest of the Umpqua River, and is in the southern part of the Deer Head Point 7.5-minute quadrangle. These data were used to test an implementation of the Transient Rainfall Infiltration and Grid-Based Regional Slope-Stability Model (TRIGRS, see Baum and others, 2011) for the timing and distribution of rainfall-induced shallow landslides, a simplified three-dimensional slope stability analysis method (Baum and others, 2012), and for testing soil depth models (Baum, 2017).

1996年11月中旬的强降雨在俄勒冈州海岸山脉南部引发了多起碎屑流，其中北夏洛特溪紧邻区域就发生了超过150起（Coe等，2011）。本项目所用数据的研究区域为一块面积2.4平方千米的区域，中心点坐标为北纬43.65°、西经123.94°，该区域正是碎屑流高发地带。这些数据包含了滑坡与碎屑流多边形地图（Coe等，2011）的子集，以及由2008-2009年获取的激光雷达（lidar）数据集生成的栅格网格，相关激光雷达数据可通过https://gis.dogami.oregon.gov/maps/lidarviewer/查询获取。该项目区域位于夏洛特溪西侧的支流流域，地处乌姆普夸河西南侧，且处于鹿头点（Deer Head Point）7.5分钟地形图幅的南部区域。本数据集被用于验证瞬态降雨入渗与基于栅格的区域边坡稳定性模型（Transient Rainfall Infiltration and Grid-Based Regional Slope-Stability Model, TRIGRS，参见Baum等，2011）在降雨诱发浅层滑坡的时间与分布规律方面的实现效果，同时也用于验证一种简化的三维边坡稳定性分析方法（Baum等，2012），并对土壤深度模型（Baum，2017）开展测试。