Experimental alluvial-river and landsliding response to base-level fall

Experimental alluvial-river and landsliding response to base-level fall
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冲积河和滑坡对基准面下降的实验响应

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发表时间:
2020
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通讯作者:
Stefanie Tofelde
Stefanie Tofelde
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作者:
Olivia P. Beaulieu;A. Wickert;Elizabeth D. Witte;Stefanie Tofelde

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所有具有时间相关数据的文件都包含7位数的时间戳,提供自每次实验开始以来的秒数。 (1)在磁带ARchive(tar)中以GeoTIFF格式的地理参考鸟瞰照片。 (2)GZipped Tape Archive(tar.gz)中GeoTIFF格式的数字高程模型。 (3)滑坡GIS矢量区域(多边形)按实验和时间组织为存储在GZipped Tape Archive(tar.gz)中的ESRI Shapefile。每个子文件夹都被标记为.shx(“.shx”是伪造的),并包含与实验中每个时间的每组滑坡相关的shp、shx、dbf和prj文件。 (4)滑坡属性作为每个实验的逗号分隔变量(csv)文件,存储在XZippedTape ARchive(tar.xz)中。每个CSV包括(按顺序):滑坡中心的x和y位置,宽度(y方向-即,横谷-从一端到另一端的距离)和长度(x方向-即,滑坡的下谷-从一端到另一端的距离),平均滑坡深度,在x-y中测量的滑坡面积(即,水平)平面,与滑坡拟合的椭圆的半长轴和半短轴,半长轴与“水平”的角度(令人困惑的是x方向,因为我在写分析代码时是在x-y空间中思考的),滑坡区DEM表面高程减去谷底高程计算的滑坡体积,滑坡发生的运行时间,以及滑坡事件之间的等待时间。 (5)以15 fps(每1秒观看时间5分钟实验时间)的速度播放来自每个实验的完整系列图像的电影,存储在XZipped Tape Archive(tar.xz)中。我没有调整偶尔跳过的图像(例如,大约在激光扫描的时间),这将导致与5分钟运行时间到1秒视频转换的微小偏差。 (6)地理参考鸟瞰照片(ImgSec_0043168)的示意图(png)位于阴影地形图(DEM_fullectent_0043188)上,带有0043168之后运行时的阴影滑坡位置。沿着x轴的阴影显示了靠近出口的区域,在该区域,水槽壁阻止了成角度的激光地形扫描仪将光投射到谷底。所有图像均来自25 mm/hr基准面坠落实验。
All files with time-dependent data contain 7-digit time stamps that provide the number of seconds since the start of each experiment. (1) Georeferenced overhead photos in GeoTIFF format within a Tape ARchive (tar). (2) Digital elevation models in GeoTIFF format within a GZipped Tape ARchive (tar.gz). (3) Landslide GIS vector areas (polygons) organized by experiment and time as ESRI Shapefiles stored within a GZipped Tape ARchive (tar.gz). Each subfolder is labeled .shx (the ".shx" is spurious) and contains the shp, shx, dbf, and prj files associated with each set of landslides at each time in the experiment. (4) Landslide attributes as comma-separated variables (csv) files for each experiments, stored within an XZipped Tape ARchive (tar.xz). Each CSV includes (in order): the x and y positions of the landslide center, the width (y-directed – i.e., cross-valley – distance from one end to the other) and length (x-directed – i.e., down-valley – distance from one end to the other) of the landslide, mean landslide depth, landslide area measured in the x-y (i.e., horizontal) plane, the semi-major and semi-minor axes of an ellipse fit to the landslide, the angle from the semi-major axis to the "horizontal" (confusingly meaning the x orientation, since I was thinking in x-y space while writing the analysis code), landslide volume calculated by subtracting the valley-bottom elevation from that of the DEM surface in the landslide area, the runtime at which the landslide occurs, and the wait time between landslide events. (5) Movies at 15 fps (5 minutes experiment time per 1 second watch time) for the full series of images from each experiment, stored within an XZipped Tape ARchive (tar.xz). I did not adjust for occasional skipped images (e.g., around the time of the laser scans), which will cause minor deviations from the 5-minutes-runtime-to-1-second-video conversion. (6) Schematic image (png) of a georeferenced overhead photo (ImgSec_0043168) atop a shaded-relief map (DEM_fullextent_0043188) with hatched landslide locations from runtimes after 0043168. Shadows running along the x axis show zones near the outlet where the basin walls prevented the angled laser-topography scanner from casting light on the the valley bottom. All images are from the 25 mm/hr base-level fall experiment.