Quantifying the erasure of earthquake surface ruptures from desert landscapes: Implications for seismic hazard assessment
收藏资源简介：
Original Landscapes DEMs of ~120x140m landscapes clipped from: R1-10 = 2019 M7.1 Ridgecrest earthquake, 2019 lidar (Hudnut et al., 2020), and E1-10 = 2010 M7.2 El Mayor-Cucapah earthquake, 2010 lidar (OpenTopography, 2010). Example: "E5.asc" Degraded Landscapes Linearly diffused using Landlab (Hobley et al., 2017; Barnhart et al., 2020) at timesteps (100, 1000, 5000, 10000 yr) using a k of 1 m^2/kyr. Example: "e5_1000_001_eroded.asc" Mapped Faults Shapefiles - E1_10_shps & R1_10_shps Faults mapped on each degraded landscape using a systematic mapping process (Scott et al., 2023; Adam, 2023) Ridgecrest DEM - rc_7_1_0424_utm.tif 0.014 m/pix DEM of a portion of the 2019 M7.1 Ridgecrest earthquake rupture, from 6 April 2024. Created from Structure from Motion using drone images. Degradation and analysis python code - landscape_evolution_earthquake_ruptures-main.zip A set of scripts to simulate the effect of surface processes on surface ruptures and quantify the information loss associated with landscape evolution over time. Includes options to simulate surface processes with linear and non-linear diffusion, implemented using open-access code landlab. References Adam, R. (2023). Evaluation of remote mapping of active fault traces. Arizona State University. Barnhart, K.R., Hutton, E.W.H., Tucker, G.E., Gasparini, NM., Istanbulluoglu, E., Hobley, D.E.J., Lyons, N.J., Mouchene, M., Nudurupati, S.S., Adams, J.M., Bandarogoda, C., 2020, Short communication: Landlab v2.0: A software package for Earth surface dynamics: Earth Surface Dynamics Discussions, doi: 10.5194/esurf-2020-12. Hobley, D.E.J., Adams, J.M., Nudurupati, S.S., Hutton, E.W.H. Gasparini, N.M., Istanbulluoglu, E., and Tucker, G.E., 2017, Creative computing with Landlab: an open-source toolkit for building, coupling, and exploring two-dimensional numerical models of Earth-surface dynamics: Earth Surface Dynamics, v. 5, n. 1, p. 21-46, doi: 10.5194/esurf-5-21-2017. Hudnut, K.W., B. Brooks, K. Scharer, J.L. Hernandez, T.E. Dawson, M.E. Oskin, R. Arrowsmith, C.A. Goulet, K. Blake, M.L. Boggs, S. Bork, C.L. Glennie, J.C. Fernandez-Diaz, A. Singhania, D. Hauser, S. Sorhus (2020). 2019 Ridgecrest, CA Post-Earthquake Lidar Collection. National Center for Airborne Laser Mapping (NCALM). Distributed by OpenTopography. https://doi.org/10.5069/G9W0942Z.. Accessed: 2024-11-25 Opentopography; El Mayor-Cucapah Earthquake (4 April 2010) Rupture LiDAR Scan. Distributed by OpenTopography. https://doi.org/10.5069/G9TD9V7D . Accessed: 2024-11-25 Scott, C., Adam, R., Arrowsmith, R., Madugo, C., Powell, J., Ford, J., Gray, B., Koehler, R., Thompson, S., Sarmiento, A., Dawson, T., Kottke, A., Young, E., Williams, A., Kozaci, O., Oskin, M., Burgette, R., Streig, A., Seitz, G., … Ingersoll, S. (2023). Evaluating how well active fault mapping predicts earthquake surface-rupture locations. Geosphere. https://doi.org/10.1130/GES02611.1
### 原始地貌数据集 本数据集包含约120×140米分辨率的地貌数字高程模型（Digital Elevation Model, DEM），裁剪自以下两类数据源： R1-10：2019年M7.1级里奇克莱斯特地震区域的2019年激光雷达（Light Detection and Ranging, LiDAR）数据（Hudnut et al., 2020）； E1-10：2010年M7.2级埃尔马约-库卡帕地震区域的2010年激光雷达数据（OpenTopography, 2010）。 示例文件名："E5.asc" ### 退化地貌数据集 通过Landlab工具包（Hobley et al., 2017; Barnhart et al., 2020）对原始地貌进行线性扩散模拟，模拟时间步长设为100、1000、5000、10000年，扩散系数k取值为1 m²/kyr。 示例文件名："e5_1000_001_eroded.asc" ### 映射断层形状文件（Shapefiles）——E1_10_shps与R1_10_shps 基于系统性断层制图流程（Scott et al., 2023; Adam, 2023），在每一处退化地貌上识别并绘制了地表断层，对应数据存储于上述两个形状文件包中。 ### 里奇克莱斯特DEM数据——rc_7_1_0424_utm.tif 该数据为2024年4月6日获取的2019年M7.1级里奇克莱斯特地震破裂带部分区域的DEM，空间分辨率为0.014米每像素，通过无人机影像的运动恢复结构（Structure from Motion, SfM）技术生成。 ### 地貌退化与分析Python代码——landscape_evolution_earthquake_ruptures-main.zip 本代码包包含一系列脚本，用于模拟地表过程对地震地表破裂的改造作用，并量化地貌随时间演化带来的信息损失。脚本支持线性与非线性扩散的地表过程模拟，基于开源工具Landlab实现。 ### 参考文献 1. Adam, R. (2023). 主动断层迹线遥感制图评估. 亚利桑那州立大学. 2. Barnhart, K.R., Hutton, E.W.H., Tucker, G.E., Gasparini, NM., Istanbulluoglu, E., Hobley, D.E.J., Lyons, N.J., Mouchene, M., Nudurupati, S.S., Adams, J.M., Bandarogoda, C., 2020, Short communication: Landlab v2.0: A software package for Earth surface dynamics: Earth Surface Dynamics Discussions, doi: 10.5194/esurf-2020-12. 3. Hobley, D.E.J., Adams, J.M., Nudurupati, S.S., Hutton, E.W.H. Gasparini, N.M., Istanbulluoglu, E., and Tucker, G.E., 2017, Creative computing with Landlab: an open-source toolkit for building, coupling, and exploring two-dimensional numerical models of Earth-surface dynamics: Earth Surface Dynamics, v. 5, n. 1, p. 21-46, doi: 10.5194/esurf-5-21-2017. 4. Hudnut, K.W., B. Brooks, K. Scharer, J.L. Hernandez, T.E. Dawson, M.E. Oskin, R. Arrowsmith, C.A. Goulet, K. Blake, M.L. Boggs, S. Bork, C.L. Glennie, J.C. Fernandez-Diaz, A. Singhania, D. Hauser, S. Sorhus (2020). 2019 Ridgecrest, CA Post-Earthquake Lidar Collection. National Center for Airborne Laser Mapping (NCALM). Distributed by OpenTopography. https://doi.org/10.5069/G9W0942Z.. Accessed: 2024-11-25 5. Opentopography; 2010年4月4日埃尔马约-库卡帕地震破裂带激光雷达扫描数据. 由OpenTopography发布. https://doi.org/10.5069/G9TD9V7D . Accessed: 2024-11-25 6. Scott, C., Adam, R., Arrowsmith, R., Madugo, C., Powell, J., Ford, J., Gray, B., Koehler, R., Thompson, S., Sarmiento, A., Dawson, T., Kottke, A., Young, E., Williams, A., Kozaci, O., Oskin, M., Burgette, R., Streig, A., Seitz, G., … Ingersoll, S. (2023). 评估主动断层制图对地震地表破裂位置的预测精度. 地球圈（Geosphere）. https://doi.org/10.1130/GES02611.1
