Three (nearly) complete inventories of landslides triggered by the May 12, 2008 Wenchuan Mw 7.9 earthquake of China and their spatial distribution statistical analysis
Three (nearly) complete inventories of landslides triggered by the May 12, 2008 Wenchuan Mw 7.9 earthquake of China and their spatial distribution statistical analysis
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2008年5月12日中国汶川7.9级地震引发的三处（接近）滑坡清查及其空间分布统计分析
DOI：
10.1007/s10346-013-0404-6
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发表时间：
2014-06
期刊：
影响因子：
6.7
通讯作者：
Dai, Fuchu
中科院分区：
文献类型：
--
作者：
Xu, Chong;Xu, Xiwei;Yao, Xin;Dai, Fuchu
摘要 2008年5月12日中国汶川地震（7.9级或8.0级）引发了数十万起山体滑坡。考虑到受影响区域面积大以及震前和震后遥感图像的可用性，绘制如此大量的滑坡地图是一项艰巨的任务。本文比较了根据视觉图像解释编制的三个（几乎）完整的滑坡清单。这三个清单的不同之处在于滑坡的表示方式，无论是多边形、质心点还是顶点。三个清单中的滑坡使用一一对应。三个清单中的每一个都包含了地震引发的 197,481 起山体滑坡中的很大一部分。使用地震后获取的高分辨率航空照片和卫星图像的视觉解释，将这些山体滑坡描绘为单独的实心多边形和点，并通过在约 110,000 平方公里的广阔区域内进行的选定现场检查进行验证。这些山体滑坡的总面积约为 1,160 平方公里。根据滑坡多边形和滑坡质心点的清单，构建了两种类型的密度图。使用三个滑坡清单分析了滑坡发生与地震、地质和地形参数的相关性。使用滑坡面积百分比（LAP）（定义为受滑坡影响的面积的百分比）和滑坡数量密度（LND）（定义为每平方公里的滑坡数量）对其空间分布进行统计分析。 LND 有两种类型：LND-centroid（基于滑坡的质心）和 LND-top（基于滑坡的顶部点）。我们利用这三个指标来确定滑坡的发生与海拔、坡角、坡向、坡位、坡度、岩性、距震中的距离、地震烈度、距映秀-北川地表断层破裂的距离、峰值地面加速度(PGA)和同震地表位移(包括水平、垂直和总位移)的关系。 LAP和两类LND值均与坡角、坡曲率、距震中距离、距映秀-北川地表断层破裂、地震烈度、同震地表位移等呈连续正相关或负相关。此外，LAP 和 LND 值的最高值出现在海拔 1,200 至 3,000 米的范围内。此外，滑坡具有优先方向，以东部、东南部和南部方向为主。此外，砂岩、粉砂岩（Z）、花岗岩滑坡较为集中。 LAP和LND值与斜坡位置之间没有观察到明显的相关性。最后，我们研究了8个地震引发滑坡影响因子对滑坡发生的影响顺序。重点圈定了2008年汶川地震引发的197,481个滑坡。构建了三个滑坡清单：多边形、质心和顶点清单。对滑坡进行了地形、岩性和地震参数的空间分析。
AbstractThe May 12, 2008 Wenchuan earthquake of China (Mw 7.9 or Ms 8.0) triggered hundreds of thousands of landslides. Mapping such a large number of landslides is a major task, considering the large size of the affected area and the availability of pre- and post-earthquake remote sensing images. This paper compares three (nearly) complete landslide inventories that were compiled from visual image interpretation. The three inventories differ in the manner in which the landslides are represented, either as polygons, centroid points, or top points. Landslides in the three inventories use one-to-one correspondence. Each of the three inventories includes a large proportion of the 197,481 landslides triggered by the earthquake. These landslides were delineated as individual solid polygons and points using visual interpretation of high-resolution aerial photographs and satellite images acquired following the earthquake and verified by selected field checking throughout a broad area of approximately 110,000 km2. These landslides cover a total area of approximately 1,160 km2. Based on the inventories of landslide polygons and landslide centroid points, two types of density maps were constructed. Correlations of landslide occurrence with seismic, geologic, and topographic parameters were analyzed using the three landslide inventories. Statistical analysis of their spatial distribution was performed using both the landslide area percentage (LAP), defined as the percentage of the area affected by the landslides and the landslide number density (LND), defined as the number of landslides per square kilometer. There are two types of LNDs: the LND-centroid (based on the centroid point of the landslide) and the LND-top (based on the top point of the landslide). We used the three indexes to determine how the occurrence of the landslides correlates with elevation, slope angle, slope aspect, slope position, slope curvature, lithology, distance from the epicenter, seismic intensity, distance from the Yingxiu-Beichuan surface fault rupture, peak ground acceleration (PGA), and coseismic surface displacements (including horizontal, vertical, and total displacements). Both the LAP and the two types of LND values were observed to have continuous positive or negative correlations with the slope angle, slope curvature, distance from the epicenter and from the Yingxiu-Beichuan surface fault rupture, seismic intensity, and coseismic surface displacement. In addition, the highest values of the LAP and LND values appear at ranges from 1,200 to 3,000 m in elevation. Moreover, the landslides have preferred orientations, dominated by the eastern, southeastern, and southern directions. In addition, the sandstone, siltstone (Z), and granitic rocks experienced more concentrated landslides. No obvious correlations were observed between the LAP and LND values and slope position. Finally, we studied the orders of eight earthquake-triggered landslide impact factor effect on landslide occurrence.HighlightsThe 197,481 landslides triggered by the 2008 Wenchuan earthquake were delineated.Three landslide inventories were constructed: polygon, centroid, and top point inventories.The landslides were spatially analyzed with topographic, lithology, and seismic parameters.
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影响因子：
2.8
作者：
M. Michele;D. Raucoules;J. Sigoyer;M. Pubellier;N. Chamot‐Rooke
通讯作者：
M. Michele;D. Raucoules;J. Sigoyer;M. Pubellier;N. Chamot‐Rooke
影响因子：
5.3
作者：
Malamud, BD;Turcotte, DL;Reichenbach, P
通讯作者：
Reichenbach, P
影响因子：
6.7
作者：
H. Yamagishi;J. Iwahashi
通讯作者：
H. Yamagishi;J. Iwahashi
影响因子：
--
作者：
Xu Chong;D. Fu-chu;Chen Jian;Tu Xin-bin;X. Ling;Li Wei-chao;Tian Wei;Cao Yan-bo;Y. Xin-Y.-Xi
通讯作者：
Xu Chong;D. Fu-chu;Chen Jian;Tu Xin-bin;X. Ling;Li Wei-chao;Tian Wei;Cao Yan-bo;Y. Xin-Y.-Xi
DOI：
--
发表时间：
1951-08
期刊：
--
影响因子：
--
作者：
森本 良平
通讯作者：
森本 良平