其他null检测 | 1980年圣海伦火山坍塌的架构：罗森奎斯特所拍摄系列照片的数字图像相关分析-北京欧兰科技发展有限公司

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应用领域	地矿
检测样本	其他
检测项目
参考标准	暂无

非介入式全场应变形变测量，可用于各种材料压缩和拉伸形变试验中，也可用于冶金，地质，矿产研究和工业领域。

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LaVision StrainMaster材料应变形变成像测量系统
型号：StrainMaster

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方案详情

The collapse of Mount St. Helens (United States) on 18 May 1980 is one of the only incidents
of its kind that was visually witnessed and instrumentally recorded. Previous analyses
determined that the northern fl ank of the mountain failed, which resulted in a rockslide, and
disintegrated during its mobilization to form a blocky facies and hummocky terrain in the
downslope region. Gary Rosenquist’s iconic photographs of the initial 18 May collapse were
here analyzed by using a modern photogrammetric method to track portions of the moving
fl ank across the photographs in the sequence. Thirty years after the 1980 Mount St. Helens
rockslide, the digital image correlation technique enabled a precise investigation of the associated
displacement vectors and strain. A listric basal detachment and several associated faults
at the lateral edge of the rockslide were identifi ed. In addition, the heterogeneous movements
and a number of shear zones were detected within the sliding block, which had previously
been assumed to be cohesive. The results of my study demonstrate the value of using optical
images for strain analyses of active volcanoes—even decades after recording.

上一篇在一个双稳湍流涡旋火焰中，对间歇性动态的时间-频率定位

下一篇数字图像相关DIC分析种植修复治疗过程中的载荷传递

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北京欧兰科技发展有限公司

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