Velocity profile inversion in dense avalanche flow

Velocity profile inversion in dense avalanche flow
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DOI:
10.3189/172756410791386643
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发表时间:
2010-01-01
影响因子:
2.9
通讯作者:
Sovilla, Betty
Sovilla, Betty
中科院分区:
地球科学4区
文献类型:
--
作者:
Kern, Martin A.;Bartelt, Perry A.;Sovilla, Betty

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我们提出了一个速度的时间序列的干混合的真实规模的雪崩,记录在不同的高度上的桅杆在瑞士谷德拉Sionne雪崩试验场。该数据集在完整性和时空分辨率方面具有非凡的质量,并允许跟踪雪崩不同流动阶段的演变。特别是,我们发现速度剖面反转的过渡从雪崩前的雪崩机构。我们提供了一个试探性的经验描述的轮廓反转,并简要讨论了我们的意见,在理论上的考虑。
We present a velocity time series of a dry-mixed real-scale avalanche that was recorded at different heights on a mast at the Swiss Vallee de la Sionne avalanche test site. The dataset is of extraordinary quality in terms of completeness and spatio-temporal resolution, and allows the evolution of distinct flow phases of the avalanche to be traced. In particular, we found velocity profile inversions at the transition from the avalanche front to the avalanche body. We provide a tentative empirical description of the profile inversions and briefly discuss our observations in the light of theoretical considerations.