DOI: 10.1016/j.epsl.2021.117114
论文题名: Corrigendum to “Discharge rate of explosive volcanic eruption controls runout distance of pyroclastic density currents” [Earth Planet. Sci. Lett. 568 (2021) 117017] (Earth and Planetary Science Letters (2021) 568, (S0012821X21002764), (10.1016/j.epsl.2021.117017))
作者: Roche O. ; Azzaoui N. ; Guillin A.
刊名: Earth and Planetary Science Letters
ISSN: 0012821X
出版年: 2021
卷: 571 语种: 英语
英文摘要: [Figure Presented] The authors regret an inaccuracy in Figures 8e and 8f. The parameter Tde-di defined by Breard et al. (2018) is a function of the Sauter particle mean diameter at half the runout distance (ds,1/2 in Eq. (14)). The determination of ds,1/2, however, is not straightforward because it requires knowing the full particle size distribution, which is very rarely given in the literature or cannot be recovered from welded deposits. For this reason, we assumed that the mean grain size Mdϕ (see Fig. 6) was close to ds,1/2 and we used the Mdϕ values to calculate Tde-di; this concerned 11 cases out of 14 for dilute currents and 17 cases out of 28 for concentrated currents, and we assigned the respective mean values 0.81ϕ (0.57 mm) and 0.23ϕ (0.85 mm) when Mdϕ was not known. However, this approximation is wrong in most cases because ds,1/2 can be an order of magnitude smaller than Mdϕ due to the large polydispersity (i.e. sorting) of deposits of pyroclastic density currents (Eric Breard, personal communication; Breard et al., 2019). The true values of Tde-di are therefore between the extreme values calculated with Mdϕ and Mdϕ/10, and closer to the values with Mdϕ/10. The figure above shows Tde-di, calculated with ds,1/2= Mdϕ/10, as a function of the volume of the deposits (V) and the discharge rate (Q). It indicates that the transition between concentrated and dilute currents is closer to that given by Breard et al. (2019, dashed line in the figure) than suggested in our paper. We thank Eric Breard for his comment. The authors would like to apologise for any inconvenience caused. © 2021 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/165649
Appears in Collections: 气候变化与战略
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作者单位: Laboratoire Magmas et Volcans, University Clermont Auvergne, CNRS, IRD, OPGC, Clermont-Ferrand, 63000, France; Laboratoire de Mathématiques Blaise Pascal, University Clermont Auvergne, CNRS, Clermont-Ferrand, 63000, France
Recommended Citation:
Roche O.,Azzaoui N.,Guillin A.. Corrigendum to “Discharge rate of explosive volcanic eruption controls runout distance of pyroclastic density currents” [Earth Planet. Sci. Lett. 568 (2021) 117017] (Earth and Planetary Science Letters (2021) 568, (S0012821X21002764), (10.1016/j.epsl.2021.117017))[J]. Earth and Planetary Science Letters,2021-01-01,571