## Correction

In the publication of this article (Nagaashi et al., 2018), there was an error in equations (7) and (10).

The error:

Should instead read:

This has now been updated in the original article (Nagaashi et al., 2018).

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# Correction to: Laboratory experiments on agglomeration of particles in a granular stream

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*Progress in Earth and Planetary Science*
**volume 5**, Article number: 71 (2018)

In the publication of this article (Nagaashi et al., 2018), there was an error in equations (7) and (10).

The error:

$$ {v}_{cr}\cong 3.86\frac{\gamma^{\frac{5}{6}}{\left[\left(1-{v}^2\right)/\varepsilon \right]}^{-\frac{1}{3}}}{R^{\frac{5}{6}}{\rho}^{\frac{1}{2}}}, $$

(7)

$$ {v}_{cr}\cong 35\frac{\gamma^{\frac{5}{6}}{\left[\left(1-{v}^2\right)/\varepsilon \right]}^{-\frac{1}{3}}}{R^{\frac{5}{6}}{\rho}^{\frac{1}{2}}}, $$

(10)

Should instead read:

$$ {v}_{cr}\cong 3.86\frac{\gamma^{\frac{5}{6}}}{{\left[\left(1-{v}^2\right)/\varepsilon \right]}^{-\frac{1}{3}}{R}^{\frac{5}{6}}{\rho}^{\frac{1}{2}}}, $$

(7)

$$ {v}_{cr}\cong 35\frac{\gamma^{\frac{5}{6}}}{{\left[\left(1-{v}^2\right)/\varepsilon \right]}^{-\frac{1}{3}}{R}^{\frac{5}{6}}{\rho}^{\frac{1}{2}}}, $$

(10)

This has now been updated in the original article (Nagaashi et al., 2018).

Nagaashi Y, Omura T, Kiuchi M et al (2018) Laboratory experiments on agglomeration of particles in a granular stream. Prog Earth Planet Sci 5:52 https://doi.org/10.1186/s40645-018-0205-6

The original article can be found online at https://doi.org/10.1186/s40645-018-0205-6

**Open Access** This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.

Nagaashi, Y., Omura, T., Kiuchi, M. *et al.* Correction to: Laboratory experiments on agglomeration of particles in a granular stream.
*Prog Earth Planet Sci* **5**, 71 (2018). https://doi.org/10.1186/s40645-018-0233-2

Published:

DOI: https://doi.org/10.1186/s40645-018-0233-2