We recently realized that some entries in the earthquake catalog attached as Ⓔ Table S1 of the electronic supplement to Sandron et al. (2015) are incorrect. The magnitude values in the corresponding ML column of the first part of the catalog (from the beginning to line 370) contained typographical errors.
This erratum updates Ⓔ Table S1 of the electronic supplement and provides the correct data for the earthquake catalog. These corrections do not affect the results and the conclusion of the article.