Erratum to: Reconstruction of a 2D seismic wavefield by seismic gradiometry (Progress in Earth and Planetary Science, (2016), 3, 1, (31), 10.1186/s40645-016-0107-4)

In the publication of this article (Maeda et al. 2016), there was an error in the Real-world application: 2005 Off-Tohoku outer-rise earthquake section which was published with an incorrect day an earthquake occured and moment magnitude scale. The error: ‘Next, we applied the same technique to real observations made during an earthquake that occurred in the east off Tohoku on 16 August 2005 (Mw 7.2).’ Should instead read: ‘Next, we applied the same technique to real observations made during an earthquake that occurred in the east off Tohoku on 14 November 2005 (Mw 7.0).’ This has now been included in this erratum.