Additional file 1 of A quest for unrest in multiparameter observations at Whakaari/White Island volcano, New Zealand 2007–2018

• Main Authors: Corentin Caudron (11593852), Társilo Girona (8814176), Arthur Jolly (7544249), Bruce Christenson (6451511), Martha Kane Savage (11593855), Roberto Carniel (8199714), Thomas Lecocq (134074), Ben Kennedy (7633934), Ivan Lokmer (9091835), Alexander Yates (11593858), Ian Hamling (11593861), Iseul Park (11593864), Geoff Kilgour (3764278), Agnès Mazot (11593867)
• Format: Other Non-Article Part of Journal/Newspaper
• Language: unknown
• Published: 2021
• Subjects: Geology; Volcanology; Monitoring; Phreatic eruption; Seismic noise; Tremor; New Zealand; White Island
• Online Access: https://doi.org/10.6084/m9.figshare.16851163.v1

Additional file 1: Figure S1. Seismic velocity (single station cross-component approach) estimated using (a) the stretching and (b) the MWCS approaches between 0.1 and 1 Hz. The pink period in 2012–2013 delineates the magmatic eruption and the last two red lines mark the phreatic eruptions. The black and red lines correspond to the daily mean values across different combinations of components (EN, EZ and ZN) smoothed using a Hodrick–Prescott filter with different values, 500,000 and 100,000,000, respectively. See Fig. 4 for the description of the vertical lines corresponding to key time periods. Key periods are (1) 2011 earthquake swarm (2) dome extrusion (3) April 2016 eruption. Each tick on the x-axis corresponds to 1 January of each year.