Pacific region water level variation and magnetic field data for January 15, 2022

On January 15, 2022, at around 04:00 UTC, the submarine volcano Hunga Tonga-Hunga Ha`apai explosively erupted. The 2022 Geophysical Research Letters article "Magnetic Signatures of the January 15 2022 Hunga Tonga–Hunga Ha`apai Volcanic Eruption" by N. R. Schnepf, T. Minami, H. Toh, and M. C. Nair uses data from ten Pacific Ocean geomagnetic observatories and four corresponding water level stations to evaluate the time-frequency characteristics of the eruption's magnetic signals across the Pacific region. This dataset composes the data used in that study. The ten Pacific Ocean geomagnetic observatories include the INTERMAGNET stations of API at Western Samoa, Samoa, ASP at Alice Springs, Australia, CNB at Canberra, Australia, CTA at Charters Towers, Australia, EYR at Eyrewell, New Zealand, HON at Honolulu, USA, IPM at Easter Island, Chile, KAK at Kakioka, Japan, KNY at Kanoya, Japan, MMB at Memambetsu, Japan and PPT at Papeete, Tahiti, and also the Japanese Meteorological Agency's (JMA) station CBI at Chichijima Island, Japan. The four water level stations were located at Honolulu, HI, USA (National Oceanic and Atmospheric Administration), Chichijima Island, Japan (JMA), Western Samoa, Samoa, Easter Island, Chile (Intergovernmental Oceanographic Commission, IOC) and Papeete, Tahiti (IOC). The magnetic field's vertical and horizontal components-- as used in the corresponding geophysical study-- are given in this dataset.