Open AccessGeomagnetic observatory operates at the seafloor in the northwest Pacific Ocean
Author(s) -
Toh Hiroaki,
Hamano Yozo,
Ichiki Masahiro,
Utada Hisashi
Publication year - 2004
Publication title -
eos, transactions american geophysical union
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.316
H-Index - 86
eISSN - 2324-9250
pISSN - 0096-3941
DOI - 10.1029/2004eo450003
Subject(s) - seafloor spreading , earth's magnetic field , observatory , geology , satellite , oceanography , remote sensing , astronomy , physics , quantum mechanics , magnetic field
The need to establish seafloor observatories has been important for decades. Multidisciplinary efforts aimed at establishing such observatories [e.g., Beranzoli et al. , 1998] are now culminating the ongoing Ocean Observatories Initiative [ Copley , 2004]. This article reports on how the world's first seafloor geomagnetic observatory NWP (North‐Western Pacific) is producing data that are compatible with those obtained by satellite Ørsted and the existing geomagnetic observatory network. In particular, the article reports on the remarkable agreement between the satellite‐predicted and actual secular variation, which ensures the accuracy of the geomagnetic measurements both in space and at the seafloor.