All-sky imaging of transglobal thermospheric gravity waves generated by the March 2011 Tohoku Earthquake

摘要

We report on imaging measurements of thermospheric gravity wave signatures in 630nm and 557.7nm nightglow that suggest an association with the M= 9 Tohoku (Japan) earthquake on 11 March 2011. The propagating waves were recorded in all-sky images at the El Leoncito Observatory, Argentina (31.8°S, 69.3°W), which is located 17,080 km from the earthquake epicenter, almost at the global antipodal point.