GPS/音響測距結合方式による海底地殻変動観測の現状と課題

摘要

キネマティツクGPS測位と海中音響測距を組み合わせ，海底に設置した音響基準局の位置を測定するGPS/音響測距結合方式による海底地殻変動観測について，手法の概要及び主な成果を紹介するとともに、今後の課題についての考察を行う．%Japan coast guard has been developing a precise seafloor positioning system using GPS/Acoustic combination technique. The outline of this technique and the data analysis methods are reviewed. The results obtained off Miyagi are presented as examples of remarkable results. Further issues to be tackled in the future are summarized.