@article{oai:nifs-repository.repo.nii.ac.jp:00010761, author = {Kobayashi, Tatsuya and Sasaki, M. and IDO, Takeshi and Kamiya, K. and MIURA, Y. and Nagashima, Y. and IDA, Katsumi and INAGAKI, Shigeru and FUJISAWA, Akihide and ITOH, Sanae -I. and ITOH, Kimitaka}, issue = {4}, journal = {Physical review letters}, month = {Jan}, note = {0000-0001-5669-1937, We investigate spatial structures of turbulence and turbulent transport modulated by the geodesic acoustic mode (GAM), from which the excitation mechanism of the GAM is discussed. The GAM is found to be predominantly excited through a localized Reynolds stress force, rather than the dynamic shearing force. The evaluated growth rate is larger than the linear damping coefficients and is on the same order of magnitude as the effective growth rate evaluated from time evolution in the GAM kinetic energy.}, title = {Quantification of Turbulent Driving Forces for the Geodesic Acoustic Mode in the JFT-2M Tokamak}, volume = {120}, year = {2018} }