@article{oai:nipr.repo.nii.ac.jp:00002355,
 author = {Roettger, Juergen},
 journal = {Memoirs of National Institute of Polar Research. Special issue},
 month = {Mar},
 note = {P(論文), Two new radars are operated at high polar latitudes on Svalbard, the EISCAT Svalbard Radar (ESR) and the SOUSY Svalbard Radar (SSR). The application of these systems for studies of Polar Mesosphere Summer Echoes (PMSE) is described. The ESR is also used for studies of the D-region using the incoherent scatter method. Combined observations with these two radars yield insight into the wavenumber dependence of the scatter cross section, which in turn leads to indications on the diffusion of electrons in the presence of heavy ions.},
 pages = {9--20},
 title = {Observations of the polar D-region and the mesosphere with the EISCAT Svalbard Radar and the SOUSY Svalbard Radar (scientific paper)},
 volume = {54},
 year = {2001}
}