@article{oai:nipr.repo.nii.ac.jp:00010738,
 author = {Iwata, Takaki and Kanao, Masaki and Iwata, Takaki and Kanao, Masaki},
 issue = {1},
 journal = {Polar Science, Polar Science},
 month = {Mar},
 note = {In this study, we evaluate the annual variation in teleseismic detection capability at Syowa Station (69.0°S, 39.6°E) located in East Antarctica, a variation that has been noted in previous studies. For the quantitative evaluation of the annual variation, we introduced a statistical model of a magnitude–frequency distribution of earthquakes covering the entire magnitude range. The annual variation in the model parameter that quantifies the detection capability was then estimated by using Bayesian analysis. In the estimation, we incorporated the annual variation in air temperature at the station and succeeded in clarifying the significant effect that the variation in temperature has on the teleseismic detection capability., 南極・昭和基地における，遠地地震検知能力の年変化について解析を行った．この年変化の存在は，過去の研究が既に報告している．その発展として，本研究では，年変化の定量的評価を行い，それと気温との関係を調べた．まず，観測した全地震のマグニチュード別頻度分布を表現した確率分布モデルを構成する．そして，このモデル内に含まれる，地震検知能力を定量化したパラメータの時間変化を「ベイズ平滑化」と呼ばれる方法で推定した．これに加え，昭和基地の気温時系列を説明変数とし，それが検知能力の年変化へ与える影響を考慮した場合についても解析を行った．統計的なモデル比較の結果，気温の影響を考慮したモデルの方が，考慮しなかったものよりも有意によく，地震検知能力と気温との相関が示された。},
 pages = {26--34},
 title = {A quantitative evaluation of the annual variation in teleseismic detection capability at Syowa Station, Antarctica},
 volume = {9},
 year = {2015}
}