@article{oai:nipr.repo.nii.ac.jp:00010206,
 author = {Himeno, Tetsuto and Kanao, Masaki and Ogata, Yosihiko and Himeno, Tetsuto and Kanao, Masaki and Ogata, Yosihiko},
 issue = {4},
 journal = {Polar science, Polar science},
 month = {Dec},
 note = {A large earthquake (Mw 8.1) that occurred off the North Coast of the Antarctic continent near the Balleny Islands on 25 March 1998 was the largest intra-plate earthquake ever recorded in the Antarctic Plate. The earthquake hypocenter catalog for this area shows a marked change in seismicity following the main shock in a large area around the Balleny aftershock region. However, the earthquake catalog includes many aftershocks and is affected by a variable detection rate. To overcome these limitations, we applied statistical models and methods, including Gutenberg–Richter's magnitude frequency distribution, the Epidemic-Type Aftershock Sequences (ETAS) model, and the space–time ETAS model, thereby enabling calculation of the change in detection rate. The results show a change in the spatial pattern of background seismicity over a large region after the 1998 event., 1998年3月25日にバレニー諸島周辺で発生した大地震は、南極プレート周辺でこれまでに記録されてきた地震の中で最大のものであった。このバレニー地震発生後、その周辺の地震活動度の変化が地震カタログからは見て取れる。しかし、地震カタログには余震や地震の検知率の変化の影響も含まれているため、本当に地震活動が活発になっているか判断することは難しい。そこで、我々はEpidemic Type Aftershock Sequences (ETAS) モデルなどの統計手法を用い、余震などの影響を取り除いた地震活動度(background seismicity)の変化を調べた。},
 pages = {421--431},
 title = {Statistical analysis of seismicity in a wide region around the 1998 Mw 8.1 Balleny Islands earthquake in the Antarctic Plate},
 volume = {5},
 year = {2011}
}