@article{oai:nipr.repo.nii.ac.jp:00010747,
 author = {Vera Schlindwein and Andrea Demuth and Edith Korger and Christine Läderach and Florian Schmid and Vera Schlindwein and Andrea Demuth and Edith Korger and Christine Läderach and Florian Schmid},
 issue = {1},
 journal = {Polar Science, Polar Science},
 month = {Mar},
 note = {The Arctic mid-ocean ridge system constitutes the most active source of earthquakes in the north polar region. However, the characteristics of its earthquake activity at teleseismic and local scales are not well studied because of the remote location of the ridge. We present here a comprehensive seismicity analysis that compares the teleseismic earthquake record of 35 years drawn from the catalogue of the International Seismological Centre with reconnaissance-style local earthquake records at six locations along the ridge that were instrumented either with ocean bottom seismometers or with seismometers on drifting ice floes. The teleseismic earthquake activity varies along the ridge and reflects ultraslow spreading processes with more and larger earthquakes produced in magma-rich regions than in magma-starved areas. Large magnitude earthquakes M > 5.5 are common along this ultraslow spreading ridge. Locally recorded earthquakes are of small magnitude (M < 2) and probably reflect the formation of the pronounced topographic relief. Their size and event rate is not as variable along the ridge as that of teleseismic events. Locally recorded earthquakes in the upper mantle are generated at several locations. Their focal depths do not depend on spreading rate but reflect the thermal state of the lithosphere with very deep earthquakes indicating an exceptionally cold lithosphere., 北極中央海嶺システムは、北極域の地震発生に最も寄与している。しかし遠地及び局所的スケールでの地震活動は、その海嶺が観測点から離れており、あまり調べられていない。この論文では、国際地震センター（ISC）カタログによる35年間の遠地地震と、海底地震計または漂流する氷盤上の地震計による、海嶺に沿う６領域の調査での局所地震記録とを比較して、この海嶺システムの包括的な地震活動を提示する。遠地で観測される地震活動は海嶺の場所により変化し、マグマ供給量の多い地域は無供給の場所より数が多く大きな地震が起こる等、超低速度の拡大プロセスを反映している。M5.5以上の地震は超低速度で拡大する海嶺に沿って共通にみられる。局所的に記録される地震は小規模（M2未満）で、おそらく著しい地形起伏の形成過程を反映している。この局所地震の大きさと割合は、遠地で観測される地震ほどには確認できない。上部マントル内の局所地震は様々な場所で発生しており、震源の深さは拡大速度に依存せずリソスフェアの熱的な状態を反映している。},
 pages = {146--157},
 title = {Seismicity of the Arctic mid-ocean Ridge system},
 volume = {9},
 year = {2015}
}