地震波形の相似性からみた前震と群発地震の違いについて(序報)
スポンサーリンク
概要
- 論文の詳細を見る
The earthquake swarms occurred at seven areas distributed in the Kanto district and foreshocks preceding the Izu-Oshima-kinkai earthquake (M=7.0) of 1978 are studied through the analysis of waveform. The earthquakes in a given swarm activity usually share a similar waveform, and the arrival times for certain isolated waves measured from the P-wave onset of their events are the same within the deviation of 0.1 sec. Especially when earth- quakes of similar size are compared, their waveforms frequently coincide from P-wave onset till coda waves. Similar behavior, but with different waveforms are seen for earthquake swarms occurring in other areas. On the other hand, the waveform of foreshocks differs significantly from event to event even if the events occurred within a short time interval (e.g., 1 hour). If such features are always observed, the present results will be useful for the discrimination of swarm activity from other earthquake activity such as the foreshocks of a major earthquake.
- 1979-12-25
論文 | ランダム
- 本邦における糖尿病婦人の妊娠
- 母児間血液型不適合の必須検査 (産婦人科診療における必須検査指針(特集))
- 母子血液型不適合の問題 (産婦人科領域における輸血の諸問題(特集))
- 新生児重症黄疸の薬物療法 (薬物療法のキーポイント(特集))
- 445 3T MRAとCTAにおける脳動脈瘤好発部位の血管描出の比較(MR検査 3テスラ・磁化率強調,一般研究発表,日本放射線技術学会 第34回秋季学術大会)