CAJ | 학술논문

研究马尼拉俯冲带地震分布的成因机制，根据马尼拉俯冲带最新的莫霍面深度和地壳厚度等地质与地球物理资料，选取3条典型剖面，模拟俯冲带热结构。结果表明：①俯冲带热结构主要受俯冲角度、俯冲速度和俯冲板块本身地质条件等因素影响；②BB'剖面和CC'剖面属于热俯冲；③当洋壳俯冲至软流圈边界时，俯冲板块温度迅速升高，容易形成地震活动。 BB'剖面的俯冲角度和俯冲速度比CC'剖面小，使得BB'剖面发生地震的深度更浅。俯冲洋壳底部温度比顶部低，地震活动也持续到更大的深度。
연구마니랍부충대지진분포적성인궤제，근거마니랍부충대최신적막곽면심도화지각후도등지질여지구물리자료，선취3조전형부면，모의부충대열결구。결과표명：①부충대열결구주요수부충각도、부충속도화부충판괴본신지질조건등인소영향；②BB'부면화CC'부면속우열부충；③당양각부충지연류권변계시，부충판괴온도신속승고，용역형성지진활동。 BB'부면적부충각도화부충속도비CC'부면소，사득BB'부면발생지진적심도경천。부충양각저부온도비정부저，지진활동야지속도경대적심도。
In order to study the formation mechanism of the manila subduction zone earthquakes distribution, based on the latest Moho depth and crustal thickness and other geological and geophysical dates, three typical cross-sections, this paper simulated thermal structure of subduction zones. The results show that ①thermal structure of subduction zone is mainly affected by subduction angle, velocity and geological conditions of the plate itself; ② BB’ and CC’ are warm subduction; ③ When the ocean crust arrive the asthenosphere boundary, the plate temperature rises rapidly, forming dense earthquakes. BB’ have a shallower earthquake because of the smaller subduction angles and velocity. Subducted oceanic crust temperature at the bottom is lower than the top, earthquakes have continued to greater depth.