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利用德国GRSN宽频带台网、GRF宽频带台阵和美国SCSN短周期台网记录到的发生于鄂霍次克海的地震资料,采用N次根倾斜叠加方法,研究了鄂霍次克海下间断面的存在情况、410和660 km间断面的形态和性质,并且探讨了俯冲板块在660 km间断面附近的穿透情况.结果表明,在鄂霍次克海地区410和660 km间断面比较清楚,同时在其他深度如150,220和520 km也可能存在间断面;发现在俯冲区域410和660 km间断面分别发生抬升和下凹,为相变界面提供了证据;在鄂霍次克海俯冲带的北部,俯冲板块可能穿透660 km间断面进入下地幔;而在南部,则更可能是在660 km间断面上停滞
Seismic data of the Okhotsk Sea recorded by the German GRSN broadband network, the GRF broadband array and the US SCSN short-period network were used to study the sub-sea sections of the Okhotsk Sea Cross Section And the morphology and properties of sections 410 and 660 km, and the penetration of the subducted plate near the section of 660 km was discussed.The results show that the section between 410 and 660 km in the Sea of Okhotsk is relatively clear, at the same time There are also possible discontinuities at other depths such as 150, 220 and 520 km. It is found that uplift and depression occur respectively in the 410 and 660 km sections of the subduction zone, which provides evidence for the phase change interface. In the northern Okhotsk subduction zone, The plate may penetrate the 660-km section into the lower mantle; in the south, it is more likely to be stagnant over the 660-km section