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层面成象技术(Tomography)的应用 目前在美国南加利福尼亚州约有250个地震台,这些台主要是短周期的垂直分量记录仪器,它们覆盖了直径约为350km的地区。南加州的台站已有50年的历史,这250个台是覆盖在原来的台网上的,因此给进一步研究南加州的地质构造和地震成因提供了条件。但由于仅有单分向的记录,频带宽度也比较窄,因而还有一定的局限性。
Tomography is currently used in about 250 seismostats in southern California, USA. These stations are mainly short-cycle vertical component recording instruments that cover an area of about 350 km in diameter. Southern California has been stationed for 50 years. The 250 stations are overlaid on the original network of stations, thus providing a basis for further study on the geological structure and the causes of the earthquake in Southern California. However, since there is only a single direction of recording, the bandwidth is also relatively narrow, so there are some limitations.