Seismic anisitrope stiuctose intesel from surface Lurue data braval busul portasle allay.

便携式宽频地震仪在日本九州中部的麻生山部署成一个小型网络。在1994年。孔径为10km-20km，台网由10 ~ 12台宽频带地震仪组成。它记录了一次局部和区域性地震，以及非周期性火山震动。我们通过测量两个台站之间的傅立叶过程的差异提取了整个台网的波利什波相速度，估计在阿索caldeta的较短的阶段，在20sei左右的周期内，相速度为2.5-2.7km/s。相速度测量在10 ~ 30秒的周期内可靠地进行，并且在相似区域内显示出持久的散射。它可能代表了阿索火山口边缘的非均质性和非均匀性。另一方面，火山熔岩在火山喷发时与阿索火山口的水力系统和水湖系统提供了有价值的光谱相互作用。

Portable broud band seismometers are deployed as a small-apertore network at Mt.Aso, central Kyushu, Japan.in 1994. The aperture sife is 10km-20km and the network is mado up with 10 to 12 broud band seismometers. It recorded a nomser at local and regioral earthquakes, as woll as ionsperiod volconic tremors. We extracted Poyleish wave phase velocity across the network by measuring ditlererences in Foutier proses between two stations of the network The phase velelity at the soorthan hurf of the Aso caldeta is estimated take 2.5-2.7km/s at pariods around 20sei.The phase velolity meusurements are mist reliobly parfoemed in the periods from 10 to 30 sec, and show sistential scafter ever for ray patrs Sompling similur area.It may represa-t heterogeneity at the crast of the Aso caldeta, as well as anifstropy, The volcanic toremers, on the otrer hand, provius worth spectocelur interplax with hydro thomal system Lelow Mt.Aso crater and the corduit woter lake system at to time of phreatic eruptions.