کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6430603 | 1634804 | 2012 | 8 صفحه PDF | دانلود رایگان |
While the location and shape of magma chambers beneath active volcanoes play a key role in understanding magma transport and forecasting volcanic activity, the nature of magma chambers, particularly their shape, is not fully understood. Here we found a low velocity body too small to be detected from conventional techniques by the aid of a modern technique called seismic interferometry. Combining our result with independent observations suggests that the low velocity body is likely to represent a magma chamber. Our findings demonstrate the utility of seismic interferometry in imaging a small scale feature with a size of less than 10Â km.
⺠We investigated the internal structure of Asama volcano from ambient noise. ⺠A low velocity body is found to the west of the summit at 5-10 km. ⺠The low velocity body is likely to be a magma chamber. ⺠Size of the magma chamber should be smaller than 10 km in diameter.
Journal: Earth and Planetary Science Letters - Volumes 333â334, 1 June 2012, Pages 1-8