Partitioning between seismogenic and aseismic slip as highlighted from slow slip events in Hyuga‐nada, Japan
Partitioning between seismogenic and aseismic slip as highlighted from slow slip events in Hyuga‐nada, Japan
复制标题
日本日向滩慢滑移事件突显出震源滑移与地震滑移之间的划分
DOI：
10.1029/2002gl015664
复制
发表时间：
2003
影响因子：
5.2
通讯作者：
M. Kikuchi
中科院分区：
文献类型：
--
作者：
Y. Yagi;M. Kikuchi
我们提出了一种分析GPS数据的数值方法，并检查了日本西部的Hyuga -Nada中的慢性断层 - 菲律宾海板套在欧亚板块下的菲律宾海板俯冲和7级级别的地震。在1996年发生了两次大地震之后，慢速滑坡从源区域扩展到北部，然后引发了另一个慢速事件，其特征源持续时间约为一年。 Aseismic Slip突出了一个特定的地点，在该地点很少发生故障，但是俯冲板拖动板块，值得注意的是，突出显示的区域只是过去的大地震的地点。未来大地震的可能地点。
We present a numerical method to analyze the GPS data, and examine slow fault‐slips in Hyuga‐nada, a region in western Japan where the Philippine Sea plate subducts under the Eurasian plate and earthquakes of Magnitude 7 class are frequent. We found that, after two large earthquakes in 1996, a slow fault‐slip expanded from the source area to the north and then triggered another slow event with a characteristic source duration of about one year. The aseismic slip has increasingly highlighted a particular site where little slow fault‐slip takes place but where the subducting plate drags the overriding plate. It is noteworthy that the highlighted area is just the site of a past large earthquake. We propose that this area is a possible site for a future large earthquake.