将手指放在慢动作地震的脉冲

细节
会场
日期
周四2020年10月29日
成本
自由
时间
下午3点在英国的时间
需要预订
没有
earth2earth地球科学研讨会系列

扬声器: 医生劳拉华莱士(UT阿斯廷), 艾米丽博士沃伦 - 史密斯(GNS科学)

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Image courtesy L Wallace & E Warren-Smith

Image courtesy of L Wallace & E Warren-Smith

抽象: The discovery of slow-motion earthquakes, or slow slip events (SSEs), at subduction zones in the last two decades has transformed our understanding of fault mechanics and earthquake occurrence. The northern Hikurangi subduction zone offshore New Zealand’s 没有rth Island has become a focal point for investigation of this phenomena, as the shallow occurrence of SSEs (<2-15 km) there enables near-field investigations of these processes. We will discuss a range of investigations being undertaken to better characterize the SSEs and related seismicity, as well as recent results from scientific drilling and seismic imaging to reveal the environment and rock types that host SSEs. We will also discuss results of recent efforts to use seaflo要么 geodetic methods to resolve SSE processes near the trench.

地震和大地观测的整合已导致的SSE被链接到的存在的建议,并且在内部和逆冲剪切带下方的流体压力的波动,通过一个“故障阀”的过程。我们将讨论在暗示流体压力的前兆增加上证所周期期间使用的应力变化推断地震证据可事实上普瑞森大型逆冲断层破裂的SSE。我们也考虑旁边地壳性质的地球物理观测的地震位置,以确定流体触发浅SSE的潜在来源。这些意见是未来的目标努力,监测期间上证周期断裂带性质的局部变化,在努力了解的断层滑动行为和episodicity物理控制很重要。
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将手指放在慢动作地震的脉冲

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