Evidence From High-Resolution Topography for Multiple Earthquakes on High Slip-to-Length Fault Scarps: The Bilila-Mtakataka Fault, Malawi
Evidence From High-Resolution Topography for Multiple Earthquakes on High Slip-to-Length Fault Scarps: The Bilila-Mtakataka Fault, Malawi
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DOI：
10.1029/2019tc005933
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发表时间：
2020-02-01
期刊：
影响因子：
4.2
通讯作者：
Williams, J. N.
中科院分区：
文献类型：
--
作者：
Hodge, M.;Biggs, J.;Williams, J. N.
断层陡坎、溪流拐点等地貌特征是近期断裂活动的标志。确定这些特征是在一次地震中形成的，还是在多个地震周期中形成的，对于解释过去事件的规模和频率具有重要意义。在这里，我们关注马拉维的Bilila-Mtakataka断层，那里20米高的断层陡峭超过了一次地震破裂的预期高度。我们使用一个高分辨率的数字高程模型(
Geomorphological features such as fault scarps and stream knickpoints are indicators of recent fault activity. Determining whether these features formed during a single earthquake or over multiple earthquakes cycles has important implications for the interpretation of the size and frequency of past events. Here, we focus on the Bilila-Mtakataka fault, Malawi, where the 20 m high fault scarps exceed the height expected from a single earthquake rupture. We use a high-resolution digital elevation model (