Investigating earthquake determinism with a multi-method approach

用多种方法研究地震决定论

• 批准号: 2438252
• 金额: --
• 依托单位: University of Oxford
• 依托单位国家: 英国
• 项目类别: Studentship
• 财政年份: 2020
• 资助国家: 英国
• 起止时间: 2020 至 无数据
• 项目状态: 未结题
• 来源: https://gtr.ukri.org/projects?ref=studentship-2438252
• 关键词: Investigating; earthquake; determinism; multi; method

On average there are about 140,000 detectable earthquakes a year, of which around 15 grow to be magnitude 7 or greater. After an earthquake, we can simply calculate this final magnitude, but it is unclearif an earthquake `knows' its final magnitude before rupture ends. If characteristics of nucleation and early rupture allow us to determine earthquake magnitude, we say nucleation is deterministic (1). In the past, wehave applied many different approaches to understand the extent to which this paradigm is true. However, I have identified a key limitation of existing work on determinism, in that it generally uses a single methodor class of methods on small subsets of earthquakes which are all in similar geographical or tectonic settings. In my DPhil, I will apply a variety of methods to a large dataset spanning magnitudes, mechanisms andtectonic settings.

平均每年约有14万次可探测到的地震，其中约15次发展为7级或以上。地震发生后，我们可以简单地计算出最终震级，但不清楚地震在破裂结束前是否“知道”其最终震级。如果成核和早期破裂的特征使我们能够确定地震的震级，我们说成核是确定的(1)。在过去，我们已经应用了许多不同的方法来理解这种范式在多大程度上是正确的。然而，我已经确定了现有决定论工作的一个关键限制，即它通常使用单一方法或一类方法来研究位于相似地理或构造环境中的小地震子集。在我的博士学位中，我将应用各种方法来处理大型数据集，包括震级、机制和构造设置。