Scholarlink

<p>The release of accumulated stress through earthquakes is known to devote to the mud volcanism occurrence, which may in turn affect subsequent regional seismicity. Mud volcanoes have been observed on the northeast continental margin of the South China Sea as well. Based on the mud volcanoes and earthquakes catalogue, we measured the spatial and temporal distribution of <i>z</i> and <i>b</i> values, to explore the geodynamic process of the repeated eruptions of mud volcanoes influence on the regional seismicity. The results suggest a close correlation between the <i>b</i>–<i>z</i> values and mud volcanism occurrence in the SW Taiwan. Generally, the <i>z</i>-value anomalies in where the mud volcanoes eruptions show unchanged negative values and indicate seismic quiescence before a big earthquake, whereas the b-values often show periodicity fluctuations around the value of 0.5. This may indicate a mutual triggering relationship between the mud volcanoes and earthquakes. We infer that mud volcano eruptions help to partition and release part of the regional stress accumulation from the seismogenic structures, thus balancing the local stress and mitigating large-magnitude seismicity occurring probability.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Triggering Relationship between Mud Volcanoes and Seismicity: Implications from Offshore Southwest Taiwan, China

  • 期刊论文

  • 发表日期：

    2025年6月17日

查看全文
  • Gege Hui

摘要

The release of accumulated stress through earthquakes is known to devote to the mud volcanism occurrence, which may in turn affect subsequent regional seismicity. Mud volcanoes have been observed on the northeast continental margin of the South China Sea as well. Based on the mud volcanoes and earthquakes catalogue, we measured the spatial and temporal distribution of z and b values, to explore the geodynamic process of the repeated eruptions of mud volcanoes influence on the regional seismicity. The results suggest a close correlation between the b–z values and mud volcanism occurrence in the SW Taiwan. Generally, the z-value anomalies in where the mud volcanoes eruptions show unchanged negative values and indicate seismic quiescence before a big earthquake, whereas the b-values often show periodicity fluctuations around the value of 0.5. This may indicate a mutual triggering relationship between the mud volcanoes and earthquakes. We infer that mud volcano eruptions help to partition and release part of the regional stress accumulation from the seismogenic structures, thus balancing the local stress and mitigating large-magnitude seismicity occurring probability.