Relationship between subduction zone geometry, trench kinematics and great subduction earthquakes

俯冲带几何形状、海沟运动学与俯冲大地震之间的关系

• 批准号: DP0771823
• 负责人: A/Prof Wouter Schellart
• 金额: $ 45.62万
• 依托单位: Monash University
• 依托单位国家: 澳大利亚
• 项目类别: Discovery Projects
• 财政年份: 2007
• 资助国家: 澳大利亚
• 起止时间: 2007-03-01 至 2012-02-28
• 项目状态: 已结题
• 来源: https://dataportal.arc.gov.au/RGS/Web/Grants/DP0771823
• 关键词: Relationship; between; subduction; zone; geometry

The devastating Boxing Day 2004 earthquake near Sumatra and the four other largest earthquakes in recorded history all occurred along subduction zones. This research will compare the geodynamic setting of these subduction zones with those surrounding the Australian continent and assess whether the Australian subduction zones are capable of producing great earthquakes and tsunamis that might pose a risk for the east and northwest coast of Australia. Also, Eastern Australia is a composite of fossil arcs rich in ore deposits and the Tasman Sea region is composed of basins that host hydrocarbons, all of which formed by subduction processes. The proposed research will thus improve the basis for mineral and hydrocarbon exploration.

2004年节礼日苏门答腊附近的毁灭性地震和有记录以来的其他四次最大地震都发生在沿着俯冲带。这项研究将比较这些俯冲带与澳大利亚大陆周围的俯冲带的地球动力学背景，并评估澳大利亚俯冲带是否能够产生可能对澳大利亚东部和西北海岸构成风险的大地震和海啸。此外，澳大利亚东部是一个富含矿床的化石弧的复合体，塔斯曼海地区由容纳碳氢化合物的盆地组成，所有这些盆地都是由俯冲过程形成的。因此，拟议的研究将改善矿物和油气勘探的基础。