Collaborative Research: Seismogenesis of the Middle America Trench at the Nicoya Peninsula over multiple seismic cycles

合作研究：尼科亚半岛中美洲海沟多个地震周期的地震成因

• 批准号: 0948312
• 负责人: Jeffrey Marshall
• 金额: $ 9.02万
• 依托单位: Cal Poly Pomona Foundation, Inc.
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2010
• 资助国家: 美国
• 起止时间: 2010-01-15 至 2012-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0948312&HistoricalAwards=false
• 关键词: Collaborative; Research; Seismogenesis; Middle; America

Intellectual MeritThe proposed work would use onshore geologic evidence from the Nicoya Peninsula to address basic questions related to subduction along a 100-km-long part of the Middle America Trench. The work includes the following components: (1) Paleoseismology: This part of the project will investigate pre-historic earthquake size and recurrence using the stratigraphy and paleoecology of an estuary. (2) Paleogeodesy: As part of the paleoseismic investigation, the study would investigate relative sea level change on the Nicoya Peninsula to assess patterns of vertical ground motion during intervals between earthquakes. (3) Morphotectonics and long-term uplift: The study will test the relationship of long-term deformation to earthquake generation. All of these techniques will be combined to define the pre-historic rupture behavior along the subduction zone.Broader ImpactsThis project includes the training of a Ph.D. student. Undergraduate students will participate in the field program. There is a large component of international collaboration with colleagues in Costa Rica. A workshop for students from the US and Costa Rica will be organized, and a field school for the students will be held at the research site. The study is important for understanding seismic hazards in Costa Rica.

知识分子优点拟议的工作将利用尼科亚半岛的陆上地质证据来解决与中美洲沟渠100公里长的俯冲有关的基本问题。这项工作包括以下组成部分：（1）古介质学：该项目的这一部分将使用河口的地层学和古生物学研究史前地震的大小和复发。 （2）古杂志：作为古糖震动研究的一部分，该研究将研究尼科亚半岛的相对海平面变化，以评估地震之间间隔期间垂直地面运动模式。 （3）形态学和长期隆升：该研究将测试长期变形与地震产生的关系。 所有这些技术都将合并以定义俯冲带沿线的史前破裂行为。该项目包括培训博士学位。学生。本科生将参加现场课程。 哥斯达黎加与同事的国际合作有很大一部分。 将组织来自美国和哥斯达黎加的学生的研讨会，并将在研究网站举行一所学生的野外学校。 该研究对于理解哥斯达黎加的地震危害很重要。