Assessing Volcanic Construction Processes at Shatsky Rise from 3-D tomographic imaging

通过 3D 断层扫描成像评估沙茨基隆起的火山构造过程

• 批准号: 1060850
• 负责人: Jun Korenaga
• 金额: $ 8.49万
• 依托单位: Yale University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2011
• 资助国家: 美国
• 起止时间: 2011-04-01 至 2013-03-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1060850&HistoricalAwards=false
• 关键词: Assessing; Volcanic; Construction; Processes; Shatsky

Funds are provided to extend a previously funded experiment of a seismic refraction study on Shatsky Rise from 2 to 3 dimensions by incorporating all of the available shots from the seismic refraction and MCS reflection surveys to image the interior volume of Shatsky Rise at TAMU Massif by 3D traveltime tomography. With this new information, the PI hopes to be able to better distinguish the presence of internal 3D structures. Shatsky Rise is considered to be a high-priority oceanic LIP target because it was formed at a time of frequent magnetic polarity reversals just prior to the long Cretaceous Normal period during which many later Pacific oceanic plateaus formed; studying Shatsky Rise thus allows us to better constrain its emplacement history.Broader Impacts: Broader impacts include the completion of the originally proposed 3D work (that was put at risk due to the death of a co-PI at LDEO), which will make it more useful to the geosciences community. The added task of the web-based interaction capability to be made available at large is also a good complement to the program and will also extend the usefulness of the results to the wider community. The award will support a female co-PI.

提供资金将以前资助的Shatsky Rise地震折射研究实验从二维扩展到三维，方法是将地震折射和MCS反射勘测的所有可用镜头合并，通过三维走时层析成像术对TAMU地块的Shatsky Rise内部体积成像。有了这些新信息，PI希望能够更好地区分内部3D结构的存在。沙茨基海隆被认为是一个高优先级的海洋LIP目标，因为它是在漫长的白垩纪正常期之前频繁的磁极反转时期形成的，在此期间，许多后来的太平洋高原形成;研究沙茨基海隆因此使我们能够更好地限制其侵位历史。更广泛的影响包括完成最初提议的3D工作（由于LDEO的一位共同PI的死亡而处于危险之中），这将使其对地球科学界更有用。增加的网络互动能力任务也是对该方案的一个很好的补充，也将使成果对更广泛的社区有用。该奖项将支持一名女性共同PI。