Collaborative Research: Tectonics and Sea Level History from Submerged Coal Platforms in the Huon Gulf, Papua New Guinea

合作研究：巴布亚新几内亚休恩湾水下煤炭平台的构造和海平面历史

• 批准号: 9907869
• 负责人: Christina Gallup
• 金额: $ 26.76万
• 依托单位: University of Minnesota-Twin Cities
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2001
• 资助国家: 美国
• 起止时间: 2001-01-15 至 2004-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9907869&HistoricalAwards=false
• 关键词: Collaborative; Research; Tectonics; Sea; Level

The PIs will expand their previous study of the subsidence rates in a co1lisional setting in the Huon Gulf of Papua New Guinea. The new study will provide tighter constraints on the short term subsidence rates, and lead to a better understanding of the relationships between uplift, subsidence and convergence in a collisional setting, as well as better chronology for sea-level changes for the last 400 k. years. The PIs will obtain bathymetric images of the drowned coral platforms first with the SeaBeam and later with DSL120 with a resolution of several meters. The reefs will be sampled with an ROV system to obtain Th230 dates. Observed rates of subsidence will be compared to model elastic flexural response to collisional loads.

PI将扩展他们先前对巴布亚新几内亚休恩湾的沉降速率的研究。 这项新研究将对短期沉降速率提供更严格的限制，并导致更好地理解碰撞环境中隆起，沉降和收敛之间的关系，以及过去400 k海平面变化的更好年表。年 PI将首先使用SeaBeam获取淹没珊瑚平台的测深图像，然后使用分辨率为数米的DSL120。 将用一个生物标志物系统对珊瑚礁进行取样，以获得Th230日期。 将观察到的下沉速率与模型对碰撞载荷的弹性弯曲响应进行比较。