Collaborative Research: P2C2--A 5-million-year Record of Western Mediterranean Sea Level Variability

合作研究：P2C2——西地中海海平面500万年变化记录

• 批准号: 1602685
• 负责人: Victor Polyak
• 金额: $ 31.74万
• 依托单位: University of New Mexico
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2016
• 资助国家: 美国
• 起止时间: 2016-05-01 至 2020-04-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1602685&HistoricalAwards=false
• 关键词: Collaborative; Research; P2C2; million; year

This collaborative award generally aims to establish a new stable sea level site in Mallorca, Spain, through the study of phreatic overgrowths on speleothems (POS) from littoral caves. Specifically, the researchers aim to establish age control by precisely measuring overgrowths by Uranuium/Lead U/Pb dating to determine the timing, position, and duration of sea-level high stands in the western Mediterranean basin over the past 5 million years using cave deposits that grow exactly at sea level.Implications of sea-level reconstructions centered on the POS from this island's littoral caves are fundamental for understanding the glacial isostatic adjustment (GIA) in the western Mediterranean basin. The data generated by this research will better constrain estimates of Pliocene and early Pleistocene sea-level, without being plagued by the large uncertainties associated with proxies available for this time period.New data could be used to improve GIA corrections. This is important because current published sea level highstands during past interglacial climate are significantly above modern sea level and vary widely over time. The precision of such results are still controversial and accurate data to realistically evaluate potential sea level by the century's end is critical. This project involves training for several graduate and undergraduate students, outreach efforts in Mallorca and in Florida, production of a documentary film on the caves, and strong and meaningful international scientific collaborations.

这项合作奖通常旨在通过研究沿海洞穴中的speleothems（POS）的phreatic过度生长，在西班牙马洛卡建立一个新的稳定的海平面遗址。 具体而言，研究人员的目的是通过精确测量脉王/铅U/PB的过度生长来确定年龄控制的日期，以确定过去500万年的地中海盆地的海平面高位的时机，位置和持续时间，该洞穴在海上的水平上恰好在海平面上生长。地中海盆地西部的冰川等静态调节（GIA）。 这项研究产生的数据将更好地限制上新世和更新世海平面的估计，而不会受到此期间可用的代理相关的大型不确定性的困扰。新数据可用于改善GIA校正。 这很重要，因为在过去的冰川间气候下，当前已发表的海平面公共台值显着高于现代海平面，并且随着时间的流逝差异很大。 这种结果的精度仍然是有争议的，准确的数据，可以在本世纪结束时实际评估潜在的海平面。 该项目涉及对几位研究生和本科生的培训，在马洛卡和佛罗里达州的外展工作，在洞穴上制作纪录片，以及强大而有意义的国际科学合作。