Climate Records from Corals in the Central and Western Sectors of the Tropical South Pacific

热带南太平洋中西部地区珊瑚的气候记录

• 批准号: 9818005
• 负责人: Gerard Wellington
• 金额: $ 1.81万
• 依托单位: University of Houston
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1999
• 资助国家: 美国
• 起止时间: 1999-01-01 至 1999-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9818005&HistoricalAwards=false
• 关键词: Climate; Records; Corals; Central; Western

AbstractATM-9818005Wellington, Gerald M.University of HoustonTitle: Climate Record from Corals in the Central and Western Sectors of the Tropical South PacificThe tropical South Pacific region has only been sparsely sampled for annually resolved paleoclimatic records of the last several centuries. Historical records of climate in this region are also relatively sparse. This region is however dramatically effected by the interannual El Nino Southern Oscillation (ENSO) system, and possibly by decadal-scale ocean-atmosphere variability. This award supports the analysis of multicentury coral cores from Fiji and Rarotonga in the western and central sectors of the South Pacific. Both sites are positioned near the southern edge of the Pacific warm pool within the westward flowing South Equatorial Current, and in the region of the South Pacific Convergence Zone (SPCZ). This project will isotopically analyze the upper 150 years of coral record from both sites to examine ENSO-band and decadal variability in these South Pacific gyre locations.

热带南太平洋中部和西部珊瑚的气候记录过去几个世纪以来，热带南太平洋地区的年度古气候记录一直很稀少。关于该地区气候的历史记录也相对较少。然而，该区域受到年际厄尔尼诺南方涛动(ENSO)系统的严重影响，可能还受到十年尺度海洋-大气变化的影响。该奖项支持对南太平洋西部和中部来自斐济和拉罗通加的多中心珊瑚岩芯的分析。这两个地点都位于西向南赤道流中的太平洋暖池南缘附近，以及南太平洋辐合带(SPCZ)区域。该项目将对这两个地点近150年的珊瑚记录进行同位素分析，以检查这些南太平洋环流地区的ENSO波段和年代际变化。