SGER: Carbon Isotopes in Particulate and Dissolved Organic Carbon in the NE Pacific during the ENSO Event of 1997-98

SGER：1997-98 年 ENSO 事件期间东北太平洋颗粒物和溶解有机碳中的碳同位素

• 批准号: 9808538
• 负责人: James Bauer
• 金额: $ 2.59万
• 依托单位: College of William & Mary Virginia Institute of Marine Science
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1998
• 资助国家: 美国
• 起止时间: 1998-03-15 至 2000-02-29
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9808538&HistoricalAwards=false
• 关键词: SGER; Carbon; Isotopes; Particulate; Dissolved

9808538 Bauer ABSTRACT As part of a rapid response effort to study the consequences of the 1997-1998 El Nino on carbon fluxes in the waters off of California, the Principal Investigators, Drs. E. Druffel and J. Bauer, will measure carbon isotopes in samples to be collected in collaboration with Dr. Ken Smith. A record of deep ocean sediment fluxes has been initiated by Dr. Smith using moored time-series sediment traps at a site previously occupied by this group for a period of 7 years. It is hypothesized that the current El Nino will dramatically alter carbon fluxes, and hence have a significant impact on the cycling of organic carbon (OC) in the water column and the delivery of OC to the seafloor and hence the response of the benthic community. The 1997-1998 El Nino is considered to be a major event within this century and the opportunity should not be missed to collect and analyze these unique samples. Such data would provide new insights into OC cycling, provide important constraints on the effects of El Nino on the benthic communities, and would allow for improved understanding and planning of future El Nino studies. Due to the rapid response required to initiate this study during the ongoing El Nino season, the SGER process is being used to continue the time-series record though 1998 and to conduct studies of sediment community response (Ken Smith, lead PI OCE-9807103). Drs. Druffel and Bauer will use 14C and 13C isotopes and measurements of particulate, dissolved and sinking OC to evaluate the effect of the El Nino on OC distributions and turnover under these anomalous conditions.

9808538鲍尔摘要作为研究1997年至1998年厄尔尼诺现象对加利福尼亚州附近水域碳通量影响的快速反应努力的一部分，首席研究员E.Druffel博士和J.Bauer博士将与Ken Smith博士合作测量样本中的碳同位素。史密斯博士利用系泊的时间序列沉积物捕捉器在该小组以前占据了7年的地点开始了深海沉积物通量的记录。据推测，当前的厄尔尼诺现象将极大地改变碳通量，从而对水柱中有机碳的循环和有机碳向海底的输送产生重大影响，从而影响底栖生物群落的反应。1997-1998年厄尔尼诺现象被认为是本世纪内的重大事件，不应错过收集和分析这些独特样本的机会。这些数据将为有机碳循环提供新的见解，为厄尔尼诺对海底群落的影响提供重要的制约，并将有助于更好地了解和规划未来的厄尔尼诺研究。由于在正在进行的厄尔尼诺季节启动这项研究需要快速反应，正在使用SGER过程将时间序列记录延续到1998年，并进行沉积物社区反应研究(Ken Smith，牵头PiOCE-9807103)。Druffel博士和Bauer博士将使用14C和13C同位素以及颗粒、溶解和下沉有机碳的测量来评估厄尔尼诺现象对这些异常条件下有机碳分布和周转的影响。