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: 9808537
• 负责人: Ellen Druffel
• 金额: $ 2.41万
• 依托单位: University of California-Irvine
• 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=9808537&HistoricalAwards=false
• 关键词: SGER; Carbon; Isotopes; Particulate; Dissolved

9808537 Druffel 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.

小行星9808537 摘要 作为研究1997-1998年厄尔尼诺现象对加州附近沃茨碳通量影响的快速反应努力的一部分，主要研究人员E。Drueland和J. Bauer将与Ken Smith博士合作测量收集的样本中的碳同位素。 史密斯博士在该小组先前占据的一个地点使用停泊的时间序列沉积物收集器记录了深海沉积物通量，为期7年。 据推测，目前的厄尔尼诺现象将显着改变碳通量，因此有一个显着的影响有机碳（OC）在水体中的循环和OC的海底输送，从而底栖生物群落的反应。1997-1998年的厄尔尼诺现象被认为是本世纪的重大事件，不应错过收集和分析这些独特样本的机会。 这些数据将为海洋有机碳循环提供新的见解，为厄尔尼诺现象对海底生物群落的影响提供重要的制约因素，并有助于更好地了解和规划今后的厄尔尼诺现象研究。 由于在正在进行的厄尔尼诺季节需要快速反应来启动这项研究，SGER过程被用来继续时间序列记录到1998年，并进行沉积物群落反应的研究（Ken Smith，首席PI OCE-9807103）。 Drugs和Bauer博士将使用14 C和13 C同位素以及颗粒、溶解和下沉OC的测量来评估厄尔尼诺对这些异常条件下OC分布和周转的影响。