Climatic Change in the ENSO (El Nino-Southern Oscillation) and Lower-frequency Bands, Northeast Pacific Continential Margin

这项研究的目的是确定风应力、上升流和太平洋风暴气旋生成的替代指标的频率、相关性和阶段关系，以及碳和氧同位素的相关变化。这些变化将通过空气变色谱和加速器质谱14-C测年得到及时修复。在加利福尼亚州近海的大陆斜坡上新发现的各种沉积物包含了气候变化的证据，其频率范围从一年到几千年不等。很少有古气候记录可以提供关于厄尔尼诺-南方涛动2至10年时间尺度上发生的变化的信息。这样的记录可能存在于加州-俄勒冈大陆边缘的层状沉积物中。安德森和加德纳将利用这些沉积物在这些短时间尺度上重建晚更新世和全新世的气候变异性历史，这一努力与气候动力学计划和突然气候变化倡议直接相关。

The objective of this research is to determine the frequency, associations, and phase relationships of proxy indicators of wind stress and upwelling and Pacific storm cyclogenesis as well as associated changes in carbon and oxygen isotopes. These variations will be fixed in time with the air of varves and accelerator mass spectroscopy 14-C dating. Newly discovered varved sediments on the continental slope off California contain evidence of climatic variation across a frequency spectrum ranging from one to several thousand years. There are few paleoclimatic records that can provide information as to changes occurring on the 2 to 10 year timescale of the El Nino - Southern Oscillation. Such a record may exist in the laminated sediments that occur on the California-Oregon continental margin. Anderson and Gardner will use these sediments to reconstruct the late Pleistocene and Holocene history of climate variability on these short timescales, an effort of direct interest to the Climate Dynamics Program and the Abrupt Climate Change initiative.