Coring in San Francisco Bay to Obtain A Record of Paleo-Streamflow from the Last Interglacial

题目：在旧金山湾取芯获取末次间冰期古水流记录SGER奖支持取芯和对取芯沉积物的初步测年和分析，并检验利用末次间冰期河口沉积物的可行性，从而得出旧金山湾古水流和环境变化的记录。最近利用沉积物岩心中软体动物化石壳的同位素组成对旧金山湾区古盐度进行的研究，揭示了全新世晚期在十年至百年时间尺度上流入的显著变化。盐度趋势表明，较长时期比现在潮湿得多，而另一些时期则干燥得多。一项高分辨率的研究对于探测海湾与气候波动有关的年代际到世纪尺度的变化非常重要。

AbstractATM-9908416Ingram, BonnyeUniversity of California, BerkleyTitle: Coring in San Francisco Bay to Obtain A Record of Paleo-Streamflow from the Last InterglacialThis SGER award supports coring and preliminary dating and analysis of cored sediments, and to test the feasibility of using last interglacial estuarine sediments, and to derive a record of paleo-streamflow and environmental change in San Francisco Bay. Recent investigations of San Francisco Bay paleosalinity using isotopic compositions of fossil mollusk shells from sediments cores, reveal significant variations in inflow on decadal-to century-time scales during the late Holocene. The salinity trends indicate that extended periods were much wetter, and others much drier, than the present time. A high-resolution study is important to detect decadal- to century-scale changes in the Bay related to climate fluctuations.