Acquisition of a new stable isotope mass spectrometer

0926503斯瓦特该奖项是根据2009年美国复苏和再投资法案（公法111-5）资助。 赠款将用于支持Rosenstiel海洋大气科学学院海洋地质和地球物理系购置一台新的稳定同位素比质谱仪（SIRMS - Thermo MAT 253），以取代现有的Finnigan-MAT 251（1985年老式）。 SIRMS将主要用于分析碳酸盐中的稳定同位素碳和氧，但也将用于分析天然沃茨和有机物中的稳定同位素。 MAT 253是一种大半径磁铁、高压源仪器，它还具有分析二氧化碳同位素的能力，以研究古温度测量的新代理。 PI打算在未来探索这种能力。 新的SIRMS将立即支持NSF资助的古气候学和古海洋学研究，包括基于台地碳酸盐的碳同位素组成的中新世海平面历史研究，对Cariaco盆地的纹状沉积物中高保真记录的晚更新世热带气候变化的高分辨率研究，以及对不同海水pCO 2的珊瑚钙化率的研究。

0926503SwartThis award is funded under the American Recovery and Reinvestment Act of 2009 (Public Law 111-5). Granted funds will support acquisition of a new stable isotope ratio mass spectrometer (SIRMS - Thermo MAT 253) to replace an existing Finnigan-MAT 251 (vintage 1985) in the Department of Marine Geology and Geophysics at the Rosenstiel School of Marine & Atmospheric Sciences. The SIRMS will largely be dedicated to the analysis of stable isotopes carbon and oxygen in carbonates but also will be used for analysis of stable isotopes in natural waters and organics. The MAT 253, a large radius magnet, high voltage source instrument, also offers the capability to analyze isotopologues of carbon dioxide to investigate new proxies for paleothermometry. The PIs intend to explore this capability in the future. The new SIRMS will immediately support NSF funded research in paleoclimatology and paleoceanography including studies of Miocence sea level history based on the carbon isotopic composition of platform carbonates, high resolution studies of late Pleistocene tropical climate variability recorded with high fidelity in the varved sediments of the Cariaco Basin and studies of coral calcification rates in response to varying sea water pCO2.