MRI: Integrated Sampling and Analysis Platform for the Investigation of Lake Geochemistry Over a Range of Temporal and Spatial Scales
MRI:用于研究一系列时空尺度的湖泊地球化学的集成采样和分析平台
基本信息
- 批准号:0115900
- 负责人:
- 金额:$ 9.97万
- 依托单位:
- 依托单位国家:美国
- 项目类别:Standard Grant
- 财政年份:2001
- 资助国家:美国
- 起止时间:2001-09-01 至 2003-08-31
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
0115900KingThis Major Research Instrumentation (MRI) award will allow the investigators to assemble a cost-effective and technically sophisticated instrument platform for coordinated biogeochemical investigations in lakes. The platform is based in a Godfrey Marine pontoon boat equipped with: four on-line FIA-based instruments (Fe, H2O2, and nutrient analysis), CTD (temperature, depth, conductivity, pH, eH, O2, fluorescence), GPS navigation, and a vibracoring system. This instrument provides the capability to measure multiple geochemical parameters in the water column and sediments over a range of scales - both temporal (seconds to centuries) and spatial (cm to km). Fieldwork will be concentrated in the Belgrade Lakes, where both general types of Maine lakes coexist and can be compared. The integrated sampling and analysis platform will be used to investigate the spatial and temporal distribution of iron, H2O2,, NO3-, and PO43- in these lakes. Critical to this investigation is an estimate of nutrient inputs from ground waters and historical burial of nutrients as it pertains to internal nutrient loading. Fluid flow through the system will be modeled using Visual MODFLOW software calibrated against actual physical and chemical fluid flow over seasonal, and watershed scales. Vibracores of watershed sediments will be obtained using the platform. Using standard sedimentological techniques a detailed historical record of the transition from marine to freshwater conditions will be developed. Stratigraphic elemental analyses across the basins, reflecting long-term temporal and spatial changes, will be mapped and assessed. Using these data, coupled with similar chemical data obtained on a daily, weekly, monthly, and yearly basis, lake geochemical dynamics will be evaluated over several scales.Student participation is an integral part of this study. Student research assistants will help with all aspects of the project during the summer months. In addition, approximately 40 students a year will actively use the integrated sampling and analysis platform as part of two Geology and two Chemistry courses. Analysis of data over a range of space and time will be used to draw connections between the research projects. Such research efforts will provide the linkages between what students generally consider unrelated disciplines, helping them to recognize that Earth processes are system processes.***
0115900 King这一重大研究仪器(MRI)奖将使调查人员能够组装一个具有成本效益和技术先进的仪器平台,用于协调湖泊的地球化学调查。 该平台位于一艘戈弗雷海洋浮船上,配备有:四个在线FIA仪器(Fe、H2 O2和营养分析)、CTD(温度、深度、电导率、pH、eH、O2、荧光)、GPS导航和振动仪系统。 该仪器能够测量水柱和沉积物中的多种地球化学参数,时间尺度(秒至世纪)和空间尺度(厘米至公里)都有。 实地考察将集中在贝尔格莱德湖,在那里两个一般类型的缅因州湖泊共存,可以比较。 利用该集成采样分析平台,研究了这些湖泊中铁、H2 O2、NO3-、PO 43-的时空分布特征。 这项调查的关键是从地下沃茨和历史埋藏的营养物质,因为它涉及到内部营养负荷的营养输入的估计。 将使用Visual MODFLOW软件对通过系统的流体流量进行建模,该软件针对季节和流域尺度上的实际物理和化学流体流量进行校准。 将使用该平台获得流域沉积物的振动器。 将利用标准的沉积学技术,详细记录从海洋环境向淡水环境过渡的历史。 将绘制和评估反映长期时空变化的各盆地地层元素分析。 使用这些数据,再加上类似的化学数据,每天,每周,每月和每年获得的基础上,湖泊地球化学动力学将在几个尺度进行评估。学生参与是本研究的一个组成部分。 学生研究助理将在夏季帮助项目的各个方面。 此外,每年约有40名学生将积极使用综合采样和分析平台,作为两门地质学和两门化学课程的一部分。 对一系列空间和时间的数据分析将用于绘制研究项目之间的联系。 这种研究工作将提供学生通常认为不相关的学科之间的联系,帮助他们认识到地球过程是系统过程。
项目成果
期刊论文数量(0)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
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D. Whitney King其他文献
Persistence of iron(II) in surface waters of the western subarctic Pacific
亚北极西部太平洋地表水中铁(II)的持久存在
- DOI:
- 发表时间:
2008 - 期刊:
- 影响因子:0
- 作者:
Eric G. Roy;Mark L. Wells;D. Whitney King - 通讯作者:
D. Whitney King
D. Whitney King的其他文献
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{{ truncateString('D. Whitney King', 18)}}的其他基金
Collaborative Research: A Nanostructure Sensor for Measuring Dissolved Iron and Copper Concentrations in Coastal and Offshore Seawater
合作研究:用于测量沿海和近海海水中溶解铁和铜浓度的纳米结构传感器
- 批准号:
0825762 - 财政年份:2008
- 资助金额:
$ 9.97万 - 项目类别:
Standard Grant
(SGER): Exploratory Geochemistry Field Program for Minority Students
(SGER):少数民族学生探索性地球化学实地计划
- 批准号:
0220224 - 财政年份:2002
- 资助金额:
$ 9.97万 - 项目类别:
Standard Grant
ICP Emission Spectroscopy as a Teaching Tool for Chemistry, Environmental Science, and Geology Laboratories at Colby College
ICP 发射光谱作为科尔比学院化学、环境科学和地质实验室的教学工具
- 批准号:
9052111 - 财政年份:1990
- 资助金额:
$ 9.97万 - 项目类别:
Standard Grant
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