Response of Eolian and Associated Depositional Systems to Climate and Dynamic External Factors-Toward an Eolian Sequence Stratigraphic Model
风成及相关沉积系统对气候和动态外部因素的响应-风成层序地层模型
基本信息
- 批准号:9217803
- 负责人:
- 金额:$ 9.8万
- 依托单位:
- 依托单位国家:美国
- 项目类别:Continuing Grant
- 财政年份:1993
- 资助国家:美国
- 起止时间:1993-02-01 至 1995-01-31
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
Uncertainty in modeling the response of Eath environments to changing conditions such as global warming arises from a poor understanding of the dynamics of these environments. It is established that over the past 20,000 years the Sahara has undergone dramatic swings from more extensive and sand-sea devlopment than today to being vegetated with common lakes and rivers. While these swings correspond to Milankovitch cycles, our basis for understanding these in a process-reponse model has only recently begun to emerge. The area of the Sahara extending from the Atlas Mountains onto the Sahara Platform in Tunisia offers a microcosm of diverse environments, where deposits are housed in a subsiding trough. Remote sensing is first used to map present environments, recognize relict features, and locate specific depocenters for detailed field work. Field work involves the establishment of an unconformity-bounded stratigraphic framework for eolian, fluvial and lacustrine deposits in the area through field mapping of soil-geomorphic and stratigraphic relationships, facies analysis, and geophysical methods. Subsequent lab analysis involves the dating of the sequences so they can be correlated with climatic events. Because the response of eolian and associated depositional systems to climatic and other factors is the basis for sequence stratigraphy, the results are expected to help formulate a general process-response eolian sequence model that will have predictive capabilities with respect to changing external controls.
模拟Eath环境响应的不确定性 全球变暖等不断变化的条件是由贫困造成的。 了解这些环境的动态。 是 在过去的20,000年里,撒哈拉 经历了戏剧性的波动,从更广泛和沙海 比今天的发展,以植被与共同的湖泊, 河流 而 这些摆动对应于米兰科维奇周期, 我们在过程响应模型中理解这些的基础是 最近才开始出现。 撒哈拉沙漠的面积 从阿特拉斯山脉到突尼斯的撒哈拉台地 提供了一个不同环境的缩影, 安置在一个下沉的水槽里 遥感技术首先被用于测绘 呈现环境,识别残留特征, 具体的沉积中心进行详细的实地工作。 实地工作涉及 建立不整合界面地层 该区风成、河流和湖泊沉积的格架 通过土壤地貌和地层的实地测绘, 关系、相分析和地球物理方法。 随后的实验室分析涉及到序列的年代测定, 它们可以与气候事件相关。 由于响应 风成和相关沉积体系对气候和其他 因素是层序地层学的基础,其结果是 预计将有助于制定一个一般的过程,反应风成 序列模型将具有预测能力, 改变外部控制。
项目成果
期刊论文数量(0)
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Gary Kocurek其他文献
Another unique river: A consideration of some of the characteristics of the trunk tributaries of the Nile River in northwestern Ethiopia in relationship to their aquatic food resources
- DOI:
10.1016/j.jhevol.2014.03.008 - 发表时间:
2014-12-01 - 期刊:
- 影响因子:
- 作者:
John Kappelman;Dereje Tewabe;Lawrence Todd;Mulugeta Feseha;Marvin Kay;Gary Kocurek;Brett Nachman;Neil Tabor;Meklit Yadeta - 通讯作者:
Meklit Yadeta
Gary Kocurek的其他文献
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{{ truncateString('Gary Kocurek', 18)}}的其他基金
Role of Bedform Interactions and Boundary Conditions in Pattern Development
床型相互作用和边界条件在模式发展中的作用
- 批准号:
0921659 - 财政年份:2009
- 资助金额:
$ 9.8万 - 项目类别:
Standard Grant
COLLABORATIVE RESEARCH: Complexity and Paleodynamics of Natural Sand Dune Fields
合作研究:天然沙丘场的复杂性和古动力学
- 批准号:
0106603 - 财政年份:2001
- 资助金额:
$ 9.8万 - 项目类别:
Standard Grant
Collaborative Research: Micromechanics of Eolian Sand Dune Development: Computer Simulations and Field Experiments
合作研究:风成沙丘发育的微观力学:计算机模拟和现场实验
- 批准号:
9526708 - 财政年份:1996
- 资助金额:
$ 9.8万 - 项目类别:
Continuing Grant
U.S.-France Cooperative Research: Formation of a Modern Super Bounding Surface with Erg Migration: Archar Erg, Mauritania
美法合作研究:通过 Erg 迁移形成现代超级边界表面:Archar Erg,毛里塔尼亚
- 批准号:
8715034 - 财政年份:1988
- 资助金额:
$ 9.8万 - 项目类别:
Standard Grant
COLLABORATIVE RESEARCH: Correlation and Significance of Super Bounding Surfaces in Eolian Sandstones: Jurassic PageSandstone, Colorado Plateau
合作研究:风成砂岩中超边界面的相关性和意义:科罗拉多高原侏罗纪页砂岩
- 批准号:
8719972 - 财政年份:1988
- 资助金额:
$ 9.8万 - 项目类别:
Standard Grant
Eolian Compound Crescentic Dune (Draa) Dynamics
风成复合新月沙丘 (Draa) 动力学
- 批准号:
8706724 - 财政年份:1987
- 资助金额:
$ 9.8万 - 项目类别:
Standard Grant
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Dating eolian sediments using a portable OSL reader and standardised growth curves
使用便携式 OSL 读数器和标准化生长曲线测定风成沉积物的年代
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Constraining ages of eolian dunes from central Alberta using a portable OSL reader
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Bündelantrag PASADO-Support 3: Identification of eolian input at the Laguna Potrok Aike drill site, Patagonia
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