Statistical Estimates of Uplift from Stream Gradients and other Tectonically Sensitive Topographic Features

河流梯度和其他构造敏感地形特征的抬升统计估计

• 批准号: 9418681
• 负责人: Dorothy Merritts
• 金额: $ 7.35万
• 依托单位: Franklin and Marshall College
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1995
• 资助国家: 美国
• 起止时间: 1995-04-01 至 2000-03-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9418681&HistoricalAwards=false
• 关键词: Statistical; Estimates; Uplift; Stream; Gradients

9418681 Hesterberg This project will locate and quantify deformation due to past, relatively recent tectonic activity in areas of low relief, such as the New Madrid seismic zone, which are often located far from plate boundaries and may be overlain by thousands of meters of sediments. Previous geomorphic methods have had little success in the past; this project will develop and test new methods that are based on the observation that streams adjust their channels to external change by incising, aggrading, or altering their sinuosity. The method is a statistical one and relatively inexpensive. It uses topographic maps rather than field work. The results of this project will provide a useful reconnaisance tool for any low relief continental area subject to large earthquakes and will profoundly improve our understanding of active tectonics in the cratonic regions of continents.

9418681 Hesterberg 该项目将定位并量化低起伏地区过去和相对近期的构造活动造成的变形，例如新马德里地震带，这些地区通常远离板块边界，可能被数千米的沉积物覆盖。以前的地貌方法过去收效甚微。该项目将开发和测试新的方法，这些方法基于对河流通过切割、加剧或改变蜿蜒度来调整其渠道以适应外部变化的观察。 该方法是一种统计方法并且相对便宜。 它使用地形图而不是实地工作。该项目的结果将为任何遭受大地震的低起伏大陆地区提供有用的勘察工具，并将深刻提高我们对大陆克拉通地区活动构造的认识。