ROW: Environmental and Quaternary Geophysics of Mid- Atlantic Coastal Region

ROW：大西洋中部沿海地区的环境和第四纪地球物理学

• 批准号: 9010987
• 负责人: Susan McGeary
• 金额: $ 1.2万
• 依托单位: University of Delaware
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1990
• 资助国家: 美国
• 起止时间: 1990-08-15 至 1992-01-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9010987&HistoricalAwards=false
• 关键词: ROW; Environmental; Quaternary; Geophysics; Mid

The Delmarva Peninsula is a particularly appropriate location for a research program in Environmental and Quaternary Geophysics. The rise and fall of sea level during the Quaternary is abundantly evidenced in this area by relict strandlines and barrier-spit deposits from previous relative sea-level maxima and buried paleochannels of the Susquehanna and Delaware river systems from several relative sea-level minima. These features have been identified and mapped offshore and in the Chesapeake and Delaware Bays using marine seismic data. The continuation and geometry of these features on land can be estimated from well data where available but high-resolution seismic reflection data on land is required to accurately map them and to characterize their boundaries and internal structure in detail. The mapping and stratigraphic positioning of these features allow us to better reconstruct climatic change in the Quaternary and to understand the impact of sea-level rise or fall on coastal features. The paleochannels hold an additional interest environmentally, in that the coarse materials within the channels may act as preferred pathways for the transport of fluid media, including fluid contaminants.

德尔玛瓦半岛是一个特别合适的位置， 环境和第四纪地球物理学研究项目。 第四纪海平面的升降 在这一地区有大量的遗迹， 以前相对海平面最高值的障壁-吐出沉积物， 萨斯奎汉纳-特拉华州河埋藏古河道 几个相对海平面最低点的系统。 这些特征 已经在近海和切萨皮克被发现并绘制了地图 和特拉华州海湾。 继续 陆地上这些特征的几何形状可以通过井来估计 但高分辨率地震反射数据 在陆地上，需要准确地绘制它们的地图， 它们的边界和内部结构。 映射 这些特征的地层定位使我们能够 更好地重建第四纪的气候变化， 了解海平面上升或下降对沿海地区的影响 功能. 古河道也是 在环境上，因为通道内的粗物质 可以作为输送流体介质的优选路径， 包括流体污染物。