Collaborative Research: Geophysical Investigation of En Echelon Cracks along the Outer Shelf off Virginia/North Carolina - Implications for Slope Stability

合作研究：弗吉尼亚州/北卡罗来纳州外陆架沿线梯队裂缝的地球物理调查 - 对斜坡稳定性的影响

• 批准号: 9900351
• 负责人: John Goff
• 金额: $ 6.03万
• 依托单位: University of Texas at Austin
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1999
• 资助国家: 美国
• 起止时间: 1999-07-01 至 2002-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9900351&HistoricalAwards=false
• 关键词: Collaborative; Research; Geophysical; Investigation; En

The PIs will study the enechelon cracks along the outer shelf of Virginia and North Carolina in detail during a two-week geological/geophysical survey cruise with a deep-towed high-resolution vertical-incidence sonar system. Accurate mapping of these features and their subsurface geometry will help evaluate the hypothesis that the crack system indicates nascent slope failure along the shelf edge. This data, as well as data released by NOAA on gridded bathymetry, will provide evidence of past catastrophic failure and will lead to a better understanding of the role of these cracks in mass wasting and subsequent canyon evolution.

PIS将在为期两周的地质/地球物理调查巡游中详细研究沿弗吉尼亚和北卡罗来纳州外架的Enechelon裂缝，并具有深层高分辨率的垂直垂直声纳系统。这些特征及其地下几何形状的准确映射将有助于评估裂纹系统表明沿架子边缘的新生斜率故障的假设。这些数据以及NOAA在网格测深的测定法上发布的数据将提供过去的灾难性失败的证据，并将更好地理解这些裂纹在质量浪费和随后的峡谷进化中的作用。