Origin of continental margin bedforms: slides or drift deposits, a rock magnetic approach

提供资金以解决关于加州海岸外大陆边缘平台的起源的争议，该平台构成了加利福尼亚州海岸外的洪堡滑坡特征。以前的工作人员使用地震反射和多波束声纳数据将它们解释为滑坡或漂流沉积。PIS将试图利用现有的沉积物岩心解决这一问题，并应用海洋沉积物的磁化率各向异性(AMS)分析来确定一些大陆边缘沉积的性质(滑动沉积与床型)。虽然AMS方法已被证明可以区分坍塌和未变形的沉积物，但该方法尚未应用于来源不明的海底结构。

Funds are provided to resolve a controversy about the origin of the continental margin bedforms comprising the "Humboldt slide" feature off the California coast. Previous workers using seismic reflection and multibeam sonar data have interpreted them as either landslide or drift deposits. The PIs will attempt to resolve the question by using existing sediment cores and apply anisotropy of magnetic susceptibility (AMS) analysis of marine sediment to determine the nature of some continental margin deposits (slide deposit vs. bedforms). Though it has been demonstrated that the AMS method can distinguish slumps from un-deformed sediment, this method has not yet been applied to seafloor structures of unknown origin.