Determination of Physical Properties of Oceanic Sediments From ODP Well Logs and Their Relationship to Diagenesis

根据这项建议，我们打算研究物理 海底沉积物的性质及其与 它们形成和进化的过程。 的 这些沉积物的性质将主要从 测量了在巡航期间钻探的威尔斯井 大洋钻探计划。 如果可能的话，我们还将直接 对这些沉积物的任何实际样品进行实验室测量 在钻井过程中回收。 该提案涉及三个具体问题 工作任务：1）分析现有的数据集收集过程中， 大洋钻探计划和以前的深海钻探计划 并在未来的ODP巡航中收集更多数据。 这些数据 将分析组，以获得剪切波速度的 沉积物 2)改进我们获得剪切波速度的方法 全波形声波测井资料的沉积物 收集。 这涉及到提高速度和准确性， 我们的计算，更好的信号处理技术，以减少 数据中的噪声，以及声波模型的改进 在这些沉积物中传播。 3)研究这些沉积物， 实验室，只要有可能。 这些研究将 包括在高功率扫描下检查样品 用电子显微镜观察它们的结构和组成， 直接测量剪切波速度和其他 物理特性，将其与 研究这些数据如何与现有理论相吻合 关于这些沉积物的形成和演化，如果 因此，有必要发展关于这些过程的新理论。

Under this proposal, we intend to study the physical properties of ocean bottom sediments and their relationship to the processes by which they were formed and evolved. The properties of these sediments will be mostly obtained from measurements made down the wells drilled during cruises of the Ocean Drilling Program. If possible, we will also make direct laboratory measurements on any actual samples of these sediments recovered during drilling. This proposal involves three specific work tasks: 1) Analyze existing data sets collected during the Ocean Drilling Program and the previous Deep Sea Drilling Project and collect further data in future ODP cruises. These data sets will be analyzed to obtained the shear wave velocity of the sediments. 2) Refine our method of obtaining shear wave velocity of the sediments from the full waveform acoustic logging data collected. This involves increasing the speed and accuracy of our calculations, better signal processing techniques to reduce noise in the data, and improvements in the model of sound wave propagations in these sediments. 3) Study these sediments in the laboratory, whenever it is possible to do so. These studies will involve inspecting the samples under a high power Scanning Electron Microscope to find out their structure and composition, making direct measurements of shear wave velocity and other physical properties, comparing them to measurements made in the well, examining how these data fit into existing theories about the formation and evolution of these sediments, and, if necessary, developing new theory about these processes.