U.S.-France Cooperative Research: Geomagnetic Paleointen- sities and Secular Variation from Dated Holocene/Late Pleistocene Lavas

该奖项将支持物理学的合作研究 俄勒冈州大学的Shaul Levi博士和 法国巴黎第六大学诺伯特·邦霍梅。 这些 调查人员在过去几年里合作， 全新世晚期古地磁联合研究 法国中部地块的更新世熔岩。 的 研究的主要目的是获得一个 地磁场全矢量表征 在古地磁学出现之前 数据通过测量古强度和古方向 过时的单位。 在这个项目中，研究人员将 继续这项研究，并扩大到其他地理 例如，在La Reunion。 地磁场的高分辨率描述 需要精确的和过时的磁性测量。 对地球磁场的认识 直接观测数据来自于 在适当年代的岩石中记录的磁性， 考古样本 在这个项目中，研究人员 建议利用数量虽少但不断增长的 全新世/晚更新世熔岩，以研究 地磁场远远超过了现有的古地磁场 数据 本研究的主要目的是确定 Chaine des的古老熔岩的古强度 Puys和伊斯基亚岛。 这项研究成果 将有助于更好地理解和描述 全新世/晚期完整的地磁矢量 更新世时期。

This award will support collaborative research in geophysics between Dr. Shaul Levi, University of Oregon and Dr. Norbert Bonhommet, University of Paris VI, France. These investigators have for the last few years cooperated in joint paleomagnetic research on dated Holocene/late Pleistocene lavas in the Massif Central, France. The primary objective of the research has been to obtain a complete vector characterization of the geomagnetic field for periods prior to the availability of archeomagnetic data by measuring paleointensities and paleodirections of the dated units. In this project, the investigators will continue this research and expand it to other geographical areas, such as, for example, La Reunion. High resolution description of the geomagnetic field requires accurate and well dated magnetic measurements. Knowledge of the geomagnetic field for times prior to direct observatory measurements comes from the study of remanent magnetism recorded in suitable dated rocks and archeological samples. In this project, the investigators propose to take advantage of the small but growing number of dated Holocene/late Pleistocene lavas to study the geomagnetic field well beyond the available archeomagnetic data. The major effort in this study will be to determine the paleointensities of the dated lavas of the Chaine des Puys and the Isle of Ischia. The results of this research will contribute to a better understanding and description of the complete geomagnetic vector for the Holocene/late Pleistocene period.