Antarctic Marine Heat Flow

我们对南极板块构造演化的认识取得了重大进展。古地磁数据、海洋磁异常识别、地球卫星导出的构造线、热流导出的海底年龄以及围绕三联点的板块运动的数学解，都有助于为环南极地区的构造演化提供一个更好的模型。尽管如此，关于南极大陆边缘中生代至近代构造演化的主要问题仍然存在，这些问题可以通过热流测量来解决。该奖项支持对热流可以解决的构造问题的研究，确定西南极半岛末端鲍威尔盆地的年龄及其与德雷克海峡开放的关系。具体来说，热流测量将用于研究鲍威尔盆地的地壳伸展的年龄和模式，在这里，标准的年龄测定是失败的，热流是唯一可以用来确定其开放日期的方法。

Major progress has been made with respect to our understanding of the tectonic evolution of the Antarctic Plate. Paleomagnetic data, marine magnetic anomaly identifications, Geosat-derived tectonic lineations, heat flow derived seafloor ages and mathematical solutions for plate motions around triple junctions have all contributed to a better model for the tectonic evolution of the circum- Antarctic region. Even so, major problems still exist with respect to the Mesozoic to Recent tectonic evolution of the Antarctic continental margin which can be tackled using heat flow measurements. This award supports the study of a tectonic problem that heat flow can address, the determination of the age of the Powell Basin at the end of the West Antarctic Peninsula and its relationship to the opening of Drake's Passage. Specifically, heat flow measurement will be used to study the age and mode of crustal extension of the Powell Basin, where standard age determination fails and heat flow is the only method that can be used to date its opening.