标题： 日冕物质抛射中的湍流、间歇性及跨尺度能量传输 显示英文标题

标题： Turbulence, intermittency and cross-scale energy transfer in an interplanetary coronal mass ejection

摘要： 美国宇航局的Wind航天器在2014年9月12日至14日观测到一次行星际日冕物质抛射（ICME）过境前、过境期间和过境后进行的太阳风测量已被用于研究磁流体力学（MHD）湍流的几个特性。 获得了磁场、速度和质子密度测量值的谱指数和平度标度指数，并提供了ICME及其周围不同亚区域湍流特征的标准描述。 随后在同一亚区域内验证了各向同性、不可压缩MHD湍流的三阶矩标度律，这证实了ICME等离子体中湍流的充分发展性质。 还估算了每个ICME亚区域和周围太阳风中的能量传递率。 在ICME鞘层内发现了一个异常高的值，伴随增强的间歇性，可能与ICME到达时的强大能量注入有关。 显示英文摘要

摘要： Solar wind measurements carried out by NASA's Wind spacecraft before, during and after the passing of an interplanetary coronal mass ejection (ICME) detected on 12-14 September 2014 have been used in order to examine several properties of magnetohydrodynamic (MHD) turbulence. Spectral indices and flatness scaling exponents of magnetic field, velocity and proton density measurements were obtained, and provided a standard description of the characteristics of turbulence within different sub-regions of the ICME and its surroundings. This analysis was followed by the validation of the third-order moment scaling law for isotropic, incompressible MHD turbulence in the same sub-regions, which confirmed the fully developed nature of turbulence in the ICME plasma. The energy transfer rate was also estimated in each ICME sub-region and in the surrounding solar wind. An exceptionally high value was found within the ICME sheath, accompanied by enhanced intermittency, possibly related to the powerful energy injection associated with the arrival of the ICME.