An empirical model of the global distribution of plasmaspheric hiss based on Van Allen Probes EMFISIS measurements

作者：JingZhi Wang,Qi Zhu,XuDong Gu,Song Fu,JianGuang Guo,XiaoXin Zhang,Juan Yi,YingJie Guo,BinBin Ni,Zheng Xiang

摘要：Using wave measurements from the EMFISIS instrument onboard Van Allen Probes,we investigate statistically the spatial distributions of the intensity of plasmaspheric hiss waves.To reproduce these empirical results,we establish a fitting model that is a thirdorder polynomial function of L-shell,magnetic local time(MLT),magnetic latitude(MLAT),and AE*.Quantitative comparisons indicate that the model’s fitting functions can reflect favorably the major empirical features of the global distribution of hiss wave intensity,including substorm dependence and the MLT asymmetry.Our results therefore provide a useful analytic model that can be readily employed in future simulations of global radiation belt electron dynamics under the impact of plasmaspheric hiss waves in geospace.

發文機構：Department of Space Physics Key Laboratory of Space Weather

關鍵詞：hissVanAllenProbesglobalmodel

分類號： O17[理學—基礎數學]