Does generation of magnetic storm depend on type of solar wind?
  The purpose of this work is to draw attention of readers to a problem of possible differences in generation of magnetic storms induced by various large scale solar wind (SW) streams: CIR, Sheath and ICME (including MC and Ejecta). Recently we showed that when using a modification of formula by Burton et al. [1975] for connection of interplanetary conditions with Dst and Dst* indices the efficiency of storm generation by Sheath and CIR is about 50 percent higher than generation by ICME [Nikolaeva et al., 2013, 2015]. In the literature there are many various functions coupling (FC) various interplanetary parameters with magnetospheric state. In this work we study the efficiency of main phase storm generation by different SW streams when using 12 another FCs on the basis of OMNI data during 1976 ... 2000. Obtained results show that for most part of FCs Sheaths have the highest efficiency and MCs have the lowest efficiency in accordance with our previous results. The reliability of the obtained data and possible reasons of divergences for various FCs and various SW types require further researches. 
N. S. Nikolaeva, Yu. I. Yermolaev, I. G. Lodkina
physics.space-ph