Southwest Research Data Display & Analysis System (SDDAS) _A_d_d_r_e_s_s: Southwest Research Institute Division of Instrumentation and Space Sciences P.O. Drawer 28510 San Antonio, TX 78228-0510 _E-_m_a_i_l: sddas-help@pemrac.space.swri.edu _P_h_o_n_e: (512) 522-3259 _D_e_s_c_r_i_p_t_i_o_n The SDDAS maintains a large optical disk database of data returned by the Dynamics Explorer satellites 1 & 2. It pro- vides interactive tools for displaying this data in various ways and selected subsets may be acquired via anonymous FTP. This data is primarily used by those doing research in space physics, magnetospheric physics, and the dynamics of the upper atmosphere. The measurements are classified as fol- lows: DC magnetic field; AC electric field; particles; elec- tron and ion ionospheric temperature and density; ion compo- sition and drift; thermal neutral drift, composition, den- sity, and temperature. _N_e_t_w_o_r_k _a_c_c_e_s_s Access is made via TELNET to espsun.space.swri.edu using port 540. One may also request a private account if exten- sive use is projected. _W_h_o _C_a_n _U_s_e _t_h_e _S_D_D_A_S A potential user must receive verbal authorization from Dr. J.D. Winningham (512-522-3075) before making use of this resource. A User's Guide will be sent to each authorized user. There are no restrictions on who may use this system, except that credit must be given in any publications that result from its use. There is also a limit of 8 users at any _________________________ The information in this section is provided in accor- dance with the copyright notice appearing at the front of this guide. 9 November 1989 NNSC Section 3.7, Page 1 one time. _M_i_s_c_e_l_l_a_n_e_o_u_s _I_n_f_o_r_m_a_t_i_o_n The database server will be upgraded to a SUN SPARCserver 330 in August, 1989. A detailed list of the data holdings may be requested from sddas-help@pemrac.space.swri.edu. 9 November 1989 NNSC Section 3.7, Page 2