






             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


