1 ST   A N N O U N C E M E N T

      I N T E R N A T I O N A L    C O N F E R E N C E

              " P R O B L E M S    O F   G E O C O S M O S "

                    J U N E , 10 - 16 , 1996


        S A N K T - P E T E R S B U R G ,   R U S S I A

      Sankt -Petersburg University, Sankt -Petersburg,Russia
      Arctic and Antarctic Research Institute, St.-Petersburg,Russia
      Polar Geophysical Institute, KSC, Murmansk, Russia


    The aim of the Conference "Problems of Geocosmos" is the summary
    of the results of the scientific scools and groups in the fundamental
    study  of the physics, evolution and interaction of the geospheres
    and the study of the latters as a united system.

    The following sections will be concluded in the Conference.

    Section P. Paleomagnetism and rock magnetism.
      P1. The geomagnetic field intensity during reversals.
      P2. Fine structure of the geomagnetic field from lake sediments.
      P3. Nagnetic anisotropy of sedimentary rocks.

    Section C. Electroconductivity of the Earth.
      C1. Investigation of the crust and mantle structure by the
          electromagnetic metods.
      C2. Layers with low resistance in the crust (the comlex analysis
          of the geoelectric, seismic and gravimetric data).
      C3. Models of the global and regional distribution of the mantle
          conductivity under the continental crust and oceans using MVS data.
      C4. The development of the methods of the direct and inverse problems
          of the electromagnetic sounding using the natural electromagnetic
          field sources.

    Section S.Seismology.
      S1. The theory of the propagation of the seismic waves.
      S2. Seismic tomography.
      S3. Earthquake sources.

    Section M. The physics of the Sun - Earth relations.
      M1. The physics of the processes on the Sun and in the solar wind.
      M2. The interaction of the solar wind and the magnetosphere.
          The theory of the magnetic reconnection.
      M3. The physics of the magnetospheric and ionospheric plasma.
      M4. The influence of the solar activity on the state of the lower
          atmosphere.

    Section B. The geocosmical action on biosphere.
      B1. Cosmic rhythms in biosphere.
      B2. Methodological problems of the cause-effect connection
          revealing when evaluating the action on biosphere.
      B3. Biological effects of natural electromagnetic fields.
      B4. Physico-chemical processes of athmosphere and life.
      B5. Gravitational and geodynamic actions on biosphere.

                     Programme Committee:
          V.N.Troyan -  conference chairman, SPB University, Russia
          A.A.Kovtun - - professor,  SPBUniversity, Russia
          M.I.Pudovkin - professor,  SPBUniversity,Russia
          T.B.Yanovskaya - professor,  SPBUniversity,Russia
          V.A.Shashkanov - professor,  SPBUniversity,Russia
          O.A.Troshichev  - professor, AARI, SPB, Russia
          E.D.Tereschenko - professor, PGI, Murmansk, Russia


                     Organizing Commettee:
          Vladimir Troyan  -  chairman, SPBUniversity
          Alexsander Shirochkov - AARI,St.-Petersburg
          Alexsander Yahnin  - PGI, Apatity
          Alla Lyatskaya - SPBUniversity
          Ludmila Porokhova - SPBUniversity
          Larisa Antonova - SPBUniversity
          Natalia Belisheva - SPBUniversity

          For more information, please contact the organizers:
    e-mail: lyatsk@space.phys.lgu.spb.su
            lyatsk@snoopy.niif.spb.su
            lnpor@snoopy.niif.spb.su
            anton@snoopy.niif.spb.su
            belish@snoopy.niif.spb.su

    phone : (812) 428 46 31
    FAX:    (812) 428 72 40

   We intend to publish  Abstracts and the Proceedings of talks and Posters.

   The invited reports are supposed.

   The organizers hope to get some funds for to have the possibility
   to invite a number of colleagues to attend the Conference.

   Example for the Abstract (nor more than 26 rows) presentation:


Subject: Abstract at the ‘onference "Problems of Geocosmos"

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\section*{3--D DIFFRACTION SEISMIC TOMOGRAPHY}

%\begin{center}
{\bf
Vladimir N. Troyan, Gennady A. Ryzhikov
} \\{\sl
Institute of Physics, State University, St. Petersburg, Petrodvorets,
198904, Russia}
%\end{center}
\bigskip

According to the plan, after the launch of INTERBALL spacecraft
on Aug.~3, 1995 the coordination of the ground-based program is in
progress including participation in planning of spacecraft
operation and its conjunctions with ground-based instruments etc,
development the corresponding data base etc. Implementation
of remote sensing of magnetospheric configuration resulted in the
following new results: (1)~Detection of low-altitude image of
magnetospheric dipolarization at substorm onset and of its sharp
(about ion gyroradius) outer boundary; (2)~Mapping of
azimuthally periodic auroral activations at substorm onset into the
inner magnetosphere; (3)~Confirmation of local minimum of
equatorial magnetic field at $\approx12\,R_e$ during steady convection
events; (4)~Evidence that most of auroral proton precipitation
into the ionosphere originate due to the particle scattering in
the tail current sheet; (5)~New MT-index was suggested to evaluate
the magnetospheric configuration. Numerical algorithm was
constructed to determine magnetotail configuration based on
combined data from magnetospheric and low-altitude spacecraft.
Spacecraft study of plasma sheet dynamics  revealed a clear
evidence of magnetic reconnection at $<15\,R_e$ distance initiated
before the ground-based substorm onset, also plasma bubble
structures have been, for the first time, detected in the midtail
plasma sheet during substorm recovery phase.


\section*{References}
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Troyan V. N., Ryzhikov G. A. Investigation of the resolving
power of 3D seismic diffraction tomography.
{\sl Annalyes Geophysicae},
pt.~1. Suppl. to vol.~{\bf 12}, p.~C55, 1995.

Birylina M. S., Hanyga A., Ryzhikov G. A. Generalized 3--D ray
tomography.
{\sl Annalyes Geophysicae},
pt.~1. Suppl. to vol.~{\bf 12}, p.~C48, 1995.

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\cent

1. V. N. Troyan

\parindent 11pt

   Institute of Physics,

   University of St.~Petersburg,

   St.~Petersburg --- Petrodvorets,

   198904, Russia

   Telephone: (000) 000 00 00

   Fax: (000) 000 00 00

   e-mail:

\parindent 0pt

2. Section number. Title of your abstract.

3. Financial supporting :  if need

5. Oral  or poster

  The adrress for the Abstract:

   Porokhova L.N.
   St.-Petersburg  University
   Ulyanovskaya,1
   Petrodvorets
   St.-Petersburg
   198904  Pussia

   OR :
   by  e-mail: lnpor@snoopy.niif.spb.su

   The registration: 01 January - 01 February, 1996

   The deadline for the Abstract presentation : February, 01, 1996
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