IUGG in Melbourne

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2011 IUGG General Assembly was held from June 28 to July 7, 2011 at Melbourne.

======================== Session 1 ============================
J-S09 Electromagnetic Studies of Earthquakes, Active Faulting and Tsunamis

Lead Convenors: M. Johnston (United States of America), T. Harinarayana (India)
Scope: The realization that earthquakes, aseismic fault failure and tsunamis generate electromagnetic phenomena has
been the subject of intense interest during the past few years. Crustal phenomena may arise directly and/or indirectly
from source processes driving these tectonic events and may reflect the roles of fluids in active faulting. Unfortunately,
not all aspects of these measurements, or theories proposed to explain them, are well understood. Tsunami effects arise
from the movement of conducting seawater in the Earths' magnetic field. This symposium will focus on the following four
main areas of investigation:
- Measurements of electric and magnetic fields near active faults and with tsunamis
- Controlled laboratory observations and observations from natural laboratories such as locked faults, slipping faults and
stress from dam loading/filling,
- Theoretical considerations regarding source generation mechanisms.
- Measurement resolution, data quality, identification separation and removal of spurious signal sources.
Each of these areas provides insight into, and quantification of, electromagnetic fields generated by earthquakes and
======================== Session 2 ============================
J-S10 Electromagnetic studies of active processes using space technology

Lead Convenors: M. Parrot (France), Y. Hobara (Japan)
Scope: Observations of electromagnetic phenomena associated with seismic and volcanic activities have been reported for
many years. Perturbations occur not only in the lithosphere but also in the atmosphere and ionosphere, leading to the
generation of a new science field, lithosphereatmosphere- ionosphere coupling. This session will accept papers dealing with
new observational findings on the seismic effects with satellites. Contributions along the following lines are also
- The TEC variation provided by GPS satellites,
- Coordinated satellite and ground-based EM experiments
======================== Session 3 ============================
J-S11 - J-V09 Imaging and monitoring active volcanoes and geothermal fields by ElectroMagnetic (EM) and
other geophysical techniques

Lead Convenor: J. Zlotnicki (France)
Co-convenors: Y. Sasai (Japan), V. Spichak (Russia)
Scope: Electromagnetic methods have been intensively applied to volcanic systems, hydrothermal and geothermal fields for
understanding the structure and tectonic setting, and for monitoring the activity. Analyses of long time series undoubtedly
show that magnetic and electric effects can precede volcanic eruptions, and geothermal activities. The development of
new technologies and methodologies allows us to clarify the relationships among magmatic, hydrothermal, environmental
and mechanical processes. Combination of land and satellite EM studies with other geophysical observations could also
drastically improve the description and understanding of on-going processes.
The session will focus on the following lines:
- EM tomography and modelling of volcanic/geothermal environments,
- Integrated EM monitoring such as self-potential, magnetic, electric, magnetotelluric, combined with satellite
- Joint EM, geochemical, thermal, ground deformation and seismic observations,
- Laboratory experiments and physical mechanisms of EM generation processes,
- Modelling of volcanic activity
======================== Session 4============================
J-S12 Towards short-term earthquake prediction - Electromagnetic and other possible precursors and their
generation mechanisms

Lead Convenor: T. Nagao (Japan)
Co-convenors: Konstantinos Eftaxias (Greece), Friedemann Freund (United States of America)
Scope: It is generally believed that the achievement of the short-term earthquake prediction is very difficult. However, this
topic is one of the ultimate goals of the solid earth sciences. Furthermore, to achieve short-term prediction, the
unambiguous identification of precursory phenomena is essential. During the past few decades, there have been strong
arguments about the reality of the existence of "reliable" precursory phenomena. In this session, we would like to focus
not only on electromagnetic "precursors" but all suggestions of "reliable" earthquake precursors. Most important will be
evidence showing clear uniqueness of these signals in the long-term record, relation to other independent geophysical
data and their generation mechanisms. Thus, we would like to discuss the following topics from a critical points of view.
1) All kinds of evidences of precursory phenomena, involving seismic, geodetic, geochemical, hydrological, in addition to
electromagnetic anomalies, and their inter-relationships.
2) Theoretical models and lab experiments to explain the physical mechanisms behind precursory phenomena.
3) Study of various data bases with new procedures (e.g. critical approach).

======================== Session 5 ============================
J-A04 Electromagnetic oscillations from space to Earth: Celebrating 150 years and recent developments in
ultra-low frequency wave research
Organiser: IAGA Div.3 (To be co-sponsored by IAGA Divisions I, II, V, Interdivisional Commission on History and IASPEI)
Lead Convenor: Brian J Fraser (Australia)
Co-Convenor: Malcolm Johnston (United States of America)
Scope: The year 2011 marks the 150th anniversary of the first publication on the rapid geomagnetic fluctuations that are
now known as the ultra-low-frequency (ULF) waves. This landmark observation published in 1861 by Balfour Stewart of
the Kew Observatory near London commenced an ever-growing research field whose topics range from the connection
between solar activity to upper atmospheric phenomena, the dynamics of the magnetosphere, and the electric conductivity
interior to the Earth. These seemingly different subjects in fact share common observations and physics through ULF
waves. This special symposium will celebrate the 150th anniversary of the discovery of ULF waves by bringing together
not only historical aspects of ULF research but also newly developed observational and modeling techniques that promise
further understanding of both space and terrestrial environments. Interests will be focused on the role of ULF waves in
the solar-terrestrial and planetary sciences, the Earth sciences in the areas of wave generation and propagation
processes, diagnostic techniques and applications.