The GGOS Contribution to GEOSS and an Observing System for Geohazards and Disaster
Prevention
A GEO Workshop organized by the Global Geodetic Observing System (GGOS)
November 5-6, 2007 Frascati, Italy
A Contribution to the International Geohazards Week
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IAG
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Last edited 02 December 2016
Workshop Program Synopsis
The Workshop program was organized in an opening session
and three topical sessions. Each of these topical session lasted approximately
half a day, and addressed observation, interpretation, and application to geohazards, respectively.
The topical sessions are:
- Session 1: Observing changes in Earth's shape, rotation and gravity field with an
integrated observing system: This session documented recent advances in
observing the three principle quantities of geodesy, in particular through
increasing integration of the in situ and spaceborne components of GGOS.
Likewise, the session addressed the technological methodological
challenges in bringing GGOS to the next level of accuracy
Topics discussed included the advances in observing surface displacements
down to local scales, integration of the in situ and spaceborne gravity observing
system, linking the observations of the geometry and gravity field,
and observations of Earth's rotation with increased resolution and decreased
latency. A key focus was on observations allowing to improve the
instantaneous accuracy of the terrestrial reference frame.
- Session 2: Understanding the Earth system: The contribution of GGOS:
In this session, focus was on recent contributions of geodetic observations
to a better understanding of the main processes in the Earth system relevant
for global and climate change, hazards and disasters, and other issues
affecting our living on a restless planet. Topics included
the progress in monitoring the mass transport in the water cycle,
determining the strain field of the Earth surface, and linking Earth
rotation perturbation to dynamical processes in the Earth system.
- Session 3: GGOS and Geohazards: The importance of GGOS in the
frame of a solid Earth observation system was the focus of this session.
GGOS not only provides the reference frame for local observations of key
quantities relevant for geohazards (in particular, surface displacements,
strain rates, gravity changes), but also observations of these quantities
on regional to global scale. Topics addressed were the contribution
of geodetic observations for hazard assessement, understanding of
underlying processes, and rapid detection of developing hazards for
early warning applications.