REPORT IAG SECTION 1
University of Nottingham,
Institute of Engineering Surveying & Space Geodesy (IESSG,
Nottingham NG7 2RD
structure of Section I in the period 1999-2003, established during the
IUGG General Assembly in Birmingham, is similar to that for the
previous four-year period, in that it consists of one Commission, one
Special Commission and four Special Study Groups. These are:
X "Global and Regional Geodetic Networks"
President: Claude Bocher
Commission 4 "Application of Geodesy to Engineering"
President: Heribert Kahmen
1.179 "Wide Area Modelling for Precise Satellite
Chair: Shaowei Han
1.180 "GPS as an Atmospheric Remote Sensing Tool"
Chair: Hans van der Marel
(ionosphere) Susan Skone
1.181 "Permanent Regional Arrays"
Chair: Robert Weber
1.182 "Multipath Mitigation"
Chair: Mike Stewart
Commissions and SSGs have all been very productive during the period
1999-2001, and details of their activity are reported below. In
particular, there has substantial activity in the topic of SSG 1.180,
where GPS is proving to be of significant importance in a number of
atmospheric research and operational applications.
I has also played a major part in several scientific meetings during
the last two years, of particular note perhaps were the Mobile Mapping
Technology workshop in Cairo, Egypt in January 2001, and the symposium
on Vertical Reference Systems in Cartagena, Colombia in February 2001.
In addition the Section will be playing a full role in the forthcoming
IAG Scientific Assembly in Budapest, and has several meetings planned
for the period between then and the next IUGG General Assembly in
is increasingly apparent that there has been growing interaction and
overlap between the Sections of the IAG (Section I and Section II in
particular) as well as between the Sections and the IAG services. This
is no more apparent than in Section I with for example the subject of
global and regional networks being of primary importance to both
Commission X and the IGS.
IAG review of its structure, which will be presented for discussion
and approval at the forthcoming IAG Scientific Assembly in Budapest,
in September 2001, addresses the growing importance of the IAG
Services, whilst also redefining the Section/Commission structure in
an attempt to recognise the changing geodetic scene. In the proposed
structure the present five sections and their associated commissions
and special commissions, will be abolished, to be replaced by four
topic-related Commissions (each with a sub-structure of SSGs etc.).
Under this new structure it is proposed that a Commission on
Positioning and Applications be established, largely taking on
the role of the current Section I, but recognising the growing
involvement of geodesists in the application of geodesy.
this application role in the field of engineering has been addressed
through SC4. Under the new proposal, applications in a much wider
sense will in future have more substantial recognition in the work of
the IAG. Furthermore the IAG Services, such as the IGS, will have a
more explicit role in IAG activities, as together with the new
Commissions, they will form the main components of the new IAG