Working Group 6.1
Deformation Monitoring and Analysis
Policy Issues
Deformation studies in Engineering Surveying are based on a broad
knowledge of suitable sensors and their potential, modern data storage and
communication solutions and advanced processing and analysis methods.
Additionally, a thorough understanding of the behaviour of monitoring
objects and processes (e.g., large scale structure or landslide effected
area), is essential to set-up and operate an optimum monitoring system.
Nowadays deformation tasks are more and more oriented towards
real-time, multi-sensor systems, which require automation of data capture
and new concepts in data processing, analysis and interpretation.
WG6.1’s main goals will be to support specialists in deformation
studies with state-of-the art solutions and provide latest developments
and future oriented concepts:
- Promoting studies on the potential of existing and new sensors to
determine geometric deformation quantities from surveying and adjacent
fields;
- Promoting the development of concepts for automated data storage,
data transfer and data pre-processing;
- Promoting the adaptation of numerical algorithms to derive
relevant deformation quantities in real-time, including concepts from
time series analysis;
- Promoting a multidisciplinary collaboration between surveying,
structural and geotechnical engineers to understand the behaviour of
structures and geotechnical objects;
- Study of most modern concepts for data analysis like artificial
neural networks, fuzzy logics and generic algorithms;
- Investigate and adopt as required modern analysis techniques (Big
Data, IoT, etc.) to cope with large volume data arising from large
number of low-cost sensors;
- Study the issues and investigate the challenges arising for using
Unmanned Arial Vehicles (UAVs) for deformation monitoring;
- Initiate investigations to extend the range of deformation studies
to higher frequencies, which are important in Structural Health
Monitoring, i.e. to be able to study oscillations and vibrations and
their effects on critical structures;
Chair
Prof. Dr. Wolfgang Niemeier, Germany
w.niemeier[at]tu-bs.de
Co-Chair
Prof. Dr. Vassilis Gikas, Greece
vgikas[at]central.ntua.gr
Symposia
WG 6.1 has a long tradition in the field of dissemination of the new
monitoring techniques and on the geometrical analysis of geodetic
deformation networks. This Working Group has organized several events
and supported many others. Between 1975 and 2008 WG6.1 organized 13
Symposia on the overall theme of
Deformation Measurement, being that the last two were organized in
conjunction with IAG.
1975 - Krakow, Poland (1st FIG Symposium on Deformation
Measurements, Prof. A. Platek)
1978 - Bonn, Germany (2nd FIG Symposium on Deformation
Measurements by Geodetic Methods, Prof. L. Hallermann)
1982 - Budapest, Hungary (3rd FIG Symposium on Deformation
Measurements, Prof. A. Detreköi)
1985 - Katowice, Poland (3rd FIG Symposium on Deformation
Measurements by Geodetic Methods, Prof. W. Janusz)
1988 - Fredericton, New Brunswick, Canada (5th FIG Symposium on
Deformation Measurements, Prof. A. Chrzanowski)
1992 - Hannover, Germany (6th FIG Symposium on Deformation
Measurements, Prof. H. Pelzer)
1993 - Calgary, Alberta, Canada (7th FIG Symposium on Deformation
Measurements, Prof. W. Teskey)
1996 - Kowloon, Hong Kong (8th FIG Symposium on Deformation
Measurements, Prof. Y.Q. Chen)
1999 - Olsztyn, Poland (9th FIG Symposium on Deformation
Measurements, Prof. A. Wasilewski)
1999 - Orange, California, USA (10th FIG Symposium on Deformation
Measurements, C. Whitaker)
2003 - Santorini, Greece (11th FIG Symposium on Deformation
Measurement, Prof. Stathis Stiros)
2006 - Baden, Austria (FIG 12th Symposium on Deformation
Measurement and Analysis and the IAG 3th Symposium on Geodesy for
Geotechnical and Structural Engineering, Prof. Günther Retscher)
2008 - Lisbon, Portugal (FIG 13th Symposium on Deformation
Measurement and Analysis and the IAG 4th Symposium on Geodesy for
Geotechnical and Structural Engineering, Eng. Maria Henriques)
In 2011 a new series of symposia, named “Joint International
Symposium on Deformation Monitoring (JISDM)”, was created. These
symposia are a joined initiative of FIG (leadership), IAG and ISPRS.
The objective is to bring together specialists from different fields
within the geodesy, photogrammetry and surveying communities, which
have interest in the here mentioned fields of deformation
monitoring. Up to now, these symposia were held in:
2011 - Kowloon, Hong Kong (1st Joint International Symposium on
Deformation Monitoring, Prof. Xiaoli Ding)
2013 - Nottingham, United Kingdom (2nd Joint International
Symposium on Deformation Monitoring, Dr. Xiaolin Meng)
2016 - Vienna, Austria (3rd
Joint International Symposium on Deformation Monitoring, Prof.
Dr.-Ing. Hans Neuner)
2019 - Athens, Greece (4th Joint International Symposium on
Deformation Monitoring, Prof. Vassilis Gikas)
The next symposium is scheduled to take place in 2022, in
Valencia, Spain.
What we are working on -
- Organizing the 5th Joint International Symposium on
Deformation Monitoring (JISDM) to be held in Valencia, Spain
in 2022
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What's New
The Working Group organized the 4th Joint International Symposium on
Deformation Monitoring (JISDM). This was held in Athens, Greece, from the
15th to the 17th of May. With more than 200 participants coming from all
continents, this symposium can be considered to be a real success.
The joint symposium was organized by the School of Rural and Surveying
Engineering of the National Technical University of Athens and was
supported by FIG , IAG and ISPRS. The president of the local organizing
committee was Vassilis Gikas, the co-chair of the WG6.1.
The three keynote speakers - Carmelo Gentile, Charalampos (Haris)
Kontoes and Dorota A. GrejnerBrzezinska - introduced the latest tendencies
in the field of deformation monitoring and shared their vision on the
evolution of technologies and methods for monitoring both natural
phenomena and man-made structures.
A total of 132 presentations (95 oral and 37 poster) covered several
topics that included:
- quality control, quality assurance and optimization techniques in
deformation analysis; i
- point cloud-based space-temporal deformations;
- reference frames and geodynamics;
- cultural heritage/ bridge / dam / geohazards monitoring;
- multi-sensor systems and new concepts for deformation
measurements; vi) UAV for change detection and deformation monitoring.
Special issues of the Journal of Applied Geodesy (De Gruyter), of the
Journal of Applied Geomatics (Springer) and of the Journal Sensors (MDPI),
that will include an extension of selected articles presented at the
symposium, are in progress.
In the closing session the chair of the WG6.1, Wolfgang Niemeier, made
a short report of the event and announced that the next JISDM, the 5th,
will take place in Valencia, Spain, in 2022.
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