Workshop
on Recent Advances in Ground and Airborne electromagnetic
Methods - Innovations in Processing and Inversion Techniques
27
- 28, September 2011
Atomic
Minerals Directorate for Exploration and Research (AMD), a constituent
of Department of Atomic Energy, Government of India is closely
associated with the important phases of nuclear fuel cycle, like
exploration for atomic mineral deposits, site selection for nuclear
reactors and selection of suitable sites for nuclear waste disposal.
National
Geophysical Research Institute (NGRI), a constituent laboratory
of CSIR, Government of India, was established in 1961 with the
mission to carry out research in multidisciplinary areas of Earth
Sciences. The Institute plays a pivotal role in the exploration
of Hydrocarbons, Mineral and Groundwater resources in addition
to studies in Engineering Geophysics, Seismology, Geo-dynamics
and Geo-environment.
AMD
with vast experience in undertaking large scale airborne survey
operations employing radiometric and
magnetic
sensors since 1950’s, quickly embraced the new technological
advancements in airborne geophysical data acquisition, processing
and interpretation
techniques. AMD is conducting airborne surveys not only for
uranium exploration but also in environmental and hydrocarbon exploration
activities in collaboration with other national organizations
viz., ONGC, NRSA and NPC. For the past few years AMD is conducting
high
resolution airborne/heliborne magnetic, Gamma Ray Spectrometery
and Frequency domain/Time domain EM surveys in different geological
environs of the country.
For
augmenting uranium resources in the country, AMD is greatly relying
on the latest technological
advances
in earth science with a special emphasis in airborne geophysical
data acquisition, processing, visualization and interpretation.
High resolution airborne electromagnetic (AEM) surveys are
being
increasingly employed in geological mapping and in delineation
of target areas for uranium exploration. Uranium exploration
is a multi-disciplinary endeavor wherein airborne geophysical
inputs play a very important role, providing valuable subsurface
information.
Current emphasis in uranium exploration is to substantiate
the classical approach of data gathering with a more multi-disciplinary
approach involving geoscientists with complementary expertise
and
capabilities.
Initially
the surface electrical and EM methods of geophysical prospecting
were developed with the prime objective
to explore for the natural resources like: minerals, water,
hydrocarbons,
etc. However, their contemporary applications, investigating
shallow
to moderate depths, include problems such as: sea water incursion
in coastal areas, reservoir studies, slurry and waste disposal,
mapping of pollution plumes, detection of UXO’s, buried archaeological
structures, cavity mapping, etc. Airborne electromagnetic
(AEM) surveys are increasingly playing a decisive role in mineral
exploration with major developments in sophisticated instrument
systems and
data processing capabilities for a variety of exploration
purposes.
In uranium exploration AEM surveys provide a quick assessment
of the survey area in terms of its potentiality and helps in
understanding of the subsurface tectonic and litho-structural
controls of mineralization.
Advanced
processing, interpretation and presentation of ground and airborne
Electromagnetic data provides the much needed
3D information
of subsurface geology. To deal with the vast amount of AEM
data, much more automated analysis techniques of processing and
interpretation
are the need of the hour. Major advances in EM modeling/inversion
are witnessed during the last decades. Despite the major
advances in 2D and 3D EM modeling, imaging of EM data using various
2D or 3D algorithms is faced with many pitfalls and limitations.
Constrained
modeling of ground and airborne Electromagnetic data followed
by
holistic integration of geological, ground geophysical, geochemical
and drilling data is extremely helpful identifying new targets
in present day exploration activities.
The
main objective of
the workshop is to discuss the recent trends in innovations
related to acquisition, processing and inversion of ground and
airborne electromagnetic data with a special emphasis on its
role in uranium
exploration by inviting eminent professionals and academicians
on to a common platform. The workshop presents an opportunity
to show case the strength and effectiveness of AEM surveys as
an indispensable
airborne geophysical technique for a wide variety of geological
problems from uranium exploration to environmental and
site selection issues. The workshop intends to deliberate upon
the state-of-the-art
and advancements in instrumentation and data processing
techniques and their applicability to prioritize the target areas
in uranium
exploration by integrating with ancillary information to
build conceptual geological models .
The
workshop reflects the challenges facing the geo-scientific community
involved in exploration as
we strive to operate with ever changing expectations
and targets.
Experts
and academicians from various national and international
organizations who are actively involved in developments
of ground and airborne Electromagnetic data will be delivering
invited talks
followed by presentation of case studies.
Broadly
the themes of the workshop include
1.
Advances in Airborne EM methods
2.
Airborne EM surveys: case histories
3.
Integration of ground, AEM and multi-parametric measurements
4.
Mapping of pollution
zones, waste disposal and
other shallow applications
Registration
Those intending to participate /contribute a paper may register
on
or before
September 1, 2011
Participants
for poster session should send the title, name(s) of the author
(s) and organistaion and
address,
including
the email
ID on or before 7th September 2011. The
size of the poster with text (with diagrams and figures) should
be A0
size.
For
Brochure Click here
