The programme for the RAS Discussion Meeting on 'Tectonics from Above:
Recent Advances in the Use of High-resolution Topography and Imagery'
can be found at http://comet.nerc.ac.uk/ . The meeting will be held in
the Royal Astronomical Society lecture theatre at Burlington House
(https://www.ras.org.uk/events-and-meetings/ras-meetings) on Friday 13th
March 2015.
Registration will take place at the door, but it would be helpful for
planning purposes if anyone intending to attend the meeting could notify
Maria Petrunova ([log in to unmask]). Anyone wishing to present a
poster in the lunchtime poster session should email a title and short
abstract to [log in to unmask]
Apologies for any cross-posting
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Tectonics from Above: Recent Advances in the Use of High-resolution
Topography and Imagery.
Topography is one of the most important geophysical observations that
can be made at the Earth's surface, but often one that is taken for
granted. Recent advances in topographic measurements have significantly
improved the spatial resolutions now available to earth scientists; from
the 90 m resolution SRTM global DEM widely used now, through the 12 m
resolution WorldDEM about to be completed (using data recorded by the
TanDEM-X radar mission), to the 1 m DEMs that may be obtained through
LiDAR and space/aerial stereo-photogrammetric measurements. Future use
of drone technology offers the potential of even higher resolution DEMs
from both LiDAR and multi-stereo optical images.
Combining the new high-resolution topography with high-resolution
imagery allows the Earth's surface to be explored in a virtual
environment. For example, subtle geomorphic features preserved in the
landscape can enable us to determine the slip that occurred in recent
and past earthquakes. In addition, three-dimensional analysis of
high-resolution topographic and optical imagery can significantly
enhance the impact and efficiency of geological field measurements;
geological dating of geomorphic features is essential in quantifying how
faults evolve through time. Furthermore, comparison of pre- and
post-earthquake datasets now allows the retrieval of the full 3D
deformation field produced by earthquakes (including post-seismic
deformation occurring after the earthquake).
The aims of the meeting are two-fold. First, to expose to a wider
audience the new data sets (e.g. Tandem-X, LiDAR, Pleiades imagery), and
the new methods for generating and analysing these data sets (e.g.
photogrammetric DEM extraction, point cloud manipulation), that are
currently available for measuring continental topography and surface
displacements. Second, to provide a forum for the discussion of new
tectonic applications of high-resolution topography and imagery.
Organisers: Richard Walker (Oxford), Ed Nissen (Colorado School of
Mines), James Hollingsworth (Arup) and Barry Parsons (Oxford)
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