GEON LiDAR / ALSM Processing Workflow
LiDAR (Light Distance And Ranging, a.k.a. ALSM (Airborne Laser Swath Mapping))
data are quickly becoming one of the hottest tools in the Geosciences for
studying the earth's surface. Capable of generating digital elevation models
(DEMs) more than an order of magnitude more accurate than those currently
available, LiDAR data offers geologists the opportunity to study the processes
that shape the earth's surface at resolutions not previously possible.
This GEON tool for distribution, interpolation and analysis of LiDAR data is now
available via the
Currently, GEON is hosting LiDAR data from the
Northern San Andreas Fault in California and the Western Rainier Seismic Zone in
Washington. Additional data sets will come on line in the near future.
The images above show the results of an analysis, conducted using tools developed by the
for an ALSM dataset of the Northern San Andreas Fault near Fort Ross, California.
(click on images for larger versions)
The left image shows a full feature DEM (complete point cloud interpolated at
about 2 meters/pixel) for the area. Canopy height is colored in shades of green
with darker colors denoting taller trees. The right image shows the "bare earth"
created by interpolating points returned only from the ground surface. The red
lines show the discontinuous traces of the San Andreas fault which broke in the
Credit: Christopher J. Crosby, J Ramon Arrowsmith, Jeff Conner (ASU/GEON)
and Efrat Frank, Ashraf Memon, Viswanath Nandigam (SDSC/GEON)
For more information see the GEON LiDAR page.
Geoinformatics 2006 Meeting
Information regarding the Geoinformatics 2006 Meeting, to be held May 10-12, 2006 at the
USGS National Center in Reston, VA is now available online at
This meeting is being co-hosted by the USGS and GEON (NSF), and
sponsored by the Geological Society of America
and NASA. It will provide a national forum for researchers and
educators from geoscience and information technology/computer
science to present new data, data analysis or modeling techniques,
visualization schemes, or technologies as they relate to developing the
cyberinfrastructure for the Geosciences.
Online Registration and Abstract Submission forms can also be accessed
at the above URL. Registration is limited,
abstract submissions must be received by March 24, 2006. The
registration fee of $50 may be waived for eligible Post Docs
and Graduate Students. Any questions regarding this meeting that are
not found on the above web site may be directed to
Margaret Banton (Chair, Organizing Committee) at
GEON at AGU
Several GEON PIs and team members attended and presented at the American
Geophysics Union meeting, held December 5-9, in San Francisco.
A full list of GEON-related presentations given at this meeting can be
found at: http://www.geongrid.org/news/articles/agu2005.html The
project again hosted a booth in the Exhibit Hall at this meeting, where
a number of team members were on-hand throughout the week, talking with
community members and providing demonstrations of some of the tools that
have been developed in GEON. Approximately 900 middle school students
from local (San Francisco) schools visited the Exhibit Hall on the last
day of the conference. Students came prepared with a list of questions
they needed to answer and items to collect, during their visit.
Overall, traffic through the booth during the entire week was "brisk",
based on a very informal (but dependable) tally. That is to say that
more than 7,000 GEON pens were distributed from the booth over the
course of the five days, and few visitors take more than one pen at a
time (one benefit of having such "chunky" pens to give away!).
GEON also teamed up with other geoinformatics projects (including SESAR,
EarthChem, and others) to host an informal open forum on "Building a
Global Geoscience Cyberinfrastructure: International Collaboration in
Geoinformatics". The evening discussion attracted approximately 50
Chuck Meertens, GEON PI (UNAVCO) to Give Plenary Talk at ESIP Meeting
Chuck Meetens will be giving a plenary talk entitled "Integrating
Educational Content into the Earth Information Exchange"
at the 2006 Winter Federation of Earth Science Information Partners
Meeting. This meeting is being called "The Earth Information Exchange:
Delivering Data to Decision Makers", and will be held January 4-6, 2006
in Washington D.C. The purpose of the talk is to encourage technical
developers and scientists to participate in the challenges of education