Environmental Engineering Reference
In-Depth Information
include comparable Landsat data. AVA
is overall goal is to improve our ability
to forecast the timing, effects, and extent of volcanic activity, by providing ASTER
and other data in a readily accessible format.
'
9.5 Summary
Over the past half century, the increased availability of global multispectral remote
sensing data, recording the activity of the world
s volcanoes, has contributed to
the globalization of volcanology. The global data base enables comparisons of
volcanic activity styles, intensities, timing, eruption precursors, as well as mapping
surveys of the distributions of erupted products, alteration zones, and thermal
anomalies, to name just a few aspects. The collation of relevant meteorological
data, as they apply to studies of volcanic activity, provides a way to study the
composition and movement of volcanic airborne emissions across the globe. New
in situ
airborne sampling techniques, especially as related to unmanned airborne
vehicles, provide an unprecedented, less risky opportunity for sampling key
volcanogenic emissions in airspace that would be hazardous to manned aircraft.
Comprehensive discipline-specific specialty data archives, such as the ASTER
Volcano Archive, can provide real analyses payoffs. As tools for mining massive
data sets are applied to ever accumulating remote sensing data, comparisons
and contrasts between volcanic systems over time should prove fruitful for
science and hazard mitigation. While such data inform contemporary process
and transport models, they also enable estimations of boundary conditions and
environmental responses for massively larger eruptions in our past, and for the
similar-scale eruptions that lie ahead.
'
Acknowledgments
Work represented here was carried out under contract to NASA at the Jet Propul-
sion Laboratory of the California Institute of Technology in Pasadena, California,
USA. The author thanks Fred Prata for a very helpful review.
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