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Books > Earth & environment > Earth sciences > Structure & properties of the Earth > Volcanology & seismology
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Geodetic And Geophysical Effects Associated With Seismic And Volcanic Hazards (Paperback, 2004 ed.)
Loot Price: R1,721
Discovery Miles 17 210
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Geodetic And Geophysical Effects Associated With Seismic And Volcanic Hazards (Paperback, 2004 ed.)
Series: Pageoph Topical Volumes
Expected to ship within 10 - 15 working days
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Although geodetic monitoring techniques have been widely used in
areas of seismic or volcanic activity, the difficulty inherent to
their discrete nature means that they must be deployed carefully to
ensure the best possible detection or sensitivity of these points
(see e. g. , BALDI and UNGUENDOLI, 1987; JOHNSON and WYATT, 1994;
SEGALL and MATTHEWS, 1997; Yu et al. , 2000). In many cases, a more
global monitoring method, is required yet at the same time one that
offers the highest level of sensitivity which enables detection of
the phenomenon. Interferometry radar (InSAR) techniques have been
shown to play an important role in seismic and volcanic monitoring
because they cover large areas (100 x 100 km) and can be easily
systematized in monitoring (see e. g. , MASSONNET and FEIGL, 1998;
BDRGMANN et al. , 2000; MASSONNET and SIGMUNDSON, 2000; HANSSEN,
2001). The limitations inherent to the GPS and InSAR techniques
(mainly observations at discrete surface points in the case of GPS
and existence of non-coherent areas and the fact that, at present,
the three displacement components cannot be obtained in SAR
interferometry) can be overcome by using them together or other
techniques (e. g. , PUGLISI and COLTELLI, 2001; RODRiGUEZ-VELASCO
et al. , 2002; FERNANDEZ et al. , 2003).
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