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A digital tectonic activity map of the earth
Acknowledgements This map was produced with
support from the Goddard Space Flight Center Director's
Discretionary Fund, Task 97-51. We thank the former Center Director,
Joe Rothenberg, and Jerry Soffen for their support. Data from and
discussions with the GSFC Space Geodesy Branch, specifically Chopo
Ma, Jim Ryan, Tom Clark, and Karen Baver were essential for the VLBI
station velocity map. Lowell Whiteside of the National Geophysical
Data Center was most helpful in acquiring seismic data. Dr. Karoly
Kis provided valuable geologic maps of Hungary. Reviews by Barbara
Christy and two anonymous reviewers of a related paper were
extremely helpful. Commercial software used is named for
identification, and does not imply endorsement by the U.S.
government. References
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Figure Captions
Fig. 1 Digital tectonic activity map of the Earth
(DTAM) Fig.
2 Global tectonic activity map of the Earth (GTA) Fig.
3 Global seismicity, 1963-1998; all magnitudes over 3.5
Fig. 4 Seismic activity (1963-1998) and volcanism,
northern hemisphere; map symbols same as Fig. 2 Fig.
5 Seismic activity (1963-1998) and volcanism, southern hemisphere;
map symbols same as Fig. 2 Fig.
6 Horizontal VLBI station velocities, mm/year, Pacific Plate fixed.
Last figures may not be significant; see Ryan et al. (1992) for
discussion of motion uncertainties.
Table 1 Sources of information for the Digital Tectonic
Activity Map.
Table 1: Relevant datasets for tectonic activity
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