Publication Date:
2005
Description:
The Global Strain Rate Map project II-8, initiated in 1998 by the
International Lithosphere Program (ILP), provides constraints for understanding
continental dynamics and for quantifying seismic hazards in general. To date, the Global
Strain Rate Map (GSRM) model is a numerical velocity gradient tensor field solution
(i.e., spatial variations of horizontal strain rate tensor components and rotation
rates) for the entire Earth surface [Kreemer et al., 2003]. The global model consists of
25 rigid spherical plates and ~25,000 0.6 degree x 0.5 degree deformable grid areas
within the diffuse plate boundary zones which lie between these plates (e.g., western
North America, central Asia, the Alpine-Himalaya belt). This model provides an estimate
of the horizontal strain rates, rotation rates, and velocity fields for the diffuse
plate boundary zones as well as an estimate of the motions of the spherical caps
Keywords:
Strain
;
Crustal deformation (cf. Earthquake precursor: deformation or strain)
;
global
;
Global Positioning System
;
Geodesy
;
IGS
;
GSRM
;
Earthquake hazard
;
Fault zone
;
Geothermics
;
1209
;
Geodesy
;
and
;
Gravity:
;
Tectonic
;
deformation
;
8150
;
Tectonophysics:
;
Plate
;
boundary:
;
general
;
8158
;
Plate
;
motions:
;
present
;
and
;
recent
