[cig-commits] commit: Started writing text for introduction.

[Mercurial]

changeset:   46:8aa52e2977e7
tag:         tip
user:        Brad Aagaard <baagaard at usgs.gov>
date:        Tue Aug 16 09:36:51 2011 -0700
files:       faultRup.tex
description:
Started writing text for introduction.


diff -r 1235dee8e4dd -r 8aa52e2977e7 faultRup.tex
--- a/faultRup.tex	Thu Jul 21 11:35:17 2011 -0700
+++ b/faultRup.tex	Tue Aug 16 09:36:51 2011 -0700
@@ -45,19 +45,49 @@
 % ------------------------------------------------------------------
 \section{Introduction}\brad{Rough draft}
 
+Understanding the earthquake cycle, from slow deformation associated
+with interseismic behavior to rapid deformation associated with
+earthquake rupture, spans spatial scales ranging from tiny fractions
+of a meter associated with the size of contact asperities on faults
+and individual grains to thousands of kilometers associated with plate
+boundaries. Similarly, temporal scales range from fractions of a
+second associated with slip at a point during earthquake rupture to
+thousands of years of strain accumulation between earthquakes. The
+complexity of dealing with the many physical processes operating over
+this vast range of scales generally leads most researchers to narrow their
+focus to a narrow space-time window in order to isolate just one or a few
+processes. Limited spatial and temporal coverage of observations also
+drives researchers to narrow the focus of their studies. 
+
+Researchers have recognized for some time, though, that interseismic
+deformatino and fault interactions influence earthquake rupture
+propagation, and the dynamics of rupture propagation, in turn, affect
+postseismic deformation. In most cases one simplifies some portion of
+the process to expedite the modeling results. For example, studies of
+slow deformation associated with interseismic and postseismic behavior
+often approximate coseismic slip with the static offset [CITE SOME
+PAPERS]. Likewise, studies of radid deformation associated with
+earthquake rupture propagation often approximate the loading of the
+crust via simplistic assumptions about the stress field at the
+beginning of a rupture [CITE SOME PAPERS]. Earthquake simulators,
+which attempt to model multiple earthquake cycles, simplify not only
+the fault loading and rupture propagation but also the physical
+properties in order to make the calculations tractable.
+
+Recently, several studies have attempted to broaden the space-time
+window in order to remove simplifying assumptions and more
+accurately capture the complex interactions over the earthquake
+cycle. [ADD EXAMPLES]
+
+
+
+
 model earthquake cycle; slow deformation associated with interseismic
 behavior and coseismic slip; rapid deformation associated with earthquake rupture
 propagation; want general capabilities of modeling elasticity with
 slip on faults, including elastic, viscoelastic, and
 viscoelastoplastic deformation and prescribed slip and/or spontaneous
 rupture controlled by fault constitutive model. 
-
-Researchers recognized for quite some time that interseismic
-deformation and fault interactions influence earthquake rupture
-propagation and the dynamics of rupture propagation in turn affect
-postseismic deformation. In most cases one simplifies some portion of
-the process to expedite the results. Seismicity simulators;
-postseismic deformation; spontaneous rupture.
 
 [mention PyLith somewhere in here]