Wednesday, September 10, 2008

GPS-determination of along-strike variation in Cascadia margin kinematics: mplications for relative plate motion, subduction zone coupling, and perman

For this
study, daily and seasonal irregularities in the global
reference frame were minimized using a regional stabilization
based on subtracting average common-mode
position variations at six sites (ALBH, CABL, DRAO,
GOBS, PABH, and QUIN, Plate 1). This technique
[Bock et al., 1997; Wdowinski et al., 1997] is particularly
useful in cases where the length of observations i s
short, and hence the relative effect of uncorrected seasonal
noise is potentially large.

Monday, September 08, 2008

One sentence in Williams et al., 2004

For the two global solutions we find that as expected,
the horizontal components are less noisy for white and
flicker noise magnitudes than the vertical components by a
factor of 2–3. The east components, also as expected, are
somewhat noisier than the north components because of no
(SOPAC) or incomplete (JPL) integer-cycle phase ambiguity
resolution in the global solutions.
The white noise amplitudes
are about 2 times larger in the JPL global solutions
compared to the SOPAC global solutions, in all three
components, while the flicker noise amplitudes are only
marginally larger. The white noise amplitude differences are
probably due to processing strategies (what these may be are
beyond the scope of this paper), while the comparable flicker
noise amplitudes may reflect a common physical basis, such
as seasonal atmospheric mass distributions [e.g

Sunday, September 07, 2008

The X-Window of Cygwin took up so much CPU.

When start a bash of X-window in Cygwin, the system CPU is highly utilized. Thus, it's good to start a bash without X-window support.

Monday, September 01, 2008

bad mail system at icd

It's frustrating. Urgly GUI, bad style, unfunctional buttons, ...

It's just rubbish.