Geology Reference
In-Depth Information
(7)
Download the La2010a (or b, c, or d) orbital solution file
La2010a_
alkhqp3L.dat
from:
Edit this file to delete columns 2 and 3 (
“a”
and
“l”
); save as
ORBELN.ASC
.
(Mac users will subsequently have to run the output file through
mac2unix.
)
(8)
Run
prepa
, then run
integall
, choosing
FGAM=1
and
CMAR=1.3
to
match output of nominal La2004); finally, run
climavar
. The output file
CLIVARN.ASC
has four columns for
t, e, eps,
and
CP
, where
t=
time in kiloyears before present (negative),
e=
eccentricity,
eps=
obliquity
(in radians), and
CP=climatic precession
(precession index).
(Note:
FGAM
and
CMAR
can be varied to constrain geodynamical effects
back through time, as was done in
Lourens et al., 2001
).
A.5
Other Key Resources
http://sourceforge.net/projects/cs-cmdtools/files/
(
mac2unix
)
http://cran.r-project.org/bin/macosx/tools/
(
g fortran
)
http://www.lsce.ipsl.fr/logiciels/
(
Analyseries: Mac OS only
)
http://www.atmos.ucla.edu/tcd/ssa/
(
SSA-MTM Toolkit: Linux or Mac OS
)
http://folk.uio.no/ohammer/past/
(
PAST: Paleontological Statistics, Windows only
)
http://paos.colorado.edu/research/wavelets/
(
Wavelet Software: FORTRAN,
IDL, MATLAB
)
(
REDFIT—Windows
)
References
Kodama, K. P., D. J. Anastasio, J. Pares, and L. A. Hinnov (2010), High-resolution rock
magnetic cyclostratigraphy in an Eocene flysch, Spanish Pyrenees,
Geochemistry,
Geophysics, Geosystems,
11
. DOI:10.1029/2010GC003069.
Laskar, J., F. Joutel, and F. Boudin (1993), Orbital, precessional and insolation quan-
tities for the Earth from −20 Myr to +10 Myr,
Astronomy and Astrophysics,
270
,
522-533.
