Used Models and Tools

La2004 model

(Model providing the basic astronomical and insolation data, see my "Astronomy and Paleoclimate" page)

• Astronomical Solutions for Earth Paleoclimates (Jacques Laskar, Institut de Mécanique Céleste et de Calcul des Ephémérides):  www.imcce.fr/Equipes/ASD/insola/earth/earth.html

Programming tool

(Tool used for the scripts below)

• DISLIN Scientific Plotting Software (Helmut Michels, Max Planck Institute for Solar System Research):  www.dislin.de
  A flexible small-footprint package for the generation of scientific plots (and also suitable for general-purpose data processing). User code can be executed as scripts (with disgcl interpreter, Perl, Java or Python) or, if so desired, may be compiled/integrated into C or Fortran programs.

Miscellaneous tools

• For script editing, any text editor may do; I use  Crimson Editor
• A handy tool for comparing text files:  ExamDiff
• Image viewing, conversion and other basic image file processing can be done with  IrfanView

Output Data for the Rupelian and Ypresian Stages

See  Paleogene timetable for reference.

Notes

• The material below is work-in-process and may be expanded, modified, or partially deleted at any moment.
• Data files (tables, plots, script sources) are wrapped with minimal html code for easy browser access (viewing, saving to local disk, print preview and print). The "pure" files can be retrieved by removing the html wrapper with any text editor.
• Comment headers appearing in output tables are hand-edited (not generated by script).
• Script sources are in disgcl (DISLIN interpreter).
• Questions, suggestions, comments are welcome (see contact info on "author" page).

Insolation plot (preliminary)

• La2004 insolation at 51° N (update 2005-Dec-26)
  Script source | Insolation plot

Insolation tables

• Merged La2004 data for the Rupelian Stage (update 2006-Jan-15)
  Script source | Insolation table

Plots of orbital elements for selected periods

• Script source
  Experimental. Selection of specific plot is edited in script source.
   
• Miocene, partial
  For script validation. Compare with eccentricity/obliquity plots in Fig. 3 from  Holbourn_2005
  -13.7 to -14.2 Ma: Eccentricity | Obliquity | [not in Holbourn:] Precession Index
   
• Chattian, partial
  For La2004 model validation. Compare with eccentricity plot in Fig. 1 from  Varadi_2003
  -23.8 to -24.1 Ma: Eccentricity
   
• "Boom clay" (Rupelian)
  -28.0 to -31.0 Ma: Eccentricity | Obliquity| Precession Index
  -31.0 to -34.0 Ma: Eccentricity | Obliquity| Precession Index
   
• "Egem sand" (Ypresian, partial)
  -50.5 to -51.5 Ma: Eccentricity | Obliquity | Precession Index
   
• "Roubaix clay" (Ypresian, partial)
  -52.0 to -53.5 Ma: Eccentricity | Obliquity | Precession Index
   
• "Knokke clay" (Ypresian, partial)
  -54.5 to -55.5 Ma: Eccentricity | Obliquity | Precession Index

Reference links

• International Commission on Stratigraphy:  www.stratigraphy.org
• Leuven University - Stratigraphy and Paleontology:  www.kuleuven.be/geology/hsg/Strat/
• Ghent University - Research Unit Palaeontology:  www.paleo.ugent.be
• Kiel University - Institut für Geowissenschaften:  www.ifg.uni-kiel.de