Delphi

The Delphi Project is an attempt to develop data storage facilities for marine geological paleoclimate research. It does so by maintaining a database of marine core data incorporating research results. The aim is to centralise these data and provide a Graphical User Interface for the user to query this database.  

Marine sediment core data, in particular oxygen and carbon isotope data, from a variety of different locations is available from this site; to access data from here, follow one of the links beneath this paragraph

Obtain data via these links:

 

 


What kind of data is stored ?

At this moment most of the following contents are present, but this list isn't complete:

  • Oxygen isotopes
  • Carbon isotopes
  • age models
  • SST models
  • species counts

 


News and data highlights 21 February 2008

Following the death of Professor Sir Nicholas Shackleton on 24 January 2006 the Godwin Laboratory has continued to develop and pursue a variety of research topics. Professor Harry Elderfield and Professor Nick McCave have overseen different aspects of this research effort. Dr Luke Skinner and Dr Patrizia Ferretti, Dr Babette Hoogakker and Dr Aradhna Tripati are among the research workers associated with the laboratory.

 

Godwin Laboratory equipment and personnel have been incorporated into the main Department of Earth Sciences building in Downing Street, Cambridge. This has resulted in the change in IP address and the URL of this website. 

Likewise the POP website is now located here.

Data on the Shackleton, Fairbanks, Chiu, Parrenin 2004 timescale from: Absolute calibration of the Greenland time scale: implications for Antarctic time scales and for δ14C (N.J Shackleton, R.G Fairbanks, Tzu-chien Chiu, F. Parrenin, 2004, Quaternary Science Reviews) are available here: 2004 SFCP timescale data. A PDF of the article is available here:  2004 SFCP timescale paper

 


Planktonic and benthic isotope data from MD95-2042, taken off the coast of Portugal, are available here: MD952042 data and timescales. The marine isotope series have been aligned with both GRIP and GISP chronologies, which in turn have been synchronised with the Antarctic records using atmospheric methane trapped in bubbles. This provides a fascinating insight into interhemispheric climate links and their association with the surface and deep ocean records. See Science, vol 291, p 291 for the ice core synchronisation by T. Blunier and E. Brook, and p 58 in the same issue for a discussion by Nick Shackleton of the relevance of this for the marine record.

Another extensive astronomically tuned time series, covering the interval from 0 to 6 million years BP, is available from this site: the composite isotope sequence from V19-30, ODP 677 and ODP 846, with an unprecedented chronological resolution is available from the Core Data section Composite isotope sequence . The oxygen isotope sequence represents a record of the size of the Earth's ice sheet, and is therefore an important guide to past global climate states. It is important to note that oxygen isotope records combine the effects of changing ice sheet size, changing sea water temperature, and changing salinity. Records may also be affected by diagenesis (changes taking place in the rock after sedimentation).

Data are available from this site documenting the Miocene-Oligocene astronomical tuning carried out on data from ODP Leg 154: index of Miocene-Oligocene tables

Please note that the bulk isotope data from Leg 138 are obtainable from this site; the CDROM accompanying the Scientific Results volume was incomplete. Other bulk isotope datasets are obtainable from the Index of bulk sediment isotope measurements

 


ABOUT THE AUTHORS

This data facility was originally set up by Paul Sjoerdsma, with additional material by Simon Crowhurst and Andy Gerrard. It is now run by Simon Crowhurst

 

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Last updated on 18-Nov-09 09:32